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Add basic framework to support the Atmel SAMD Cortex-M+ chip

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This commit is contained in:
Gregory Nutt 2014-02-12 15:07:11 -06:00
parent 05cf59feef
commit 6fea68c36e
25 changed files with 3038 additions and 8 deletions
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19
arch/arm/Kconfig
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@ -121,19 +121,26 @@ config ARCH_CHIP_NUC1XX
NPX LPC43XX architectures (ARM Cortex-M4).
config ARCH_CHIP_SAMA5
bool "Atmel AT91SAMA5"
bool "Atmel SAMA5"
select ARCH_CORTEXA5
select ARCH_HAVE_FPU
select ARCH_HAVE_LOWVECTORS
---help---
Atmel AT91SAMA5 (ARM Cortex-A5)
Atmel SAMA5 (ARM Cortex-A5)
config ARCH_CHIP_SAMD
bool "Atmel SAMD"
select ARCH_CORTEXM0
select ARCH_HAVE_CMNVECTOR
---help---
Atmel SAMD (ARM Cortex-M0+)
config ARCH_CHIP_SAM34
bool "Atmel AT91SAM3/SAM4"
bool "Atmel SAM3/SAM4"
select ARCH_HAVE_MPU
select ARCH_HAVE_RAMFUNCS
---help---
Atmel AT91SAM3 (ARM Cortex-M3) and SAM4 (ARM Cortex-M4) architectures
Atmel SAM3 (ARM Cortex-M3) and SAM4 (ARM Cortex-M4) architectures
config ARCH_CHIP_STM32
bool "STMicro STM32"
@ -222,6 +229,7 @@ config ARCH_CHIP
default "lpc43xx" if ARCH_CHIP_LPC43XX
default "nuc1xx" if ARCH_CHIP_NUC1XX
default "sama5" if ARCH_CHIP_SAMA5
default "samd" if ARCH_CHIP_SAMD
default "sam34" if ARCH_CHIP_SAM34
default "stm32" if ARCH_CHIP_STM32
default "str71x" if ARCH_CHIP_STR71X
@ -380,6 +388,9 @@ endif
if ARCH_CHIP_SAMA5
source arch/arm/src/sama5/Kconfig
endif
if ARCH_CHIP_SAMD
source arch/arm/src/samd/Kconfig
endif
if ARCH_CHIP_SAM34
source arch/arm/src/sam34/Kconfig
endif

319
arch/arm/include/samd/chip.h Normal file
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@ -0,0 +1,319 @@
/************************************************************************************
* arch/arm/include/samd/chip.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_INCLUDE_SAMD_CHIP_H
#define __ARCH_ARM_INCLUDE_SAMD_CHIP_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Get customizations for each supported chip */
/* SAMD20 Family ********************************************************************/
/* FEATURE SAM D20J SAM D20G SAM D20E
* ------------------- ------------------ ------------------ --------
* No. of pins 64 48 32
* Flash 256/128/64/32/16KB 256/128/64/32/16KB 256/128/64/32/16KB
* SRAM 32/16/8/4/2KB 32/16/8/4/2KB 32/16/8/4/2KB
* Max. Freq. 48MHz 48MHz 48MHz
* Event channels 8 8 8
* Timer/counters 8 6 6
* TC output channels 2 2 2
* SERCOMM 6 6 4
* ADC channels 20 14 10
* Comparators 2 2 2
* DAC channels 1 1 1
* RTC Yes Yes Yes
* RTC alarms 1 1 1
* RTC compare 1 32-bit/2 16-bit 1 32-bit/2 16-bit 1 32-bit/2 16-bit
* External interrupts 16 16 16
* PTC X an Y 16x16 12x10 10x6
* Packages QFN/TQFP QFN/TQFP QFN/TQFP
* Oscillators XOSC32, XOSC, OSC32K, OSCULP32K, OSC8M, and DFLL48M
* SW Debug interface Yes Yes Yes
* Watchdog timer Yes Yes Yes
*/
#if defined(CONFIG_ARCH_CHIP_SAMD20E14)
# define SAMD20 1 /* SAMD20 family */
# define SAMD20E 1 /* SAMD20E */
# undef SAMD20G
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (16*1024) /* 16KB */
# define SAMD_SRAM0_SIZE (2*1024) /* 2KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20E15)
# define SAMD20 1 /* SAMD20 family */
# define SAMD20E 1 /* SAMD20E */
# undef SAMD20G
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (32*1024) /* 32KB */
# define SAMD_SRAM0_SIZE (4*1024) /* 4KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20E16)
# define SAMD20 1 /* SAMD20 family */
# define SAMD20E 1 /* SAMD20E */
# undef SAMD20G
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (64*1024) /* 64KB */
# define SAMD_SRAM0_SIZE (8*1024) /* 8KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20E17)
# define SAMD20 1 /* SAMD20 family */
# define SAMD20E 1 /* SAMD20E */
# undef SAMD20G
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (128*1024) /* 128KB */
# define SAMD_SRAM0_SIZE (16*1024) /* 16KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20E18)
# define SAMD20 1 /* SAMD20 family */
# define SAMD20E 1 /* SAMD20E */
# undef SAMD20G
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (256*1024) /* 256KB */
# define SAMD_SRAM0_SIZE (32*1024) /* 32KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20G14)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# define SAMD20G 1 /* SAMD20G */
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (16*1024) /* 16KB */
# define SAMD_SRAM0_SIZE (2*1024) /* 2KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20G15)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# define SAMD20G 1 /* SAMD20G */
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (32*1024) /* 32KB */
# define SAMD_SRAM0_SIZE (4*1024) /* 4KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20G16)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# define SAMD20G 1 /* SAMD20G */
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (64*1024) /* 64KB */
# define SAMD_SRAM0_SIZE (8*1024) /* 8KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20G17)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# define SAMD20G 1 /* SAMD20G */
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (128*1024) /* 128KB */
# define SAMD_SRAM0_SIZE (16*1024) /* 16KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20G18)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# define SAMD20G 1 /* SAMD20G */
# undef SAMD20J
/* Internal memory */
# define SAMD_FLASH_SIZE (256*1024) /* 256KB */
# define SAMD_SRAM0_SIZE (32*1024) /* 32KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20J14)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# undef SAMD20G
# define SAMD20J 1 /* SAMD20J */
/* Internal memory */
# define SAMD_FLASH_SIZE (16*1024) /* 16KB */
# define SAMD_SRAM0_SIZE (2*1024) /* 2KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20J15)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# undef SAMD20G
# define SAMD20J 1 /* SAMD20J */
/* Internal memory */
# define SAMD_FLASH_SIZE (32*1024) /* 32KB */
# define SAMD_SRAM0_SIZE (4*1024) /* 4KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20J16)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# undef SAMD20G
# define SAMD20J 1 /* SAMD20J */
/* Internal memory */
# define SAMD_FLASH_SIZE (64*1024) /* 64KB */
# define SAMD_SRAM0_SIZE (8*1024) /* 8KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20J17)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# undef SAMD20G
# define SAMD20J 1 /* SAMD20J */
/* Internal memory */
# define SAMD_FLASH_SIZE (128*1024) /* 128KB */
# define SAMD_SRAM0_SIZE (16*1024) /* 16KB */
#elif defined(CONFIG_ARCH_CHIP_SAMD20J18)
# define SAMD20 1 /* SAMD20 family */
# undef SAMD20E
# undef SAMD20G
# define SAMD20J 1 /* SAMD20J */
/* Internal memory */
# define SAMD_FLASH_SIZE (256*1024) /* 256KB */
# define SAMD_SRAM0_SIZE (32*1024) /* 32KB */
#endif
/* SAMD20 Peripherals */
#if defined(SAMD20E)
# define SAMD_NEVENTS 8 /* 8 event channels */
# define SAMD_NTC 6 /* 6 Timer/counters */
# define SAMD_NTCOUT 2 /* 2 TC output channels */
# define SAMD_NSERCOMM 4 /* 4 SERCOMM */
# define SAMD_NADC 10 /* 10 ADC channels */
# define SAMD_NCMP 2 /* 2 Comparators */
# define SAMD_NDAC 1 /* 1 DAC channel */
# define SAMD_RTC 1 /* Have RTC */
# define SAMD_NALARMS 1 /* 1 RTC alarm */
# define SAMD_NRTCMP 1 /* RTC compare: 1 32-bit/2 16-bit */
# define SAMD_NEXTINT 16 /* 16 External interrupts */
# define SAMD_NPTCX 10 /* PTC X */
# define SAMD_NPTCY 6 /* PTC Y */
# define SAMD_WDT /* Have watchdog timer */
#elseif defined(SAMD20G)
# define SAMD_NEVENTS 8 /* 8 event channels */
# define SAMD_NTC 6 /* 6 Timer/counters */
# define SAMD_NTCOUT 2 /* 2 TC output channels */
# define SAMD_NSERCOMM 6 /* 6 SERCOMM */
# define SAMD_NADC 15 /* 14 ADC channels */
# define SAMD_NCMP 2 /* 2 Comparators */
# define SAMD_NDAC 1 /* 1 DAC channel */
# define SAMD_RTC 1 /* Have RTC */
# define SAMD_NALARMS 1 /* 1 RTC alarm */
# define SAMD_NRTCMP 1 /* RTC compare: 1 32-bit/2 16-bit */
# define SAMD_NEXTINT 16 /* 16 External interrupts */
# define SAMD_NPTCX 12 /* PTC X */
# define SAMD_NPTCY 10 /* PTC Y */
# define SAMD_WDT /* Have watchdog timer */
#elseif defined(SAMD20J)
# define SAMD_NEVENTS 8 /* 8 event channels */
# define SAMD_NTC 8 /* 8 Timer/counters */
# define SAMD_NTCOUT 2 /* 2 TC output channels */
# define SAMD_NSERCOMM 6 /* 6 SERCOMM */
# define SAMD_NADC 20 /* 20 ADC channels */
# define SAMD_NCMP 2 /* 2 Comparators */
# define SAMD_NDAC 1 /* 1 DAC channel */
# define SAMD_RTC 1 /* Have RTC */
# define SAMD_NALARMS 1 /* 1 RTC alarm */
# define SAMD_NRTCMP 1 /* RTC compare: 1 32-bit/2 16-bit */
# define SAMD_NEXTINT 16 /* 16 External interrupts */
# define SAMD_NPTCX 16 /* PTC X */
# define SAMD_NPTCY 16 /* PTC Y */
# define SAMD_WDT /* Have watchdog timer */
#endif
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_ARM_INCLUDE_SAMD_CHIP_H */

112
arch/arm/include/samd/irq.h Normal file
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@ -0,0 +1,112 @@
/****************************************************************************************
* arch/arm/include/samd/irq.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************************/
/* This file should never be included directed but, rather, only indirectly through
* nuttx/irq.h
*/
#ifndef __ARCH_ARM_INCLUDE_SAMD_IRQ_H
#define __ARCH_ARM_INCLUDE_SAMD_IRQ_H
/****************************************************************************************
* Included Files
****************************************************************************************/
#include <nuttx/config.h>
#include <arch/samd/chip.h>
/****************************************************************************************
* Pre-processor Definitions
****************************************************************************************/
/* IRQ numbers. The IRQ number corresponds vector number and hence map directly to
* bits in the NVIC. This does, however, waste several words of memory in the IRQ
* to handle mapping tables.
*/
/* Processor Exceptions (vectors 0-15) */
#define SAM_IRQ_RESERVED (0) /* Reserved vector (only used with CONFIG_DEBUG) */
/* Vector 0: Reset stack pointer value */
/* Vector 1: Reset (not handler as an IRQ) */
#define SAM_IRQ_NMI (2) /* Vector 2: Non-Maskable Interrupt (NMI) */
#define SAM_IRQ_HARDFAULT (3) /* Vector 3: Hard fault */
/* Vector 4-10: Reserved */
#define SAM_IRQ_SVCALL (11) /* Vector 11: SVC call */
/* Vector 12-13: Reserved */
#define SAM_IRQ_PENDSV (14) /* Vector 14: Pendable system service request */
#define SAM_IRQ_SYSTICK (15) /* Vector 15: System tick */
/* External interrupts (vectors >= 16). These definitions are chip-specific */
#define SAM_IRQ_INTERRUPT (16) /* Vector number of the first external interrupt */
/* Chip-Specific External interrupts */
#if defined(SAMD20)
# include <arch/samd/samd20_irq.h>
#else
# error "Unrecognized/unsupported SAMD chip"
#endif
/****************************************************************************************
* Public Types
****************************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************************
* Public Data
****************************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************************
* Public Function Prototypes
****************************************************************************************/
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __ARCH_ARM_INCLUDE_SAMD_IRQ_H */

141
arch/arm/include/samd/samd20_irq.h Executable file
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@ -0,0 +1,141 @@
/****************************************************************************************
* arch/arm/include/samd/samd20_irq.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************************/
/* This file should never be included directed but, rather, only indirectly through
* nuttx/irq.h
*/
#ifndef __ARCH_ARM_INCLUDE_SAMD_SAMD20_IRQ_H
#define __ARCH_ARM_INCLUDE_SAMD_SAMD20_IRQ_H
/****************************************************************************************
* Included Files
****************************************************************************************/
/****************************************************************************************
* Definitions
****************************************************************************************/
/* External interrupts */
#define SAM_IRQ_PM (SAM_IRQ_INTERRUPT+0) /* Power Manager */
#define SAM_IRQ_SYSCTRL (SAM_IRQ_INTERRUPT+1) /* System Controller */
#define SAM_IRQ_WDT (SAM_IRQ_INTERRUPT+2) /* Watchdog Timer */
#define SAM_IRQ_RTC (SAM_IRQ_INTERRUPT+3) /* Real Time Counter */
#define SAM_IRQ_EIC (SAM_IRQ_INTERRUPT+4) /* External Interrupt Controller */
#define SAM_IRQ_NVMCTRL (SAM_IRQ_INTERRUPT+5) /* Non-Volatile Memory Controller */
#define SAM_IRQ_EVSYS (SAM_IRQ_INTERRUPT+6) /* Event System */
#define SAM_IRQ_SERCOM0 (SAM_IRQ_INTERRUPT+7) /* Serial Communication Interface 0 */
#define SAM_IRQ_SERCOM1 (SAM_IRQ_INTERRUPT+8) /* Serial Communication Interface 1 */
#define SAM_IRQ_SERCOM2 (SAM_IRQ_INTERRUPT+9) /* Serial Communication Interface 2 */
#define SAM_IRQ_SERCOM3 (SAM_IRQ_INTERRUPT+10) /* Serial Communication Interface 3 */
#define SAM_IRQ_SERCOM4 (SAM_IRQ_INTERRUPT+11) /* Serial Communication Interface 4 */
#define SAM_IRQ_SERCOM5 (SAM_IRQ_INTERRUPT+12) /* Serial Communication Interface 5 */
#define SAM_IRQ_TC0 (SAM_IRQ_INTERRUPT+13) /* Timer/Counter 0 */
#define SAM_IRQ_TC1 (SAM_IRQ_INTERRUPT+14) /* Timer/Counter 1 */
#define SAM_IRQ_TC2 (SAM_IRQ_INTERRUPT+15) /* Timer/Counter 2 */
#define SAM_IRQ_TC3 (SAM_IRQ_INTERRUPT+16) /* Timer/Counter 3 */
#define SAM_IRQ_TC4 (SAM_IRQ_INTERRUPT+17) /* Timer/Counter 4 */
#define SAM_IRQ_TC5 (SAM_IRQ_INTERRUPT+18) /* Timer/Counter 5 */
#define SAM_IRQ_TC6 (SAM_IRQ_INTERRUPT+19) /* Timer/Counter 6 */
#define SAM_IRQ_TC7 (SAM_IRQ_INTERRUPT+20) /* Timer/Counter 7 */
#define SAM_IRQ_ADC (SAM_IRQ_INTERRUPT+21) /* Analog-to-Digital Converter */
#define SAM_IRQ_AC (SAM_IRQ_INTERRUPT+22) /* Analog Comparator */
#define SAM_IRQ_DAC (SAM_IRQ_INTERRUPT+23) /* Digital-to-Analog Converter */
#define SAM_IRQ_PTC (SAM_IRQ_INTERRUPT+24) /* Peripheral Touch Controller*/
#define SAM_IRQ_NINTS (25) /* Total number of interrupts */
#define SAM_IRQ_NIRQS (SAM_IRQ_INTERRUPT+25) /* The number of real interrupts */
/* GPIO interrupts. Up to 16 pins may be configured to support interrupts */
#ifdef CONFIG_GPIO_IRQ
# define SAM_IRQ_EXTINT0 (SAM_IRQ_NIRQS+0) /* External interrupt 0 */
# define SAM_IRQ_EXTINT1 (SAM_IRQ_NIRQS+1) /* External interrupt 1 */
# define SAM_IRQ_EXTINT2 (SAM_IRQ_NIRQS+2) /* External interrupt 2 */
# define SAM_IRQ_EXTINT3 (SAM_IRQ_NIRQS+3) /* External interrupt 3 */
# define SAM_IRQ_EXTINT4 (SAM_IRQ_NIRQS+4) /* External interrupt 4 */
# define SAM_IRQ_EXTINT5 (SAM_IRQ_NIRQS+5) /* External interrupt 5 */
# define SAM_IRQ_EXTINT6 (SAM_IRQ_NIRQS+6) /* External interrupt 6 */
# define SAM_IRQ_EXTINT7 (SAM_IRQ_NIRQS+7) /* External interrupt 7 */
# define SAM_IRQ_EXTINT8 (SAM_IRQ_NIRQS+8) /* External interrupt 8 */
# define SAM_IRQ_EXTINT9 (SAM_IRQ_NIRQS+9) /* External interrupt 9 */
# define SAM_IRQ_EXTINT10 (SAM_IRQ_NIRQS+10) /* External interrupt 10 */
# define SAM_IRQ_EXTINT11 (SAM_IRQ_NIRQS+11) /* External interrupt 11 */
# define SAM_IRQ_EXTINT12 (SAM_IRQ_NIRQS+12) /* External interrupt 12 */
# define SAM_IRQ_EXTINT13 (SAM_IRQ_NIRQS+13) /* External interrupt 13 */
# define SAM_IRQ_EXTINT14 (SAM_IRQ_NIRQS+14) /* External interrupt 14 */
# define SAM_IRQ_EXTINT15 (SAM_IRQ_NIRQS+15) /* External interrupt 15 */
# define SAM_IRQ_NEXTINTS 16
#else
# define SAM_IRQ_NEXTINTS 0
#endif
/* Total number of IRQ numbers */
#define NR_VECTORS SAM_IRQ_NIRQS
#define NR_IRQS (SAM_IRQ_INTERRUPT + SAM_IRQ_NINTS + SAM_IRQ_NEXTINTS)
/****************************************************************************************
* Public Types
****************************************************************************************/
/****************************************************************************************
* Inline functions
****************************************************************************************/
/****************************************************************************************
* Public Variables
****************************************************************************************/
/****************************************************************************************
* Public Function Prototypes
****************************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __ARCH_ARM_INCLUDE_SAMD_SAMD20_IRQ_H */

2
arch/arm/src/kl/kl_timerisr.c
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@ -79,7 +79,7 @@
* = 119,999
* = 0x1d4bf
*
* Which fits within the maximum 14-bit reload value.
* Which fits within the maximum 24-bit reload value.
*/
#define SYSTICK_RELOAD ((SYSTICK_CLOCK / CLK_TCK) - 1)

2
arch/arm/src/nuc1xx/nuc_idle.c
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@ -1,5 +1,5 @@
/****************************************************************************
* arch/arm/src/stm32/nuc_idle.c
* arch/arm/src/nuc1xx/nuc_idle.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>

2
arch/arm/src/nuc1xx/nuc_irq.c
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@ -1,5 +1,5 @@
/****************************************************************************
* arch/arm/src/stm32/nuc_irq.c
* arch/arm/src/nuc1xx/nuc_irq.c
*
* Copyright (C) 2009-2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>

2
arch/arm/src/nuc1xx/nuc_timerisr.c
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@ -86,7 +86,7 @@
* = 119,999
* = 0x1d4bf
*
* Which fits within the maximum 14-bit reload value.
* Which fits within the maximum 24-bit reload value.
*/
#define SYSTICK_RELOAD ((SYSTICK_CLOCK / CLK_TCK) - 1)

350
arch/arm/src/samd/Kconfig Normal file
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@ -0,0 +1,350 @@
#
# For a description of the syntax of this configuration file,
# see misc/tools/kconfig-language.txt.
#
comment "Atmel SAMD Configuration Options"
choice
prompt "Atmel SAMD Chip Selection"
default ARCH_CHIP_SAMD20J18
depends on ARCH_CHIP_SAMD
config ARCH_CHIP_SAMD20E14
bool "SAMD20E14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20E
---help---
Flash 16KB SRAM 2KB
config ARCH_CHIP_SAMD20E15
bool "SAMD20E14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20E
---help---
Flash 32KB SRAM 4KB
config ARCH_CHIP_SAMD20E16
bool "SAMD20E14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20E
---help---
Flash 64KB SRAM 8KB
config ARCH_CHIP_SAMD20E17
bool "SAMD20E14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20E
---help---
Flash 128KB SRAM 16KB
config ARCH_CHIP_SAMD20E18
bool "SAMD20E14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20E
---help---
Flash 256KB SRAM 32KB
config ARCH_CHIP_SAMD20G14
bool "SAMD20G14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20G
---help---
Flash 16KB SRAM 2KB
config ARCH_CHIP_SAMD20G15
bool "SAMD20G14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20G
---help---
Flash 32KB SRAM 4KB
config ARCH_CHIP_SAMD20G16
bool "SAMD20G14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20G
---help---
Flash 64KB SRAM 8KB
config ARCH_CHIP_SAMD20G17
bool "SAMD20G14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20G
---help---
Flash 128KB SRAM 16KB
config ARCH_CHIP_SAMD20G18
bool "SAMD20G14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20G
---help---
Flash 256KB SRAM 32KB
config ARCH_CHIP_SAMD20J14
bool "SAMD20J14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20J
---help---
Flash 16KB SRAM 2KB
config ARCH_CHIP_SAMD20J15
bool "SAMD20J14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20J
---help---
Flash 32KB SRAM 4KB
config ARCH_CHIP_SAMD20J16
bool "SAMD20J14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20J
---help---
Flash 64KB SRAM 8KB
config ARCH_CHIP_SAMD20J17
bool "SAMD20J14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20J
---help---
Flash 128KB SRAM 16KB
config ARCH_CHIP_SAMD20J18
bool "SAMD20J14"
select ARCH_FAMILY_SAMD20
select ARCH_FAMILY_SAMD20J
---help---
Flash 256KB SRAM 32KB
endchoice
config ARCH_FAMILY_SAMD20
bool
default n
config ARCH_FAMILY_SAMD20E
bool
default n
config ARCH_FAMILY_SAMD20G
bool
default n
select SAMD_HAVE_SERCOM4
select SAMD_HAVE_SERCOM5
config ARCH_FAMILY_SAMD20J
bool
default n
select SAMD_HAVE_SERCOM4
select SAMD_HAVE_SERCOM5
select SAMD_HAVE_TC6
select SAMD_HAVE_TC7
menu "SAMD Peripheral Support"
config SAMD_WDT
bool "Watchdog Timer"
default n
config SAMD_RTC
bool "Real Time Counter"
default n
config SAMD_NVMCTRL
bool "Non-Volatile Memory Controller"
default n
config SAMD_EVSYS
bool "Event System"
default n
config SAMD_SERCOM0
bool "Serial Communication Interface 0"
default n
config SAMD_SERCOM1
bool "Serial Communication Interface 1"
default n
config SAMD_SERCOM2
bool "Serial Communication Interface 2"
default n
config SAMD_SERCOM3
bool "Serial Communication Interface 3"
default n
config SAMD_SERCOM4
bool "Serial Communication Interface 4"
default n
depends on SAMD_HAVE_SERCOM4
config SAMD_SERCOM5
bool "Serial Communication Interface 5"
default n
depends on SAMD_HAVE_SERCOM5
config SAMD_TC0
bool "Timer/Counter 0"
default n
config SAMD_TC1
bool "Timer/Counter 1"
default n
config SAMD_TC2
bool "Timer/Counter 2"
default n
config SAMD_TC3
bool "Timer/Counter 3"
default n
config SAMD_TC4
bool "Timer/Counter 4"
default n
config SAMD_TC5
bool "Timer/Counter 5"
default n
config SAMD_TC6
bool "Timer/Counter 6"
default n
depends on SAMD_HAVE_TC6
config SAMD_TC7
bool "Timer/Counter 7"
default n
depends on SAMD_HAVE_TC7
config SAMD_ADC
bool "Analog-to-Digital Converter"
default n
config SAMD_AC
bool "Analog Comparator"
default n
config SAMD_DAC
bool "Digital-to-Analog Converter"
default n
config SAMD_PTC
bool "Peripheral Touch Controller"
default n
endmenu
choice
prompt "SERCOM0 mode"
default SAM_SERCOM0_UART
depends on SAMD_SERCOM0
config SAM_SERCOM0_I2C
bool "I2C"
select I2C
config SAM_SERCOM0_SPI
bool "SPI"
select SPI
config SAM_SERCOM0_UART
bool "UART"
select ARCH_HAVE_UART0
endchoice
choice
prompt "SERCOM1 mode"
default SAM_SERCOM1_UART
depends on SAMD_SERCOM1
config SAM_SERCOM1_I2C
bool "I2C"
select I2C
config SAM_SERCOM1_SPI
bool "SPI"
select SPI
config SAM_SERCOM1_UART
bool "UART"
select ARCH_HAVE_UART1
endchoice
choice
prompt "SERCOM2 mode"
default SAM_SERCOM2_UART
depends on SAMD_SERCOM2
config SAM_SERCOM2_I2C
bool "I2C"
select I2C
config SAM_SERCOM2_SPI
bool "SPI"
select SPI
config SAM_SERCOM2_UART
bool "UART"
select ARCH_HAVE_UART2
endchoice
choice
prompt "SERCOM3 mode"
default SAM_SERCOM3_UART
depends on SAMD_SERCOM3
config SAM_SERCOM3_I2C
bool "I2C"
select I2C
config SAM_SERCOM3_SPI
bool "SPI"
select SPI
config SAM_SERCOM3_UART
bool "UART"
select ARCH_HAVE_UART3
endchoice
choice
prompt "SERCOM4 mode"
default SAM_SERCOM4_UART
depends on SAMD_SERCOM4
config SAM_SERCOM4_I2C
bool "I2C"
select I2C
config SAM_SERCOM4_SPI
bool "SPI"
select SPI
config SAM_SERCOM4_UART
bool "UART"
select ARCH_HAVE_UART4
endchoice
choice
prompt "SERCOM5 mode"
default SAM_SERCOM5_UART
depends on SAMD_SERCOM5
config SAM_SERCOM5_I2C
bool "I2C"
select I2C
config SAM_SERCOM5_SPI
bool "SPI"
select SPI
config SAM_SERCOM5_UART
bool "UART"
select ARCH_HAVE_UART5
endchoice

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############################################################################
# arch/arm/src/samd/Make.defs
#
# Copyright (C) 2014 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
HEAD_ASRC =
CMN_ASRCS = up_exception.S up_saveusercontext.S up_fullcontextrestore.S
CMN_ASRCS += up_switchcontext.S vfork.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copyfullstate.c
CMN_CSRCS += up_createstack.c up_mdelay.c up_udelay.c up_exit.c
CMN_CSRCS += up_initialize.c up_initialstate.c up_interruptcontext.c
CMN_CSRCS += up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c
CMN_CSRCS += up_releasepending.c up_releasestack.c up_reprioritizertr.c
CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c up_systemreset.c
CMN_CSRCS += up_unblocktask.c up_usestack.c up_doirq.c up_hardfault.c
CMN_CSRCS += up_svcall.c up_vectors.c up_vfork.c
ifeq ($(CONFIG_NUTTX_KERNEL),y)
CMN_CSRCS += up_task_start.c up_pthread_start.c up_stackframe.c
ifneq ($(CONFIG_DISABLE_SIGNALS),y)
CMN_CSRCS += up_signal_dispatch.c
CMN_UASRCS += up_signal_handler.S
endif
endif
ifeq ($(CONFIG_DEBUG_STACK),y)
CMN_CSRCS += up_checkstack.c
endif
ifeq ($(CONFIG_ELF),y)
CMN_CSRCS += up_elf.c
endif
ifeq ($(CONFIG_DEBUG),y)
CMN_CSRCS += up_dumpnvic.c
endif
CHIP_ASRCS =
CHIP_CSRCS = sam_idle.c sam_irq.c sam_start.c sam_timerisr.c
ifeq ($(CONFIG_NUTTX_KERNEL),y)
CHIP_CSRCS += sam_userspace.c
endif

75
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/************************************************************************************
* arch/arm/src/samd/chip.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_CHIP_H
#define __ARCH_ARM_SRC_SAMD_CHIP_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/* Include the chip capabilities file */
#include <arch/samd/chip.h>
/* Define the number of interrupt vectors that need to be supported for this chip */
#define ARMV6M_PERIPHERAL_INTERRUPTS 25
/* Include the memory map file. Other chip hardware files should then include
* this file for the proper setup.
*/
#include "chip/sam_memorymap.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_ARM_SRC_SAMD_CHIP_H */

52
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/************************************************************************************
* arch/arm/src/samd/chip/sam_memorymap.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_CHIP_SAM_MEMORYMAP_H
#define __ARCH_ARM_SRC_SAMD_CHIP_SAM_MEMORYMAP_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <arch/samd/chip.h>
#if defined(SAMD20)
# include "chip/samd20_memorymap.h"
#else
# error Unrecognized SAMD architecture
#endif
#endif /* __ARCH_ARM_SRC_SAMD_CHIP_SAM_MEMORYMAP_H */

120
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/********************************************************************************************
* arch/arm/src/samd/chip/samd20_memorymap.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
********************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_CHIP_SAMD20_MEMORYMAP_H
#define __ARCH_ARM_SRC_SAMD_CHIP_SAMD20_MEMORYMAP_H
/********************************************************************************************
* Included Files
********************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
/********************************************************************************************
* Pre-processor Definitions
********************************************************************************************/
/* System Memory Map */
#define SAM_FLASH_BASE 0x00000000 /* Embedded FLASH memory space (<= 256KB) */
#define SAM_CALIB_BASE 0x00800000 /* Calibration and auxiliary space */
#define SAM_SRAM_BASE 0x20000000 /* Embedded SRAM memory space (<= 64KB) */
#define SAM_AHBA_BASE 0x40000000 /* AHB-APB Bridge A (64KB) */
#define SAM_AHBB_BASE 0x41000000 /* AHB-APB Bridge B (64KB) */
#define SAM_AHBC_BASE 0x42000000 /* AHB-APB Bridge C (64KB) */
/* Calibration and Auxiliary Space */
#define SAM_AUX0_BASE 0x00804000 /* AUX0 offset address */
#define SAM_AUX1_BASE 0x00806000 /* AUX1 offset address */
# define SAM_AUX1_AREA1 0x00806000 /* Area 1 offset address (reserved, 64 bits) */
# define SAM_AUX1_AREA2 0x00806008 /* Area 2 Device configuration area (64 bits) */
# define SAM_AUX1_AREA3 0x00806010 /* Area 3 offset address (reserved, 128 bits) */
# define SAM_AUX1_AREA4 0x00806020 /* Area 4 Software calibration area (256 bits) */
/* AHB-APB Bridge A */
#define SAM_PAC0_BASE 0x40000000 /* Peripheral Access Controller 0 */
#define SAM_PM_BASE 0x40000400 /* Power Manager */
#define SAM_SYSCTRL_BASE 0x40000800 /* System Controller */
#define SAM_GCLK_BASE 0x40000C00 /* Generic Clock Controller */
#define SAM_WDT_BASE 0x40001000 /* Watchdog Timer */
#define SAM_RTC_BASE 0x40001400 /* Real-Time Counter */
#define SAM_EIC_BASE 0x40001800 /* External Interrupt Controller */
/* AHB-APB Bridge B */
#define SAM_PAC1_BASE 0x41000000 /* Peripheral Access Controller 1 */
#define SAM_DSU_BASE 0x41002000 /* Device Service Unit */
#define SAM_NVMCTRL_BASE 0x41004000 /* Non-Volatile Memory Controller */
#define SAM_PORT_BASE 0x41004400 /* Ports */
/* AHB-APB Bridge C */
#define SAM_PAC2_BASE 0x42000000 /* Peripheral Access Controller 2 */
#define SAM_EVSYS_BASE 0x42000400 /* Event System */
#define SAM_SERCOM0_BASE 0x42000800 /* Serial Communication Interface 0 */
#define SAM_SERCOM1_BASE 0x42000c00 /* Serial Communication Interface 1 */
#define SAM_SERCOM2_BASE 0x42001000 /* Serial Communication Interface 2 */
#define SAM_SERCOM3_BASE 0x42001400 /* Serial Communication Interface 3 */
#define SAM_SERCOM4_BASE 0x42001800 /* Serial Communication Interface 4 */
#define SAM_SERCOM5_BASE 0x42001c00 /* Serial Communication Interface 5 */
#define SAM_TC0_BASE 0x42002000 /* Timer/Counter 0 */
#define SAM_TC1_BASE 0x42002400 /* Timer/Counter 1 */
#define SAM_TC2_BASE 0x42002800 /* Timer/Counter 2 */
#define SAM_TC3_BASE 0x42002c00 /* Timer/Counter 3 */
#define SAM_TC4_BASE 0x42003000 /* Timer/Counter 4 */
#define SAM_TC5_BASE 0x42003400 /* Timer/Counter 5 */
#define SAM_TC6_BASE 0x42003800 /* Timer/Counter 6 */
#define SAM_TC7_BASE 0x42003c00 /* Timer/Counter 7 */
#define SAM_ADC_BASE 0x42004000 /* Analog-to-Digital Converter */
#define SAM_AC_BASE 0x42004400 /* Analog Comparator*/
#define SAM_DAC_BASE 0x42004800 /* Digital-to-Analog Converter */
#define SAM_PTC_BASE 0x42004C00 /* Peripheral Touch Controller */
/********************************************************************************************
* Public Types
********************************************************************************************/
/********************************************************************************************
* Public Data
********************************************************************************************/
/********************************************************************************************
* Public Functions
********************************************************************************************/
#endif /* __ARCH_ARM_SRC_SAMD_CHIP_SAMD20_MEMORYMAP_H */

93
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/************************************************************************************
* arch/arm/src/samd/sam_clockconfig.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_SAM_CLOCKCONFIG_H
#define __ARCH_ARM_SRC_SAMD_SAM_CLOCKCONFIG_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: sam_clockconfig
*
* Description:
* Called to establish the clock settings based on the values in board.h.
*
* Input Parameters:
* None
*
* Returned Value:
* None
*
************************************************************************************/
void sam_clockconfig(void);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_SAMD_SAM_CLOCKCONFIG_H */

189
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/************************************************************************************
* arch/arm/src/samd/sam_config.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_SAM_CONFIG_H
#define __ARCH_ARM_SRC_SAMD_SAM_CONFIG_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <arch/samd/chip.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* How many SERCOM peripherals are configured as peripherals */
#define SAMD_HAVE_UART0 1
#define SAMD_HAVE_UART1 1
#define SAMD_HAVE_UART2 1
#define SAMD_HAVE_UART3 1
#define SAMD_HAVE_UART4 1
#define SAMD_HAVE_UART5 1
#if !defined(CONFIG_SAMD_SERCOM0) || !defined(CONFIG_SAMD_SERCOM0_UART)
# undef SAMD_HAVE_UART0
# undef CONFIG_SAMD_SERCOM0_UART
# undef CONFIG_UART0_SERIAL_CONSOLE
# undef CONFIG_UART0_FLOW_CONTROL
# undef CONFIG_UART0_IRDAMODE
# undef CONFIG_UART0_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM1) || !defined(CONFIG_SAMD_SERCOM1_UART)
# undef SAMD_HAVE_UART1
# undef CONFIG_SAMD_SERCOM1_UART
# undef CONFIG_UART1_SERIAL_CONSOLE
# undef CONFIG_UART1_FLOW_CONTROL
# undef CONFIG_UART1_IRDAMODE
# undef CONFIG_UART1_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM2) || !defined(CONFIG_SAMD_SERCOM2_UART)
# undef SAMD_HAVE_UART2
# undef CONFIG_SAMD_SERCOM2_UART
# undef CONFIG_UART2_SERIAL_CONSOLE
# undef CONFIG_UART2_FLOW_CONTROL
# undef CONFIG_UART2_IRDAMODE
# undef CONFIG_UART2_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM3) || !defined(CONFIG_SAMD_SERCOM3_UART)
# undef SAMD_HAVE_UART3
# undef CONFIG_SAMD_SERCOM3_UART
# undef CONFIG_UART3_SERIAL_CONSOLE
# undef CONFIG_UART3_FLOW_CONTROL
# undef CONFIG_UART3_IRDAMODE
# undef CONFIG_UART3_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM4) || !defined(CONFIG_SAMD_SERCOM4_UART)
# undef SAMD_HAVE_UART4
# undef CONFIG_SAMD_SERCOM4_UART
# undef CONFIG_UART4_SERIAL_CONSOLE
# undef CONFIG_UART4_FLOW_CONTROL
# undef CONFIG_UART4_IRDAMODE
# undef CONFIG_UART4_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM5) || !defined(CONFIG_SAMD_SERCOM5_UART)
# undef SAMD_HAVE_UART5
# undef CONFIG_SAMD_SERCOM5_UART
# undef CONFIG_UART5_SERIAL_CONSOLE
# undef CONFIG_UART5_FLOW_CONTROL
# undef CONFIG_UART5_IRDAMODE
# undef CONFIG_UART5_RS485MODE
#endif
/* Are any UARTs enabled? */
#undef HAVE_UART
#if defined(SAMD_HAVE_UART0) || defined(SAMD_HAVE_UART1) || \
defined(SAMD_HAVE_UART2) || defined(SAMD_HAVE_UART3) || \
defined(SAMD_HAVE_UART4) || defined(SAMD_HAVE_UART5)
# define HAVE_UART 1
#endif
/* Is there a serial console? There should be at most one defined. It could be on
* any UARTn, n=0,1,2 - OR - there might not be any serial console at all.
*/
#if defined(CONFIG_UART0_SERIAL_CONSOLE)
# undef CONFIG_UART1_SERIAL_CONSOLE
# undef CONFIG_UART2_SERIAL_CONSOLE
# undef CONFIG_UART3_SERIAL_CONSOLE
# undef CONFIG_UART4_SERIAL_CONSOLE
# undef CONFIG_UART5_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
# undef CONFIG_UART0_SERIAL_CONSOLE
# undef CONFIG_UART2_SERIAL_CONSOLE
# undef CONFIG_UART3_SERIAL_CONSOLE
# undef CONFIG_UART4_SERIAL_CONSOLE
# undef CONFIG_UART5_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_UART2_SERIAL_CONSOLE)
# undef CONFIG_UART0_SERIAL_CONSOLE
# undef CONFIG_UART1_SERIAL_CONSOLE
# undef CONFIG_UART3_SERIAL_CONSOLE
# undef CONFIG_UART4_SERIAL_CONSOLE
# undef CONFIG_UART5_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_UART3_SERIAL_CONSOLE)
# undef CONFIG_UART0_SERIAL_CONSOLE
# undef CONFIG_UART1_SERIAL_CONSOLE
# undef CONFIG_UART2_SERIAL_CONSOLE
# undef CONFIG_UART4_SERIAL_CONSOLE
# undef CONFIG_UART5_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_UART4_SERIAL_CONSOLE)
# undef CONFIG_UART0_SERIAL_CONSOLE
# undef CONFIG_UART1_SERIAL_CONSOLE
# undef CONFIG_UART2_SERIAL_CONSOLE
# undef CONFIG_UART3_SERIAL_CONSOLE
# undef CONFIG_UART5_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_UART5_SERIAL_CONSOLE)
# undef CONFIG_UART0_SERIAL_CONSOLE
# undef CONFIG_UART1_SERIAL_CONSOLE
# undef CONFIG_UART2_SERIAL_CONSOLE
# undef CONFIG_UART3_SERIAL_CONSOLE
# undef CONFIG_UART4_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#else
# undef CONFIG_UART0_SERIAL_CONSOLE
# undef CONFIG_UART1_SERIAL_CONSOLE
# undef CONFIG_UART2_SERIAL_CONSOLE
# undef CONFIG_UART3_SERIAL_CONSOLE
# undef CONFIG_UART4_SERIAL_CONSOLE
# undef CONFIG_UART5_SERIAL_CONSOLE
# undef HAVE_SERIAL_CONSOLE
#endif
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_ARM_SRC_SAMD_SAM_CONFIG_H */

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/****************************************************************************
* arch/arm/src/samd/sam_gpio.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_SAM_GPIO_H
#define __ARCH_ARM_SRC_SAMD_SAM_GPIO_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
# include <stdbool.h>
#endif
#include <nuttx/irq.h>
#include "chip.h"
#include "chip/sam_gpio.h"
/****************************************************************************
* Pre-processor Declarations
****************************************************************************/
/* Bit-encoded input to sam_configgpio() */
#warning Missing logic
/****************************************************************************
* Public Types
****************************************************************************/
typedef uint16_t gpio_cfgset_t;
#warning REVISIT
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: sam_configgpio
*
* Description:
* Configure a GPIO pin based on bit-encoded description of the pin.
* Once it is configured as Alternative (GPIO_ALT|GPIO_CNF_AFPP|...)
* function, it must be unconfigured with sam_unconfiggpio() with
* the same cfgset first before it can be set to non-alternative function.
*
* Returns:
* OK on success
* ERROR on invalid port, or when pin is locked as ALT function.
*
****************************************************************************/
int sam_configgpio(gpio_cfgset_t cfgset);
/****************************************************************************
* Name: sam_gpiowrite
*
* Description:
* Write one or zero to the selected GPIO pin
*
****************************************************************************/
void sam_gpiowrite(gpio_cfgset_t pinset, bool value);
/****************************************************************************
* Name: sam_gpioread
*
* Description:
* Read one or zero from the selected GPIO pin
*
****************************************************************************/
bool sam_gpioread(gpio_cfgset_t pinset);
/****************************************************************************
* Function: sam_dumpgpio
*
* Description:
* Dump all GPIO registers associated with the provided pin description
* along with a descriptive message.
*
****************************************************************************/
#ifdef CONFIG_DEBUG
void sam_dumpgpio(gpio_cfgset_t pinset, const char *msg);
#else
# define sam_dumpgpio(p,m)
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_SAMD_SAM_GPIO_H */

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/****************************************************************************
* arch/arm/src/samd/sam_idle.c
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <arch/board/board.h>
#include <nuttx/config.h>
#include <nuttx/arch.h>
#include <nuttx/power/pm.h>
#include <arch/irq.h>
#include "chip.h"
#include "up_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Does the board support an IDLE LED to indicate that the board is in the
* IDLE state?
*/
#if defined(CONFIG_ARCH_LEDS) && defined(LED_IDLE)
# define BEGIN_IDLE() board_led_on(LED_IDLE)
# define END_IDLE() board_led_off(LED_IDLE)
#else
# define BEGIN_IDLE()
# define END_IDLE()
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: up_idlepm
*
* Description:
* Perform IDLE state power management.
*
****************************************************************************/
#ifdef CONFIG_PM
static void up_idlepm(void)
{
static enum pm_state_e oldstate = PM_NORMAL;
enum pm_state_e newstate;
irqstate_t flags;
int ret;
/* Decide, which power saving level can be obtained */
newstate = pm_checkstate();
/* Check for state changes */
if (newstate != oldstate)
{
flags = irqsave();
/* Perform board-specific, state-dependent logic here */
llvdbg("newstate= %d oldstate=%d\n", newstate, oldstate);
/* Then force the global state change */
ret = pm_changestate(newstate);
if (ret < 0)
{
/* The new state change failed, revert to the preceding state */
(void)pm_changestate(oldstate);
}
else
{
/* Save the new state */
oldstate = newstate;
}
/* MCU-specific power management logic */
switch (newstate)
{
case PM_NORMAL:
break;
case PM_IDLE:
break;
case PM_STANDBY:
sam_pmstop(true);
break;
case PM_SLEEP:
(void)sam_pmstandby();
break;
default:
break;
}
irqrestore(flags);
}
}
#else
# define up_idlepm()
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_idle
*
* Description:
* up_idle() is the logic that will be executed when their is no other
* ready-to-run task. This is processor idle time and will continue until
* some interrupt occurs to cause a context switch from the idle task.
*
* Processing in this state may be processor-specific. e.g., this is where
* power management operations might be performed.
*
****************************************************************************/
void up_idle(void)
{
#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
/* If the system is idle and there are no timer interrupts, then process
* "fake" timer interrupts. Hopefully, something will wake up.
*/
sched_process_timer();
#else
/* Perform IDLE mode power management */
up_idlepm();
/* Sleep until an interrupt occurs to save power. */
BEGIN_IDLE();
asm("WFI");
END_IDLE();
#endif
}

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/****************************************************************************
* arch/arm/src/samd/sam_irq.c
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include <arch/irq.h>
#include "nvic.h"
#include "up_arch.h"
#include "os_internal.h"
#include "up_internal.h"
#include "sam_irq.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* Get a 32-bit version of the default priority */
#define DEFPRIORITY32 \
(NVIC_SYSH_PRIORITY_DEFAULT << 24 | NVIC_SYSH_PRIORITY_DEFAULT << 16 |\
NVIC_SYSH_PRIORITY_DEFAULT << 8 | NVIC_SYSH_PRIORITY_DEFAULT)
/****************************************************************************
* Public Data
****************************************************************************/
volatile uint32_t *current_regs;
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: sam_dumpnvic
*
* Description:
* Dump some interesting NVIC registers
*
****************************************************************************/
#if defined(CONFIG_DEBUG_IRQ)
static void sam_dumpnvic(const char *msg, int irq)
{
irqstate_t flags;
flags = irqsave();
lldbg("NVIC (%s, irq=%d):\n", msg, irq);
lldbg(" ISER: %08x ICER: %08x\n",
getreg32(ARMV6M_NVIC_ISER), getreg32(ARMV6M_NVIC_ICER));
lldbg(" ISPR: %08x ICPR: %08x\n",
getreg32(ARMV6M_NVIC_ISPR), getreg32(ARMV6M_NVIC_ICPR));
lldbg(" IRQ PRIO: %08x %08x %08x %08x\n",
getreg32(ARMV6M_NVIC_IPR0), getreg32(ARMV6M_NVIC_IPR1),
getreg32(ARMV6M_NVIC_IPR2), getreg32(ARMV6M_NVIC_IPR3));
lldbg(" %08x %08x %08x %08x\n",
getreg32(ARMV6M_NVIC_IPR4), getreg32(ARMV6M_NVIC_IPR5),
getreg32(ARMV6M_NVIC_IPR6), getreg32(ARMV6M_NVIC_IPR7));
lldbg("SYSCON:\n");
lldbg(" CPUID: %08x\n",
getreg32(ARMV6M_SYSCON_CPUID));
lldbg(" ICSR: %08x AIRCR: %08x\n",
getreg32(ARMV6M_SYSCON_ICSR), getreg32(ARMV6M_SYSCON_AIRCR));
lldbg(" SCR: %08x CCR: %08x\n",
getreg32(ARMV6M_SYSCON_SCR), getreg32(ARMV6M_SYSCON_CCR));
lldbg(" SHPR2: %08x SHPR3: %08x\n",
getreg32(ARMV6M_SYSCON_SHPR2), getreg32(ARMV6M_SYSCON_SHPR3));
irqrestore(flags);
}
#else
# define sam_dumpnvic(msg, irq)
#endif
/****************************************************************************
* Name: sam_nmi, sam_busfault, sam_usagefault, sam_pendsv,
* sam_dbgmonitor, sam_pendsv, sam_reserved
*
* Description:
* Handlers for various execptions. None are handled and all are fatal
* error conditions. The only advantage these provided over the default
* unexpected interrupt handler is that they provide a diagnostic output.
*
****************************************************************************/
#ifdef CONFIG_DEBUG
static int sam_nmi(int irq, FAR void *context)
{
(void)irqsave();
dbg("PANIC!!! NMI received\n");
PANIC();
return 0;
}
static int sam_pendsv(int irq, FAR void *context)
{
(void)irqsave();
dbg("PANIC!!! PendSV received\n");
PANIC();
return 0;
}
static int sam_reserved(int irq, FAR void *context)
{
(void)irqsave();
dbg("PANIC!!! Reserved interrupt\n");
PANIC();
return 0;
}
#endif
/****************************************************************************
* Name: sam_clrpend
*
* Description:
* Clear a pending interrupt at the NVIC.
*
****************************************************************************/
static inline void sam_clrpend(int irq)
{
/* This will be called on each interrupt exit whether the interrupt can be
* enambled or not. So this assertion is necessarily lame.
*/
DEBUGASSERT((unsigned)irq < NR_IRQS);
/* Check for an external interrupt */
if (irq >= SAM_IRQ_INTERRUPT && irq < SAM_IRQ_INTERRUPT + SAM_IRQ_NINTS)
{
/* Set the appropriate bit in the ISER register to enable the
* interrupt
*/
putreg32((1 << (irq - SAM_IRQ_INTERRUPT)), ARMV6M_NVIC_ICPR);
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_irqinitialize
****************************************************************************/
void up_irqinitialize(void)
{
uint32_t regaddr;
int i;
/* Disable all interrupts */
putreg32(0xffffffff, ARMV6M_NVIC_ICER);
/* Set all interrupts (and exceptions) to the default priority */
putreg32(DEFPRIORITY32, ARMV6M_SYSCON_SHPR2);
putreg32(DEFPRIORITY32, ARMV6M_SYSCON_SHPR3);
/* Now set all of the interrupt lines to the default priority */
for (i = 0; i < 8; i++)
{
regaddr = ARMV6M_NVIC_IPR(i);
putreg32(DEFPRIORITY32, regaddr);
}
/* currents_regs is non-NULL only while processing an interrupt */
current_regs = NULL;
/* Attach the SVCall and Hard Fault exception handlers. The SVCall
* exception is used for performing context switches; The Hard Fault
* must also be caught because a SVCall may show up as a Hard Fault
* under certain conditions.
*/
irq_attach(SAM_IRQ_SVCALL, up_svcall);
irq_attach(SAM_IRQ_HARDFAULT, up_hardfault);
/* Attach all other processor exceptions (except reset and sys tick) */
#ifdef CONFIG_DEBUG
irq_attach(SAM_IRQ_NMI, sam_nmi);
irq_attach(SAM_IRQ_PENDSV, sam_pendsv);
irq_attach(SAM_IRQ_RESERVED, sam_reserved);
#endif
sam_dumpnvic("initial", NR_IRQS);
#ifndef CONFIG_SUPPRESS_INTERRUPTS
/* And finally, enable interrupts */
irqenable();
#endif
}
/****************************************************************************
* Name: up_disable_irq
*
* Description:
* Disable the IRQ specified by 'irq'
*
****************************************************************************/
void up_disable_irq(int irq)
{
DEBUGASSERT((unsigned)irq < NR_IRQS);
/* Check for an external interrupt */
if (irq >= SAM_IRQ_INTERRUPT && irq < SAM_IRQ_INTERRUPT + SAM_IRQ_NINTS)
{
/* Set the appropriate bit in the ICER register to disable the
* interrupt
*/
putreg32((1 << (irq - SAM_IRQ_INTERRUPT)), ARMV6M_NVIC_ICER);
}
/* Handle processor exceptions. Only SysTick can be disabled */
else if (irq == SAM_IRQ_SYSTICK)
{
modifyreg32(ARMV6M_SYSTICK_CSR, SYSTICK_CSR_ENABLE, 0);
}
sam_dumpnvic("disable", irq);
}
/****************************************************************************
* Name: up_enable_irq
*
* Description:
* Enable the IRQ specified by 'irq'
*
****************************************************************************/
void up_enable_irq(int irq)
{
/* This will be called on each interrupt exit whether the interrupt can be
* enambled or not. So this assertion is necessarily lame.
*/
DEBUGASSERT((unsigned)irq < NR_IRQS);
/* Check for external interrupt */
if (irq >= SAM_IRQ_INTERRUPT && irq < SAM_IRQ_INTERRUPT + SAM_IRQ_NINTS)
{
/* Set the appropriate bit in the ISER register to enable the
* interrupt
*/
putreg32((1 << (irq - SAM_IRQ_INTERRUPT)), ARMV6M_NVIC_ISER);
}
/* Handle processor exceptions. Only SysTick can be disabled */
else if (irq == SAM_IRQ_SYSTICK)
{
modifyreg32(ARMV6M_SYSTICK_CSR, 0, SYSTICK_CSR_ENABLE);
}
sam_dumpnvic("enable", irq);
}
/****************************************************************************
* Name: up_ack_irq
*
* Description:
* Acknowledge the IRQ
*
****************************************************************************/
void up_ack_irq(int irq)
{
sam_clrpend(irq);
}
/****************************************************************************
* Name: up_prioritize_irq
*
* Description:
* Set the priority of an IRQ.
*
* Since this API is not supported on all architectures, it should be
* avoided in common implementations where possible.
*
****************************************************************************/
#ifdef CONFIG_ARCH_IRQPRIO
int up_prioritize_irq(int irq, int priority)
{
uint32_t regaddr;
uint32_t regval;
int shift;
DEBUGASSERT(irq == SAM_IRQ_SVCALL ||
irq == SAM_IRQ_PENDSV ||
irq == SAM_IRQ_SYSTICK ||
(irq >= SAM_IRQ_INTERRUPT && irq < NR_IRQS));
DEBUGASSERT(priority >= NVIC_SYSH_DISABLE_PRIORITY &&
priority <= NVIC_SYSH_PRIORITY_MIN);
/* Check for external interrupt */
if (irq >= SAM_IRQ_INTERRUPT && irq < SAM_IRQ_INTERRUPT + SAM_IRQ_NINTS)
{
/* ARMV6M_NVIC_IPR() maps register IPR0-IPR7 with four settings per
* register.
*/
regaddr = ARMV6M_NVIC_IPR(irq >> 2);
shift = (irq & 3) << 3;
}
/* Handle processor exceptions. Only SVCall, PendSV, and SysTick can be
* reprioritized. And we will not permit modification of SVCall through
* this function.
*/
else if (irq == SAM_IRQ_PENDSV)
{
regaddr = ARMV6M_SYSCON_SHPR2;
shift = SYSCON_SHPR3_PRI_14_SHIFT;
}
else if (irq == SAM_IRQ_SYSTICK)
{
regaddr = ARMV6M_SYSCON_SHPR2;
shift = SYSCON_SHPR3_PRI_15_SHIFT;
}
else
{
return ERROR;
}
/* Set the priority */
regval = getreg32(regaddr);
regval &= ~((uint32_t)0xff << shift);
regval |= ((uint32_t)priority << shift);
putreg32(regval, regaddr);
sam_dumpnvic("prioritize", irq);
return OK;
}
#endif

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/************************************************************************************
* arch/arm/src/samd/sam_irq.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_SAM_IRQ_H
#define __ARCH_ARM_SRC_SAMD_SAM_IRQ_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Inline Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_ARM_SRC_SAMD_SAM_IRQ_H */

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/************************************************************************************
* arch/arm/src/samd/sam_lowputc.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_SAM_LOWPUTC_H
#define __ARCH_ARM_SRC_SAMD_SAM_LOWPUTC_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include "sam_config.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: sam_lowsetup
*
* Description:
* Called at the very beginning of _start. Performs low level initialization.
*
************************************************************************************/
void sam_lowsetup(void);
/****************************************************************************
* Name: sam_setbaud
*
* Description:
* Set the BAUD divisor for the selected UART.
*
*****************************************************************************/
#ifdef HAVE_UART
void sam_setbaud(uintptr_t base, uint32_t baud);
#endif
/****************************************************************************
* Name: sam_lowputc
*
* Description:
* Output one character to the UART using a simple polling method.
*
*****************************************************************************/
#ifdef HAVE_SERIAL_CONSOLE
void sam_lowputc(uint32_t ch);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_SAMD_SAM_LOWPUTC_H */

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/************************************************************************************
* arch/arm/src/samd/sam_serial.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_SAM_SERIAL_H
#define __ARCH_ARM_SRC_SAMD_SAM_SERIAL_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include "sam_config.h"
#include "chip/sam_sercom.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Inline Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_ARM_SRC_SAMD_SAM_SERIAL_H */

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/****************************************************************************
* arch/arm/src/samd/sam_start.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/init.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
#include "sam_config.h"
#include "sam_lowputc.h"
#include "sam_clockconfig.h"
#include "sam_userspace.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Memory Map:
*
* 0x0000:0000 - Beginning of FLASH. Address of exception vectors.
* 0x0003:ffff - End of flash (assuming 256KB of FLASH)
* 0x2000:0000 - Start of SRAM and start of .data (_sdata)
* - End of .data (_edata) abd start of .bss (_sbss)
* - End of .bss (_ebss) and bottom of idle stack
* - _ebss + CONFIG_IDLETHREAD_STACKSIZE = end of idle stack,
* start of heap
* 0x2000:ffff - End of SRAM and end of heap (assuming 64KB of SRAM)
*/
#define IDLE_STACK ((uint32_t)&_ebss+CONFIG_IDLETHREAD_STACKSIZE-4)
#define HEAP_BASE ((uint32_t)&_ebss+CONFIG_IDLETHREAD_STACKSIZE)
/****************************************************************************
* Public Data
****************************************************************************/
const uint32_t g_idle_topstack = IDLE_STACK;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: showprogress
*
* Description:
* Print a character on the UART to show boot status.
*
****************************************************************************/
#if defined(CONFIG_DEBUG) && defined(HAVE_SERIAL_CONSOLE)
# define showprogress(c) sam_lowputc((uint32_t)c)
#else
# define showprogress(c)
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: _start
*
* Description:
* This is the reset entry point.
*
****************************************************************************/
void __start(void)
{
const uint32_t *src;
uint32_t *dest;
/* Configure the uart so that we can get debug output as soon as possible */
sam_clockconfig();
sam_lowsetup();
showprogress('A');
/* Clear .bss. We'll do this inline (vs. calling memset) just to be
* certain that there are no issues with the state of global variables.
*/
for (dest = &_sbss; dest < &_ebss; )
{
*dest++ = 0;
}
showprogress('B');
/* Move the initialized data section from his temporary holding spot in
* FLASH into the correct place in SRAM. The correct place in SRAM is
* give by _sdata and _edata. The temporary location is in FLASH at the
* end of all of the other read-only data (.text, .rodata) at _eronly.
*/
for (src = &_eronly, dest = &_sdata; dest < &_edata; )
{
*dest++ = *src++;
}
showprogress('C');
/* Perform early serial initialization */
#ifdef USE_EARLYSERIALINIT
up_earlyserialinit();
#endif
showprogress('D');
/* For the case of the separate user-/kernel-space build, perform whatever
* platform specific initialization of the user memory is required.
* Normally this just means initializing the user space .data and .bss
* segments.
*/
#ifdef CONFIG_NUTTX_KERNEL
sam_userspace();
showprogress('E');
#endif
/* Initialize onboard resources */
sam_boardinitialize();
showprogress('F');
/* Then start NuttX */
showprogress('\r');
showprogress('\n');
os_start();
/* Shoulnd't get here */
for(;;);
}

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/****************************************************************************
* arch/arm/src/samd/sam_timerisr.c
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <time.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include "nvic.h"
#include "clock_internal.h"
#include "up_internal.h"
#include "up_arch.h"
#include "chip.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* The desired timer interrupt frequency is provided by the definition
* CLK_TCK (see include/time.h). CLK_TCK defines the desired number of
* system clock ticks per second. That value is a user configurable setting
* that defaults to 100 (100 ticks per second = 10 MS interval).
*
* Then, for example, if the CPU clock is the the SysTick and BOARD_CPU_FREQUENCY is 48MHz and CLK_TCK is 100, then the reload value would be:
*
* SYSTICK_RELOAD = (48,000,000 / 100) - 1
* = 479,999
* = 0x752ff
*
* Which fits within the maximum 24-bit reload value.
*/
#define SYSTICK_RELOAD ((BOARD_CPU_FREQUENCY / CLK_TCK) - 1)
/* The size of the reload field is 24 bits. Verify that the reload value
* will fit in the reload register.
*/
#if SYSTICK_RELOAD > 0x00ffffff
# error SYSTICK_RELOAD exceeds the range of the RELOAD register
#endif
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Function: up_timerisr
*
* Description:
* The timer ISR will perform a variety of services for various portions
* of the systems.
*
****************************************************************************/
int up_timerisr(int irq, uint32_t *regs)
{
/* Process timer interrupt */
sched_process_timer();
return 0;
}
/****************************************************************************
* Function: up_timerinit
*
* Description:
* This function is called during start-up to initialize
* the timer interrupt.
*
****************************************************************************/
void up_timerinit(void)
{
uint32_t regval;
/* Set the SysTick interrupt to the default priority */
regval = getreg32(ARMV6M_SYSCON_SHPR3);
regval &= ~SYSCON_SHPR3_PRI_15_MASK;
regval |= (NVIC_SYSH_PRIORITY_DEFAULT << SYSCON_SHPR3_PRI_15_SHIFT);
putreg32(regval, ARMV6M_SYSCON_SHPR3);
/* Configure SysTick to interrupt at the requested rate */
putreg32(SYSTICK_RELOAD, ARMV6M_SYSTICK_RVR);
/* Attach the timer interrupt vector */
(void)irq_attach(SAM_IRQ_SYSTICK, (xcpt_t)up_timerisr);
/* Enable SysTick interrupts */
putreg32((SYSTICK_CSR_TICKINT | SYSTICK_CSR_ENABLE), ARMV6M_SYSTICK_CSR);
/* And enable the timer interrupt */
up_enable_irq(SAM_IRQ_SYSTICK);
}

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/****************************************************************************
* arch/arm/src/samd/sam_userspace.c
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <assert.h>
#include <nuttx/userspace.h>
#include "sam_userspace.h"
#ifdef CONFIG_NUTTX_KERNEL
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: sam_userspace
*
* Description:
* For the case of the separate user-/kernel-space build, perform whatever
* platform specific initialization of the user memory is required.
* Normally this just means initializing the user space .data and .bss
* segments.
*
****************************************************************************/
void sam_userspace(void)
{
uint8_t *src;
uint8_t *dest;
uint8_t *end;
/* Clear all of user-space .bss */
DEBUGASSERT(USERSPACE->us_bssstart != 0 && USERSPACE->us_bssend != 0 &&
USERSPACE->us_bssstart <= USERSPACE->us_bssend);
dest = (uint8_t*)USERSPACE->us_bssstart;
end = (uint8_t*)USERSPACE->us_bssend;
while (dest != end)
{
*dest++ = 0;
}
/* Initialize all of user-space .data */
DEBUGASSERT(USERSPACE->us_datasource != 0 &&
USERSPACE->us_datastart != 0 && USERSPACE->us_dataend != 0 &&
USERSPACE->us_datastart <= USERSPACE->us_dataend);
src = (uint8_t*)USERSPACE->us_datasource;
dest = (uint8_t*)USERSPACE->us_datastart;
end = (uint8_t*)USERSPACE->us_dataend;
while (dest != end)
{
*dest++ = *src++;
}
}
#endif /* CONFIG_NUTTX_KERNEL */

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/************************************************************************************
* arch/arm/src/samd/sam_userspace.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMD_SAM_USERSPACE_H
#define __ARCH_ARM_SRC_SAMD_SAM_USERSPACE_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/****************************************************************************
* Name: sam_userspace
*
* Description:
* For the case of the separate user-/kernel-space build, perform whatever
* platform specific initialization of the user memory is required.
* Normally this just means initializing the user space .data and .bss
* segments.
*
****************************************************************************/
#ifdef CONFIG_NUTTX_KERNEL
void sam_userspace(void);
#endif
#endif /* __ARCH_ARM_SRC_SAMD_SAM_USERSPACE_H */