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SAMD20: Beginning of SERCOM UART configuration logic

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This commit is contained in:
Gregory Nutt 2014-02-15 14:22:56 -06:00
parent dfb75147df
commit 2ec06dc52f
9 changed files with 620 additions and 137 deletions
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12
arch/arm/include/samd/chip.h
View File

@ -58,7 +58,7 @@
* Event channels 8 8 8
* Timer/counters 8 6 6
* TC output channels 2 2 2
* SERCOMM 6 6 4
* SERCOM 6 6 4
* ADC channels 20 14 10
* Comparators 2 2 2
* DAC channels 1 1 1
@ -261,7 +261,7 @@
# 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_NSERCOM 4 /* 4 SERCOM */
# define SAMD_NADC 10 /* 10 ADC channels */
# define SAMD_NCMP 2 /* 2 Comparators */
# define SAMD_NDAC 1 /* 1 DAC channel */
@ -272,11 +272,11 @@
# define SAMD_NPTCX 10 /* PTC X */
# define SAMD_NPTCY 6 /* PTC Y */
# define SAMD_WDT /* Have watchdog timer */
#elseif defined(SAMD20G)
#elif 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_NSERCOM 6 /* 6 SERCOM */
# define SAMD_NADC 15 /* 14 ADC channels */
# define SAMD_NCMP 2 /* 2 Comparators */
# define SAMD_NDAC 1 /* 1 DAC channel */
@ -287,11 +287,11 @@
# define SAMD_NPTCX 12 /* PTC X */
# define SAMD_NPTCY 10 /* PTC Y */
# define SAMD_WDT /* Have watchdog timer */
#elseif defined(SAMD20J)
#elif 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_NSERCOM 6 /* 6 SERCOM */
# define SAMD_NADC 20 /* 20 ADC channels */
# define SAMD_NCMP 2 /* 2 Comparators */
# define SAMD_NDAC 1 /* 1 DAC channel */

48
arch/arm/src/samd/Kconfig
View File

@ -253,7 +253,7 @@ endmenu
choice
prompt "SERCOM0 mode"
default SAMD_SERCOM0_ISUART
default SAMD_SERCOM0_ISUSART
depends on SAMD_SERCOM0
config SAMD_SERCOM0_ISI2C
@ -264,15 +264,15 @@ config SAMD_SERCOM0_ISSPI
bool "SPI"
select SPI
config SAMD_SERCOM0_ISUART
bool "UART"
select ARCH_HAVE_UART0
config SAMD_SERCOM0_ISUSART
bool "USART"
select ARCH_HAVE_USART0
endchoice
choice
prompt "SERCOM1 mode"
default SAMD_SERCOM1_ISUART
default SAMD_SERCOM1_ISUSART
depends on SAMD_SERCOM1
config SAMD_SERCOM1_ISI2C
@ -283,15 +283,15 @@ config SAMD_SERCOM1_ISSPI
bool "SPI"
select SPI
config SAMD_SERCOM1_ISUART
bool "UART"
select ARCH_HAVE_UART1
config SAMD_SERCOM1_ISUSART
bool "USART"
select ARCH_HAVE_USART1
endchoice
choice
prompt "SERCOM2 mode"
default SAMD_SERCOM2_ISUART
default SAMD_SERCOM2_ISUSART
depends on SAMD_SERCOM2
config SAMD_SERCOM2_ISI2C
@ -302,15 +302,15 @@ config SAMD_SERCOM2_ISSPI
bool "SPI"
select SPI
config SAMD_SERCOM2_ISUART
bool "UART"
select ARCH_HAVE_UART2
config SAMD_SERCOM2_ISUSART
bool "USART"
select ARCH_HAVE_USART2
endchoice
choice
prompt "SERCOM3 mode"
default SAMD_SERCOM3_ISUART
default SAMD_SERCOM3_ISUSART
depends on SAMD_SERCOM3
config SAMD_SERCOM3_ISI2C
@ -321,15 +321,15 @@ config SAMD_SERCOM3_ISSPI
bool "SPI"
select SPI
config SAMD_SERCOM3_ISUART
bool "UART"
select ARCH_HAVE_UART3
config SAMD_SERCOM3_ISUSART
bool "USART"
select ARCH_HAVE_USART3
endchoice
choice
prompt "SERCOM4 mode"
default SAMD_SERCOM4_ISUART
default SAMD_SERCOM4_ISUSART
depends on SAMD_SERCOM4
config SAMD_SERCOM4_ISI2C
@ -340,15 +340,15 @@ config SAMD_SERCOM4_ISSPI
bool "SPI"
select SPI
config SAMD_SERCOM4_ISUART
bool "UART"
select ARCH_HAVE_UART4
config SAMD_SERCOM4_ISUSART
bool "USART"
select ARCH_HAVE_USART4
endchoice
choice
prompt "SERCOM5 mode"
default SAMD_SERCOM5_ISUART
default SAMD_SERCOM5_ISUSART
depends on SAMD_SERCOM5
config SAMD_SERCOM5_ISI2C
@ -359,8 +359,8 @@ config SAMD_SERCOM5_ISSPI
bool "SPI"
select SPI
config SAMD_SERCOM5_ISUART
bool "UART"
select ARCH_HAVE_UART5
config SAMD_SERCOM5_ISUSART
bool "USART"
select ARCH_HAVE_USART5
endchoice

4
arch/arm/src/samd/Make.defs
View File

@ -68,8 +68,8 @@ CMN_CSRCS += up_dumpnvic.c
endif
CHIP_ASRCS =
CHIP_CSRCS = sam_clockconfig.c sam_idle.c sam_irq.c sam_port.c sam_start.c
CHIP_CSRCS += sam_timerisr.c
CHIP_CSRCS = sam_clockconfig.c sam_idle.c sam_irq.c sam_lowputc.c
CHIP_CSRCS += sam_port.c sam_start.c sam_timerisr.c sam_usart.c
ifeq ($(CONFIG_NUTTX_KERNEL),y)
CHIP_CSRCS += sam_userspace.c

4
arch/arm/src/samd/chip/sam_usart.h
View File

@ -153,8 +153,8 @@
# define USART_CTRLA_ASYNCH (0)
# define USART_CTRLA_SYNCH USART_CTRLA_CMODE
#define USART_CTRLA_CPOL (1 << 29) /* Bit 29: Clock polarity */
# define USART_CTRLA_RISING (0) /* Rising XCK edge Falling XCK edge */
# define USART_CTRLA_FALLING USART_CTRLA_CPOL /* Falling XCK edge Rising XCK edge */
# define USART_CTRLA_CPOL_NORMAL (0) /* Rising XCK edge Falling XCK edge */
# define USART_CTRLA_CPOL_INVERTED USART_CTRLA_CPOL /* Falling XCK edge Rising XCK edge */
#define USART_CTRLA_DORD (1 << 30) /* Bit 30: Data order */
# define USART_CTRLA_MSBFIRST (0)
# define USART_CTRLA_LSBFIRST USART_CTRLA_DORD

202
arch/arm/src/samd/sam_config.h
View File

@ -46,131 +46,137 @@
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* How many SERCOM peripherals are configured as UART peripherals? */
/* How many SERCOM peripherals are configured as USART 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
#define SAMD_HAVE_USART0 1
#define SAMD_HAVE_USART1 1
#define SAMD_HAVE_USART2 1
#define SAMD_HAVE_USART3 1
#define SAMD_HAVE_USART4 1
#define SAMD_HAVE_USART5 1
#if !defined(CONFIG_SAMD_SERCOM0) || !defined(CONFIG_SAMD_SERCOM0_ISUART)
# undef SAMD_HAVE_UART0
# undef CONFIG_SAMD_SERCOM0_ISUART
# undef CONFIG_UART0_SERIAL_CONSOLE
# undef CONFIG_UART0_FLOW_CONTROL
# undef CONFIG_UART0_IRDAMODE
# undef CONFIG_UART0_RS485MODE
#if !defined(CONFIG_SAMD_SERCOM0) || !defined(CONFIG_SAMD_SERCOM0_ISUSART) || \
!defined(CONFIG_USART0_ISUART)
# undef SAMD_HAVE_USART0
# undef CONFIG_SAMD_SERCOM0_ISUSART
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART0_FLOW_CONTROL
# undef CONFIG_USART0_IRDAMODE
# undef CONFIG_USART0_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM1) || !defined(CONFIG_SAMD_SERCOM1_ISUART)
# undef SAMD_HAVE_UART1
# undef CONFIG_SAMD_SERCOM1_ISUART
# undef CONFIG_UART1_SERIAL_CONSOLE
# undef CONFIG_UART1_FLOW_CONTROL
# undef CONFIG_UART1_IRDAMODE
# undef CONFIG_UART1_RS485MODE
#if !defined(CONFIG_SAMD_SERCOM1) || !defined(CONFIG_SAMD_SERCOM1_ISUSART) || \
!defined(CONFIG_USART1_ISUART)
# undef SAMD_HAVE_USART1
# undef CONFIG_SAMD_SERCOM1_ISUSART
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef CONFIG_USART1_FLOW_CONTROL
# undef CONFIG_USART1_IRDAMODE
# undef CONFIG_USART1_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM2) || !defined(CONFIG_SAMD_SERCOM2_ISUART)
# undef SAMD_HAVE_UART2
# undef CONFIG_SAMD_SERCOM2_ISUART
# undef CONFIG_UART2_SERIAL_CONSOLE
# undef CONFIG_UART2_FLOW_CONTROL
# undef CONFIG_UART2_IRDAMODE
# undef CONFIG_UART2_RS485MODE
#if !defined(CONFIG_SAMD_SERCOM2) || !defined(CONFIG_SAMD_SERCOM2_ISUSART) || \
!defined(CONFIG_USART2_ISUART)
# undef SAMD_HAVE_USART2
# undef CONFIG_SAMD_SERCOM2_ISUSART
# undef CONFIG_USART2_SERIAL_CONSOLE
# undef CONFIG_USART2_FLOW_CONTROL
# undef CONFIG_USART2_IRDAMODE
# undef CONFIG_USART2_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM3) || !defined(CONFIG_SAMD_SERCOM3_ISUART)
# undef SAMD_HAVE_UART3
# undef CONFIG_SAMD_SERCOM3_ISUART
# undef CONFIG_UART3_SERIAL_CONSOLE
# undef CONFIG_UART3_FLOW_CONTROL
# undef CONFIG_UART3_IRDAMODE
# undef CONFIG_UART3_RS485MODE
#if !defined(CONFIG_SAMD_SERCOM3) || !defined(CONFIG_SAMD_SERCOM3_ISUSART) || \
!defined(CONFIG_USART3_ISUART)
# undef SAMD_HAVE_USART3
# undef CONFIG_SAMD_SERCOM3_ISUSART
# undef CONFIG_USART3_SERIAL_CONSOLE
# undef CONFIG_USART3_FLOW_CONTROL
# undef CONFIG_USART3_IRDAMODE
# undef CONFIG_USART3_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM4) || !defined(CONFIG_SAMD_SERCOM4_ISUART)
# undef SAMD_HAVE_UART4
# undef CONFIG_SAMD_SERCOM4_ISUART
# undef CONFIG_UART4_SERIAL_CONSOLE
# undef CONFIG_UART4_FLOW_CONTROL
# undef CONFIG_UART4_IRDAMODE
# undef CONFIG_UART4_RS485MODE
#if !defined(CONFIG_SAMD_SERCOM4) || !defined(CONFIG_SAMD_SERCOM4_ISUSART) || \
!defined(CONFIG_USART4_ISUART)
# undef SAMD_HAVE_USART4
# undef CONFIG_SAMD_SERCOM4_ISUSART
# undef CONFIG_USART4_SERIAL_CONSOLE
# undef CONFIG_USART4_FLOW_CONTROL
# undef CONFIG_USART4_IRDAMODE
# undef CONFIG_USART4_RS485MODE
#endif
#if !defined(CONFIG_SAMD_SERCOM5) || !defined(CONFIG_SAMD_SERCOM5_ISUART)
# undef SAMD_HAVE_UART5
# undef CONFIG_SAMD_SERCOM5_ISUART
# undef CONFIG_UART5_SERIAL_CONSOLE
# undef CONFIG_UART5_FLOW_CONTROL
# undef CONFIG_UART5_IRDAMODE
# undef CONFIG_UART5_RS485MODE
#if !defined(CONFIG_SAMD_SERCOM5) || !defined(CONFIG_SAMD_SERCOM5_ISUSART) || \
!defined(CONFIG_USART5_ISUART)
# undef SAMD_HAVE_USART5
# undef CONFIG_SAMD_SERCOM5_ISUSART
# undef CONFIG_USART5_SERIAL_CONSOLE
# undef CONFIG_USART5_FLOW_CONTROL
# undef CONFIG_USART5_IRDAMODE
# undef CONFIG_USART5_RS485MODE
#endif
/* Are any UARTs enabled? */
/* Are any USARTs 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
#undef HAVE_USART
#if defined(SAMD_HAVE_USART0) || defined(SAMD_HAVE_USART1) || \
defined(SAMD_HAVE_USART2) || defined(SAMD_HAVE_USART3) || \
defined(SAMD_HAVE_USART4) || defined(SAMD_HAVE_USART5)
# define HAVE_USART 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.
* any USARTn, n=0-5 - 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
#if defined(CONFIG_USART0_SERIAL_CONSOLE)
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef CONFIG_USART2_SERIAL_CONSOLE
# undef CONFIG_USART3_SERIAL_CONSOLE
# undef CONFIG_USART4_SERIAL_CONSOLE
# undef CONFIG_USART5_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
#elif defined(CONFIG_USART1_SERIAL_CONSOLE)
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART2_SERIAL_CONSOLE
# undef CONFIG_USART3_SERIAL_CONSOLE
# undef CONFIG_USART4_SERIAL_CONSOLE
# undef CONFIG_USART5_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
#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef CONFIG_USART3_SERIAL_CONSOLE
# undef CONFIG_USART4_SERIAL_CONSOLE
# undef CONFIG_USART5_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
#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef CONFIG_USART2_SERIAL_CONSOLE
# undef CONFIG_USART4_SERIAL_CONSOLE
# undef CONFIG_USART5_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
#elif defined(CONFIG_USART4_SERIAL_CONSOLE)
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef CONFIG_USART2_SERIAL_CONSOLE
# undef CONFIG_USART3_SERIAL_CONSOLE
# undef CONFIG_USART5_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
#elif defined(CONFIG_USART5_SERIAL_CONSOLE)
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef CONFIG_USART2_SERIAL_CONSOLE
# undef CONFIG_USART3_SERIAL_CONSOLE
# undef CONFIG_USART4_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 CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef CONFIG_USART2_SERIAL_CONSOLE
# undef CONFIG_USART3_SERIAL_CONSOLE
# undef CONFIG_USART4_SERIAL_CONSOLE
# undef CONFIG_USART5_SERIAL_CONSOLE
# undef HAVE_SERIAL_CONSOLE
#endif

105
arch/arm/src/samd/sam_lowputc.c Normal file
View File

@ -0,0 +1,105 @@
/****************************************************************************
* arch/arm/src/samd/sam_lowputc.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 "sam_config.h"
#include "sam_usart.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/************************************************************************************
* Name: sam_lowsetup
*
* Description:
* Called at the very beginning of _start. Performs low level initialization.
*
************************************************************************************/
void sam_lowsetup(void)
{
#warning Missing logic
}
/****************************************************************************
* Name: sam_usartconfig
*
* Description:
* Set the configuration of a SERCOM for provided USART configuration.
*
*****************************************************************************/
#ifdef HAVE_USART
void sam_usartconfig(const struct sam_usart_config_s *config)
{
#warning Missing logic
}
#endif
/****************************************************************************
* Name: sam_lowputc
*
* Description:
* Output one character to the USART using a simple polling method.
*
*****************************************************************************/
#ifdef HAVE_SERIAL_CONSOLE
void sam_lowputc(uint32_t ch)
{
#warning Missing logic
}
#endif

11
arch/arm/src/samd/sam_lowputc.h
View File

@ -81,22 +81,23 @@ extern "C"
void sam_lowsetup(void);
/****************************************************************************
* Name: sam_setbaud
* Name: sam_usartconfig
*
* Description:
* Set the BAUD divisor for the selected UART.
* Set the configuration of a SERCOM for provided USART configuration.
*
*****************************************************************************/
#ifdef HAVE_UART
void sam_setbaud(uintptr_t base, uint32_t baud);
#ifdef HAVE_USART
struct sam_usart_config_s;
void sam_usartconfig(const struct sam_usart_config_s *config);
#endif
/****************************************************************************
* Name: sam_lowputc
*
* Description:
* Output one character to the UART using a simple polling method.
* Output one character to the USART using a simple polling method.
*
*****************************************************************************/

225
arch/arm/src/samd/sam_usart.c Normal file
View File

@ -0,0 +1,225 @@
/****************************************************************************
* arch/arm/src/samd/sam_usart.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 "chip/sam_pinmap.h"
#include "chip/sam_usart.h"
#include <arch/board/board.h>
#include "sam_usart.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef SAMD_HAVE_USART0
const struct sam_usart_config_s g_usart0config =
{
.sercom = 0,
.parity = CONFIG_USART0_PARITY,
.bits = CONFIG_USART0_BITS,
.irq = SAM_IRQ_SERCOM0,
.stopbits2 = CONFIG_USART0_2STOP,
.baud = CONFIG_USART0_BAUD,
.pad0 = BOARD_SERCOM0_PINMAP_PAD0,
.pad1 = BOARD_SERCOM0_PINMAP_PAD1,
.pad2 = BOARD_SERCOM0_PINMAP_PAD2,
.pad3 = BOARD_SERCOM0_PINMAP_PAD3,
.muxconfig = BOARD_SERCOM0_MUXCONFIG,
.base = SAM_SERCOM0_BASE,
};
#endif
#ifdef SAMD_HAVE_USART1
const struct sam_usart_config_s g_usart1config =
{
.sercom = 1,
.parity = CONFIG_USART1_PARITY,
.bits = CONFIG_USART1_BITS,
.irq = SAM_IRQ_SERCOM1,
.stopbits2 = CONFIG_USART1_2STOP,
.baud = CONFIG_USART1_BAUD,
.pad0 = BOARD_SERCOM1_PINMAP_PAD0,
.pad1 = BOARD_SERCOM1_PINMAP_PAD1,
.pad2 = BOARD_SERCOM1_PINMAP_PAD2,
.pad3 = BOARD_SERCOM1_PINMAP_PAD3,
.muxconfig = BOARD_SERCOM1_MUXCONFIG,
.base = SAM_SERCOM1_BASE,
};
#endif
#ifdef SAMD_HAVE_USART2
const struct sam_usart_config_s g_usart2config =
{
.sercom = 2,
.parity = CONFIG_USART2_PARITY,
.bits = CONFIG_USART2_BITS,
.irq = SAM_IRQ_SERCOM2,
.stopbits2 = CONFIG_USART2_2STOP,
.baud = CONFIG_USART2_BAUD,
.pad0 = BOARD_SERCOM2_PINMAP_PAD0,
.pad1 = BOARD_SERCOM2_PINMAP_PAD1,
.pad2 = BOARD_SERCOM2_PINMAP_PAD2,
.pad3 = BOARD_SERCOM2_PINMAP_PAD3,
.muxconfig = BOARD_SERCOM2_MUXCONFIG,
.base = SAM_SERCOM2_BASE,
};
#endif
#ifdef SAMD_HAVE_USART3
const struct sam_usart_config_s g_usart3config =
{
.sercom = 3,
.parity = CONFIG_USART3_PARITY,
.bits = CONFIG_USART3_BITS,
.irq = SAM_IRQ_SERCOM3,
.stopbits2 = CONFIG_USART3_2STOP,
.baud = CONFIG_USART3_BAUD,
.pad0 = BOARD_SERCOM3_PINMAP_PAD0,
.pad1 = BOARD_SERCOM3_PINMAP_PAD1,
.pad2 = BOARD_SERCOM3_PINMAP_PAD2,
.pad3 = BOARD_SERCOM3_PINMAP_PAD3,
.muxconfig = BOARD_SERCOM3_MUXCONFIG,
.base = SAM_SERCOM3_BASE,
};
#endif
#ifdef SAMD_HAVE_USART4
const struct sam_usart_config_s g_usart4config =
{
.sercom = 4,
.parity = CONFIG_USART4_PARITY,
.bits = CONFIG_USART4_BITS,
.irq = SAM_IRQ_SERCOM4,
.stopbits2 = CONFIG_USART4_2STOP,
.baud = CONFIG_USART4_BAUD,
.pad0 = BOARD_SERCOM4_PINMAP_PAD0,
.pad1 = BOARD_SERCOM4_PINMAP_PAD1,
.pad2 = BOARD_SERCOM4_PINMAP_PAD2,
.pad3 = BOARD_SERCOM4_PINMAP_PAD3,
.muxconfig = BOARD_SERCOM4_MUXCONFIG,
.base = SAM_SERCOM4_BASE,
};
#endif
#ifdef SAMD_HAVE_USART5
const struct sam_usart_config_s g_usart5config =
{
.sercom = 5,
.parity = CONFIG_USART5_PARITY,
.bits = CONFIG_USART5_BITS,
.irq = SAM_IRQ_SERCOM5,
.stopbits2 = CONFIG_USART5_2STOP,
.baud = CONFIG_USART5_BAUD,
.pad0 = BOARD_SERCOM5_PINMAP_PAD0,
.pad1 = BOARD_SERCOM5_PINMAP_PAD1,
.pad2 = BOARD_SERCOM5_PINMAP_PAD2,
.pad3 = BOARD_SERCOM5_PINMAP_PAD3,
.muxconfig = BOARD_SERCOM5_MUXCONFIG,
.base = SAM_SERCOM5_BASE,
};
#endif
const struct sam_usart_config_s *g_usartconfig[SAMD_NSERCOM] =
{
#if SAMD_NSERCOM > 5
#ifdef SAMD_HAVE_USART5
&g_usart5config,
#else
(const struct sam_usart_config_s *)0,
#endif
#endif
#if SAMD_NSERCOM > 1
#ifdef SAMD_HAVE_USART1
&g_usart1config,
#else
(const struct sam_usart_config_s *)0,
#endif
#endif
#if SAMD_NSERCOM > 2
#ifdef SAMD_HAVE_USART2
&g_usart2config,
#else
(const struct sam_usart_config_s *)0,
#endif
#endif
#if SAMD_NSERCOM > 3
#ifdef SAMD_HAVE_USART3
&g_usart3config,
#else
(const struct sam_usart_config_s *)0,
#endif
#endif
#if SAMD_NSERCOM > 4
#ifdef SAMD_HAVE_USART4
&g_usart4config,
#else
(const struct sam_usart_config_s *)0,
#endif
#endif
#if SAMD_NSERCOM > 5
#ifdef SAMD_HAVE_USART5
&g_usart5config,
#else
(const struct sam_usart_config_s *)0,
#endif
#endif
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/

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/************************************************************************************
* arch/arm/src/samd/sam_usart.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_USART_H
#define __ARCH_ARM_SRC_SAMD_SAM_USART_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <arch/chip/chip.h>
#include "sam_config.h"
#include "sam_port.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Pick the console USART configuration */
#if defined(CONFIG_USART0_SERIAL_CONSOLE)
# define g_consoleconfig (&g_usart0config)
#elif defined(CONFIG_USART1_SERIAL_CONSOLE)
# define g_consoleconfig (&g_usart1config)
#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
# define g_consoleconfig (&g_usart2config)
#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
# define g_consoleconfig (&g_usart3config)
#elif defined(CONFIG_USART4_SERIAL_CONSOLE)
# define g_consoleconfig (&g_usart4config)
#elif defined(CONFIG_USART5_SERIAL_CONSOLE)
# define g_consoleconfig (&g_usart5config)
#else
# undef g_consoleconfig
#endif
/************************************************************************************
* Public Types
************************************************************************************/
/* This structure describes the static configuration of a USART */
struct sam_usart_config_s
{
uint8_t sercom; /* Identifies the SERCOM peripheral */
uint8_t parity; /* 0=none, 1=odd, 2=even */
uint8_t bits; /* Number of bits (5-9) */
uint8_t irq; /* SERCOM IRQ number */
bool isconsole; /* True: The USART is the console device */
bool stopbits2; /* True: Configure with 2 stop bits instead of 1 */
uint32_t baud; /* Configured baud */
port_pinset_t pad0; /* Pin configuration for PAD0 */
port_pinset_t pad1; /* Pin configuration for PAD1 */
port_pinset_t pad2; /* Pin configuration for PAD2 */
port_pinset_t pad3; /* Pin configuration for PAD3 */
uint32_t muxconfig; /* Pad multiplexing configuration */
uintptr_t base; /* SERCOM base address */
};
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
#ifdef SAMD_HAVE_USART0
EXTERN const struct sam_usart_config_s g_usart0config;
#endif
#ifdef SAMD_HAVE_USART1
EXTERN const struct sam_usart_config_s g_usart1config;
#endif
#ifdef SAMD_HAVE_USART2
EXTERN const struct sam_usart_config_s g_usart2config;
#endif
#ifdef SAMD_HAVE_USART3
EXTERN const struct sam_usart_config_s g_usart3config;
#endif
#ifdef SAMD_HAVE_USART4
EXTERN const struct sam_usart_config_s g_usart4config;
#endif
#ifdef SAMD_HAVE_USART5
EXTERN const struct sam_usart_config_s g_usart5config;
#endif
EXTERN const struct sam_usart_config_s *g_usartconfig[SAMD_NSERCOM];
/************************************************************************************
* Public Functions
************************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_SAMD_SAM_USART_H */