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nuttx/configs/sam4l-xplained/include/board.h

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/************************************************************************************
* configs/sam4l-xplained/include/board.h
*
* 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.
*
************************************************************************************/
#ifndef __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H
#define __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
# ifdef CONFIG_GPIO_IRQ
# include <arch/irq.h>
# endif
#endif
/************************************************************************************
* Definitions
************************************************************************************/
/* Clocking *************************************************************************/
/* Select the DFLL as the source of the system clock.
*
* Options (define one):
* BOARD_SYSCLK_SOURCE_RCSYS - System RC oscillator
* BOARD_SYSCLK_SOURCE_OSC0 - Oscillator 0
* BOARD_SYSCLK_SOURCE_PLL0 - Phase Locked Loop 0
* BOARD_SYSCLK_SOURCE_DFLL0 - Digital Frequency Locked Loop
* BOARD_SYSCLK_SOURCE_RC80M - 80 MHz RC oscillator
* BOARD_SYSCLK_SOURCE_FCFAST12M - 12 MHz RC oscillator
* BOARD_SYSCLK_SOURCE_FCFAST8M - 8 MHz RC oscillator
* BOARD_SYSCLK_SOURCE_FCFAST4M - 4 MHz RC oscillator
* BOARD_SYSCLK_SOURCE_RC1M - 1 MHz RC oscillator
*/
#define BOARD_SYSCLK_SOURCE_DFLL0 1
/* Nominal frequencies in on-chip RC oscillators. These are *not* configurable
* but appear here for use in frequency calculations. NOTE: These may frequencies
* may vary with temperature changes.
*/
#define BOARD_RCSYS_FREQUENCY 115000 /* Nominal frequency of RCSYS (Hz) */
#define BOARD_RC32K_FREQUENCY 32768 /* Nominal frequency of RC32K (Hz) */
#define BOARD_RC80M_FREQUENCY 80000000 /* Nominal frequency of RC80M (Hz) */
#define BOARD_RCFAST4M_FREQUENCY 4000000 /* Nominal frequency of RCFAST4M (Hz) */
#define BOARD_RCFAST8M_FREQUENCY 8000000 /* Nominal frequency of RCFAST8M (Hz) */
#define BOARD_RCFAST12M_FREQUENCY 12000000 /* Nominal frequency of RCFAST12M (Hz) */
#define BOARD_RC1M_FREQUENCY 1000000 /* Nominal frequency of RC1M (Hz) */
/* The SAM4L Xplained Pro has two on-board crystals:
* XC100 12MHz OSC0
* XC101 32.768KHz OSC32
*/
/* OSC0 Configuration */
#define BOARD_OSC0_FREQUENCY 12000000 /* 12MHz XTAL */
/* OSC32 Configuration */
#define BOARD_OSC32_FREQUENCY 32768 /* 32.768KHz XTAL */
#define BOARD_OSC32_STARTUP_US 6100
#define BOARD_OSC32_SELCURR BSCIF_OSCCTRL32_SELCURR_300
#define BOARD_OSC32_ISXTAL 1 /* OSC32 is a crystal */
/* Digital Frequency Locked Loop configuration
* Fdfll = (Fclk * DFLLmul) / DFLLdiv
* = 32768 * (48000000/32768) / 1 = 48MHz
*
* The actual frequency is 47.97MHz due to truncation of the multiplier.
* The 48MHz target value is treated as "not-to-exceed" value). Use OSC0
* if you need more accuracy (12MHz with a multiplier of 4).
*
* DFLL0 source options (select one):
* BOARD_DFLL0_SOURCE_RCSYS - System RC oscillator
* BOARD_DFLL0_SOURCE_OSC32K - 32.768KHz oscillator
* BOARD_DFLL0_SOURCE_OSC0 - Oscillator 0
* BOARD_DFLL0_SOURCE_RC80M - 80 MHz RC oscillator
* BOARD_DFLL0_SOURCE_RC32K - 32 kHz RC oscillator
*
* NOTE: Nothing must be defined if the DFPLL is not used
*/
#define BOARD_DFLL0_SOURCE_OSC32K 1
#define BOARD_DFLL0_TARGET 48000000
#define BOARD_DFLL0_MUL (BOARD_DFLL0_TARGET / BOARD_OSC32_FREQUENCY)
#define BOARD_DFLL0_DIV 1
#define BOARD_DFLL0_FREQUENCY (BOARD_OSC32_FREQUENCY * BOARD_DFLL0_MUL / BOARD_DFLL0_DIV)
/* Phase Locked Loop configuration
* Fdfll = (Fclk * PLLmul) / PLLdiv
*
* PLL0 source options (select one):
* BOARD_PLL0_SOURCE_OSC0 - Oscillator 0
* BOARD_PLL0_SOURCE_GCLK9 - General clock 9
*
* BOARD_GLCK9_SOURCE_RCSYS - System RC oscillator
* BOARD_GLCK9_SOURCE_OSC32K - Output from OSC32K
* BOARD_GLCK9_SOURCE_DFLL0 - Output from DFLL0
* BOARD_GLCK9_SOURCE_OSC0 - Output from Oscillator0
* BOARD_GLCK9_SOURCE_RC80M - Output from 80MHz RCOSC
* BOARD_GLCK9_SOURCE_RCFAST - Output from 4,8,12MHz RCFAST
* BOARD_GLCK9_SOURCE_RC1M - Output from 1MHz RC1M
* BOARD_GLCK9_SOURCE_CPUCLK - The CPU clock
* BOARD_GLCK9_SOURCE_HSBCLK - High Speed Bus clock
* BOARD_GLCK9_SOURCE_PBACLK - Peripheral Bus A clock
* BOARD_GLCK9_SOURCE_PBBCLK - Peripheral Bus B clock
* BOARD_GLCK9_SOURCE_PBCCLK - Peripheral Bus C clock
* BOARD_GLCK9_SOURCE_PBDCLK - Peripheral Bus D clock
* BOARD_GLCK9_SOURCE_RC32K - Output from 32kHz RCOSC
*
* NOTE: Nothing must be defined if the PLL0 is not used
*/
/* System clock dividers: Fbus = Fmck >> BUSshift */
#define BOARD_CPU_SHIFT 0 /* Fcpu = Fmck = 48MHz */
#define BOARD_PBA_SHIFT 0 /* Fpba = Fmck = 48MHz */
#define BOARD_PBB_SHIFT 0 /* Fpbb = Fmck = 48MHz */
#define BOARD_PBC_SHIFT 0 /* Fpbc = Fmck = 48MHz */
#define BOARD_PBD_SHIFT 0 /* Fpbd = Fmck = 48MHz */
/* Resulting frequencies */
#define BOARD_MCK_FREQUENCY (BOARD_DFLL0_FREQUENCY)
#define BOARD_CPU_FREQUENCY (BOARD_MCK_FREQUENCY >> BOARD_CPU_SHIFT)
#define BOARD_PBA_FREQUENCY (BOARD_MCK_FREQUENCY >> BOARD_PBA_SHIFT)
#define BOARD_PBB_FREQUENCY (BOARD_MCK_FREQUENCY >> BOARD_PBB_SHIFT)
#define BOARD_PBC_FREQUENCY (BOARD_MCK_FREQUENCY >> BOARD_PBC_SHIFT)
#define BOARD_PBD_FREQUENCY (BOARD_MCK_FREQUENCY >> BOARD_PBD_SHIFT)
/* USBC.
*
* "The USBC has two bus clocks connected: One High Speed Bus clock
* (CLK_USBC_AHB) and one Peripheral Bus clock (CLK_USBC_APB). These clocks
* are generated by the Power Manager. Both clocks are enabled at reset
* and can be disabled by the Power Manager. It is recommended to disable
* the USBC before disabling the clocks, to avoid freezing the USBC in
* an undefined state.
*
* "To follow the usb data rate at 12Mbit/s in full-speed mode, the
* CLK_USBC_AHB clock should be at minimum 12MHz.
*
* "The 48MHz USB clock is generated by a dedicated generic clock from
* the SCIF module. Before using the USB, the user must ensure that the
* USB generic clock (GCLK_USBC) is enabled at 48MHz in the SCIF module."
*
* USB Generic Clock 7 (GCLK_USBC) source selection (one only)
*
* BOARD_USBC_SRC_OSC0
* BOARD_USBC_SRC_PLL0
* BOARD_USBC_SRC_DFLL
* BOARD_USBC_SRC_GCLKIN0
*/
#define BOARD_USBC_SRC_DFLL 1 /* Source DFLL0 at 48MHz */
#define BOARD_USBC_GCLK_DIV 1 /* Fusb = Fdfll / 1 = 48MHz */
/* LED definitions ******************************************************************/
/* There are three LEDs on board the SAM4L Xplained Pro board: The EDBG
* controls two of the LEDs, a power LED and a status LED. There is only
* one user controllable LED, a yellow LED labelled LED0 near the SAM4L USB
* connector.
*
* This LED is controlled by PC07 and LED0 can be activated by driving the
* PC07 to GND.
*/
/* LED index values for use with sam_setled() */
#define BOARD_LED0 0
#define BOARD_NLEDS 1
/* LED bits for use with sam_setleds() */
#define BOARD_LED0_BIT (1 << BOARD_LED0)
/* When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
* control LED0 as defined below. Thus if LED0 is statically on, NuttX has
* successfully booted and is, apparently, running normally. If LED0 is
* flashing at approximately 2Hz, then a fatal error has been detected and the
* system has halted.
*/
#define LED_STARTED 0 /* LED0=OFF */
#define LED_HEAPALLOCATE 0 /* LED0=OFF */
#define LED_IRQSENABLED 0 /* LED0=OFF */
#define LED_STACKCREATED 1 /* LED0=ON */
#define LED_INIRQ 2 /* LED0=no change */
#define LED_SIGNAL 2 /* LED0=no change */
#define LED_ASSERTION 2 /* LED0=no change */
#define LED_PANIC 3 /* LED0=flashing */
/* Button definitions ***************************************************************/
/* QTouch button: The SAM4L Xplained Pro kit has one QTouch button. The connection
* to the SAM4L is:
*
* PC13 CATB_SENSE15
* PC14 CATB_DIS
*/
/* Mechanical buttons:
*
* The SAM4L Xplained Pro contains two mechanical buttons. One button is the
* RESET button connected to the SAM4L reset line and the other is a generic user
* configurable button. When a button is pressed it will drive the I/O line to GND.
*
* PC24 SW0
*/
/* The SAM4l Xplained Pro supports one button: */
#define BUTTON_SW0 0
#define NUM_BUTTONS 1
#define BUTTON_SW0_BIT (1 << BUTTON_SW0)
/* Alternate Function Disambiguation ************************************************/
/* USART0 is also available on connectors EXT1 and EXT4:
*
* EXT1 TXT4 GPIO Function
* ---- ---- ------ -----------
* 13 13 PB00 USART0_RXD
* 14 14 PB01 USART0_TXD
*/
#define GPIO_USART0_RXD GPIO_USART0_RXD_4
#define GPIO_USART0_TXD GPIO_USART0_TXD_4
/* The SAM4L Xplained Pro contains an Embedded Debugger (EDBG) that can be used to
* program and debug the ATSAM4LC4C using Serial Wire Debug (SWD). The Embedded
* debugger also include a Virtual Com port interface over USART1. Virtual COM
* port connections:
*
* PC26 USART1 RXD
* PC27 USART1 TXD
*/
#define GPIO_USART1_RXD GPIO_USART1_RXD_2
#define GPIO_USART1_TXD GPIO_USART1_TXD_2
/* SPI pins are brought out on EXT1 and EXT2 as:
*
* PA22 SPI/MOSI
* PA21 SPI/MISO
* PC30 SPI/SCK
*/
#define GPIO_SPI0_MISO GPIO_SPI0_MISO_1
#define GPIO_SPI0_MOSI GPIO_SPI0_MOSI_1
#define GPIO_SPI0_SPCK GPIO_SPI0_SPCK_4
/************************************************************************************
* 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_boardinitialize
*
* Description:
* All SAM3U architectures must provide the following entry point. This entry point
* is called early in the initialization -- after all memory has been configured
* and mapped but before any devices have been initialized.
*
************************************************************************************/
void sam_boardinitialize(void);
/************************************************************************************
* Name: sam_ledinit, sam_setled, and sam_setleds
*
* Description:
* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board LEDs. If
* CONFIG_ARCH_LEDS is not defined, then the following interfaces are available to
* control the LEDs from user applications.
*
************************************************************************************/
#ifndef CONFIG_ARCH_LEDS
void sam_ledinit(void);
void sam_setled(int led, bool ledon);
void sam_setleds(uint8_t ledset);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H */
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