131 lines
5.4 KiB
C
131 lines
5.4 KiB
C
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/************************************************************************************
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* configs/arduino-due/src/arduino-due.h
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __CONFIGS_ARDUINO_DUE_SRC_ARDUNO_DUE_H
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#define __CONFIGS_ARDUINO_DUE_SRC_ARDUNO_DUE_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include <stdint.h>
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#include <arch/irq.h>
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#include <nuttx/irq.h>
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#include "chip/sam_pinmap.h"
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* There are two user-controllable LEDs on board the Arduino Due board:
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*
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* LED GPIO
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* ---------------- -----
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* TX Yellow LED PA21
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* RX Yellow LED PC30
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*
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* Both are pulled high and can be illuminated by driving the corresponding
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* GPIO output to low.
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*
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* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
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* defined. In that case, the usage by the board port is defined in
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* include/board.h and src/sam_leds.c. The LEDs are used to encode OS-related
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* events as follows:
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*
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* SYMBOL Meaning LED state
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* RX TX
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* ------------------- ----------------------- -------- --------
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* LED_STARTED NuttX has been started OFF OFF
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* LED_HEAPALLOCATE Heap has been allocated OFF OFF
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* LED_IRQSENABLED Interrupts enabled OFF OFF
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* LED_STACKCREATED Idle stack created ON OFF
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* LED_INIRQ In an interrupt No change
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* LED_SIGNAL In a signal handler No change
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* LED_ASSERTION An assertion failed No change
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* LED_PANIC The system has crashed OFF Blinking
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* LED_IDLE MCU is is sleep mode Not used
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*
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* Thus if RX is statically on, NuttX has successfully booted and is,
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* apparently, running normmally. If TX is flashing at approximately
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* 2Hz, then a fatal error has been detected and the system has halted.
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*/
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#define GPIO_LED_RX (GPIO_OUTPUT | GPIO_CFG_PULLUP | GPIO_OUTPUT_SET | \
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GPIO_PORT_PIOC | GPIO_PIN30)
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#define GPIO_LED_TX (GPIO_OUTPUT | GPIO_CFG_PULLUP | GPIO_OUTPUT_SET | \
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GPIO_PORT_PIOA | GPIO_PIN21)
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/************************************************************************************
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* Public data
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************************************************************************************/
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#ifndef __ASSEMBLY__
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: sam_sram_initialize
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*
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* Description:
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* Configure and enable SRAM on board the SAM4S Xplained
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*
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************************************************************************************/
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#ifdef CONFIG_ARCH_EXTSRAM0
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void sam_sram_initialize(void);
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#endif
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/************************************************************************************
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* Name: up_ledinit
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************************************************************************************/
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#ifdef CONFIG_ARCH_LEDS
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void up_ledinit(void);
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __CONFIGS_ARDUINO_DUE_SRC_ARDUNO_DUE_H */
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