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/************************************************************************************
* configs/arduino-due/src/arduino-due.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_ARDUINO_DUE_SRC_ARDUNO_DUE_H
#define __CONFIGS_ARDUINO_DUE_SRC_ARDUNO_DUE_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <stdint.h>
#include <arch/irq.h>
#include <nuttx/irq.h>
#include "chip/sam_pinmap.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* There are three user-controllable LEDs on board the Arduino Due board:
*
* LED GPIO
* ---------------- -----
* L Amber LED PB27
* TX Yellow LED PA21
* RX Yellow LED PC30
*
* LED L is connected to ground and can be illuminated by driving the PB27
* output high. The TX and RX LEDs are pulled high and can be illuminated by
* driving the corresponding
* GPIO output to low.
*
* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
* defined. In that case, the usage by the board port is defined in
* include/board.h and src/sam_leds.c. The LEDs are used to encode OS-related
* events as follows:
*
* SYMBOL MEANING LED STATE
* L TX RX
* ------------------- ----------------------- -------- -------- --------
* LED_STARTED NuttX has been started OFF OFF OFF
* LED_HEAPALLOCATE Heap has been allocated OFF OFF OFF
* LED_IRQSENABLED Interrupts enabled OFF OFF OFF
* LED_STACKCREATED Idle stack created ON OFF OFF
* LED_INIRQ In an interrupt N/C GLOW OFF
* LED_SIGNAL In a signal handler N/C GLOW OFF
* LED_ASSERTION An assertion failed N/C GLOW OFF
* LED_PANIC The system has crashed N/C N/C Blinking
* LED_IDLE MCU is is sleep mode ------ Not used --------
*
* Thus if LED L is statically on, NuttX has successfully booted and is,
* apparently, running normmally. If LED RX is glowing, then NuttX is
* handling interupts (and also signals and assertions). If TX is flashing
* at approximately 2Hz, then a fatal error has been detected and the system
*/
#define GPIO_LED_L (GPIO_OUTPUT | GPIO_CFG_PULLUP | GPIO_OUTPUT_CLEAR | \
GPIO_PORT_PIOB | GPIO_PIN27)
#define GPIO_LED_RX (GPIO_OUTPUT | GPIO_CFG_PULLUP | GPIO_OUTPUT_SET | \
GPIO_PORT_PIOC | GPIO_PIN30)
#define GPIO_LED_TX (GPIO_OUTPUT | GPIO_CFG_PULLUP | GPIO_OUTPUT_SET | \
GPIO_PORT_PIOA | GPIO_PIN21)
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public data
************************************************************************************/
#ifndef __ASSEMBLY__
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: sam_sram_initialize
*
* Description:
* Configure and enable SRAM on board the SAM4S Xplained
*
************************************************************************************/
#ifdef CONFIG_ARCH_EXTSRAM0
void sam_sram_initialize(void);
#endif
/************************************************************************************
* Name: up_ledinit
************************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void up_ledinit(void);
#endif
#endif /* __ASSEMBLY__ */
#endif /* __CONFIGS_ARDUINO_DUE_SRC_ARDUNO_DUE_H */
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