156 lines
5.7 KiB
C
156 lines
5.7 KiB
C
/****************************************************************************
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* configs/sama5d2-xult/src/sam_autoleds.c
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*
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* Copyright (C) 2015 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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/* There is an RGB LED on board the SAMA5D2-XULT. The RED component is
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* driven by the SDHC_CD pin (PA13) and so will not be used. The LEDs are
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* provided VDD_LED and so bringing the LED low will will illuminated the
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* LED.
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*
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* ------------------------------ ------------------- ---------------------
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* SAMA5D2 PIO SIGNAL USAGE
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* ------------------------------ ------------------- ---------------------
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* PA13 SDHC_CD_PA13 Red LED
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* PB5 LED_GREEN_PB5 Green LED
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* PB0 LED_BLUE_PB0 Blue LED
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* ------------------------------ ------------------- ---------------------
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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. Note that only the GREEN LED is used in this case
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*
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* SYMBOL Meaning Green LED
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* ------------------- ----------------------- ---------
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* LED_STARTED NuttX has been started OFF
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* LED_HEAPALLOCATE Heap has been allocated OFF
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* LED_IRQSENABLED Interrupts enabled OFF
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* LED_STACKCREATED Idle stack created ON
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* LED_INIRQ In an interrupt N/C
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* LED_SIGNAL In a signal handler N/C
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* LED_ASSERTION An assertion failed N/C
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* LED_PANIC The system has crashed FLASH
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*
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* Thus if the Green LED is statically on, NuttX has successfully booted
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* and is, apparently, running normally. If LED is flashing at
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* approximately 2Hz, then a fatal error has been detected and the system
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* has halted.
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*/
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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 <stdint.h>
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#include <stdbool.h>
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#include <debug.h>
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#include <nuttx/board.h>
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#include <arch/board/board.h>
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#include "sam_pio.h"
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#include "sama5d2-xult.h"
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#ifdef CONFIG_ARCH_LEDS
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_autoled_initialize
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****************************************************************************/
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void board_autoled_initialize(void)
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{
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/* Configure LED PIOs for output */
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sam_configpio(PIO_LED_GREEN);
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}
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/****************************************************************************
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* Name: board_autoled_on
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****************************************************************************/
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void board_autoled_on(int led)
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{
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switch (led)
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{
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default:
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case 0: /* LED_STARTED, LED_HEAPALLOCATE, LED_IRQSENABLED */
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break; /* Leave Green LED off */
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case 1: /* LED_STACKCREATED */
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case 3: /* LED_PANIC */
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{
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/* Green LED is ON (Low illuminates) */
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sam_piowrite(PIO_LED_GREEN, false);
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}
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break;
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case 2: /* LED_INIRQ, LED_SIGNAL, LED_ASSERTION */
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break; /* No change */
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}
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}
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/****************************************************************************
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* Name: board_autoled_off
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****************************************************************************/
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void board_autoled_off(int led)
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{
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switch (led)
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{
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default:
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case 0: /* LED_STARTED, LED_HEAPALLOCATE, LED_IRQSENABLED, */
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case 1: /* LED_STACKCREATED */
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break; /* Will not happen */
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case 2: /* LED_INIRQ, LED_SIGNAL, LED_ASSERTION */
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break; /* No change */
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case 3: /* LED_PANIC */
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{
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/* Power LED is OFF (Low illuminates) */
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sam_piowrite(PIO_LED_GREEN, true);
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}
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break;
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}
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}
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#endif /* CONFIG_ARCH_LEDS */
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