138 lines
4.8 KiB
C
138 lines
4.8 KiB
C
/****************************************************************************
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* boards/arm/samv7/samv71-xult/src/sam_autoleds.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/* LEDs
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*
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* There are two yellow LED available on the SAM V71 Xplained Ultra board
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* that can be turned on and off. The LEDs can be activated by driving the
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* connected I/O line to GND.
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*
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* ------ ----------- ---------------------
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* SAMV71 Function Shared functionality
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* GPIO
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* ------ ----------- ---------------------
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* PA23 Yellow LED0 EDBG GPIO
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* PC09 Yellow LED1 LCD, and Shield
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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_autoleds.c. The LEDs are used to encode
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* OS-related events as follows:
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*
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* ------------------- ----------------------- -------- --------
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* SYMBOL Meaning LED state
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* LED0 LED1
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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 N/C Blinking
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* LED_IDLE MCU is is sleep mode Not used
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* ------------------- ----------------------- -------- --------
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*
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* Thus if LED0 is statically on, NuttX has successfully booted and is,
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* apparently, running normally. If LED1 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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* NOTE: That LED0 is not used after completion of booting and may
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* be used by other board-specific logic.
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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 <assert.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_gpio.h"
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#include "samv71-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 GPIOs for output */
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sam_configgpio(GPIO_LED0);
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sam_configgpio(GPIO_LED1);
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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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case 0: /* LED_STARTED, LED_HEAPALLOCATE, LED_IRQSENABLED */
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break;
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case 1: /* LED_STACKCREATED */
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sam_gpiowrite(GPIO_LED0, false); /* Low illuminates */
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break;
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default:
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case 2: /* LED_INIRQ, LED_SIGNAL, LED_ASSERTION */
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return;
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case 3: /* LED_PANIC */
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sam_gpiowrite(GPIO_LED1, false); /* Low illuminates */
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break;
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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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if (led == 3)
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{
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sam_gpiowrite(GPIO_LED1, true); /* High extinguishes */
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}
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}
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#endif /* CONFIG_ARCH_LEDS */
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