quack/main/led.c

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/*
* led.c
* quack
*
* Created by Michel DEPEIGE on 15/12/2020.
* Copyright (c) 2020 Michel DEPEIGE.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING); if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
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*/
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#include <stdio.h>
#include "driver/gpio.h"
#include "sdkconfig.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "esp_spi_flash.h"
#include "led.h"
#include "gpio.h"
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/* global variables for tasks handles */
TaskHandle_t t_green, t_blue, t_yellow, t_red;
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/* init all leds, blink everything once and start background tasks */
void led_init(void) {
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/* blink allds LEDs once */
gpio_set_level(GPIO_GREENLED, 1);
gpio_set_level(GPIO_BLUELED, 1);
gpio_set_level(GPIO_YELLOWLED, 1);
gpio_set_level(GPIO_REDLED, 1);
vTaskDelay(125 / portTICK_PERIOD_MS);
gpio_set_level(GPIO_GREENLED, 0);
gpio_set_level(GPIO_BLUELED, 0);
gpio_set_level(GPIO_YELLOWLED, 0);
gpio_set_level(GPIO_REDLED, 0);
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xTaskCreate(led_task, "GREEN", 1024, (void *) GPIO_GREENLED, tskIDLE_PRIORITY, &t_green);
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xTaskCreate(led_task, "BLUE", 1024, (void *) GPIO_BLUELED, tskIDLE_PRIORITY, &t_blue);
xTaskCreate(led_task, "YELLOW", 1024, (void *) GPIO_YELLOWLED, tskIDLE_PRIORITY, &t_yellow);
xTaskCreate(led_task, "RED", 1024, (void *) GPIO_REDLED, tskIDLE_PRIORITY, &t_red);
/* blink green led fast (we are booting...) */
xTaskNotify(t_green, LED_FAST, eSetValueWithOverwrite);
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}
void led_task(void *pvParameters) {
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unsigned int color = (unsigned int)pvParameters;
unsigned int mode = LED_OFF;
TickType_t wait = portMAX_DELAY;
/* start only if there is a led specified */
configASSERT(((uint32_t) pvParameters) > 0);
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while (1) {
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xTaskNotifyWait(0, 0, &mode, wait);
switch (mode)
{
case LED_OFF:
gpio_set_level(color, 0);
wait = portMAX_DELAY;
break;
case LED_ON:
gpio_set_level(color, 1);
wait = portMAX_DELAY;
break;
case LED_ONCE:
gpio_set_level(color, 1);
vTaskDelay(40 / portTICK_PERIOD_MS);
gpio_set_level(color, 0);
wait = portMAX_DELAY;
break;
case LED_FAST:
gpio_set_level(color, 1);
vTaskDelay(40 / portTICK_PERIOD_MS);
gpio_set_level(color, 0);
wait = 40 / portTICK_PERIOD_MS;
break;
case LED_SLOW:
gpio_set_level(color, 1);
vTaskDelay(500 / portTICK_PERIOD_MS);
gpio_set_level(color, 0);
wait = 500 / portTICK_PERIOD_MS;
break;
default:
break;
}
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}
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gpio_set_level(color, 1);
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}