WiFi_433_Transceiver/main/led.c

#include "led.h"
#include "driver/gpio.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_log.h"

unsigned int blinkLed = 0;

#define BLINK_GPIO 2

// Interface function to blink the green LED
void blinkTheLED()
{
  blinkLed++;
}

enum
{
  MODE_INACTIVE,
  MODE_ON,
  MODE_OFF,
  MODE_SWITCH, // Just have been off
};

void rxLed()
{
  static unsigned long timer = 0;
  static int mode = MODE_INACTIVE;

  switch (mode)
  {

  case MODE_INACTIVE:
    if (blinkLed > 0)
    {
      blinkLed--;
      mode = MODE_ON;
      timer = 1;
      gpio_set_level(BLINK_GPIO, 0); // On
    }
    break;

  case MODE_ON:
    timer--;
    if (timer == 0)
    {
      mode = MODE_OFF;
      gpio_set_level(BLINK_GPIO, 1);
      timer = 1;
    }
    break;

  case MODE_OFF:
    timer--;
    if (timer == 0)
    {
      mode = MODE_INACTIVE;
      gpio_set_level(BLINK_GPIO, 1);
      break;
    }
  }
}

static void led_task(void *pvParameter)
{
    ESP_LOGI("LED", "Task started.");
    while (1)
    {
        rxLed();
        vTaskDelay(200 / portTICK_PERIOD_MS);
    }
    vTaskDelete(NULL);
}

void initLed()
{
    gpio_set_level(BLINK_GPIO, 0);
    gpio_pad_select_gpio(BLINK_GPIO);
    gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);

    xTaskCreatePinnedToCore(&led_task, "Led_Task", 8192, NULL, tskIDLE_PRIORITY + 1, NULL, 0);
}