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Code: Select all

enum LedModes
{
	Off,
	Blink,
	On,
}
LedModes mode;

void Main()
{
	Timer.SetInterval(blinkSpeed);
	Timer.Start();
}

void TimerCallback
{
	if(mode == Off && GetLed() == 1)
	{
		SetLed(0);
	}

	if(mode == Blink)
	{
		if(GetLed() == 1)
			SetLed(0);
		else
			SetLed(1);
	}

	if(mode == On && GetLed() == 0)
	{
		SetLed(1);
	}
}

Code: Select all

typedef enum {
    LED_STATE_OFF,
    LED_STATE_ON,
    LED_STATE_BLINKING
} led_state_t;


void task_function(void *pvParameter) {
	led_state_t current_led_state = LED_STATE_BLINKING;
	bool pinState = false;
	
    while (1) {
		
		// Wait for a notification from the timer
		led_state_t requestedState;
        ulTaskNotifyTake(&requestedState, pdMS_TO_TICKS(500));	//blinking 1Hz
		
		//Change led mode if requested by notification
		if(requestedState != current_led_state)
			current_led_state = requestedState;
		
		if(current_led_state == LED_STATE_BLINKING)
		{
			// Toggle the LED state
			pinState = !pinState;	
			gpio_set_level(LED_GPIO_PIN, ledState);
		}

		if(current_led_state == LED_STATE_ON)
		{
			// Toggle the LED state
			if(pinState == false)
			{
				pinState = true;
				gpio_set_level(LED_GPIO_PIN, pinState);
			}
		}
		
		if(current_led_state == LED_STATE_OFF)
		{
			// Toggle the LED state
			if(pinState == true)
			{
				pinState = false;
				gpio_set_level(LED_GPIO_PIN, pinState);
			}
		}
    }
}

// Function to be executed when the timer expires
void timer_callback(TimerHandle_t xTimer) {
    BaseType_t xHigherPriorityTaskWoken = pdFALSE;

    // Notify the task
    xTaskNotifyFromISR(xTimerGetTimerDaemonTaskHandle(), 0, LED_STATE_OFF, &xHigherPriorityTaskWoken);

    // If xHigherPriorityTaskWoken is pdTRUE, a context switch should be requested
    if (xHigherPriorityTaskWoken == pdTRUE) {
        portYIELD_FROM_ISR();
    }
}

void app_main() {
    // Configure the LED GPIO pin
    gpio_config_t io_conf;
    io_conf.pin_bit_mask = (1ULL << LED_GPIO_PIN);
    io_conf.mode = GPIO_MODE_OUTPUT;
    gpio_config(&io_conf);

    // Create a task
    xTaskCreate(task_function, "task", 2048, NULL, 5, NULL);

    // Create a timer, expire after 20sec
    TimerHandle_t timer = xTimerCreate("timer", pdMS_TO_TICKS(20000), pdFALSE, (void *)0, timer_callback);

    if (timer != NULL) {
        // Start the timer
        xTimerStart(timer, 0);


    }
	
	
	
	while (1) {
		vTaskDelay(pdMS_TO_TICKS(1000));
	}
}