Esp32-s3 with FREERtos library

Hardware
1

Hi everyone,
I am dealing with problem during implementation RTOS blinking LED on esp32. I want to send message during the execution of the task and I receive only "<0>". Here is my code:

#define RED 43
#define GREEN 44
#define YELLOW 1

void setup() {
  Serial.begin(115200);
  delay(100);
  xTaskCreate(redLedControllerTask, "RED LED Task", 1024, NULL, 1, NULL);
  xTaskCreate(greenLedControllerTask, "GREEN LED Task", 1024, NULL, 1, NULL);
  xTaskCreate(yellowLedControllerTask, "YELLOW LED Task", 1024, NULL, 1, NULL);
}

void redLedControllerTask(void *pvParameters)
{
  pinMode(RED, OUTPUT);
  while(1)
  {
    digitalWrite(RED, digitalRead(RED)^1);
    Serial.print("TASK RED");
    vTaskDelay(500);
  }
}

void greenLedControllerTask(void *pvParameters)
{
  pinMode(GREEN, OUTPUT);
  while(1)
  {
    digitalWrite(GREEN, digitalRead(GREEN)^1);
    Serial.print("TASK GREEN");
    vTaskDelay(500);
  }
}

void yellowLedControllerTask(void *pvParameters)
{
  pinMode(YELLOW, OUTPUT);
  while(1)
  {
    digitalWrite(YELLOW, digitalRead(YELLOW)^1);
    Serial.print("TASK YELLOW");
    vTaskDelay(500);
  }
}

void loop() {}

How I can send message from the task?

2

A slightly different way of dealing with freeRTOS on ESP32

3

Unfortunately that didn't help.

4

What does that mean to send a message from the task?

5

To send message to serial port from the task as it is shown in code.

6

Those task as they are written do not produce any serial monitor output?

What does this line of code mean:

`digitalWrite(RED, digitalRead(RED)^1);`

Why not use digitialWrite(RED, HIGH ); or (digitialWrite(Red,LOW);? How do you read a digital pin that has been set as an output?

When you run this does it produce serial monitor output?

#define RED 43
#define GREEN 44
#define YELLOW 1

void setup() {
  Serial.begin(115200);
  delay(100);
  xTaskCreate(redLedControllerTask, "RED LED Task", 1024, NULL, 1, NULL);
  xTaskCreate(greenLedControllerTask, "GREEN LED Task", 1024, NULL, 1, NULL);
  xTaskCreate(yellowLedControllerTask, "YELLOW LED Task", 1024, NULL, 1, NULL);
}

void redLedControllerTask(void *pvParameters)
{
  //pinMode(RED, OUTPUT);
  while(1)
  {
    //digitalWrite(RED, digitalRead(RED)^1);
    Serial.print("TASK RED");
    vTaskDelay(500);
  }
}

void greenLedControllerTask(void *pvParameters)
{
  //pinMode(GREEN, OUTPUT);
  while(1)
  {
    //digitalWrite(GREEN, digitalRead(GREEN)^1);
    Serial.print("TASK GREEN");
    vTaskDelay(500);
  }
}

void yellowLedControllerTask(void *pvParameters)
{
  //pinMode(YELLOW, OUTPUT);
  while(1)
  {
    //digitalWrite(YELLOW, digitalRead(YELLOW)^1);
    Serial.print("TASK YELLOW");
    vTaskDelay(500);
  }
}

void loop() {}

Using pin1 of an ESP32 is not a good idea. And which ESP32 are you using that has pins 43 and 44?

7 
digitalWrite(RED, digitalRead(RED)^1);

That line will change output to LOW when it is HIGH and to HIGH when it is LOW.

When I turn off blinking LEDs then task send message via serial port.

I noticed when two LEDs are blinking then everything is allright but when I turn on third LED then serial port will recive only "<0>".

8

But it is only when I use commands digitialWrite(, HIGH ); and digitialWrite(,LOW)

9

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