ERROR: COR/home/runner/xQueue "work/esp32-arduino-lib-builder/esp32-arduino-li

PlatformIO Core
1

Please help me.
This message is meaningless for me!

The error happens in the beginning of code execution.

void setup()
{
  Serial.begin(115200);

...

  xTaskCreatePinnedToCore( 
      Core0_Setup,
      "Core 0 Setup",
      10000, 
      NULL, 
      1,
      &Core0_Setup_hdl,
      0);
...
}

The task comprehends:

void Core0_Setup(void *pvParameters)
{
    Serial.printf("\n\t[Core %u]: CORE 0 SETUP em %lums.",  xPortGetCoreID(), millis());
 
  startTimer();

  vQ_1s000 = xQueueCreate(10, sizeof(unsigned long));
  
  vTaskDelete(NULL);
};

Function startTimer:

void startTimer()
{
  timer = timerBegin(0, 80, true);
  timerAttachInterrupt(timer, &Contagem, true);
  timerAlarmWrite(timer, base_de_tempo, true);
  timerAlarmEnable(timer);
}

And the complete failure message:
"

    [Core 0]:duino-lib-builder/esp32-arduino-lib-builder/esp-idf/compone
    xQueue "nts/freertos/queue.c:1442 (xQueueGenericReceive)- assert failed!

abort() was called at PC 0x40086d39 on core 0

ELF file SHA256: 0000000000000000

Backtrace: 0x40085d80:0x3ffc6980 0x40085ffd:0x3ffc69a0 0x40086d39:0x3ffc69c0 0x400d1810:0x3ffc6a00 0x4008700e:0x3ffc6a30

Rebooting…
"

What should I check first?

Thank you.
Regards,
Ciro.

2

Is there any code calling into xQueueReceive? Is this the full code?

3

Yes, there is.
It happens in:

void vT_1s000(void *pvParameters) //                            *** CORE 0 - TASK vT_1s000
{ 
  unsigned long T_Chamada = 0;
  unsigned long atraso = 0;

  while (true)
  {
    if (xQueueReceive(vQ_1s000, &T_Chamada, portMAX_DELAY))
    {
      atraso = millis() - T_Chamada;

   Serial.printf("\n\t[Core %u]: TIMER - tempo de chamada = %lums, delay = %lums.", xPortGetCoreID(), T_Chamada, atraso);
    }
  }
}

Which is also created in setup() like:

  xTaskCreatePinnedToCore( //   função que monitora a chegada de elementos na queue vQ_1s000
      vT_1s000, 
      "Task 1s000",
      10000, 
      NULL,
      1, 
      &vT_1s000_hdl,
      0);
4

But then that’s a race condition? What if the vT_1s000() task is executed first before the Core0_Setup() task had a chance to vQ_1s000 = xQueueCreate()..? The queue creation should happen in setup(), before anything tries to access it…

5

WORKING…

I’ve moved the queue creation to the setup, before all tasks creation, and now it’s working perfectly.

Thank you very much.