Hands-On RTOS with Microcontrollers

Task C (low priority)

Task C is responsible for blinking the blue LED, but only after the semPtr has been taken (within 200 ms of requesting it). The following excerpt has been taken from mainSemPriorityInversion.c:

while(1)  {    //'take' the semaphore with a 200mS timeout    SEGGER_SYSVIEW_PrintfHost("attempt to take semPtr");    if(xSemaphoreTake(semPtr, 200/portTICK_PERIOD_MS) == pdPASS)    {      RedLed.Off();      SEGGER_SYSVIEW_PrintfHost("received semPtr");      blinkTwice(&BlueLed);      xSemaphoreGive(semPtr);    }    else    {      //this code is called when the semaphore wasn't taken in time      SEGGER_SYSVIEW_PrintfHost("FAILED to receive "                                    "semphr in time");      RedLed.On();    }  }

TaskC() is relying on the same semaphore as TaskA(). The only difference is that TaskC() is blinking ...