Programming Timeout under FreeRTOS

It seems like the FreeRTOS has some support to program a timeout, but unpublished anywhere. I’ve checked the FreeRTOS source code, regarding the usage, and it seems like it’s quite safe to use it under user’s application.

Here’s what I’ve found:

xTimeOutType x_timeout; //< Var to hold the current time
portTickType openTimeout; //< Var to hold the timeout

// Set the initial time, where timeout will be started
vTaskSetTimeOutState(&x_timeout);
// Set the timeout value
openTimeout = 512; //< In RTOS tick

// To check the timeout
if(xTaskCheckForTimeOut(&x_timeout, &openTimeout) == pdTRUE)
{
  // It’s timeout
} else {
  // It’s not timeout yet.
}

You can also combined the technique with do-while loop (see my previous post).