Posted on November 11, 2017 at 02:40Suppose you port your freeRTOS successfully.
Try the following codes, pretty mush the same as the example in chapter 9 of the ref book I gave you.
/* The tasks to be created. */
static void vHandlerTask( void *pvParameters );
/* Stores the handle of the task to which interrupt processing is deferred. */
static TaskHandle_t xTaskHandler = NULL;
int main(void)
{
/*your initialization codes*/
/* Create the 'handler' task, which is the task to which interrupt
processing is deferred, and so is the task that will be synchronized
with the interrupt.*/
xTaskCreate( vHandlerTask, 'Handler', 128, NULL, 3, &xTaskHandler );
/* Start the scheduler so the created tasks start executing. */
vTaskStartScheduler();
}
static void vHandlerTask( void *pvParameters )
{
uint32_t ulNotifyValue;
for(;;)
{
/* Wait to receive a notification sent directly to this task from the interrupt handler. */
ulNotifyValue = ulTaskNotifyTake(pdTRUE, 0xFFFFFFFF);
if(ulNotifyValue != 0)
{
/*Your task job here*/
BSP_LED_Toggle(LED1);
}
}
}
/*Your general GPIO_EXTI Callbacks here*/
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
/* The xHigherPriorityTaskWoken parameter must be initialized to pdFALSE */
BaseType_t xHigherPriorityTaskWoken;
xHigherPriorityTaskWoken = pdFALSE;
/* your user button callback here*/
if(GPIO_Pin == USER_BTN_PIN)
{
/* Send the notification directly to the task handler*/
vTaskNotifyGiveFromISR( xTaskHandler, &xHigherPriorityTaskWoken );
/*If xHigherPriorityTaskWoken was set to pdTRUE inside vTaskNotifyGiveFromISR()
then calling portYIELD_FROM_ISR() will request a context switch. */ portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
}
}
It works in my Discovery F412.
You may also use oscilloscope to check the time between the button push and the trigger of your task.
Good Luck, rolly!
.Zt
