#include "FreeRTOS.h"
#include "task.h"
#include "semphr.h"

xSemaphoreHandle xBinarySemaphore;

void vHandlerTask(void *p)
{
	for( ;; )
	{
		xSemaphoreTake(xBinarySemaphore, portMAX_DELAY );
		printf("Handler task - Processing event.\n");
	}
}

void vPeriodicTask(void *p)
{
	for( ;; )
	{
		vTaskDelay( 500 / portTICK_RATE_MS );
		printf("Perodic task - About to generate an interrupt.\n");
		vPortGenerateSimulatedInterrupt(3);
		printf("Periodic task - Interrupt generated.\n\n\n");
	}
}

uint32_t ExampleISR(void)
{
    portBASE_TYPE xHigherPriorityTaskWoken=0;
		
	xSemaphoreGiveFromISR(xBinarySemaphore, &xHigherPriorityTaskWoken );
	if(xHigherPriorityTaskWoken)
	{
	return pdTRUE;
	}
	else
	return pdFALSE;
}

int Example5( void )
{
    xBinarySemaphore=xSemaphoreCreateBinary();

	vPortSetInterruptHandler(3,ExampleISR);
	

    xTaskCreate( vHandlerTask,"Handler", 1000, NULL,3 , NULL );
	xTaskCreate( vPeriodicTask,"Periodic", 1000, NULL, 1, NULL );

	vTaskStartScheduler();
			
 	for( ;; );
	return 0;
}