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

SemaphoreHandle_t sh;

void vTask1( void *p)
{
	for( ;; )
	{
		printf("Task 1 is running %d \n",xTaskGetTickCount());
		xSemaphoreGive(sh);
		vTaskDelay(1000);
	 }
}

void vTask2( void *p)
{
	for( ;; )
	{
		printf("Task 2 is running %d \n",xTaskGetTickCount());
		xSemaphoreGive(sh);
		vTaskDelay(1000);
	}
}

void vTask3( void *p)
{
	for( ;; )
	{
		xSemaphoreTake(sh,1000);
		xSemaphoreTake(sh,1000);
		printf("Task 3 is running %d \n",xTaskGetTickCount());
		vTaskDelay(1000);
	}
}

int Example4( void )
{
	xTaskCreate( vTask1, "Task 1", 1000, NULL, 1, NULL );
	xTaskCreate( vTask2, "Task 2", 1000, NULL, 1, NULL );
	xTaskCreate( vTask3, "Task 3", 1000, NULL, 1, NULL );

	sh=xSemaphoreCreateBinary();
	vTaskStartScheduler();	
	
	for( ;; );
	return 0;
}