#include <Arduino_FreeRTOS.h>

TaskHandle_t task_2_handle;

void setup() {
  Serial.begin(9600);
  xTaskCreate(task1, "send notification", 128,  NULL, 2,  NULL );
  xTaskCreate(task2, "receive notification", 128,  NULL, 2, &task_2_handle );
}

void loop()
{
  // Empty. Things are done in Tasks.
}

void task1(void *pvParameters)  
{
  while(1){
    Serial.println("Send a value of 10");
    xTaskNotify(task_2_handle, 10,eSetValueWithOverwrite);
    vTaskDelay( 5000 / portTICK_PERIOD_MS ); 
     }
}

void task2(void *pvParameters)  
{
  uint32_t value;
  while(1){
    if (xTaskNotifyWait(0x00,0x01,&value, portMAX_DELAY)){
      Serial.print("ValueReceived = ");
      Serial.println(value);
    }
     }
}