//Mailbox Management:

#include <Arduino_FreeRTOS.h>
#include <queue.h>

QueueHandle_t     xMailbox;
TaskHandle_t       TaskHandle_1; // handler for Task1
TaskHandle_t       TaskHandle_2; // handler for Task2
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  xMailbox = xQueueCreate(1, sizeof( int32_t));
 // Serial.begin(9600); // Enable serial communication library.
  xTaskCreate(vUpdateMailbox, "Sender", 100, NULL, 1, &TaskHandle_1);
  xTaskCreate(vReadMailbox, "Receiver", 100, NULL, 1, &TaskHandle_2);
}
void loop()
{
  // put your main code here, to run repeatedly:
}
void vUpdateMailbox(void )
{
int32_t ulNewValue = 1;
while(1)
{
xQueueOverwrite( xMailbox, &ulNewValue);
Serial.println("Data written to mailbox");
ulNewValue++;
vTaskDelay(500);
}
}

BaseType_t vReadMailbox(void )
{
int32_t value_received;
while(1)
{
xQueuePeek( xMailbox, &value_received, portMAX_DELAY );
Serial.print("Data Read from mailbox = ");
Serial.println(value_received);
vTaskDelay(100);
}
}