wireless_temp_sensor_receiver/wireless_temp_sensor_receiver.ino

// Define which pins to use for different tasks
const int rxPinA      = 7;  // 433MHz RX, Connected to pin 7
const int ledPin      = 17; // The RX LED has a defined Arduino pin

// This code is only run once at startup
void setup()
{
    // Setup mode of each pin that we will use
    pinMode(ledPin, OUTPUT);  // Set LED-pin as an output
    pinMode(rxPinA, INPUT);

    // Call the function that configures the interrupts
    cli(); // Clear interrupt
    setup_timer_interrupt();
    sei(); // Enable interrupt

    // Setup the different serial communication channels
    Serial.begin(9600);  // Serial monitor (Over USB, when debugging with Arduino)
    Serial1.begin(9600); // HW-UART (To Raspberry)
}

// This code is called over and oven again
void loop()
{
    static uint16_t width;              // Stores the length of the received pulse
    static unsigned long totalRx = 0;   // The total number of received pulses

    if ( rcvDeQueue(&width) ) {
        
        totalRx++;  // Increase the total received pulses

        // Check if the received pulse is within limits for a start-pulse
        if ( 3400 <= width && width <= 3800 ) {
            Serial.print("Received one !  Total pulses: ");
            Serial.println(totalRx);
        }

    }
}