Sending Data from MAX78000FTHR Microcontroller to NodeMCU via UART Protocol

I’m currently working on a project where I need to send data from a MAX78000FTHR microcontroller to a NodeMCU (ESP8266) using the UART protocol. I’ve set up both devices and would like to establish a reliable communication channel between them.

Connections:

• MAX78000FTHR TX (Transmitter) → NodeMCU RX (Receiver)
• MAX78000FTHR RX (Receiver) → NodeMCU TX (Transmitter)
• Common Ground: Connect the ground (GND) pins of both devices together.

NodeMCU Code:
Here’s the code for the NodeMCU to receive the data:

void setup() {
    Serial.begin(9600);  // Initialize UART at 9600 baud rate
    Serial.println("Ready to receive data...");
}

void loop() {
    if (Serial.available()) {
        int incomingData = Serial.read();  // Read the incoming data
        Serial.print("Received: ");
        Serial.println(incomingData);        // Print the received data
    }
}

I need the sender code for the MAX78000FTHR microcontroller along with the necessary connections to send data to a NodeMCU via UART protocol.

I attempted to establish UART communication between the MAX78000FTHR microcontroller and a NodeMCU by wiring the TX and RX pins correctly. I expected the data sent from the MAX78000FTHR to be received and printed by the NodeMCU. However, the NodeMCU is not displaying the expected data, indicating a possible issue in the max78000fthr code or connections.`

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