[arduino code examples for A6v3]-05 RS232 communication test

Code:
#include "Arduino.h"



// Define RS232 pins

#define RS232_TXD 9 // TX pin

#define RS232_RXD 10 // RX pin



// Define RS232 communication

HardwareSerial RS232(1); // Use UART1



void setup() {

  // Initialize RS232 serial communication

  RS232.begin(9600, SERIAL_8N1, RS232_RXD, RS232_TXD); // Baud rate 9600, 8 data bits, no parity, 1 stop bit

  Serial.begin(115200); // Debug serial communication



  Serial.println("RS232 Communication Initialized");

}



void loop() {

  static unsigned long lastSendTime = 0;



  // Send a string to RS232 every 5 seconds

  if (millis() - lastSendTime >= 5000) {

    RS232.println("This is KinCony A6v3");

    Serial.println("Sent: This is KinCony A6v3");

    lastSendTime = millis();

  }



  // Check if data is available from RS232

  while (RS232.available()) {

    String receivedData = RS232.readStringUntil('\n'); // Read data from RS232

    RS232.println(receivedData); // Echo the received data back to RS232

    Serial.println("Received and echoed: " + receivedData); // Print the received data to the debug console

  }

}