Crowpanel 7 Advance UART1

Comments

• Jennie

  September 3

  Dear Algirdas,
  ple try the following program:

  Here’s a minimal sketch for ESP32-S3 that outputs to both the USB serial (Serial) and a hardware UART (Serial1 on GPIO19/20) at the same time:

  void setup() {
    // USB Serial (shows up as COM port on your PC)
    Serial.begin(115200);
  
    // Hardware UART1 on GPIO19 (RX) and GPIO20 (TX)
    Serial1.begin(115200, SERIAL_8N1, 19, 20);
  
    // Small delay to stabilize
    delay(100);
  
    // Initial messages
    Serial.println("USB Serial ready!");
    Serial1.println("Hardware Serial1 ready!");
  }
  
  void loop() {
    // Print to both every second
    Serial.println("Hello from USB Serial!");
    Serial1.println("Hello from Serial1 (GPIO19/20)!");
    delay(1000);
  }
  

  ---

  ✅ On your PC’s Arduino Serial Monitor → you’ll see the Serial.println messages.
  ✅ On an external USB-to-TTL adapter connected to GPIO20 (TX) and GND → you’ll see the Serial1.println messages.

  Thanks!
  Best regards,