ESP32

 

#define RXD2 16
	#define TXD2 17
	void setup() {
	// Note the format for setting a serial port is as follows: Serial2.begin(baud-rate, protocol, RX pin, TX pin);
	Serial.begin(115200);
	//Serial1.begin(9600, SERIAL_8N1, RXD2, TXD2);
	Serial2.begin(9600, SERIAL_8N1, RXD2, TXD2);
	Serial.println("Serial Txd is on pin: "+String(TX));
	Serial.println("Serial Rxd is on pin: "+String(RX));
	}
	void loop() { //Choose Serial1 or Serial2 as required
	while (Serial2.available()) {
	Serial.print(char(Serial2.read()));
	}
	}
	/* Baud-rates available: 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, or 115200, 256000, 512000, 962100
	*
	* Protocols available:
	* SERIAL_5N1 5-bit No parity 1 stop bit
	* SERIAL_6N1 6-bit No parity 1 stop bit
	* SERIAL_7N1 7-bit No parity 1 stop bit
	* SERIAL_8N1 (the default) 8-bit No parity 1 stop bit
	* SERIAL_5N2 5-bit No parity 2 stop bits
	* SERIAL_6N2 6-bit No parity 2 stop bits
	* SERIAL_7N2 7-bit No parity 2 stop bits
	* SERIAL_8N2 8-bit No parity 2 stop bits
	* SERIAL_5E1 5-bit Even parity 1 stop bit
	* SERIAL_6E1 6-bit Even parity 1 stop bit
	* SERIAL_7E1 7-bit Even parity 1 stop bit
	* SERIAL_8E1 8-bit Even parity 1 stop bit
	* SERIAL_5E2 5-bit Even parity 2 stop bit
	* SERIAL_6E2 6-bit Even parity 2 stop bit
	* SERIAL_7E2 7-bit Even parity 2 stop bit
	* SERIAL_8E2 8-bit Even parity 2 stop bit
	* SERIAL_5O1 5-bit Odd parity 1 stop bit
	* SERIAL_6O1 6-bit Odd parity 1 stop bit
	* SERIAL_7O1 7-bit Odd parity 1 stop bit
	* SERIAL_8O1 8-bit Odd parity 1 stop bit
	* SERIAL_5O2 5-bit Odd parity 2 stop bit
	* SERIAL_6O2 6-bit Odd parity 2 stop bit
	* SERIAL_7O2 7-bit Odd parity 2 stop bit
	* SERIAL_8O2 8-bit Odd parity 2 stop bit
	*/