Arduino Uno is the USB Rx Tx connected to Pin0 and Pin 1 ?

Projects Programming
1

When Serial.begin(9600) is called and I send hex data using Serial.write is the serial data being sent to Pin 1 and aswell as USB UART Tx line ?

I need to send HEX data using pin 1
AA13FE010113
AA13FE010012

Here is my code

uint8_t cmdON[] = { 0xAA, 0x13, 0xFE, 0x01, 0x01, 0x13 };
uint8_t cmdOFF[] = { 0xAA, 0x13, 0xFE, 0x01, 0x00, 0x12 };

void setup() {
Serial.begin(9600);
}

void loop() {

Serial.write( cmdON, sizeof(cmdON) );
delay(5000); // wait for a second
Serial.write( cmdOFF, sizeof(cmdOFF) );
delay(5000); // wait for a second
}

if this is incorrect please advise thx

2

Yes there is only one serial port on the arduino uno. If you need more, you can use the SoftwareSerial library.

3

s the serial data being sent to Pin 1 and aswell as USB UART Tx line ?

Yes, does this cause some type of problem?