GoForSmoke:
The MEGA2560 has 3 extra hardware serial ports. Leave RX and TX (pins 0 and 1) alone so you can use them to debug on the PC through USB. RX1 through TX3 are pins 14-19, you can use 1 set for reading the Supra and another to feed the OLED. They can each have their own speed.Here I set up a MEGA using Serial (RX/TX) to USB and Serial1 (RX1/TX1) to an audio player:
void setup( void )
{
Serial.begin( 115200 );
Serial1.begin( 115200 );
pinMode( blinkPin, OUTPUT ); // should default LOW
Serial.println( "\nStartup" );
}
I can read the player as Serial1.read() and the PC as Serial.read().
Thank you very much for the reply. It is great to know I can use different BAUD rates for each serial line on the Mega. This may broaden my project to allow connecting a second serial input from my O2 sensor controller in the car and switch from displaying transmission info to displaying O2 sensor info, correct?