Can Arduino Baud Rate be changed at Runtime?

Question

For auto configuration of attached modules, ie ESP, GPS etc etc... I'm looking for changing the Baud at runtime to see which one is correct.

Can this be done?

Answer 1

Serial.begin(9600);
while(Serial.available()) Serial.read();

// Do some ping-pong and check if something is coming along.
// If not change the Baud and try again

Serial.flush();
Serial.begin(115200);
while(Serial.available()) Serial.read();