Tty for serial port to Arduino from Linino

Official Hardware Classic Yún
25

Thanks for the update. Here's my Firmata setup(). Its very similar to yours. The only difference is a section to wait for the U-boot to complete, and I set the baud to 115200 which works like a champ. I stole the U-boot section from Bridge.cpp.

void setup() 
{
  Serial1.begin(115200); // Set the baud.
  
   // Wait for U-boot to finish startup.  Consume all bytes until we are done.
  do {
     while (Serial1.available() > 0) {
        Serial1.read();
        }
    
    delay(1000);
  } while (Serial1.available()>0);
  
  Serial.begin(9600); // For logging.
  
  Firmata.setFirmwareVersion(FIRMATA_MAJOR_VERSION, FIRMATA_MINOR_VERSION);

  Firmata.attach(ANALOG_MESSAGE, analogWriteCallback);
  Firmata.attach(DIGITAL_MESSAGE, digitalWriteCallback);
  Firmata.attach(REPORT_ANALOG, reportAnalogCallback);
  Firmata.attach(REPORT_DIGITAL, reportDigitalCallback);
  Firmata.attach(SET_PIN_MODE, setPinModeCallback);
  Firmata.attach(START_SYSEX, sysexCallback);
  Firmata.attach(SYSTEM_RESET, systemResetCallback);

  Firmata.begin(Serial1);
  systemResetCallback();  // reset to default config
}