I'm using an external Arduino Uno to read a few analog inputs and communicate with some chips via i2c. I have been able to serial.print that information on the Arduino Uno and the information is coming through correctly. I am trying to get this information to the UDOO board, but have been unsuccessful thus far. I would like to send this data to the UDOO and then send it to Pure Data (over the /dev/ttymxc3 port presumably?). What is the best way to do this?
I didn't understand the case. Do you want to pass data from Arduino UNO to A9 of UDOO? If that's the case, you can enable a serial in the external pinout and communicate with the pin 0-1 (serial) of Arduino UNO. Thus you don't need to use SAM3X, do you?
I just got it working. Sent Serial.write data through pin 0-1 on the Uno to pin 18-19 on the UDOO. Then read from Serial1 in UDOO and sent out info over Serial.write to Pure Data.