Hi, I've used and rc522 rfid module, connected to arduino side, to read rfid card. The sketch on arduino side work perfectly, but now I want to pass these data to the UDOO side. How to do this?
You have to use the serial device that is connected automatically. Normally this is the USB cable between a Arduino and PC or Raspberry Pi. For a Udoo this is hardwired. This mechanism is explained in the documentation: https://www.udoo.org/docs-x86/Serial_Libraries/index.html
