User manual

UDOO Starting manual (beta) Version 0.3
http://www.udoo.org/
14"
3. Internal Connections
3.1. Introduction
UDOO include on the same board an ARM v7 Cortex A9 microprocessor with an
Atmel SAM3X8E microcontroller (same as Arduino Due). They’ re both stand-alone
with different clocks and no shared memory. They both process their tasks
asynchronously without any kind of emulation
These processors only share some communication channels:
● an UART Serial (used on Linux)
● an USB OTG Bus (used on Android)
● all the digital pins of the external Arduino pinout.
UDOO embeds a micro-computer with the most common communication ports
(Ethernet, WiFi, USB, HDMI, SATA, digital and analog input/output) and a
microcontroller with a standard pinout for fast prototyping applications. They both
work connected to the same ports that usually connect an Arduino board with a
standard PC.
3.2. Processors’ Connections
This chapter will describe all the communication channels between the two
processors on UDOO board.
3.2.1. i.MX6 Debug Serial
Freescale i.MX6 has a dedicated serial port for debugging, which is accessible
through an USB-to-RS-232 bridge on micro-USB connector CN6.
The J18jumper switches USB connection coming from CN6 to the iMX6 debug serial
port, instead of SAM3X8E programming port. It gives accessto Linux console while