I am using the Colibri iMX7 SoM with the Aster Carrier board with Win CE7.
From my application I would l like to send messages out that would help in diagnostics and debugging.
The USB Slave and Ethernet ports of my device are engaged for some other communication. So I am left with the serial ports.
Which serial port from among the multiple available on the SoM should I use for these debug messages.
In addition there would be another firmware running on the Cortex M4 and I would also want similar messages coming out and going in to the Cortex M4 firmware.