Verdin iMX8M Mini M4 debug tty

Hi,

I am new to iMX processors.
SOM: Verdin iMX8M Mini with 2GB DDR, 16GB eMMC, WiFi/Bluetooth.
Carrier Board: Verdin Development Board v1.1

Trying out the demo_app - hello_world.bin as per this article.

https://developer.toradex.com/knowledge-base/freertos-on-the-cortex-m4-of-a-verdin-imx8m-mini

  1. Which is M4 debug tty? /dev/ttyUSB3 is for u-boot/linux. That one works. Which one to use for M4? Tried /dev/ttyUSB2. I am not able to see the demo output “Hello world!” on this.

  2. Regarding ./build_all.sh - The article says “This will build both the debug and release versions of the application for all possible targets (DDR, FLASH and RAM).”. For the demo, which one to use.

Thanks in advance for your help.

Hi @spsarathy1 ,
As per our email communication, You were able to run the freeRTOS hello_world demo and also got the debug output, right?

Yes Sahil.
/dev/ttyUSB2 is the debug console for M4. The freertos_examples work.
Thanks.