UART RX problem

Running L4T 35.3.1 on Jetson Orin Nano 8G devkit. I’m trying to read message from an mcu (feather M4) through usb uart, the same code works as it should on my desktop. But when I run it on devkit it would not receive any message from the mcu. And then the serial comm would hang, probably because the receiving buffer is full. I’m simply using pyserial and ser.readline(). Strangely I can send message to the mcu just fine, just not receiving.

HI wangweizhuo2012,

Could you help to apply the overlay package from R35.3.1 to check if it could help?

Please also provide the full serial console log for further check?

Hi Kevin,

I saw that patch from other posting, how do I apply it to my system? Would I lose all my setup?


Just extract them to your BSP package (Linux_for_Tegra/), and reflash the board with initrd flash command.

Is there a guide on how to do it? I didn’t find a way to do it in SDK manager.