I’m trying to acess the UART from the userspace using the following:
Pin 27 UART3_RXD
Pin 28 UART3_TXD
Using the following flow of thought:
root@apalis-imx8-14903975:~# ls -l /dev/apalis-uart*
lrwxrwxrwx 1 root root 6 Jan 26 15:22 /dev/apalis-uart1 -> ttyLP1
lrwxrwxrwx 1 root root 6 Jan 26 15:22 /dev/apalis-uart2 -> ttyLP3
lrwxrwxrwx 1 root root 6 Jan 26 15:22 /dev/apalis-uart3 -> ttyLP0
lrwxrwxrwx 1 root root 6 Jan 26 15:22 /dev/apalis-uart4 -> ttyLP2
root@apalis-imx8-14903975:~# stty -F /dev/ttyLP0 115200
root@apalis-imx8-14903975:~# cat /dev/ttyLP0
However I cannot get any messages from my Teensy 4.0 board 3.3v logic.
Is access to the UART ports available through this method in this reference image?
Thank you,
William