UART1 on breakout board where is mapped on linux side?

Official Hardware Portenta Family Portenta X8
1

Dear,

after updating to last version 674, I was in 399, I don't see anymore ttymxc1 where UART1 should be. I cannot find a way to read UART1 can you help me on this matter?

Thank you

2

I got version 646 but changed to 387, simply saying I do not have a clue as to what you are asking. Post an annotated schematic, links to technical information on each of the parts and your code. Use the forum guidelines and code tags. What is your question, remember my eyes are old and cannot see your project.

3

I will try to be more precise. In the sketch I use Serial1.println(“to print a comment or debug result”)
Serial1 is corresponding to UART0 pins on breakout board. Starting from this output on UART0 i can redirect the message received on UART0 to UART1 crossing TX(UART0)——RX(UART1) and RX(UART0)———TX(UART1) in this way I can see the message under the Linux shell by cat /dev/ttymxc1 command. This worked on v399 but after upgrade ttymxc1 doesn’t appear anymore under dev.

4

Hello!

Thank you for reporting this issue.

We are aware now of the problem which is that with 674 we no longer default to breakout device tree configuration.

You can try to configure the overlays from userspace:

fw_setenv carrier_custom 1
fw_setenv is_on_carrier yes
fw_setenv carrier_name breakout
fw_setenv overlays 'ov_carrier_breakout_gpio \
  ov_carrier_breakout_i2s \
  ov_carrier_breakout_sai \
  ov_carrier_breakout_pdm \
  ov_carrier_breakout_pwm \
  ov_carrier_breakout_sdc \
  ov_carrier_breakout_spdif \
  ov_carrier_breakout_spi0 \
  ov_carrier_breakout_spi1 \
  ov_carrier_breakout_uart1 \
  ov_carrier_breakout_uart3 \
  ov_carrier_breakout_usbfs'