F&S Support Forum

UART testing

If you wish to test the different UARTs you can do this by using NXPs commandline UART-read-write tool. Every UART has it's own FriendlyName which has been specified in the ACPI, more about this here. This tool allows you to list these…

I can confirm that this patch works for us. Thanks.

Hello,

this is normally not an issue. You have a requirement which needs configuration of the uart port. The drivers offers the device tree settings to configure this. Please see driver documentation for uart node. In general you may have better…

Hello,

could you please test the attached Linux kernel patch for fsimx6-2024.04?

It should fix the issue without fsl,rx_fifo_trig = <1>; needed.

Your F&S Support Team

Hello,

this is normally not an issue. You have a requirement which needs configuration of the uart port. The drivers offers the device tree settings to configure this. Please see driver documentation for uart node. In general you may have better…

Hello,
(Code, 1 line)

should still work, regarding the code.

We will test this on the board.

Your F&S Support Team

It is not possible to read data from serial port when input buffer contains exactly 9 bytes. The following code demonstrates the issue:
(Code, 8 lines)

The number 9 is related to the length of the rx_fifo_trig in drivers/tty/serial/imx.c. For kernel…

I can confirm that this is still an issue in 5.15.148 and the mentioned work-around no longer works.

F+S: can you provide more information about this issue and how to fix it?

Hello,

for Vybrid are different NBoot versions available. Depending on the version baudrate may be 115.2 kBaud or 38.4kBaud.
Hope this resolves your problem.

Hello!

I got a new starter kit and a NetDCUA5 board, which I connected to the starter kit. I powered the setup and, when I connect to the serial (using 115200 8N1, no flow control), both via PuTTy and via TeraTerm, it only displays what seems to be…