Access UART0, 2 IMx8x from linux (Colibri evaluation board)

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Based on the context provided, it seems like you are encountering an issue with sending data over UART using the echo command. Here are a few things you might want to check or try:

  1. Command Syntax: Ensure that you are using the correct syntax for the echo command. For example, try using echo -n "message" > /dev/ttyLP0 to avoid sending a newline character, which can sometimes disrupt communication.

  2. UART Settings: Double-check that the UART settings (such as baud rate, parity, and stop bits) are correctly configured and match between the sending and receiving devices. Mismatched settings can lead to communication failures.

  3. Alternative Methods: If the issue persists, consider using other methods or tools for sending data. Tools like printf, minicom, or screen might provide more control and feedback for debugging the issue.

If these suggestions do not resolve the issue, there might be other underlying problems not covered in the provided context.

Please, also check if these links can help you solve your problem:

How to use UART 1 in Colibri IMX8DX WB with viola carrier board?.