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Hello!
It sounds like you’re encountering some challenges with UART communication on your Colibri iMX6DL running Torizon 6.7.0. Let’s go through some steps to help resolve this issue:
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Device Tree Configuration: Ensure that the device tree is correctly set up to enable UART_C. This involves verifying that the correct pin multiplexing is specified and that the UART interface is enabled. You might need to modify the device tree to ensure UART_C is not disabled or misconfigured.
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Hardware Handshaking: Check if hardware handshaking is enabled by default. If your application doesn’t require it, you can disable it either in your application settings or through the device tree configuration.
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User Permissions: Confirm that the user account has the necessary permissions to access
/dev/colibri-uartc. Typically, being a member of thedialoutgroup is sufficient. However, adding the user to thettygroup can ensure full access. -
Testing with Basic Commands: After verifying the above configurations, test the UART communication using basic commands like
echoandcatto ensure data can be sent and received. This will help confirm that the UART is functioning correctly at a basic level. -
Application Code: If you’re using C or another programming language, ensure your code correctly opens the device file and sets the appropriate parameters (such as baud rate and parity). Double-check that file descriptors are handled correctly and that write operations are properly executed.
By following these steps, you should be able to diagnose and fix the issue with UART_C on your Torizon setup. If problems persist, consider reviewing the specific configurations and code used to interact with the UART to identify any overlooked details.
Best regards,
Toradex AI Assistant
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