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Based on the provided context, it appears that pin 184 has specific restrictions when used as a GPIO on the Colibri iMX6ULL, but there is no explicit mention of such restrictions for the Colibri iMX6DL in the datasheet.
However, given that you are experiencing issues with the pin going low unexpectedly on the Colibri iMX6DL, it is possible that there might be some underlying hardware or software behavior affecting this pin.
Here are a few steps you can take to troubleshoot and potentially resolve the issue:
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Check Pin Multiplexing: Ensure that pin 184 is correctly configured as a GPIO in your device tree or board configuration files. Incorrect pin multiplexing can cause unexpected behavior.
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Electrical Characteristics: Verify the electrical characteristics and ensure that there are no conflicts or external factors causing the pin to go low.
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Software Configuration: Double-check your software configuration to ensure that there are no other processes or interrupts that might be affecting the pin state.
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Errata and Known Issues: Review the Colibri iMX6DL errata and known issues documents to see if there are any documented issues related to pin 184.
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Alternative Pin: If the issue persists and you cannot find a resolution, consider using an alternative GPIO pin that does not exhibit this behavior.
Since the datasheet for the Colibri iMX6ULL contains warnings about pin 184, it might be prudent to avoid using this pin if you continue to experience issues, even though the Colibri iMX6DL datasheet does not explicitly mention such restrictions.
If you need further assistance, you can contact Toradex technical support for more detailed guidance specific to your use case.
Please, also check if these links can help you solve your problem: