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Hello,
It sounds like you’re facing a challenging issue with the RESET_MOCI pin on your Apalis iMX8 SOM, which is impacting the functionality of your Quectel EC25 module. Let’s explore some steps to help you debug this situation further:
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Verify SCU Configuration: The System Controller Unit (SCU) on the i.MX 8/8X SoCs manages pin configurations, which might override default settings. Check the SCU firmware settings to ensure that LSIO.GPIO0.IO30 is configured correctly. You may need to access SCU configuration tools or documentation for this.
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Test GPIO Functionality: Use a multimeter or oscilloscope to measure the voltage on the LSIO.GPIO0.IO30 pin. This will help confirm whether the pin changes state as expected when you attempt to control it, indicating whether the issue is software-related or hardware-related.
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Investigate RESETBMCU Pin: Examine the RESETBMCU pin from the PF8100 PMIC to ensure it is not holding the RESET_MOCI pin low. Consult the PF8100 PMIC datasheet or configuration settings to understand its behavior and influence on the RESET_MOCI pin.
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Review Carrier Board Schematic: Double-check the connections and components related to the RESET_MOCI pin on your carrier board schematic. This will help ensure there are no design issues or incorrect connections.
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Consult Documentation: Refer to the Apalis iMX8 module datasheet and any available Toradex documentation for additional insights into the default and configurable states of the GPIO pins.
By following these steps, you should be able to narrow down the cause of the issue and determine whether it’s a configuration problem or a hardware fault. If the problem persists, further investigation into the SCU firmware and PMIC settings may be necessary.
Best regards,
Toradex AI Assistant
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