• I'm having a similar issue with the rev 1v4 pico. SD Card access stopped working at commit a35b05c4a9f31d13aa8ee9b4bd4ba86c82760c0f for me. It seems to be related to the device type enumeration and the addition of the serial status items:

    EV_SERIAL1_STATUS,
    EV_SERIAL2_STATUS,
    EV_SERIAL3_STATUS,
    EV_SERIAL4_STATUS,
    EV_SERIAL5_STATUS,
    EV_SERIAL6_STATUS,
    EV_SERIAL_STATUS_MAX = EV_SERIAL6_STATUS,

    I moved these down below the SPI devices and it appears to be working. There may be some remaining issues with the EV_DEVICE_MAX value.

    Submitted pull request with a possible fix... or hopefully at least part of the fix.

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