I2C failing with “Operation not allowed”

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  1. I2C failing with “Operation not allowed”

    Hi

    I have a problem with the I2C commands on a TELIT GE910-GNSS. Any read command fails. For example:

    AT+CMEE=2
    OK
    AT#I2CRD=9,8,31,28,1
    +CME ERROR: operation not allowed

    This is on a vanille GE910-GNSS module with new firmware.

    AT+CGMR
    13.00.107

    Please assist

    Regards Henro