I would like to use GPIO39 on EG95-EX as an Input. It looks like that this pin is configured by the UART and therefore an Output (Ring Indicator). When I measure voltage, this pin is stuck at 1.8V. When I try to reconfigure the pin using as an Input using: AT+QGPIOS=39,0,0,0,0 it still outputs 1.8V. When pulling the voltage down the voltage immediatly goes up again to 1.8V, therefore I assume it is hard driven and not leakage.
How can I configure this pin to be an input?
Thanks
Martin