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Problem in GPIO output | Telit Cinterion IoT Developer Community

May 10, 2016 - 3:25pm, 2933 views


We have a Gemalto EHS6T connected in the following way:

- AREF connected to the +5V output (also tried connecting it to a 3.3V power source)

- GPIO20 connected to GPIO21

- GPIO12 connected to GPIO13

We are running the example program from the CD called GPIO5V_lib with the pins GPIO20 and GPIO21 as output/input or GPIO12 and GPIO13. Anyway, the result is the same: Output says it changes to 0 and 1 and 0 and 1 but the input stays all the time to 0. If we put the input to 5V or ground we see it changes, but whatever the output is, we always get 0.

We even tried doing a factory reset to the Gemalto with no changes from this behaviour.

Can anyone help us so we can set the output to 1 or to 0 and see it in the respective pin of the device?