GPIO ground | Telit Cinterion IoT Developer Community
June 24, 2016 - 4:59pm, 1700 views
Is the GPIO ground connected to the ground in the RJ jack internally in the BGS5T? I would like to be sure that they are connected and that I do not need to connect the GPIO to ground as long as the rest of the system connects to the ground used in the RJ for powering the module.
when I was using just GPIO's I didn't need to connect GPIO ground to ground. But when I was using ASC1 I had to connect GPIO ground to the RS232 ground.
They should be connected.