Hello, I am working with the GSM M95 module. Could I use pin 20 with both DTR and SIM presence functionality? I would like to be able to use both options. On the one hand DTR, to use the SLEEP mode. On the other hand, I find it interesting to be able to detect if a sim is inserted or not. In this case, if we connect as recommended in the hardware recommendations document:
We have pin 20 with a pull-up configuration. Our sim connector says:
Can I control the signal through a microcontroller leaving aside the detection of sim in sleep mode?
I’m probably getting a bit confused, and it’s not possible directly, and I can do the sim detection with a GPIO of the external microcontroller.