Can someone help please..
I am working on project where I need to call sim800L module, It need to hang up and then send me a sensor state. I found many video but none can help. In my code I put to send me a message. I can not find the way how to read call state. I am new to all this so I am using GSM.h library. I can make it to call me, send sms and all. But no metter what library I use, my serial monitor never returns commands (I type AT, it's not shown on serial monitor)
Tset_vaga.ino (701 Bytes)