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)
my serial monitor never returns commands (I type AT, it's not shown on serial monitor)
On the serial monitor, we usually wait to get a module response to our AT commands.
If you want to send manual AT Command, find a tutorial on how to send manual AT Command.