8051 – GSM Interfacing

Hi Guys today we will see GSM interfacing with 8051. Before that please take a look at GSM Module Introduction.  And you should know the Serial Communication of 8051. I’ve posted that also. Please go through that (Serial Communication).

GSM interfacing with 8051

Components Required

  • GSM SIM900A module
  • 8051 Development Board

Connection

Connection_gsm-1 8051 - GSM Interfacing

Micro controller’s RX (P3.0) is connected into GSM module’s TX and Micro controller’s RX is Connected into GSM module’s RX pin.

Code

SMS Sending Code

This code is used to send the message to the particular number. You can also download this code from Github.

Calling Code

This code is used to Call to the particular number. You can also download this code from Github.

If you have any doubt please comment below.

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