![]() ![]() This post is intended to help beginners interfacing SIM800 GSM Modem. Data from a serial port to the GSM network. Then it can be called for both separate triggerings switch and sms request.The GSM library is included with. Try the below code, here the code to send SMS is defined as a function with name sendsms(). GsmSerial.println("IT'S AN EMERGENCY, NEED HELP. GsmSerial.println("AT CMGS = \" 91xxxxxxxxxx\"\r") If (digitalRead(buttonPin) = HIGH
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