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AT command for sending sms through code

sayed shadab

Hello

Actually i am doing a computer program in C# to send and receive SMS through gsm mode(serial port)
i am using the below code

port = new SerialPort(cmbport.Text, 115200, Parity.None, 8, StopBits.One);
port.Open();
port.WriteLine("AT\r");

after opening the port the program is halt, it does not execute the api
writeline

if any body have idea please suggest me
waiting your reply
thanks
sadaba lam

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Vulpes14y ago
This article may help:

http://www.codeproject.com/Articles/38705/Send-and-Read-SMS-through-a-GSM-Modem-using-AT-Com
mamta rupareliya14y ago
How to send SMS Using AT Command ASP.NET Application
Sam Hobbs14y ago
That is a very fast baud rate; are you sure the phone can handle 115,000 characters per second?
Vulpes14y ago
I'd try using port.Write("AT\r") rather than port.WriteLine("AT\r") as the latter will send an extra "\r\n" on Windows.