thunderboympm
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hello,
i got stuck with my GSM modem, i am doing a project with PIC16F877A and GSM modem (sim300 V7.03)
the problem is, when i am giving "AT\r" to microcontroller GSM modem not responding.
i checked
1. Connected to serial port using com port in my pc, the result is good gsm modem responded with "OK"
2. Connected my board to Serial port using com i got "AT" in my serial terminal "teraterm" and i gave "OK" then the code working perfectly
3. When i combined the two with a connector wire of three pin then the system is not working properly
will you please suggest any remedies or solutions with your experience? and if you can please describe what is the problem actually?
thanks in advance
i got stuck with my GSM modem, i am doing a project with PIC16F877A and GSM modem (sim300 V7.03)
the problem is, when i am giving "AT\r" to microcontroller GSM modem not responding.
i checked
1. Connected to serial port using com port in my pc, the result is good gsm modem responded with "OK"
2. Connected my board to Serial port using com i got "AT" in my serial terminal "teraterm" and i gave "OK" then the code working perfectly
3. When i combined the two with a connector wire of three pin then the system is not working properly
will you please suggest any remedies or solutions with your experience? and if you can please describe what is the problem actually?
thanks in advance