i am doing a project with gsm modem interfaced with ARM. and i my interface of gsm and muc is not working. i am using simcom gsm.and LPC2129/2368 microcontroller i am getting the GSM data through UART1 interrupt. please give me the connection details i.e. RS232 between the two and the UART1 settings
I HAVE CHECKED THE CONNECTION BETWEEN BOTH microcontroller & GSM module. the modem is working properly with the hyper terminal. In my code i get the input from GSM modem via UART1 interrupt. I tested the code by sending & receiving messages in both direction(two & fro) hyper terminal/Hercules to the microcontroller i am able to send messages from micro controller to mobile via GSM modem.
So it's working now?
Well done!
No, there is no communication taking place from gsm modem to microcontroller via TX(modem)to RX(microcontroller)through UART1 interrupt
So why did you say that you are able to send messages?!
"TX (modem)to RX (microcontroller)"
Read the modem datasheet again very carefully - pay particular attention to the directions of all signals.
Assume nothing - read carefully.
Also try searching this forum for "DTE" and "DCE"...
Can you please explain how to send message to a mobile phone by interfacing a gsm to a micro controller and programming the micro controller.
This is a very, very, very common task - so there is really no point in repeating the explanation yet again.
So-called "Search Engines" are very powerful tools for finding stuff on the Internet; eg,
www.lmgtfy.com
And here are some general tips on interfacing: www.8052.com/.../160143
interfacing is done through UART controller by setting its baudrate to the GSM baud rate. and give the corresponding GSM send command from the micro controller + the number and message as we do in PC .