pls, i need help. i am currently writing a project using interactive voice response system and i need to interface a gsm modem to a microcontroller using AT commands. anyone with useful info should pls send me help. thanks
how then do you think i should go about it, since it is the microcontroller that will feed the gsm module
How would you go about it if you want your microcontroller to use its serial port to send GSM commands to _you_. No much difference from sending "hello world" messages to you. Then only addition is that "hello world" is one-direction while the GSM module needs two-way communication.
Any sample code you can find that implements a menu system will contain both output and input for the serial port.
Don't invent problems where no problems exists. Instead, concentrate on exactly how you use a terminal program on your PC to send data to the GSM module, and to wait for information back.
You should follow the procedure given earlier: www.8052.com/.../160143