I am stuck in one problem ...Please help me to solve it...
Actually i am working on GSM module and i am going to interfaced it with 8051 controller.The hardware part is working well but i am not able to do a serial communication(tx,rx,rts,cts,dtr,dcd) between these two devices.
dear u should check out first wheterh ur GSM is properly working if Yes. then connect it to PC serial port and check it on the Hyperterminal whether it is responding or not.
GSM is working with hyperterminal but i have to integrate it with external controller. for the communication between controller and GSm i need to connect all handshaking signals.but the problem is i am not able to write a code for handshaking signals ...