hi
i wanted to know how exactly handshaking signals (RTS and CTS) be included in the program.
we are using a wavecom modem that use AT commands.
we have also included MAX232 for ttl to rs232 conversion.
command to accept call is ATA. i wanted to know whether to trasmit ATA command as a string through Serial port(TXD) or transmit chatracters A,T,A separately or is there some other equivalent code that is being transmitted when using the hyperterminal
Thanks
No, a Null-modem cable is not what you require here:
A so-called "Null-modem" cable is what you need for connecting two DTEs together.
What you need, if you're not going to implement hardware flow control, is to loop-back the modem's CTS output to the modem's RTS input - see:
www.wavecom.com/.../viewtopic.php