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i typed the text in front of > symbol.
now for sending the entered text i need to press cntrl+Z
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should i keep open the other pins(RTS, CTS,DTR, DCD, DSR) of DB9 connector on modem?????
I am glad that you are making some progress.i solved the problem of hyperterminal and cntrl+Z....
If you use flow control you have to make some additional coding in you mCU firmware.Thank you sir for the suggetion. i am doing the same connection which you suggested.
i just had few queries. why is flow control to be kept on none??????
No. I believe that default value is 1.is it necessary to give an initial command ATV0 (This parameter setting determines the contents of the header and trailer transmitted with result codes and information responses.)?????
are these things necessary??????
unsigned char *command_AT = "AT\r\n";
Yes.I will be using the TX pin of GSM modem and giving it to the RX pin of computer and the RX pin of GSM modem will be given to TX pin of controller. And i will short the GND pin(i.e pin 5) of all the three DB9.I think it will be possible to see the response.
will it work?????
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