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problem with "local echo" in hyper terminal?

siva cherukuri

I am using hypertrm for communicate with gsm modem,my problem is i am not using "local echo",but characters are displayed on hypertrm when i used key board storks,and it was not shows the responses from the modem,
please tell me what is the problem?

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  • 0 in reply to siva cherukuri

    And why do you think a PIC microcontroller or an Intel PC-processor would matter?

    Do you think the terminal program run on the PC would behave differently if you used an Atmel 8051 microcontroller, or if the PC had an AMD processor?

    Local echo in a terminal program is obviously something that you control by looking through the options supported by the terminal program.

    And the terminal program does not care what external hardware you have. A PIC controller. Another PC. A GSM modem. All the same to the terminal program.

  • 0 in reply to ImPer Westermark

    I just wanted to know if this is something regarding to Keil tools :-)

  • 0 in reply to Thorsten de Buhr

    Is Hyperterminal a Keil tool?

    Do Keil make any tools for PC processors?

    Do Keil make any tools for PIC processors?

    What does ARM have to do with it?

  • 0 in reply to Thorsten de Buhr

    It wasn't a comment to your comment, but a comment to the OP :)

    Anyway, if the terminal program can't receive any characters, then the normal route to check is:
    - is there a MAX232 or similar level converter between the microcontroller and the RS232 serial port.
    - are all wires connected correctly, so rx/tx hasn't been switched, or the receiver and transmitter halves of the level converter switched.
    - let the microcontroller send out data, and verify that it sends anything.
    - verify that the bit lengths of the data sent by the microcontroller has the correct baudrate.
    - verify that this data reaches the PC (and with the correct signal levels)
    - verify that the PC terminal program has the correct communication settings (including turning off any hardware handshake, unless the port is expected to use hw handshake)

  • 0 in reply to ImPer Westermark

    yes thanks i got the problem ,its nothing but wired problem