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Sending a character to the serial port?

Discussion in 'Electronic Basics' started by sunny, Sep 8, 2003.

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  1. sunny

    sunny Guest

    I am trying to use the hyper terminal program to send a character
    from the keyboard to the serial port com1 on my pc. I try to press
    any key, but nothing happens on the screen, is it sending the
    characters do you think? Do I need to select something from the
    menu before I start pressing the keyboard ?
  2. CFoley1064

    CFoley1064 Guest

    I am trying to use the hyper terminal program to send a character
    Properties > Settings > ASCII Setup > Turn On "Echo typed characters locally"

    Good luck.
  3. The characters are probably being transmitted. You need to echo the
    characters to the screen. Otherwise, they will not show up.


    Chip Shults
    My robotics, space and CGI web page -
  4. sunny

    sunny Guest

    Thanks, was very useful !!!
  5. Di'ego

    Di'ego Guest


    Goto the properties for the comm port and make sure 'Flow Control' is set to
    NONE. Also, make sure you are connected, it should say on the bottom of the
    screen. If you want to test if anything is coming out then just connect the
    TX pin to the RX pin. To do this just put a piece of wire from pin 2 to pin
    3 (thats assuming your serial port is of the 9 pin type). Now when you
    press a key the value will go out the TX pin and then back into the RX pin
    and then you should see characters appear on the screen.

    If you have 2 serial ports then you can make the following connector:

    Port 1 Port 2
    Pin 2 --------- Pin 3
    Pin 3 --------- Pin 2
    Pin 5 --------- Pin 5

    Now you can send data from one port to another. Make sure both ports have
    the same settings in hyperterminal.

    If you need anymore info just say,
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