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Serial flow control between Basic Stamp and PC

Discussion in 'Electronic Basics' started by Julia Goolia, Apr 23, 2004.

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  1. Julia Goolia

    Julia Goolia Guest

    Has anyone ever had any luck in getting control flow to work on a
    basic stamp? The Basic Stamp supports RTS/CTS, but I'm not sure how
    to use it. I'm interfacing the serial on my PC via a python library
    called pySerial.

    This is what I have on my Basic Stamp. I'm using NON-INVERTED
    (whatever that means):

    SERIN 16\0, etc...

    So basically I'm assuming that means 16 is used as the input and 0 is
    used as the flow control pin... however, this means its putting out
    the flow control signals over the pins that are plugged into my
    breadboard and not into the serial cable!! Moreover, I probe the
    serial pins using the pySerial library and there no change to the pins
    before and after the call to SERIN.

    I know that in the Basic Stamp documentation it says:

    "All basic stamps has a line receiver on its SIN pin (Rpin = 16)."
    p.277 of

    OK so if I put 16 as Rpin for the SERIN command I can reference one of
    the pins from the serial port (as above), but what about the other
    pins, namely the ones that do flow control?! It seems there is no

    So then I tried SERIN 16\16, using the same pin for the flow control,
    but this doesn't really make sense and doesn't seem to work either.

    Please, has anyone successfully used flow control with their basic
    stamp? How did you do it?

    thanks! juliabean
  2. SB

    SB Guest

    You should join yahoo and post to the basic stamps group there. A very good
    group supported by Parallax techs!

    There's a link off of parallax's website too!
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