Subject:
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Re: Interrupt for serial data
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 16 Feb 1998 19:04:02 GMT
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Original-From:
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(terricherr@aol)IHateSpam(.com)
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Viewed:
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1401 times
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I have been using very successfully for two months now, the code in the
attached zip file. It has Interrupt Driven Transmit & Receive functions, both
are buffered.
I found the code easy to adapt for my specific task. Messages can be
"Canned", Fixed, or variable length.
*** I found this on the Net somewhere, but cant remember now. All rights
belong to the originator - Thank You !!
The second thing I noticed in your mail was looking for ways to control Data
flow to keep your PC & HB syncronized. There is a solution built into the
attached software as well !! Its commonly known as "XON / XOFF Flow
control". If the software receives $11 in the buffer it turns ON the
transmitter , allowing data to be sent - this is XON. Alternatively, if the
software receives $13 in the buffer it turns OFF the transmitter , stopping
data transmission- this is XOFF.
A similar technique could be used at the PC end for controlling data
from the PC.
Many Regards,
Terry Howsham
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