Subject:
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Uploading datalog - some confusion?
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Fri, 13 Jul 2001 18:47:08 GMT
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Viewed:
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1640 times
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I have been playing around with NQC (RCX v2, MacNQC) and generally everthing
has been straightforward (certainly more so than Robolab...) but I am having
problems with datalog uploads.
I can upload the datalog using NQC no problem. I then included the
"UploadDatalog(1, 20);" command in a program and nothing happened. I am
guessing this doesn't work? I assumed that the RCX would cause the IR tower
to wake up and data would start to flow in through the serial port where I
would have to do something with it.
I started poking around in the NQC source to try to figure out how I could
initiate the upload in the code I am working with (4D as it happens). What
I can determine is:
Baud rate = 2400
parity = odd
hshake = DTR
Stop bits = ?
NQC seems to send a ping first (0x10) and gets some sort of reply then sends
a (0xa4) followed by the low and high byte of the start and stop short ints.
This confused me because this is what the disassembled code that I
downloaded looked like (ie sending the 0xa4).
Once I get the data it looks pretty straighforward to reasemble the ints...
So what am I missing?
TIA,
Larry
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