Subject:
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Re: using nqc for first time
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 23 Jun 1999 02:08:34 GMT
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Viewed:
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1052 times
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The traces confirm a couple of things:
1) Normally the IR tower will "echo" all data that it sends (just a side
effect of the LED blasting out the light and the phototransistor picking
it up). In your case there are a significant amount of bit errors in this
echo. This alone isn't anything to worry about since someimes you'll get
bit errors in the echo if the recieve circuit doesn't track the signal
strength close enough. (the LED is so close that it "overdrives" the
recieve circuit, this leading to some potential bit errors).
2) You are getting lots of retries on long packets. From this fact alone
we can't tell if its a Tx or Rx problem, but even when things download
successfully, it takes several retries at the packet level to make it
work.
3) The "corrupted program" problem would indicate to me that the Tx side
is getting corrupted. If the Rx side only was hosed, then you'd probably
still see lots of failures because the Mac wouldn't see the ACKs from the
RCX. However, once it saw an ACK, you could be sure that valid data was
sent to the RCX. Since the program is obviously being corrupted, I
suspect that Tx is getting messed up. The checksum is a pretty simple
one, so its still possible that a few bit errors could cancel one-another
out to pass the checksum even though the packet itself was damaged.
Have you tried this with the modem port (instead of the printer port)? It
shouldn't make a difference, but at this point almost anything is worth
trying.
If I recall correctly, you also used the Mindstorms software under VPC.
Was this with the same cables as those used for nqc?
All I can suggest is to check everything out - make sure your cable is
good, etc. If you feel like opening the IR tower, then check out the DB-9
connector and make sure its well soldered to the PC board. Make sure that
the ground connection is good. A floating ground would definitely hose
things up. You may also want to try to eliminate any environmental
sources of interference (sunlight, etc).
You can try cranking up the number of retires that NQC uses (e.g. -r 10)
but this probably won't help much if its really a Tx problem.
Dave
In article <376DCF07.13A84B5C@earthlink.net>, kevcarl@earthlink.net wrote:
> Dave Baum wrote:
> >
> > > But the above scenario always happens. Always fails on the first
> > > download try, succeeds (seeminly) on the second, and then doesn't run
> > > the program properly for some reason. I'm able to repeat this every
> > > time. I'm stumped. Any suggestions? Thanks in advance,
> >
> > Very strange. I've heard of some problems with *long* programs failing to
> > load, but never with something as short as test.nqc. Try the following
> > command and e-mail me the results (dbaum@enteract.com)
> >
> > nqc -d -l -v test.nqc
> >
> > (this will print a code listing, then download in "verbose" mode).
> >
> > Hopefully you'll have one run that fails, then a second that works. I can
> > then compare the verbose traces to see what the differences are. I'll
> > also be able to validate the actualy bytecodes being sent, etc. If it
> > comes down to a simple communication reliability problem, there are some
> > options we can use to increase the backoff times and/or retry counts.
>
> Cool. Thanks for checking this out. I did get one failure, and then one
> success, and here are the outputs:
>
> nqc -d -l -v test.nqc
>
> *** Task 0 = main
> 000 InType 0, Switch 32 00 01
> 003 InMode 0, Boolean 42 00 20
> 006 OutDir A, Fwd e1 81
> 008 OutMode A, On 21 81
> 010 OutPwr A, 7 13 01 02 07
> 014 Test 1 != Input(0), 14 95 82 09 01 00 00 fa ff
> 022 PlaySound 0 51 00
> 024 OutMode A, Off 21 41
>
> Downloading Program:Tx: 55 ff 00 10 ef 10 ef
> Rx: 55 ff 00 10 ef
> Tx: 55 ff 00 10 ef 10 ef
> Rx: 14 fe 00 10 ef 10 ee 55 ff 00 ef 10 ef 10
> Tx: 55 ff 00 50 af 50 af
> Rx: 55 fe 00 10 af 10 af 55 ff 00 af 50 af 50
> Tx: 55 ff 00 40 bf 40 bf
> Rx: 15 fe 00 40 3f 00 bf 55 ff 00 bf 40 bf 40
> Tx: 55 ff 00 70 8f 70 8f
> Rx: 55 ff 00 70 8f 70 8e 55 ff 00 8f 70 8f 70
> Tx: 55 ff 00 25 da 00 ff 00 ff 00 ff 1a e5 00 ff 3f c0
> Rx: 51 ff 00 25 da 00 fe 00 ff 00 ff 1a e5 00 fe 3f 80 55 ff 00 da 25 00
> ff da 25
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 4d b2 01 fe 00 ff 04 e2 00 ff 32 cd 00 ff 00 fe 42 bd 00 ff
> 20 df 80 7e 21 de 81 7e 13 cc 01 fe 02 f8 95 6a 82 7d 09 f6 01 fe 00 ff
> 00 ff 97 08 10 ef
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 49 b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bc 00 ff
> 20 9f e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 f9 95 62 82 79 09 e6 01 fe
> 00 ff 00 ff 97 08 10 ee
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 4c b2 01 fe 00 ff 04 eb 00 fe 32 c9 00 ff 00 fe 42 bd 00 ff
> 20 de e1 1e 81 7e 20 de 80 7e 13 ec 02 f8 85 6a 82 7d 09 f6 01 fe 00 ff
> 00 fe d6 08 10 ef
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 05 ff 00 4d 32 01 fe 00 ff 14 ea 00 ff 32 cc 00 ff 01 fe 42 bd 00 fe
> 20 9f e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 f8 85 6a 82 7d 09 f6 01 fe
> 00 ff 00 ff d7 28 10 ef
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 54 fe 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 01 fe 42 bc 00 ff 20 df
> e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 07 f8 91 6a 82 7d 09 f6 01 fe 00 ff
> 00 ff d7 28 10 ef
> error
> No reply from RCX
> nqc -d -l -v test.nqc
>
> *** Task 0 = main
> 000 InType 0, Switch 32 00 01
> 003 InMode 0, Boolean 42 00 20
> 006 OutDir A, Fwd e1 81
> 008 OutMode A, On 21 81
> 010 OutPwr A, 7 13 01 02 07
> 014 Test 1 != Input(0), 14 95 82 09 01 00 00 fa ff
> 022 PlaySound 0 51 00
> 024 OutMode A, Off 21 41
>
> Downloading Program:Tx: 55 ff 00 10 ef 10 ef
> Rx: 15 fe 00 10 ef 10 ef 55 ff 00 ef 10 ef 10
> Tx: 55 ff 00 50 af 50 af
> Rx: 51 ff 00 50 af 50 af 55 ff 00 af 50 af 50
> Tx: 55 ff 00 40 bf 40 bf
> Rx: 55 ff 00 40 3f 40 bf 55 ff 00 bf 40 bf 40
> Tx: 55 ff 00 70 8f 70 8f
> Rx: 00 ff 00 70 8f 70 8f 55 ff 00 8f 70 8f 70
> Tx: 55 ff 00 25 da 00 ff 00 ff 00 ff 1a e5 00 ff 3f c0
> Rx: 55 ff 00 25 da 00 ff 00 ff 00 ff 1a e5 00 ff 3f c0 55 ff 00 da 25 00
> ff da 25
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 de e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 fe c6 28 10 ee 55 ff 00 b2 4d 00 ff b2 4d
> .Tx: 55 ff 00 45 ba 00 ff 00 ff 06 f9 00 ff fa 05 ff 00 51 ae 00 ff 21
> de 41 be ac 53 a3 5c
> Rx: 54 ff 00 44 3a 00 ff 00 fe 06 f9 00 ff fa 04 ff 00 51 ae 00 fe 21 de
> 41 be ac 53 a2 1c 55 ff 00 ba 45 00 ff ba 45
> .Tx: 55 ff 00 51 ae 05 fa 56 a9
> Rx: 55 ff 00 51 8e 05 fa 56 a9 55 ff 00 ae 51 ae 51
> complete
> Tx: 55 ff 00 30 cf 30 cf
> Rx: 55 ff 00 30 cf 30 cf 55 ff 00 cf 30 b4 4b 21 de a4 5b
> Battery Level = 8.6 V
>
>
> But this time, after this second, successful download, the program
> worked just as it should. Before, it would just turn on the motor and
> hang with the motor active. The fact that I really haven't changed
> anything between these two attempts seems to suggest (I'm guessing -
> tell me if you agree) that maybe we have an intermittent cable or IR
> comm problem. Could it be the cable? I have the IR tower connected to
> the male-male DB9 cable that came with Mindstorms, which is connected to
> the DB9-to-DB25 adapter that came with Mindstorms, which is connected to
> a DB25-to-din8 Mac serial cable (old modem cable). That is plugged in to
> the printer port. ( I issue set -e RCX_PORT b to talk to this port -- is
> this correct?)
>
> Okay. I tried this whole sequence a second time, and got a different
> result this time. This time it took three times to download completely,
> and the program misbehaves after downloading. I hit run, the little man
> runs for a while, then stops. The motor is still running, but pressing
> the touch sensor does nothing to stop the motor, even though I'm sure
> the sensor is registering, because I see the dot appear under the sensor
> "1" area of the led. I have to shut off the RCX to get the motor to stop
> running. Here's the output from that session:
>
>
> nqc -d -l -v test.nqc
>
> *** Task 0 = main
> 000 InType 0, Switch 32 00 01
> 003 InMode 0, Boolean 42 00 20
> 006 OutDir A, Fwd e1 81
> 008 OutMode A, On 21 81
> 010 OutPwr A, 7 13 01 02 07
> 014 Test 1 != Input(0), 14 95 82 09 01 00 00 fa ff
> 022 PlaySound 0 51 00
> 024 OutMode A, Off 21 41
>
> Downloading Program:Tx: 55 ff 00 10 ef 10 ef
> Rx: 55 ff 00 10 cf 10 ee 55 ff 00 ef 10 ef 10
> Tx: 55 ff 00 50 af 50 af
> Rx: 14 ff 00 10 0e 50 af 55 ff 00 af 50 af 50
> Tx: 55 ff 00 40 bf 40 bf
> Rx: 55 ff 00 00 be 00 bf 55 ff 00 bf 40 bf 40
> Tx: 55 ff 00 70 8f 70 8f
> Rx: 54 ff 00 70 8f 70 8f 55 ff 00 8f 70 8f 70
> Tx: 55 ff 00 25 da 00 ff 00 ff 00 ff 1a e5 00 ff 3f c0
> Rx: 45 ff 00 25 da 00 ff 00 fe 00 ff 12 e5 00 ff 3f c0 55 ff 00 da 25 00
> ff da 25
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 4d b2 00 fe 14 eb 00 ff 32 cd 00 ff 00 fe 42 bd 00 ff 20 df
> e1 1e 81 7e 21 de 81 7e 12 ec 01 fd 07 f8 91 6a 82 7d 09 f6 01 ff 00 ff
> d7 28 10 ee
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 54 ff 00 4d 32 01 fe 00 fe 14 e3 00 ff 32 c9 00 ff 01 fe 42 b9 00 fe
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 02 fd 07 f8 91 6a 82 7d 09 f6 01 fe
> 00 fe 00 ff 86 28 10 ee
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 54 fe 00 49 32 01 fe 14 ea 00 ff 32 cd 00 ff 01 bc 00 ff 20 9f e1 1e
> 81 7e 21 de 81 7e 13 ec 02 fd 07 f8 95 62 82 79 08 f6 01 fe 00 ff d7 28
> 10 ef
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 54 ff 00 4c 32 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 fe
> 20 df e1 1e 81 7e 21 de 80 7e 13 ec 01 fe 02 fd 00 6a 82 7d 09 f6 01 ff
> 00 ff c7 28 10 ef
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 4c b2 01 fe 00 fe 14 eb 00 ff 32 cd 00 ff 00 fe 42 bd 00 fe
> 20 9f e1 1e 81 7e 21 de 81 7e 12 ec 01 fe 02 f9 07 f8 95 6a 82 7d 09 f6
> 01 ff 00 ff d7 28 10 ef
> error
> No reply from RCX
> nqc -d -l -v test.nqc
>
> *** Task 0 = main
> 000 InType 0, Switch 32 00 01
> 003 InMode 0, Boolean 42 00 20
> 006 OutDir A, Fwd e1 81
> 008 OutMode A, On 21 81
> 010 OutPwr A, 7 13 01 02 07
> 014 Test 1 != Input(0), 14 95 82 09 01 00 00 fa ff
> 022 PlaySound 0 51 00
> 024 OutMode A, Off 21 41
>
> Downloading Program:Tx: 55 ff 00 10 ef 10 ef
> Rx: 15 ff 00 10 ef 10 cf 55 ff 00 ef 10 ef 10
> Tx: 55 ff 00 50 af 50 af
> Rx: 54 ff 00 50 af 50 ae 55 ff 00 af 50 af 50
> Tx: 55 ff 00 40 bf 40 bf
> Rx: 55 ff 00 40 be
> Tx: 55 ff 00 40 bf 40 bf
> Rx: 55 ff 00 40 3f 40 be 55 ff 00 bf 40 bf 40
> Tx: 55 ff 00 70 8f 70 8f
> Rx: 55 fe 00 70 8f 70 8f 55 ff 00 8f 70 8f 70
> Tx: 55 ff 00 25 da 00 ff 00 ff 00 ff 1a e5 00 ff 3f c0
> Rx: 05 ff 00 25 da 00 ff 00 ff 1a e5 00 ff 3f c0
> Tx: 55 ff 00 25 da 00 ff 00 ff 00 ff 1a e5 00 ff 3f c0
> Rx: 55 fe 00 25 da 00 fe 00 fe 00 ff 12 e5 00 ff 3f c0 55 ff 00 da 25 00
> ff da 25
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 54 ff 00 4d 32 00 fe 00 fe 14 e3 00 ff 32 cc 01 bd 00 ff 20 de e1 1e
> 81 7e 21 9e 81 7e 13 ec 00 fe 02 fd 07 f8 91 4a 82 79 09 e6 01 fe 00 fe
> 00 ff 87 28 10 ef
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 49 b2 01 ff 14 cb 00 ff 32 cd 00 fe 01 bd 00 fe 20 df e1 1e
> 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 94 6a 82 7d 09 e6 01 fe 00 ff
> 00 ff d7 28 10 ee
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 51 fe 00 4d b2 01 fe 00 fe 14 ea 00 ff 32 cd 00 ff 00 fe 42 b9 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 cc 01 fe 02 f8 94 6a 82 7d 09 f6 01 fe
> 00 fe 00 ff d7 28 10 ef
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 4d 32 01 fe 00 ff 04 eb 00 ff 32 cc 00 ff 01 3c 00 ff 20 de
> e0 1e 81 7e 21 de 80 7e 13 ec 01 fe 02 f9 91 42 82 7d 08 e6 00 fe 00 ff
> 00 ff d6 28 10 ef
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 4d b2 01 fe 00 ff 14 ea 00 ff 32 cd 00 ff 00 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 20 9e 81 7e 12 cc 01 fe 02 fc 06 f8 82 7d 09 f6 01 fe
> 00 fe d7 28 10 ef
> error
> No reply from RCX
> nqc -d -l -v test.nqc
>
> *** Task 0 = main
> 000 InType 0, Switch 32 00 01
> 003 InMode 0, Boolean 42 00 20
> 006 OutDir A, Fwd e1 81
> 008 OutMode A, On 21 81
> 010 OutPwr A, 7 13 01 02 07
> 014 Test 1 != Input(0), 14 95 82 09 01 00 00 fa ff
> 022 PlaySound 0 51 00
> 024 OutMode A, Off 21 41
>
> Downloading Program:Tx: 55 ff 00 10 ef 10 ef
> Rx: 55 fe 00 10 ee 10 ce 55 ff 00 ef 10 ef 10
> Tx: 55 ff 00 50 af 50 af
> Rx: 55 ff 00 50 0e 50 af 55 ff 00 af 50 af 50
> Tx: 55 ff 00 40 bf 40 bf
> Rx: 51 ff 00 40 3f 40 bf 55 ff 00 bf 40 bf 40
> Tx: 55 ff 00 70 8f 70 8f
> Rx: 44 ff 00 70 8f 70 8e 55 ff 00 8f 70 8f 70
> Tx: 55 ff 00 25 da 00 ff 00 ff 00 ff 1a e5 00 ff 3f c0
> Rx: 51 ff 00 21 9a 00 ff 00 ff 00 ff 12 e5 00 fe 3f 80 55 ff 00 da 25 00
> ff da 25
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 c9 00 ff 01 fe 42 bd 00 ff
> 20 9f e1 1e 81 7e 21 9e 80 7e 13 ec 00 fe 02 fd 00 6a 82 7d 09 f6 01 fe
> 00 ff 00 ff 87 28 10 ee
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 54 fe 00 48 b2 00 fe 00 ff 14 c3 00 ff 32 cd 00 ff 01 b8 00 ff 20 9f
> 81 7e 21 9e 81 7e 12 ec 01 fe 02 f8 91 6a 82 7d 08 f6 01 fe 00 ff d7 28
> 10 ef
> Tx: 55 ff 00 4d b2 01 fe 00 ff 14 eb 00 ff 32 cd 00 ff 01 fe 42 bd 00 ff
> 20 df e1 1e 81 7e 21 de 81 7e 13 ec 01 fe 02 fd 07 f8 95 6a 82 7d 09 f6
> 01 fe 00 ff 00 ff d7 28 10 ef
> Rx: 05 ff 00 48 32 01 fe 00 ff 14 eb 00 ff 32 c9 00 ff 00 fe 42 bd 00 ff
> 20 9e e1 1e 81 7e 21 9e 81 7e 13 ec 01 fe 02 fc 07 f8 94 4a 82 7c 09 f6
> 01 fe 00 ff 00 ff d7 28 10 cf 55 ff 00 b2 4d 00 ff b2 4d
> .Tx: 55 ff 00 45 ba 00 ff 00 ff 06 f9 00 ff fa 05 ff 00 51 ae 00 ff 21
> de 41 be ac 53 a3 5c
> Rx: 45 ff 00 41 ba 00 ff 00 fe 06 f9 00 ff fa 05 ff 00 51 8e 21 de 41 be
> ac 53 a3 5c
> Tx: 55 ff 00 45 ba 00 ff 00 ff 06 f9 00 ff fa 05 ff 00 51 ae 00 ff 21 de
> 41 be ac 53 a3 5c
> Rx: 55 ff 00 41 ba 00 ff 06 f9 00 ff fa 01 ff 00 51 ae 00 ff 21 9e 40 be
> ac 53 a3 5c
> Tx: 55 ff 00 45 ba 00 ff 00 ff 06 f9 00 ff fa 05 ff 00 51 ae 00 ff 21 de
> 41 be ac 53 a3 5c
> Rx: 54 ff 00 45 3a 00 ff 00 ff 06 f9 00 ff fa 05 ff 00 51 ae 00 ff 21 de
> 41 3e ac 53 23 5c 55 ff 00 ba 45 00 ff ba 45
> .Tx: 55 ff 00 51 ae 05 fa 56 a9
> Rx: 10 ff 00 51 ae 01 fa 56 88 55 ff 00 ae 51 ae 51
> complete
> Tx: 55 ff 00 30 cf 30 cf
> Rx: 15 ff 00 30 ce 30 ce 55 ff 00 cf 30 cb 34 21 de bb 44
> Battery Level = 8.7 V
>
> >
> > As a work around, you may want to try playing with the near/far settings
> > for IR. Try flipping the switch on the IR tower. To change the RCX's
> > setting, use
> >
> > nqc -near
> > or
> > nqc -far
>
>
> I tried this, and it doesn't seem to make much difference.
>
>
> >
> > Personally, I have the best results with near mode, but I've heard an
> > occasional report of the opposite behavior.
> >
> > Dave
>
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
reply to: dbaum at enteract dot com
|
|
Message has 1 Reply:
 | | Re: using nqc for first time
|
| (...) Voila! Everything seems to work fine on the modem port! I just assumed it would make no difference. Not only does nqc work, but my RoboLab software now works also. I wonder why? I always thought that these two ports were basically the same - I (...) (25 years ago, 24-Jun-99, to lugnet.robotics)
|
Message is in Reply To:
| | Re: using nqc for first time
|
| (...) Cool. Thanks for checking this out. I did get one failure, and then one success, and here are the outputs: nqc -d -l -v test.nqc *** Task 0 = main 000 InType 0, Switch 32 00 01 003 InMode 0, Boolean 42 00 20 006 OutDir A, Fwd e1 81 008 OutMode (...) (25 years ago, 21-Jun-99, to lugnet.robotics)
|
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