Subject:
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Re: LinuxPPC and "No response from RCX" problem
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Newsgroups:
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lugnet.robotics.rcx.nqc
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Date:
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Sat, 4 Nov 2000 00:28:32 GMT
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Viewed:
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2108 times
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Chris wrote:
> In lugnet.robotics.rcx.nqc, Jan-Albert van Ree writes:
> > Chris wrote:
> > > I recently bought an RIS kit and from my Windows box it works fine. When
> > > I try using LinuxPPC off my PPC Amiga I get the following:
> > > [root] /home/chris/nqc/nqc-2.2.r2 >bin/nqc -v -raw 10
> > Did you set the correct permissions for the serial ports (normally they're
> > only accessible by root under Linux) Do a chmod 777 for /dev/ttyS0
> Umm.. note the prompt ;)) I'd done an su root before testing to avoid
> permissions problems. This seems like a problem with nqc on LinuxPPC 3Q99,
> but I can't understand quite what it is as the tower obviously works -
> the green light is visible and it maintains a steady brightness and it works
> fine from Windoze. The only thing I can think of is that the baud rate or
> serial format isn't correct - the serial port works fine with my modem so
> it's not a hardware problem.
Have you tried using setserial to set the correct baud rate and other
options?
Also note that when using "su" it sometimes doesn't take over all the
settings from the user account that you used to log on. Perhaps the sudo
command would work better.
For debugging purposes, here's my statserial listing for /dev/ttyS0, with
the tower on and all working.
Device: /dev/ttyS0
Signal Pin Pin Direction Status Full
Name (25) (9) (computer) Name
----- --- --- --------- ------ -----
FG 1 - - - Frame Ground
TxD 2 3 out - Transmit Data
RxD 3 2 in - Receive Data
RTS 4 7 out 1 Request To Send
CTS 5 8 in 1 Clear To Send
DSR 6 6 in 0 Data Set Ready
GND 7 5 - - Signal Ground
DCD 8 1 in 0 Data Carrier Detect
DTR 20 4 out 1 Data Terminal Ready
RI 22 9 in 0 Ring Indicator
[javanree@burmashave /dev]$ nqc -v -raw 10
Tx: 55 ff 00 10 ef 10 ef
Rx: 55 ff 00 10 ef 10 ef 55 ff 00 ef 10 ef 10
Tx: 55 ff 00 18 e7 18 e7
Rx: 55 ff 00 18 e7 18 e7 55 ff 00 e7 18 e7 18
And baud rate is set to 2400 as well...
This did it for me.
--
Jan-Albert "Anvil" van Ree | http://www.nl.3dgamers.com
3D Sims Archive maintainer | http://www.3dgamers.com
Thrustmaster Resource Center | http://www.3dgamers.com/tmresourcecenter/
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Message is in Reply To:
 | | Re: LinuxPPC and "No response from RCX" problem
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| (...) Umm.. note the prompt ;)) I'd done an su root before testing to avoid permissions problems. This seems like a problem with nqc on LinuxPPC 3Q99, but I can't understand quite what it is as the tower obviously works - the green light is visible (...) (24 years ago, 3-Nov-00, to lugnet.robotics.rcx.nqc)
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