Subject:
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Re: Can't open serial port in Linux
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Newsgroups:
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lugnet.robotics.rcx.nqc
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Date:
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Wed, 29 Dec 1999 15:27:30 GMT
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Viewed:
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1965 times
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Check the permissions on /dev/ttyS1. I think the default is for it to be
locked down to superuser only. If this is the case, then running nqc from
a normal user account would cause the error you got. You'll need
read/write rights to /dev/ttyS1 in order for NQC to use it.
Baud rate shouldn't matter since NQC will setup the serial port once it is
opened.
Dave Baum
In article <386988AE.1D644CAB@eight.dhs.org>, Brian Hicks
<eight@eight.dhs.org> wrote:
> I'm having some troubles downloading to the RCX in Linux, I have
> RXC_PORT set to /dev/ttyS1, which is the correct serial port, and then I
> run nqc and get:
>
> [brian@magic bin]$ ./nqc -d ../test.nqc
> Downloading Program:error
> Could not open serial port
> [brian@magic bin]$
>
> I don't know what the baudrate of the serial port is set to, nor do I
> know what it should be set to, so that might be the problem.
--
reply to: dbaum at enteract dot com
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Message has 1 Reply:
 | | Re: Can't open serial port in Linux
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| Hi. I just got through fixing a similar problem with my linux box (the fix involved a lot of tedious changing IRQ's in the BIOS, with a lot of tedious rebooting in between). Beyond Dave's good advice, you might want to check out the linux serial (...) (25 years ago, 30-Dec-99, to lugnet.robotics.rcx.nqc)
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Message is in Reply To:
| | Can't open serial port in Linux
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| I'm having some troubles downloading to the RCX in Linux, I have RXC_PORT set to /dev/ttyS1, which is the correct serial port, and then I run nqc and get: [brian@magic bin]$ ./nqc -d ../test.nqc Downloading Program:error Could not open serial port (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.nqc)
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