From: Kim Rostgaard Christensen <krc@retrospekt.dk>
Subject: Asynchronous I/O on a serial device
Date: Sat, 11 Jun 2011 23:46:47 +0200
Date: 2011-06-11T23:46:47+02:00 [thread overview]
Message-ID: <it0noa$ce3$1@munin.nbi.dk> (raw)
Hi there
I am desperately trying to implement a protocol on top of a serial
transport.
I am running Debian, and for the moment using /dev/ttyACM0 for reading.
This works fine using standard the Text_IO package and In_File.
Only, when I need to write to the device It fails because It is in
In_File mode - Obviously.
Reset on the file handle gives me a USE_ERROR exception, probably due to
it being a special file - please correct me if I am wrong.
Do I need to implement this more system-near/specific, or is there some
way I can do bi-directional communication like, for instance two file
handles. (I tried Form => "shared=yes", and it also failed).
It is a usb device that emulates UART, and it seems to be contempt with
just about any Baud setting.
/Kim
next reply other threads:[~2011-06-11 21:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-11 21:46 Kim Rostgaard Christensen [this message]
2011-06-12 5:23 ` Asynchronous I/O on a serial device Randy Brukardt
2011-06-12 7:33 ` Kim Rostgaard Christensen
2011-06-12 5:42 ` Yannick Duchêne (Hibou57)
2011-06-12 7:49 ` Kim Rostgaard Christensen
2011-06-12 10:35 ` Kim Rostgaard Christensen
2011-06-12 11:04 ` Yannick Duchêne (Hibou57)
2011-06-12 18:06 ` Kim Rostgaard Christensen
2011-06-12 21:01 ` anon
2011-06-14 6:37 ` Kim Rostgaard Christensen
2011-06-15 17:02 ` Simon Clubley
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