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Re: Serial device driver problem.
- To: "Dennis Ehlin (ECS)" <Dennis dot Ehlin at ecs dot ericsson dot se>
- Subject: Re: [ECOS] Serial device driver problem.
- From: Jonathan Larmour <jlarmour at redhat dot com>
- Date: Tue, 29 May 2001 18:11:20 +0100
- Cc: ecos-discuss at sources dot redhat dot com
- Organization: Red Hat UK Ltd.
- References: <2310E22AE31BD51189DB00A0C9DF89F85A27E2@eseklnt101.kl.sw.ericsson.se>
"Dennis Ehlin (ECS)" wrote:
>
> When i do a serial_read (located serial.c) everything seems to work ok, and i get to the
> cyg_drv_cond_wait(&cbuf->wait) line and it stops there to wait for the cbuf->wait signal. ok.
>
> Then i generate a serial receive interrupt and the serial_rcv_char function is called,
> which sends the cbuf->wait signal with the line cyg_drv_cond_signal(&cbuf->wait).
>
> But nothing happends?, the cyg_drv_cond_wait(&cbuf->wait) never continues, as if it never gets the
> signal.
Perhaps it did get the signal but hasn't read all the bytes requested (the
*len argument).
Jifl
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