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Date: Fri, 08 Jun 2007 14:09:00 -0000
To: Andre Bender <andre.bender@gmx.de>
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From: Andrew Lunn <andrew@lunn.ch>
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Subject: Re: [ECOS] Asyn serial io
X-SW-Source: 2007-06/txt/msg00094.txt.bz2

On Fri, Jun 08, 2007 at 10:42:12AM +0200, Andre Bender wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
> 
> Hi,
> 
> the online documentation leaves me slightly puzzeled when atemting to
> figure out how to set a serial port to asynchronus mode.
> 
> I know I should use the cyg_io_set_config function with
> CYG_IO_SET_CONFIG_SERIAL_READ/WRITE_BLOCKING. What I can't figure out
> wether the value 1 is blocking or non blocking. (possible values are 0
> and 1 according to the online docu)

<Obi-Wan Kenobi>
Use the source Luke.
</Obi-Wan Kenobi>

    case CYG_IO_SET_CONFIG_READ_BLOCKING:
        if (*len < sizeof(cyg_uint32) || 0 == in_cbuf->len) {
            return -EINVAL;
        }
        in_cbuf->blocking = (1 == *(cyg_uint32*)xbuf) ? true : false;
        break;
    case CYG_IO_SET_CONFIG_WRITE_BLOCKING:
        if (*len < sizeof(cyg_uint32) || 0 == out_cbuf->len) {
            return -EINVAL;
        }
        out_cbuf->blocking = (1 == *(cyg_uint32*)xbuf) ? true : false;
        break;

So a value of 1 sets ->blocking to true.

   Andrew

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