All device drivers in Ecos are almost the same.you have to implement two 
MACRO, DEVTAB_ENTRY,DEVIO_ENTRY, here you can do the job you decribe, 
initialization..read write register interrupt and so on..
BTW, you have to make sure ur bus work correctly, or else it will be a 
nightmare for u to debug device driver...

jet


>From: "Frank Wu" <qiongwu23@gmail.com>
>To: "Frank Wu" <qiongwu23@gmail.com>,  	ecos-discuss 
<ecos-discuss@ecos.sourceware.org>
>Subject: Re: [ECOS] at91sam7 spi test code
>Date: Tue, 30 Jan 2007 16:55:35 -0800
>
>Hi Andrew,
>
>It is very easy to get a SPI eeprom sample chip on line to be the 
>SPI device.
>Maybe my question is not addressed clearly. What I want is how to 
>use
>SPI driver in eCos porting to at91sam7 evaluation board (I have the
>board). Something like,
>1) Initialize the spi port
>2) write
>3) read
>4) use in interrupt/pulling mode
>
>Thanks
>
>Frank
>
>
>On 1/30/07, Andrew Lunn <andrew@lunn.ch> wrote:
>>On Tue, Jan 30, 2007 at 12:36:40PM -0800, Frank Wu wrote:
>> > Dear All,
>> >
>> > I want to use SPI bus on a sam7 uC. Where can I find SPI test 
>>code to
>> > make sure the SPI driver works?
>>
>>This is not easy. You need a device on the bus and a driver for the
>>device. It is not really possible to test the SPI bus driver 
>>without
>>testing the SPI device device driver at the same time.
>>
>>So i suggest you just write your device device driver and maybe
>>connect a logic analyser/3-channel digital oscilloscope to the SPI 
>>bus.
>>
>>        Andrew
>>
>
>--
>Before posting, please read the FAQ: 
>http://ecos.sourceware.org/fom/ecos
>and search the list archive: 
>http://ecos.sourceware.org/ml/ecos-discuss
>

_________________________________________________________________
ÓëÁª»úµÄÅóÓѽøÐн»Á÷£¬ÇëʹÓà MSN Messenger:  http://messenger.msn.com/cn  


-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss