From: "Julien Stéphane" <Stephane.Julien@he-arc.ch>
To: <ecos-discuss@ecos.sourceware.org>
Subject: [ECOS] RE : [ECOS] Does AT91 SPI driver support external SPI devices?
Date: Wed, 28 Feb 2007 15:07:00 -0000 [thread overview]
Message-ID: <F7620004260C5D4DB836EDBF8CC6872D028943B8@neptune.intra.eiaj.ch> (raw)
In-Reply-To: <F7620004260C5D4DB836EDBF8CC6872D028943B7@neptune.intra.eiaj.ch>
Thank you for your help!
Indeed, I didn't checked the pins in CDL. So I use the default values : AT91_SPI_NPCS0, AT91_SPI_NPCS1, AT91_SPI_NPCS2, AT91_SPI_NPCS3. Is it correct or do I havt to chage it?
On my AT91 board, I connected the scope to the pins MOSI-GND and SCLK-GND, nothing on the analyzer. To check if a chip select was enabled, i measured voltage between GND and NSPICS5-8 and no CS were enabled. Nevertheless, I set the dev_num value of the cyg_spi_at91_device_t structure to the value 4-8. All voltages are to 3.3V and no CS is to 0V.
> O.K. Lets start with a silly question. Are you sure you are looking at
> the correct pins. The pins used for NPCS are configurable by CDL. On
> most AT91 devices, the peripheral devices can select between multiple
> pins on the chip. Which pins do you have you logic analyze connected
> to? Which pins is the SPI device driver using?
>
> Andrew
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next prev parent reply other threads:[~2007-02-28 15:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <F7620004260C5D4DB836EDBF8CC6872D028943B5@neptune.intra.eiaj.ch>
2007-02-28 14:05 ` Julien Stéphane
2007-02-28 14:43 ` Andrew Lunn
[not found] ` <F7620004260C5D4DB836EDBF8CC6872D028943B7@neptune.intra.eiaj.ch>
2007-02-28 15:07 ` Julien Stéphane [this message]
[not found] ` <20070228151737.GA14399@lunn.ch>
2007-02-28 15:34 ` [ECOS] RE : RE?: " Julien Stéphane
2007-02-28 15:59 ` [ECOS] RE?: " Andrew Lunn
2007-02-28 16:45 ` [ECOS] RE : " Julien Stéphane
2007-02-28 17:37 ` [ECOS] Re: RE?: " Andrew Lunn
2007-03-01 10:15 ` [ECOS] RE : RE: RE: " Julien Stéphane
2007-03-01 13:04 ` [ECOS] RE?: " Andrew Lunn
2007-03-01 14:43 ` Julien Stéphane
2007-02-28 17:13 ` [ECOS] RE : [ECOS] RE?: RE?: " Julien Stéphane
2007-02-28 17:36 ` [ECOS] " Grant Edwards
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