Re: [spi-devel-general] SPI troubles

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On Mon, Mar 15, 2010 at 11:44 AM, Ben Gamari <bgamari.foss@xxxxxxxxx> wrote:
> While I can reliably see a signal sent on the SIMO line, I have not once been
> able to recieve anything but zeros in return. I have verified that the the SOMI
> ball works as expected as a GPIO input.
a) You might as well want to verify your SPIDEV setup by using the
same pins in GPIO mode
and controlling them by gpio-bitbanging i/f  ... first on both boards
and then on either, to more
accurately diagnose the problem).
b) Maybe line-strength settings should be checked, if available, of
the relevant pins?

hth
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