[En-Nut-Discussion] STM32F SPI drivers and chip select

Henrik Maier hmnews at proconx.com
Wed Feb 20 23:57:20 CET 2013

Thank you Uwe for the clarification, it's appreciated.


On 21/02/2013 12:06 AM, Uwe Bonnes wrote:
>>>>>> "Henrik" == Henrik Maier <hmnews at proconx.com> writes:
>      Henrik> Hi STM32 Developers, I am currently allocating the pins on a
>      Henrik> hardware to I/O and like to do a quick check regards the STM32F
>      Henrik> SPI drivers:
>      Henrik> The driver seems to use "Software NSS mode". Am I correct that
>      Henrik> any GPIO pin can be used as chip select, not only the dedicated
>      Henrik> NSS pin.
> The code comments suggest so
> Henrik> Would there be any (future) benefit to use the NSS pins
> If somebody extends the driver to use hardware NSS, you can only use the
> extension if you use the NSS pin.
> Bye

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