[En-Nut-Discussion] Harware SPI usage

[Piotr Szlachta]

Ernst

You shouldn't experience any problems around that. 
I my application I got MMC card running on SPI. 
No critical sections are required. 


Regards
p.s.



> -----Original Message-----
> From: en-nut-discussion-bounces at egnite.de [mailto:en-nut-discussion-
> bounces at egnite.de] On Behalf Of Ernst Stippl
> Sent: Monday, November 12, 2007 10:49 PM
> To: 'Ethernut User Chat (English)'
> Subject: Re: [En-Nut-Discussion] Harware SPI usage
> 
> Hi!
> 
> I used the HW SPI on an Ethernut 2 to connect to an external UART chip and
> did not use a critical section while /CS was low. Did not have any
> problems
> (caused by that...)
> 
> Regards
> Ernst
> 
> -----Ursprüngliche Nachricht-----
> Von: en-nut-discussion-bounces at egnite.de
> [mailto:en-nut-discussion-bounces at egnite.de] Im Auftrag von Petri Hyötylä
> Gesendet: Montag, 12. November 2007 10:03
> An: en-nut-discussion at egnite.de
> Betreff: [En-Nut-Discussion] Harware SPI usage
> 
> 
> Hello!
> I'm planning to use the MCU's hardware SPI in a project.
> Is there some precautions in using it to avoid collisions with
> Ethernut's internal SPI traffic or is the hardware SPI complete out of
> question?
> My guess is that the time that I keep my /CS low has to be a nut
> critical section.
> --
> Petri
> 
> 
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