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Re: SPI interword gap
by William Hue-2
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David,
If you make use of the hardware FIFO, there should be no inter-word gaps. If you still get the occasional gap with the FIFO, then using DMA should get rid of that. Are you using the standard driver or a custom one that you wrote?
William
On 2012-06-22 12:46, David Baur wrote:
> I'm attempting to send 4K 16 bit words over the SPI bus at 24Mhz. Theoretically it possible, but I've noticed that there is a clock gap between words. Does anyone have any experience on how to reduce or eliminate this gap? I've discovered a 'turbo' mode, but haven't really noticed a reduction in gap size.
>
> Thanks
>
> --
> David G. Baur
> 505 286-0293 h
> 505 284-8031 w
> 505 362-4443 c
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>
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> will include endpoint security, mobile security and the latest in malware
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Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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If you make use of the hardware FIFO, there should be no inter-word gaps. If you still get the occasional gap with the FIFO, then using DMA should get rid of that. Are you using the standard driver or a custom one that you wrote?
William
On 2012-06-22 12:46, David Baur wrote:
> I'm attempting to send 4K 16 bit words over the SPI bus at 24Mhz. Theoretically it possible, but I've noticed that there is a clock gap between words. Does anyone have any experience on how to reduce or eliminate this gap? I've discovered a 'turbo' mode, but haven't really noticed a reduction in gap size.
>
> Thanks
>
> --
> David G. Baur
> 505 286-0293 h
> 505 284-8031 w
> 505 362-4443 c
>
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>
>
>
> _______________________________________________
> gumstix-users mailing list
> gumstix-users@...
> https://lists.sourceforge.net/lists/listinfo/gumstix-users
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
gumstix-users mailing list
gumstix-users@...
https://lists.sourceforge.net/lists/listinfo/gumstix-users
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