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pbox · 2014-07-23

Posted on July 23, 2014 at 14:28Hello.I'm trying to get more SD card write performance with STM32F207ZET6 + SDIO + DMA + FatFS.I'm using Kingston 8GB MicroSDHC 4 class. I formatted it with SD Formatter tool. File system FAT32 with 32KB clusters.Writ...

pbox · 2014-07-23

Posted on July 23, 2014 at 17:19This does not apply for SDHC and SDXC cards, they have fixed 100ms/250ms read/write timeouts.

pbox · 2014-07-23

Posted on July 23, 2014 at 16:22Thanks, Clive!Frequent fsync was the case. I need to write fast adc data flow to SD card from device power on to device power off so I need to periodically execute fsync.I don't really need to sync every write so now ...

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FatFS SDIO DMA write speed

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Re: FatFS SDIO DMA write speed