MQX Software SolutionsのトピックDMA and MFS...? https://community.nxp.com/t5/MQX-Software-Solutions/DMA-and-MFS/m-p/184524#M3065 <HTML><HEAD></HEAD><BODY><P>Is there any chance to write to microSD card using MFS and DMA?</P><P>this is a bottleneck&nbsp;for me... 5ms to write 512bytes..&nbsp;</P><P>anyone have any better way to speedup the writing process to the microSD?</P><P>&nbsp;</P><P>one more question, how do i determine for sure (other then IO_IOCTL_ESDHC_GET_BUS_WIDTH) if the esdhc driver uses 4BIT or 1BIT?</P><P>&nbsp;</P><P>Thanks!!</P><P>Naftali.</P></BODY></HTML> Tue, 31 Jul 2012 19:31:33 GMT naftalir 2012-07-31T19:31:33Z DMA and MFS...? https://community.nxp.com/t5/MQX-Software-Solutions/DMA-and-MFS/m-p/184524#M3065 <HTML><HEAD></HEAD><BODY><P>Is there any chance to write to microSD card using MFS and DMA?</P><P>this is a bottleneck&nbsp;for me... 5ms to write 512bytes..&nbsp;</P><P>anyone have any better way to speedup the writing process to the microSD?</P><P>&nbsp;</P><P>one more question, how do i determine for sure (other then IO_IOCTL_ESDHC_GET_BUS_WIDTH) if the esdhc driver uses 4BIT or 1BIT?</P><P>&nbsp;</P><P>Thanks!!</P><P>Naftali.</P></BODY></HTML> Tue, 31 Jul 2012 19:31:33 GMT https://community.nxp.com/t5/MQX-Software-Solutions/DMA-and-MFS/m-p/184524#M3065 naftalir 2012-07-31T19:31:33Z Re: DMA and MFS...? https://community.nxp.com/t5/MQX-Software-Solutions/DMA-and-MFS/m-p/184525#M3066 <HTML><HEAD></HEAD><BODY><P>Hello naftalir,</P><P>&nbsp;</P><P>the improvements in MFS were made and speed was significantly increased. However this changes were not merged into 3.8.1 which is actual release due. It's going to be part of the MQX 4.0. It was stated in previous post related to MFS here on the forum.</P><P>&nbsp;</P><P>I don't know any other way to determine bus width other than use IOCTL command.</P><P>&nbsp;</P><P>Regards,</P><P>MartinK</P></BODY></HTML> Mon, 06 Aug 2012 15:44:35 GMT https://community.nxp.com/t5/MQX-Software-Solutions/DMA-and-MFS/m-p/184525#M3066 c0170 2012-08-06T15:44:35Z