About luke.herbschleb

luke.herbschleb · 2019-09-20

Dear all,I am working with the sdmmc lib from STM and i am trying to get it working in DS (Default Speed @25Mhz) with a CARD_SDHC_SDXC, CARD_ULTRA_HIGH_SPEED sd card.When I write multiple blocks with the IDMA for the first time it’s no problem and ev...

luke.herbschleb · 2019-10-04

I have fount the solution!The problem was with the HAL_SD_WriteBlocks_DMA().The HAL_SD_WriteBlocks_DMA() will try to set the block length of the write command.For SD is this size fixed(512 bytes) and this will trow the state-machine off.The solution ...

luke.herbschleb · 2019-09-20

The interrupt handler from the hal (HAL_SD_IRQHandler()) has a call-back HAL_SD_TxCpltCallback() and i used this to check if i am able to write again.This call back is based on the SDMMC_FLAG_DATAEND but to be sure I also tried SDMMC_IT_IDMABTCAlso i...

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STM32H7 SDMMC IDMA write multiple blocks error

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Re: STM32H7 SDMMC IDMA write multiple blocks error