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LPC4337 SD/MMC EXT_CSD problem

Question asked by Rick Rigby on Jul 7, 2017

LPC4337 SD/MMC problem: Can't read EXT_CSD register. Other non-data commands are working (CMD0, CMD1, CMD2, CMD3,,,CMD7). After I fixed a CLKDIV bug so I could run the acquire process at 400kHz things started to work. I cannot read the EXT_CSD though. I'm getting a data timeout. How can I try it without using DMA? (or how can I get DMA to work?)

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