I've implemented Multi-Sector read - CMD18
I'm not using the AutoCmd12 capability because I could never get it to work so I want to understand and implement it the manual way.
My understanding is that CMD18 is issued and the card starts dumping sectors.
I set SDHC_BLKATTR to the the number of sectors and 512 bytes.
I read 512 byte blocks until I have acquired the number of wanted sectors.
I issue a CMD12 to tell the card to stop sending data.
NOW - my issue - I can't get the SDHC to report data transfer complete.
SDHC_PRSSTAT never has SDHC_PRSSTAT_RTA_MASK, SDHC_PRSSTAT_DLA_MASK, or SDHC_PRSSTAT_CDIHB_MASK as ZERO --- always showing the data transfer incomplete.
I've tried dummy reads after CMD12 -- that works sometime - but not always.
Can someone please identify the proper code to manually terminate CMD18?