EV3 SD card support #347
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EV3 SD card support #347
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Also, I just tried an SDXC card and it does seem to work just fine (goes through all of the initialization steps, but I haven't actually tried reading any sectors yet). The hardware peripheral has no knowledge of what SD card capacity you've inserted -- this is entirely under software control. Data corruption (with ev3dev? with the stock firmware?) is probably just a software bug. |
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This is far from complete, but I wanted to make it known that I've hacked on some basic SD card support just to get an understanding of how the MMC/SD controller works.
This initialized a SDHC card (no legacy SD support) and prints out a bunch of its internal registers as debug spam.