mjb/altos/src/drivers/ao_sdcard.h, branch 1.3.1

altos: Delay while waking up SD card a bit

2013-04-12T08:55:33+00:00

This seems to make bringing the card from idle to ready mode more reliable. If you spam the card with requests, it will eventually whinge and shut down communications. Signed-off-by: Keith Packard

altos: Shorten SD initialization timeouts.

2013-04-02T23:41:29+00:00

This makes failure when no card is present much quicker. Signed-off-by: Keith Packard

altos: Retry SD card I/O. Use time for timeouts instead of counts

2013-04-01T09:08:18+00:00

Sometimes I/O operations may fail; give the card a chance and retry the operation in case it works the next time. Replace the loop counts with loops that check the clock so that they'll have consistent timeouts even if the CPU or SPI speed changes. Signed-off-by: Keith Packard

altos: Increase SD card timeout at startup time

2013-03-31T20:55:16+00:00

Sometimes the SD card takes 'a while' to go into idle mode at first power up. Just hang around waiting for a long time. Signed-off-by: Keith Packard

altos: Add sdcard read/write tracing

2013-03-31T19:23:31+00:00

This just dumps info in trace mode about read and write commands Signed-off-by: Keith Packard

altos: Add SD card writing function

2013-03-31T17:35:47+00:00

Now that the FAT code seems to be operational, go back and add SD writing. Signed-off-by: Keith Packard

altos: Add SDCARD and FAT16 filesystem support

2013-03-27T08:12:33+00:00

This adds a fairly primitive FAT16 file system implementation along with support for SD cards. Signed-off-by: Keith Packard