Closed GoogleCodeExporter closed 8 years ago
The window for SPI initialization is 100 - 400 kHz.
I choose 125 kHz because I had several cases where cards would not reinitialize
at 250 kHz.
Looks like cards can fail to meet the spec at both 125 and 250 kHz.
Unfortunately the card doesn't see reset so reinitialization of cards has been
a problem. Only cycling power truly resets the SD card.
I have added a #define option in SdReader.h to select 250 kHz and will put a
note in the readme.txt file.
Original comment by Bill.Gre...@gmail.com
on 7 May 2011 at 11:16
Original issue reported on code.google.com by
andycarr@gmail.com
on 7 May 2011 at 6:18