Jordan Earls
Slight modification to SDFileSystem so that if the first initialization doesn't do the trick it tries doing it again (which so far has fixed every issue for me)
Fork of
SDFileSystem
by 
mbed official
Diff: SDFileSystem.cpp
- Revision:
- 3:722f622d057a
- Parent:
- 2:c8f66dc765d4
diff -r c8f66dc765d4 -r 722f622d057a SDFileSystem.cpp
--- a/SDFileSystem.cpp Thu Nov 29 10:56:21 2012 +0000
+++ b/SDFileSystem.cpp Tue Apr 16 05:23:18 2013 +0000
@@ -122,6 +122,7 @@
SDFileSystem::SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name) :
FATFileSystem(name), _spi(mosi, miso, sclk), _cs(cs) {
_cs = 1;
+ tried_again=0;
}
#define R1_IDLE_STATE (1 << 0)
@@ -152,6 +153,11 @@
// send CMD0, should return with all zeros except IDLE STATE set (bit 0)
if (_cmd(0, 0) != R1_IDLE_STATE) {
+ if(!tried_again)
+ {
+ tried_again=1;
+ return initialise_card(); //for good luck, try it again?
+ }
debug("No disk, or could not put SD card in to SPI idle state\n");
return SDCARD_FAIL;
}