SD卡能读不能写

发布于 2013-07-27 19:32:10 浏览：2952 订阅该版

初始化时控制台输出
mem testing....
mem test pass!! mem size is 512k !
finsh />error detected and set to -2/0 (cmd = 8),0x00000004
error detected and set to -2/0 (cmd = 5),0x00000004
error detected and set to -2/0 (cmd = 8),0x00000004
SD card capacity 124160 KB
found part[0], begin: 49664, size: 121.207MB
flash0 mount to / failed!, fatmat and try again!
can not find device driver: flash0
flash0 mount to / failed!
flash0 mount to / failed!
sd0 mount to /SD ok! 
向SD卡写入文件就挂起了。
finsh />list_sem()
semaphore v   suspend thread
--------  --- --------------
sem_sd0   000 0
sd_ack    000 1:init
sd_bus_l  000 0
shrx      000 0
heap      001 0
	0, 0x00000000

finsh />list_thread()
 thread  pri  status      sp     stack size max used   left tick  error
-------- ---- ------- ---------- ---------- ---------- ---------- ---
mmcsd_de 0x0f suspend 0x00000098 0x00000400 0x000001a8 0x00000013 000
tshell   0x14 ready   0x00000088 0x00000800 0x000001b4 0x00000005 -04
tidle    0x1f ready   0x00000044 0x00000200 0x0000005c 0x00000004 000
led      0x10 suspend 0x00000078 0x00000100 0x00000078 0x00000005 000
init     0x08 suspend 0x000002c0 0x00004000 0x00000330 0x00000012 000
	0, 0x00000000

finsh />list_mutex()
mutex    owner    hold suspend thread
-------- -------- ---- --------------
fat0     init     0001 0
spi1     (NULL)   0000 0
fslock   (NULL)   0000 0
	0, 0x00000000
求解可能的原因