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fix data align bug 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1039 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
qiuyiuestc 2010-11-05 15:08:51 +00:00
parent 6e4a697d0c
commit ac812f693d
1 changed files with 6 additions and 4 deletions
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10
bsp/mini2440/sdcard.c
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@ -243,7 +243,7 @@ RECMD3:
rt_uint8_t sd_readblock(rt_uint32_t address, rt_uint8_t* buf) rt_uint8_t sd_readblock(rt_uint32_t address, rt_uint8_t* buf)
{ {
int status; rt_uint32_t status, tmp;
rd_cnt=0; rd_cnt=0;
SDIFSTA = SDIFSTA | (1<<16); SDIFSTA = SDIFSTA | (1<<16);
@ -271,7 +271,8 @@ RERDCMD:
status = SDIFSTA; status = SDIFSTA;
if((status & 0x1000) == 0x1000) if((status & 0x1000) == 0x1000)
{ {
*(rt_uint32_t *)buf = SDIDAT; tmp = SDIDAT;
rt_memcpy(buf, &tmp, sizeof(rt_uint32_t));
rd_cnt++; rd_cnt++;
buf += 4; buf += 4;
} }
@ -291,7 +292,7 @@ RERDCMD:
rt_uint8_t sd_writeblock(rt_uint32_t address, rt_uint8_t* buf) rt_uint8_t sd_writeblock(rt_uint32_t address, rt_uint8_t* buf)
{ {
int status; rt_uint32_t status, tmp;
wt_cnt=0; wt_cnt=0;
SDIFSTA = SDIFSTA | (1 << 16); SDIFSTA = SDIFSTA | (1 << 16);
@ -311,7 +312,8 @@ REWTCMD:
status = SDIFSTA; status = SDIFSTA;
if((status & 0x2000) == 0x2000) if((status & 0x2000) == 0x2000)
{ {
SDIDAT=*(rt_uint32_t*)buf; rt_memcpy(&tmp, buf, sizeof(rt_uint32_t));
SDIDAT = tmp;
wt_cnt++; wt_cnt++;
buf += 4; buf += 4;
} }