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Code Issues Wiki Activity

Protection against too many read / write errors on SD

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This commit is contained in:
bsongis 2012-07-02 17:54:24 +00:00
parent d08c172860
commit 67b774cc47
1 changed files with 20 additions and 3 deletions
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23
src/ersky9x/diskio.c
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@ -76,6 +76,7 @@
#define SD_ST_STBY 6
#define SD_ST_TRAN 7
#define SD_ST_DATA 8
#define SD_ST_ERR 9
uint32_t Card_ID[4] ;
uint32_t Card_SCR[2] ;
@ -806,13 +807,14 @@ void sdInit()
#endif
}
uint8_t sdErrorCount = 0;
extern FATFS g_FATFS_Obj;
void sdPoll10mS()
{
if (!CardIsConnected()) {
Card_state = SD_ST_EMPTY;
Sd_rca = 0;
sdErrorCount = 0;
}
switch (Card_state) {
@ -859,6 +861,9 @@ void sdPoll10mS()
f_mount(0, &g_FATFS_Obj);
retrieveAvailableAudioFiles();
break;
case SD_ST_ERR:
break;
}
}
@ -1116,7 +1121,13 @@ DRESULT disk_read (
}
} while ( count ) ;
return count ? RES_ERROR : RES_OK;
if (!count)
return RES_OK;
if (++sdErrorCount > 3)
Card_state = SD_ST_ERR;
return RES_ERROR;
}
@ -1152,7 +1163,13 @@ DRESULT disk_write (
}
} while ( count ) ;
return count ? RES_ERROR : RES_OK;
if (!count)
return RES_OK;
if (++sdErrorCount > 3)
Card_state = SD_ST_ERR;
return RES_ERROR;
}