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Fix SD-Card initialization process

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After command ACMD41 was being sent we were not waiting
for the error idle state bit being cleared, so we were
really never going out from the initialization phase.
This commit is contained in:
David Gálvez
2018-11-02 12:39:32 +01:00
committed by Markus
parent af9f9bca71
commit 795efccf75
2 changed files with 5 additions and 1 deletions
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4
include/sd_card.h
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@@ -42,4 +42,8 @@ extern void sd_card_init(void);
//#define CT_SDC (CT_SD1|CT_SD2) /* SD */ //#define CT_SDC (CT_SD1|CT_SD2) /* SD */
#define CT_BLOCK 0x08 /* Block addressing */ #define CT_BLOCK 0x08 /* Block addressing */
/* SD error code bits */
#define SD_ERR_IDLE_STATE 0x01
#define SD_ERR_ILLEGAL_CMD 0x04
#endif /* _SD_CARD_H_ */ #endif /* _SD_CARD_H_ */

2
spi/mmc.c
View File

@@ -424,7 +424,7 @@ DSTATUS disk_initialize(uint8_t drv)
while (MCF_SLT_SCNT(0) - target > 0) while (MCF_SLT_SCNT(0) - target > 0)
{ {
res = send_cmd(ACMD41, 1UL << 30); /* Wait for end of initialization with ACMD41(HCS) */ res = send_cmd(ACMD41, 1UL << 30); /* Wait for end of initialization with ACMD41(HCS) */
if (res != 0xff) if ((res & SD_ERR_IDLE_STATE) == 0)
break; break;
} }
debug_printf("res = %d\r\n", res); debug_printf("res = %d\r\n", res);