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use shorter sd_send_bytes() routines

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This commit is contained in:
Markus Fröschle
2012-11-19 15:02:06 +00:00
parent 5ee9f19b2c
commit c3f7e0e76e
2 changed files with 29 additions and 28 deletions
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2
BaS_gcc/include/sd_card.h
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@@ -28,5 +28,7 @@ extern int sd_card_init(void);
extern uint32_t sd_com(uint32_t data);
extern void sd_card_idle(void);
extern uint32_t sd_card_get_status(void);
extern uint8_t sd_send_byte(uint8_t byte);
extern uint16_t sd_send_word(uint16_t word);
#endif /* _SD_CARD_H_ */

55
BaS_gcc/sources/sd_card.c
View File

@@ -65,7 +65,7 @@ uint32_t sd_com(uint32_t data)
* initialized previously (either by sd_com or a direct register write).
* Returns a byte received from SPI (contents of the RX FIFO).
*/
inline uint8_t sd_byte(uint8_t byte)
inline uint8_t sd_send_byte(uint8_t byte)
{
* (volatile uint8_t *) (&MCF_DSPI_DTFR + 3) = byte;
@@ -75,7 +75,7 @@ inline uint8_t sd_byte(uint8_t byte)
/*
* as above, but word sized
*/
inline uint16_t sd_word(uint16_t word)
inline uint16_t sd_send_word(uint16_t word)
{
* (volatile uint16_t *) (&MCF_DSPI_DTFR + 2) = word;
@@ -116,9 +116,11 @@ int sd_card_init(void)
wait(10000);
MCF_DSPI_DMCR = DSPI_DMCR_CONF;
for (i = 0; i < 10; i++)
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00FF);
for (i = 1; i < 10; i++)
{
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00FF);
ret = sd_send_byte(0xff);
}
MCF_DSPI_DMCR = DSPI_DMCR_CONF | MCF_DSPI_DMCR_CSIS5; /* CS5 inactive */
@@ -130,10 +132,8 @@ int sd_card_init(void)
}
MCF_DSPI_DMCR = DSPI_DMCR_CONF;
for (i = 0; i < 2; i++)
{
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00FF);
}
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00FF);
ret = sd_send_byte(0xff);
MCF_DSPI_DMCR = DSPI_DMCR_CONF;
@@ -154,23 +154,22 @@ void sd_card_idle(void)
for (i = 0; i < 100; i++)
{
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00FF);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0040);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0000);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0000);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0000);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0000);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0095);
ret = sd_send_byte(0xff);
ret = sd_send_byte(0x40);
ret = sd_send_byte(0x00);
ret = sd_send_byte(0x00);
ret = sd_send_byte(0x00);
ret = sd_send_byte(0x00);
ret = sd_send_byte(0x95);
for (j = 0; j < 6; j++)
{
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00FF);
ret = sd_send_byte(0xff);
if (ret & 0x01)
{
break;
}
}
if (ret & 0x01)
break;
}
}
@@ -180,13 +179,13 @@ void sd_card_read_ic(void)
while (/* no suitable data received */ 1)
{
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00FF);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0048);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0000);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0000);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0001);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00aa);
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x0087);
ret = sd_send_byte(0xFF);
ret = sd_send_byte(0x48);
ret = sd_send_byte(0x00);
ret = sd_send_byte(0x00);
ret = sd_send_byte(0x01);
ret = sd_send_byte(0xaa);
ret = sd_send_byte(0x87);
ret = sd_card_get_status();
@@ -198,7 +197,7 @@ void sd_card_read_ic(void)
{
continue;
}
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00ff);
ret = sd_send_byte(0xff);
/* move.b d5,d0 ? */
}
}
@@ -209,7 +208,7 @@ uint32_t sd_card_get_status(void)
do
{
ret = sd_com(MCF_DSPI_DTFR_EOQ | MCF_DSPI_DTFR_CS5 | 0x00FF);
ret = sd_send_byte(0xFF);
} while ((ret & 0xff) == 0xff);
return ret;