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ChibiOS
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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2910 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2011-05-01 11:14:23 +00:00
parent d5fb75afc4
commit b33b5201ad
3 changed files with 45 additions and 15 deletions
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8
os/hal/include/sdc.h
View File

@ -36,14 +36,18 @@
/*===========================================================================*/
#define SDC_CMD_GO_IDLE_STATE 0
#define SDC_CMD_ALL_SEND_CID 2
#define SDC_CMD_SEND_RELATIVE_ADDR 3
#define SDC_CMD_SEL_DESEL_CARD 7
#define SDC_CMD_SEND_IF_COND 8
#define SDC_CMD_SEND_CSD 9
#define SDC_CMD_APP_OP_COND 41
#define SDC_CMD_APP_CMD 55
#define SDC_MODE_CARDTYPE_MASK 0xF
#define SDC_MODE_CARDTYPE_SD 0 /**< Old SD card. */
#define SDC_MODE_CARDTYPE_SDV11 0 /**< Card is V1.1 compliant. */
#define SDC_MODE_CARDTYPE_SDV20 1 /**< Card is V2.0 compliant. */
#define SDC_MODE_CARDTYPE_MMC 2 /**< Card is MMC. */
#define SDC_MODE_CARDTYPE_MMC 2 /**< Card is MMC compliant. */
#define SDC_CMD8_PATTERN 0x000001AA

8
os/hal/platforms/STM32/sdc_lld.h
View File

@ -132,6 +132,14 @@ struct SDCDriver {
* @brief Various flags regarding the mounted card.
*/
sdcmode_t cardmode;
/**
* @brief Card CID.
*/
uint32_t cid[4];
/**
* @brief Card CSD.
*/
uint32_t csd[4];
/* End of the mandatory fields.*/
};

44
os/hal/src/sdc.c
View File

@ -127,7 +127,7 @@ void sdcStop(SDCDriver *sdcp) {
* @api
*/
bool_t sdcConnect(SDCDriver *sdcp) {
uint32_t resp;
uint32_t resp[1];
chDbgCheck(sdcp != NULL, "sdcConnect");
@ -136,9 +136,6 @@ bool_t sdcConnect(SDCDriver *sdcp) {
sdcp->state = SDC_INITNG;
chSysUnlock();
/* Resets card attributes.*/
sdcp->cardmode = 0;
/* Card clock initialization.*/
sdc_lld_start_clk(sdcp);
@ -147,17 +144,19 @@ bool_t sdcConnect(SDCDriver *sdcp) {
/* V2.0 cards detection.*/
if (!sdc_lld_send_cmd_short_crc(sdcp, SDC_CMD_SEND_IF_COND,
SDC_CMD8_PATTERN, &resp))
sdcp->cardmode |= SDC_MODE_CARDTYPE_SDV20;
SDC_CMD8_PATTERN, resp))
sdcp->cardmode = SDC_MODE_CARDTYPE_SDV20;
/* Voltage verification.*/
if (((resp >> 8) & 0xF) != 1)
if (((resp[0] >> 8) & 0xF) != 1)
goto failed;
if (sdc_lld_send_cmd_short_crc(sdcp, SDC_CMD_APP_CMD, 0, &resp))
if (sdc_lld_send_cmd_short_crc(sdcp, SDC_CMD_APP_CMD, 0, resp))
goto failed;
else {
/* MMC or SD detection.*/
if (sdc_lld_send_cmd_short_crc(sdcp, SDC_CMD_APP_CMD, 0, &resp))
sdcp->cardmode |= SDC_MODE_CARDTYPE_MMC;
if (sdc_lld_send_cmd_short_crc(sdcp, SDC_CMD_APP_CMD, 0, resp))
sdcp->cardmode = SDC_MODE_CARDTYPE_MMC;
else
sdcp->cardmode = SDC_MODE_CARDTYPE_SDV11;
}
if ((sdcp->cardmode & SDC_MODE_CARDTYPE_MASK) == SDC_MODE_CARDTYPE_MMC) {
@ -173,17 +172,36 @@ bool_t sdcConnect(SDCDriver *sdcp) {
i = 0;
while (TRUE) {
chThdSleepMilliseconds(10);
if (sdc_lld_send_cmd_short_crc(sdcp, SDC_CMD_APP_CMD, 0, &resp))
if (sdc_lld_send_cmd_short_crc(sdcp, SDC_CMD_APP_CMD, 0, resp))
goto failed;
if (sdc_lld_send_cmd_short(sdcp, SDC_CMD_APP_OP_COND, ocr, &resp))
if (sdc_lld_send_cmd_short(sdcp, SDC_CMD_APP_OP_COND, ocr, resp))
goto failed;
if ((resp & 0x80000000) != 0)
if ((resp[0] & 0x80000000) != 0)
break;
if (++i >= SDC_ACMD41_RETRY)
goto failed;
}
}
/* Reads CID.*/
if (sdc_lld_send_cmd_long_crc(sdcp, SDC_CMD_ALL_SEND_CID, 0, sdcp->cid))
goto failed;
/* Asks for the RCA.*/
if (sdc_lld_send_cmd_short_crc(sdcp, SDC_CMD_SEND_RELATIVE_ADDR, 0, resp))
goto failed;
/* Reads CSD.*/
if (sdc_lld_send_cmd_long_crc(sdcp, SDC_CMD_SEND_CSD, resp[0], sdcp->csd))
goto failed;
/* Switches to high speed.*/
sdc_lld_set_data_clk(sdcp);
/* Selects the card for operations.*/
if (sdc_lld_send_cmd_short_crc(sdcp, SDC_CMD_SEL_DESEL_CARD, resp[0], resp))
goto failed;
sdcp->state = SDC_ACTIVE;
return FALSE;
failed: