andreika-git
/
ChibiOS
mirror of https://github.com/andreika-git/ChibiOS.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1282 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2009-11-10 22:30:11 +00:00
parent 176444320c
commit 9bc4122e0e
1 changed files with 92 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

92
os/io/mmc_spi.c
View File

@ -395,4 +395,96 @@ bool_t mmcStopSequentialRead(MMCDriver *mmcp) {
return result;
}
/**
* @brief Starts a sequential write.
*
* @param[in] mmcp pointer to the @p MMCDriver object
* @param[in] startblk first block to write
*
* @return The operation status.
* @retval FALSE the operation was successful.
* @retval TRUE the operation failed.
*/
bool_t mmcStartSequentialWrite(MMCDriver *mmcp, uint32_t startblk) {
chDbgCheck(mmcp != NULL, "mmcStartSequentialWrite");
chSysLock();
if (mmcp->mmc_state != MMC_READY) {
chSysUnlock();
return TRUE;
}
mmcp->mmc_state = MMC_WRITING;
chSysUnlock();
spiSelect(mmcp->mmc_spip);
send_hdr(mmcp, MMC_CMDWRITEMULTIPLE, startblk << 9);
if (recvr1(mmcp) != 0x00) {
spiUnselect(mmcp->mmc_spip);
chSysLock();
if (mmcp->mmc_state == MMC_READING)
mmcp->mmc_state = MMC_READY;
chSysUnlock();
return TRUE;
}
return FALSE;
}
/**
* @brief Writes a block within a sequential write operation.
*
* @param[in] mmcp pointer to the @p MMCDriver object
* @param[out] buffer pointer to the write buffer
*
* @return The operation status.
* @retval FALSE the operation was successful.
* @retval TRUE the operation failed.
*/
bool_t mmcSequentialWrite(MMCDriver *mmcp, const uint8_t *buffer) {
chDbgCheck((mmcp != NULL) && (buffer != NULL), "mmcSequentialRead");
chSysLock();
if (mmcp->mmc_state != MMC_WRITING) {
chSysUnlock();
return TRUE;
}
chSysUnlock();
/**/
return TRUE;
}
/**
* @brief Stops a sequential write gracefully.
*
* @param[in] mmcp pointer to the @p MMCDriver object
*
* @return The operation status.
* @retval FALSE the operation was successful.
* @retval TRUE the operation failed.
*/
bool_t mmcStopSequentialWrite(MMCDriver *mmcp) {
static const uint8_t stop[] = {0xFD, 0xFF};
chDbgCheck(mmcp != NULL, "mmcStopSequentialWrite");
chSysLock();
if (mmcp->mmc_state != MMC_WRITING) {
chSysUnlock();
return TRUE;
}
chSysUnlock();
spiSend(mmcp->mmc_spip, sizeof(stop), stop);
spiUnselect(mmcp->mmc_spip);
chSysLock();
if (mmcp->mmc_state == MMC_WRITING)
mmcp->mmc_state = MMC_READY;
chSysUnlock();
return TRUE;
}
/** @} */