AliOS Things API HAL SOC SD Guide - Shaofa/AliOS-Things-Certification-Manual GitHub Wiki
- 1 hal_sd_init
- 2 hal_sd_blks_read
- 3 hal_sd_blks_write
- 4 hal_sd_erase
- 5 hal_sd_stat_get
- 6 hal_sd_info_get
- 7 hal_sd_finalize
int32_t hal_sd_init(sd_dev_t *sd)-
Description
Initialises a sd interface
-
Parameters
IN/OUT NAME DESC [in] sd the interface which should be initialised -
Returns
0 : on success, EIO : if an error occurred with any step
int32_t hal_sd_blks_read(sd_dev_t *sd, uint8_t *data, uint32_t blk_addr,
uint32_t blks, uint32_t timeout)-
Description
Read sd blocks
-
Parameters
IN/OUT NAME DESC [in] sd the interface which should be initialised [out] data pointer to the buffer which will store incoming data [in] blk_addr sd blk addr [in] blks sd blks [in] timeout timeout in milisecond -
Returns
0 : on success, EIO : if an error occurred with any step
int32_t hal_sd_blks_write(sd_dev_t *sd, uint8_t *data, uint32_t blk_addr,
uint32_t blks, uint32_t timeout)-
Description
Write sd blocks
-
Parameters
IN/OUT NAME DESC [in] sd the interface which should be initialised [in] data pointer to the buffer which will store incoming data [in] blk_addr sd blk addr [in] blks sd blks [in] timeout timeout in milisecond -
Returns
0 : on success, EIO : if an error occurred with any step
int32_t hal_sd_erase(sd_dev_t *sd, uint32_t blk_start_addr, uint32_t blk_end_addr)-
Description
Erase sd blocks
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Parameters
IN/OUT NAME DESC [in] sd the interface which should be initialised [in] blk_start_addr sd blocks start addr [in] blk_end_addr sd blocks end add -
Returns
0 : on success, EIO : if an error occurred with any step
int32_t hal_sd_stat_get(sd_dev_t *sd, hal_sd_stat *stat)-
Description
Get sd state
-
Parameters
IN/OUT NAME DESC [in] sd the interface which should be initialised [out] stat pointer to the buffer which will store incoming dat -
Returns
0 : on success, EIO : if an error occurred with any step
int32_t hal_sd_info_get(sd_dev_t *sd, hal_sd_info_t *info)-
Description
Get sd info
-
Parameters
IN/OUT NAME DESC [in] sd the interface which should be initialised [out] stat pointer to the buffer which will store incoming dat -
Returns
0 : on success, EIO : if an error occurred with any step
int32_t hal_sd_finalize(sd_dev_t *sd)-
Description
Deinitialises a sd interface
-
Parameters
IN/OUT NAME DESC [in] sd the interface which should be initialised -
Returns
0 : on success, EIO : if an error occurred with any step