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| bool | is_sd_mmc_spi_write_pwd_locked (void) |
| | This function checks if the card is password-locked Old versions of MMC card don't support this feature ! For a MMC, "lock protection" is featured from v2.1 release ! => see CSD[0]<5:2> bits to know the version : 0x0=1.x, 0x1=1.4, 0x2=2.x, 0x3=3.x, 0x4=4.0. More...
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| int | sd_mmc_spi_check_hc (void) |
| | This function checks whether detected card is High Capacity SD card. More...
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| bool | sd_mmc_spi_check_presence (void) |
| | This function check the presence of a memory card. More...
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| uint8_t | sd_mmc_spi_command (uint8_t command, uint32_t arg) |
| | This function sends a command WITH DATA STATE to the SD/MMC and waits for R1 response The memory /CS signal is not affected so this function can be used to send a command during a large transmission. More...
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| bool | sd_mmc_spi_erase_sector_group (uint32_t adr_start, uint32_t adr_end) |
| | This function erase a group of sectors NOTE : Erasing operation concerns only groups of sectors and not one sector only The global variable "erase_group_size" (extracted from CSD) contains the sector group size boundary User specifies the addresses of the first group and the last group to erase (several contiguous groups can be selected for erase) An misaligned address will not generate an error since the memory card ignore the LSbs of the address Some examples (with "erase_group_size" = 0x20 = group boundary) : More...
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| void | sd_mmc_spi_get_capacity (void) |
| | This function extracts structure information from CSD array and compute the number of blocks of the memory card (stored in global uint32_t sd_mmc_spi_last_block_address), its capacity in bytes (stored in global uint32_t capacity) and the block group size for an erase operation Here is defined the position of required fields in CSD array : READ_BL_LEN : [83:80] == data[5] && 0x0f C_SIZE : [73:72] == data[6] && 0x03 [71:64] == data[7] [63:62] == data[8] && 0xc0 C_SIZE_MULT : [49:48] == data[9] && 0x03 [47] == data[10] && 0x80 ERASE_GRP_SIZE (MMC card only) : [46:42] == data[10] && 0x7c ERASE_GRP_MULT (MMC card only) : [41:40] == data[10] && 0x03 [39:37] == data[11] && 0xe0 SECTOR_SIZE (SD card only) : [45:40] == data[10] && 0x3F [39] == data[11] && 0x80. More...
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| bool | sd_mmc_spi_get_cid (uint8_t *buffer) |
| | This function reads the CID (Card Identification Data) of the memory card. More...
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| bool | sd_mmc_spi_get_csd (uint8_t *buffer) |
| | This function reads the CSD (Card Specific Data) of the memory card. More...
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| int | sd_mmc_spi_get_if (void) |
| | This function detects the card interface. More...
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| bool | sd_mmc_spi_get_status (void) |
| | This function reads the STATUS register of the memory card After a read the error flags are automatically cleared. More...
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| bool | sd_mmc_spi_init (spi_options_t spiOptions, unsigned int pba_hz) |
| | This function initializes the SD/MMC controller & the SPI bus(over which the SD_MMC is controlled). More...
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| bool | sd_mmc_spi_internal_init (void) |
| | This function initializes the SD/MMC controller. More...
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| bool | sd_mmc_spi_lock_operation (uint8_t operation, uint8_t pwd_lg, uint8_t *pwd) |
| | This function manages locking operations for the SD/MMC card (password protection) More...
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| bool | sd_mmc_spi_mem_check (void) |
| | This function performs a memory check on the SD_MMC. More...
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| bool | sd_mmc_spi_read_close (void) |
| | This function unselects the current SD_MMC memory. More...
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| void | sd_mmc_spi_read_close_PDCA (void) |
| | Stop PDCA transfer. More...
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| bool | sd_mmc_spi_read_multiple_sector (uint16_t nb_sector) |
| | This function allow to read multiple sectors. More...
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| bool | sd_mmc_spi_read_open (uint32_t pos) |
| | This function opens a SD_MMC memory in read mode at a given sector address (not byte address) More...
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| bool | sd_mmc_spi_read_open_PDCA (uint32_t pos) |
| | Reading using PDCA. More...
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| bool | sd_mmc_spi_read_sector_to_ram (void *ram) |
| | This function read one MMC sector and load it into a ram buffer. More...
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| uint8_t | sd_mmc_spi_send_and_read (uint8_t data_to_send) |
| | This function sends a byte over SPI and returns the byte read from the slave. More...
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| uint8_t | sd_mmc_spi_send_command (uint8_t command, uint32_t arg) |
| | This function sends a command WITH NO DATA STATE to the SD/MMC and waits for R1 response This function also selects and unselects the memory => should be used only for single command transmission. More...
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| bool | sd_mmc_spi_wait_not_busy (void) |
| | This function waits until the SD/MMC is not busy. More...
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| void | sd_mmc_spi_write_close (void) |
| | This function fills the end of the logical sector (512B) and launch page programming. More...
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| bool | sd_mmc_spi_write_multiple_sector (uint16_t nb_sector) |
| | This function allow to write multiple sectors. More...
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| bool | sd_mmc_spi_write_open (uint32_t pos) |
| | This function opens a SD_MMC memory in write mode at a given sector address. More...
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| bool | sd_mmc_spi_write_sector_from_ram (const void *ram) |
| | This function writes one MMC sector from a ram buffer. More...
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1.8.5