Macros | |
| #define | byte_adr_of_block(ad) (ad<<9) |
| #define | MMC_CARD 0 |
| #define | MMC_CLR_WRITE_PROT 29 |
| #define | MMC_CMD2 2 |
| illegal in SPI mode ! More... | |
| #define | MMC_CRC_ON_OFF 59 |
| Turns CRC check on/off. More... | |
| #define | MMC_DE_CARD_LOCKED 0x04 |
| #define | MMC_DE_CC_ERROR 0x02 |
| #define | MMC_DE_ECC_FAIL 0x04 |
| #define | MMC_DE_ERROR 0x01 |
| #define | MMC_DE_MASK 0x1F |
| #define | MMC_DE_OUT_OF_RANGE 0x04 |
| #define | MMC_DR_ACCEPT 0x05 |
| #define | MMC_DR_MASK 0x1F |
| #define | MMC_DR_REJECT_CRC 0x0B |
| #define | MMC_DR_REJECT_WRITE_ERROR 0x0D |
| #define | MMC_ERASE 38 |
| Perform block/mass erase. More... | |
| #define | MMC_GO_IDLE_STATE 0 |
| initialize card to SPI-type access More... | |
| #define | MMC_LOCK_UNLOCK 42 |
| To start a lock/unlock/pwd operation. More... | |
| #define | MMC_PROGRAM_CSD 27 |
| #define | MMC_R1_ADDRESS 0x20 |
| #define | MMC_R1_BUSY 0x80 |
| R1 response: bit indicates card is busy. More... | |
| #define | MMC_R1_COM_CRC 0x08 |
| #define | MMC_R1_ERASE_RESET 0x02 |
| #define | MMC_R1_ERASE_SEQ 0x10 |
| #define | MMC_R1_IDLE_STATE 0x01 |
| #define | MMC_R1_ILLEGAL_COM 0x04 |
| #define | MMC_R1_PARAMETER 0x40 |
| #define | MMC_READ_SINGLE_BLOCK 17 |
| read a block More... | |
| #define | MMC_SECTOR_SIZE 512 |
| #define | MMC_SEND_CID 10 |
| get card's CID More... | |
| #define | MMC_SEND_CSD 9 |
| get card's CSD More... | |
| #define | MMC_SEND_IF_COND 8 |
| #define | MMC_SEND_OP_COND 1 |
| set card operational mode More... | |
| #define | MMC_SEND_STATUS 13 |
| #define | MMC_SEND_WRITE_PROT 30 |
| #define | MMC_SET_BLOCKLEN 16 |
| Set number of bytes to transfer per block. More... | |
| #define | MMC_SET_WRITE_PROT 28 |
| #define | MMC_STARTBLOCK_MWRITE 0xFC |
| #define | MMC_STARTBLOCK_READ 0xFE |
| when received from card, indicates that a block of data will follow More... | |
| #define | MMC_STARTBLOCK_WRITE 0xFE |
| when sent to card, indicates that a block of data will follow More... | |
| #define | MMC_STOPTRAN_WRITE 0xFD |
| #define | MMC_TAG_ERASE_GROUP_END 36 |
| Sets end of erase group (mass erase) More... | |
| #define | MMC_TAG_ERASE_GROUP_START 35 |
| Sets beginning of erase group (mass erase) More... | |
| #define | MMC_TAG_SECTOR_END 33 |
| #define | MMC_TAG_SECTOR_START 32 |
| #define | MMC_UNTAG_ERASE_GROUP 37 |
| Untag (unset) erase group (mass erase) More... | |
| #define | MMC_UNTAG_SECTOR 34 |
| #define | MMC_WRITE_BLOCK 24 |
| write a block More... | |
| #define | OP_FORCED_ERASE 0x08 |
| #define | OP_LOCK 0x04 |
| #define | OP_RESET_PWD 0x02 |
| #define | OP_SET_PWD 0x01 |
| #define | OP_UNLOCK 0x00 |
| #define | SD_APP_CMD55 55 |
| Use before any specific command (type ACMD) More... | |
| #define | SD_CARD 1 |
| #define | SD_CARD_2 2 |
| #define | SD_CARD_2_SDHC 3 |
| #define | SD_CARD_T 0 |
| #define | SD_FAILURE -1 |
| #define | SD_MMC 0 |
| #define | SD_READ_OCR 58 |
| #define | SD_SEND_OP_COND_ACMD 41 |
| Same as MMC_SEND_OP_COND but specific to SD (must be preceded by CMD55) More... | |
| #define | SD_SPEC_1 0 |
| #define | SD_SPEC_2 1 |
| #define | SD_SPEC_SDHC 2 |
| #define | SD_TAG_WR_ERASE_GROUP_END 33 |
| #define | SD_TAG_WR_ERASE_GROUP_START 32 |
| #define | SDHC_CARD 1 |
Functions | |
| bool | is_sd_mmc_spi_write_pwd_locked (void) |
| Protection functions (optionnal) More... | |
| int | sd_mmc_spi_check_hc (void) |
| This function checks whether detected card is High Capacity SD card. More... | |
| bool | sd_mmc_spi_check_presence (void) |
| This function check the presence of a memory card. More... | |
| uint8_t | sd_mmc_spi_command (uint8_t, uint32_t) |
| 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... | |
| bool | sd_mmc_spi_erase_sector_group (uint32_t, uint32_t) |
| 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... | |
| 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... | |
| bool | sd_mmc_spi_get_cid (uint8_t *) |
| This function reads the CID (Card Identification Data) of the memory card. More... | |
| bool | sd_mmc_spi_get_csd (uint8_t *) |
| This function reads the CSD (Card Specific Data) of the memory card. More... | |
| int | sd_mmc_spi_get_if (void) |
| This function detects the card interface. More... | |
| 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... | |
| 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... | |
| bool | sd_mmc_spi_internal_init (void) |
| Low-level functions (basic management) More... | |
| bool | sd_mmc_spi_lock_operation (uint8_t, uint8_t, uint8_t *) |
| This function manages locking operations for the SD/MMC card (password protection) More... | |
| bool | sd_mmc_spi_mem_check (void) |
| This function performs a memory check on the SD_MMC. More... | |
| bool | sd_mmc_spi_read_close (void) |
| This function unselects the current SD_MMC memory. More... | |
| void | sd_mmc_spi_read_close_PDCA (void) |
| Stop PDCA transfer. More... | |
| bool | sd_mmc_spi_read_multiple_sector (uint16_t nb_sector) |
| This function allow to read multiple sectors. More... | |
| void | sd_mmc_spi_read_multiple_sector_callback (const void *psector) |
| bool | sd_mmc_spi_read_open (uint32_t) |
| Functions for preparing block read/write. More... | |
| bool | sd_mmc_spi_read_open_PDCA (uint32_t) |
| functions used to make a transfer from SD_MMC to RAM using the PDCA More... | |
| bool | sd_mmc_spi_read_sector (uint16_t) |
| bool | sd_mmc_spi_read_sector_to_ram (void *ram) |
| Functions to read/write one sector (512btes) with ram buffer pointer. More... | |
| uint8_t | sd_mmc_spi_send_and_read (uint8_t) |
| This function sends a byte over SPI and returns the byte read from the slave. More... | |
| uint8_t | sd_mmc_spi_send_command (uint8_t, uint32_t) |
| 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... | |
| bool | sd_mmc_spi_wait_not_busy (void) |
| This function waits until the SD/MMC is not busy. More... | |
| void | sd_mmc_spi_write_close (void) |
| This function fills the end of the logical sector (512B) and launch page programming. More... | |
| bool | sd_mmc_spi_write_multiple_sector (uint16_t nb_sector) |
| This function allow to write multiple sectors. More... | |
| void | sd_mmc_spi_write_multiple_sector_callback (void *psector) |
| bool | sd_mmc_spi_write_open (uint32_t) |
| This function opens a SD_MMC memory in write mode at a given sector address. More... | |
| bool | sd_mmc_spi_write_sector (uint16_t) |
| Functions to link USB DEVICE flow with MMC. More... | |
| bool | sd_mmc_spi_write_sector_from_ram (const void *ram) |
| This function writes one MMC sector from a ram buffer. More... | |
Variables | |
| volatile uint64_t | capacity |
| volatile uint16_t | capacity_mult |
| uint8_t | card_type |
| uint8_t | csd [16] |
| uint16_t | erase_group_size |
| uint8_t | r1 |
| uint16_t | r2 |
| bool | sd_mmc_spi_init_done |
| volatile uint32_t | sd_mmc_spi_last_block_address |
1.8.5