Module cmd

Modules§

ext_csd: EXT_CSD byte offsets the driver currently consumes. Full register is 512 bytes; only document the ones we read.

CMD0: CMD0: GO_IDLE_STATE — Reset all cards to idle
CMD2: CMD2: ALL_SEND_CID — Request CID from all cards
CMD5: CMD5: IO_SEND_OP_COND (SDIO)
CMD3_SD: CMD3: SEND_RELATIVE_ADDR (SD) or SET_RELATIVE_ADDR (MMC)
CMD8_MMC: CMD8 (MMC): SEND_EXT_CSD — read the 512-byte extended CSD register.
CMD11: CMD11: VOLTAGE_SWITCH — switch the bus to 1.8 V signaling.
CMD12: CMD12: STOP_TRANSMISSION — Stop read/write
CMD19: CMD19 (SD): SEND_TUNING_BLOCK — request a 64-byte tuning pattern.
CMD21: CMD21 (MMC): SEND_TUNING_BLOCK_HS200 — request the HS200 tuning pattern.
CMD38: CMD38: ERASE
CMD58: CMD58: READ_OCR — Read OCR register
MMC_TUNING_BLOCK_SIZE_4BIT: Tuning block size for MMC CMD21 over a 4-bit bus.
MMC_TUNING_BLOCK_SIZE_8BIT: Tuning block size for MMC CMD21 over an 8-bit bus.
SD_TUNING_BLOCK_SIZE: Tuning block size for SD CMD19 (always 64 bytes).

cmd1: CMD1: SEND_OP_COND (MMC)
cmd4: CMD4: SET_DSR — Program driver stage register
cmd6: CMD6: SWITCH_FUNC — Switch card function
cmd7: CMD7: SELECT/DESELECT CARD
cmd8: CMD8: SEND_IF_COND — Send interface condition (SD)
cmd9: CMD9: SEND_CSD — Get CSD register
cmd3_mmc: CMD3 MMC variant: arg contains the desired RCA
cmd6_high_speed: CMD6 helper: switch function group 1 to high speed (50 MHz, function 1).
cmd6_mmc_switch: CMD6 (MMC): SWITCH — modify a single byte of EXT_CSD.
cmd6_sd_access_mode: CMD6 helper: select SD access mode function in group 1.
cmd10: CMD10: SEND_CID — Get CID register
cmd13: CMD13: SEND_STATUS
cmd16: CMD16: SET_BLOCKLEN
cmd17: CMD17: READ_SINGLE_BLOCK
cmd18: CMD18: READ_MULTIPLE_BLOCK
cmd24: CMD24: WRITE_BLOCK
cmd25: CMD25: WRITE_MULTIPLE_BLOCK
cmd32: CMD32: ERASE_WR_BLK_START
cmd33: CMD33: ERASE_WR_BLK_END
cmd41: CMD41: SD_SEND_OP_COND — Send operating condition (SD only)
cmd52: CMD52: IO_RW_DIRECT
cmd53: CMD53: IO_RW_EXTENDED
cmd55: CMD55: APP_CMD — Next command is application-specific
cmd41_with_s18r: CMD41 variant that can request SD 1.8 V signaling through S18R.