Module proto

Constants from the SD Specifications

Based on SdFat, under the following terms:

Copyright (c) 2011-2018 Bill Greiman This file is part of the SdFat library for SD memory cards.

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Structs

CsdV1

Card Specific Data, version 1

CsdV2

Card Specific Data, version 2

Enums

Csd

Card Specific Data

Constants

ACMD23

Pre-erased before writing

ACMD41

SD_SEND_OP_COMD - Sends host capacity support information and activates the card’s initialization process

CMD0

GO_IDLE_STATE - init card in spi mode if CS low

CMD8

SEND_IF_COND - verify SD Memory Card interface operating condition.*/

CMD9

SEND_CSD - read the Card Specific Data (CSD register)

CMD12

STOP_TRANSMISSION - end multiple block read sequence

CMD13

SEND_STATUS - read the card status register

CMD17

READ_SINGLE_BLOCK - read a single data block from the card

CMD18

READ_MULTIPLE_BLOCK - read a multiple data blocks from the card

CMD24

WRITE_BLOCK - write a single data block to the card

CMD25

WRITE_MULTIPLE_BLOCK - write blocks of data until a STOP_TRANSMISSION

CMD55

APP_CMD - escape for application specific command

CMD58

READ_OCR - read the OCR register of a card

CMD59

CRC_ON_OFF - enable or disable CRC checking

DATA_RES_ACCEPTED

write data accepted token

DATA_RES_MASK

mask for data response tokens after a write block operation

DATA_START_BLOCK

start data token for read or write single block*/

ERROR_OK

Card indicates last operation was a success

R1_IDLE_STATE

status for card in the idle state

R1_ILLEGAL_COMMAND

status bit for illegal command

R1_READY_STATE

status for card in the ready state

STOP_TRAN_TOKEN

stop token for write multiple blocks*/

WRITE_MULTIPLE_TOKEN

start data token for write multiple blocks*/

Functions

crc7

Perform the 7-bit CRC used on the SD card

crc16

Perform the X25 CRC calculation, as used for data blocks.