2006-07-14 04:42:37 +02:00
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/*
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io_sd_common.h
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By chishm (Michael Chisholm)
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Common SD card routines
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SD routines partially based on sd.s by Romman
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Copyright (c) 2006 Michael "Chishm" Chisholm
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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2006-07-11 - Chishm
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* Original release
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*/
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#ifndef IO_SD_COMMON_H
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#define IO_SD_COMMON_H
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#include "disc_io.h"
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/* SD commands */
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#define GO_IDLE_STATE 0
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#define ALL_SEND_CID 2
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#define SEND_RELATIVE_ADDR 3
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#define SELECT_CARD 7
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#define SEND_CSD 9
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#define STOP_TRANSMISSION 12
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#define SEND_STATUS 13
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#define GO_INACTIVE_STATE 15
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#define SET_BLOCKLEN 16
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#define READ_SINGLE_BLOCK 17
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#define READ_MULTIPLE_BLOCK 18
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#define WRITE_BLOCK 24
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2006-07-22 14:16:40 +02:00
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#define WRITE_MULTIPLE_BLOCK 25
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2006-07-14 04:42:37 +02:00
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#define APP_CMD 55
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/* SD App commands */
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#define SET_BUS_WIDTH 6
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#define SD_APP_OP_COND 41
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/* SD Data repsonses */
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#define SD_CARD_BUSY 0xff
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/* SD states */
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#define SD_STATE_IDLE 0 // Idle state, after power on or GO_IDLE_STATE command
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#define SD_STATE_READY 1 // Ready state, after card replies non-busy to SD_APP_OP_COND
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#define SD_STATE_IDENT 2 // Identification state, after ALL_SEND_CID
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#define SD_STATE_STBY 3 // Standby state, when card is deselected
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#define SD_STATE_TRAN 4 // Transfer state, after card is selected and ready for data transfer
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#define SD_STATE_DATA 5 //
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#define SD_STATE_RCV 6 // Receive data state
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#define SD_STATE_PRG 7 // Programming state
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#define SD_STATE_DIS 8 // Disconnect state
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#define SD_STATE_INA 9 // Inactive state, after GO_INACTIVE_STATE
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#define READY_FOR_DATA 1 // bit 8 in card status
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/*
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Calculate the CRC7 of a command and return it preshifted with
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an end bit added
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*/
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extern u8 _SD_CRC7(u8* data, int size);
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/*
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Calculate the CRC16 of a block of data, ready for transmission on
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four data lines at once
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*/
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extern void _SD_CRC16 (u8* buff, int buffLength, u8* crc16buff);
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#endif // define IO_SD_COMMON_H
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