mmc.h

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// MMC Hardware connections
#define MMC_PORT        PORTE
#define MMC_PIN         PINE
#define MMC_DDR         DDRE
#define MMC_CS          PE4
#define SPI_PORT        PORTB
#define SPI_DDR         DDRB
#define SPI_SS          PB0
#define SPI_SCK         PB1
#define SPI_MOSI        PB2
#define SPI_MISO        PB3

// MMC commands
#define MMC_GO_IDLE_STATE               0
#define MMC_SEND_OP_COND                1
#define MMC_SEND_CSD                    9
#define MMC_SEND_CID                    10
#define MMC_SEND_STATUS                 13
#define MMC_SET_BLOCKLEN                16
#define MMC_READ_SINGLE_BLOCK           17
#define MMC_WRITE_BLOCK                 24
#define MMC_PROGRAM_CSD                 27
#define MMC_SET_WRITE_PROT              28
#define MMC_CLR_WRITE_PROT              29
#define MMC_SEND_WRITE_PROT             30
#define MMC_TAG_SECTOR_START            32
#define MMC_TAG_SECTOR_END              33
#define MMC_UNTAG_SECTOR                34
#define MMC_TAG_ERASE_GROUP_START       35
#define MMC_TAG_ERARE_GROUP_END         36
#define MMC_UNTAG_ERASE_GROUP           37
#define MMC_ERASE                       38
#define MMC_CRC_ON_OFF                  59

// R1 Response bit-defines
#define MMC_R1_BUSY                             0x80
#define MMC_R1_PARAMETER                        0x40
#define MMC_R1_ADDRESS                          0x20
#define MMC_R1_ERASE_SEQ                        0x10
#define MMC_R1_COM_CRC                          0x08
#define MMC_R1_ILLEGAL_COM                      0x04
#define MMC_R1_ERASE_RESET                      0x02
#define MMC_R1_IDLE_STATE                       0x01

// Data Start tokens
#define MMC_STARTBLOCK_READ                     0xFE
#define MMC_STARTBLOCK_WRITE                    0xFE
#define MMC_STARTBLOCK_MWRITE                   0xFC

// Data Stop tokens
#define MMC_STOPTRAN_WRITE                      0xFD

// Data Error Token values
#define MMC_DE_MASK                             0x1F
#define MMC_DE_ERROR                            0x01
#define MMC_DE_CC_ERROR                         0x02
#define MMC_DE_ECC_FAIL                         0x04
#define MMC_DE_OUT_OF_RANGE                     0x04
#define MMC_DE_CARD_LOCKED                      0x04

// Data Response Token values
#define MMC_DR_MASK                             0x1F
#define MMC_DR_ACCEPT                           0x05
#define MMC_DR_REJECT_CRC                       0x0B
#define MMC_DR_REJECT_WRITE_ERROR               0x0D

#ifndef MMC_C

#include "types.h"
extern uint8 mmc_sbuf[];
extern uint8 mmc_scratch[]; 

//
// Prototypes
//
void SpiInit(void);                             // init AVR HW
uint8 SpiByte(unsigned char byte);              // xmit/recv over SPI

uint8 MMC_Reset(void);                          // init mmc
uint16 MMC_Check(void);                         // check status
uint8 MMC_Read(uint32 lba);

// ... removed to save space
//uint8 MMC_Write(uint32 lba);
//uint8 MMC_Identify(void);             // get CID data
//uint8 MMC_CardType(void);             // get CSD data
//uint32 MMC_Capacity(void);            // get capacity in Bytes
//uint8 MMC_Name(void);                 // get MMC Name
//uint8 MMC_WriteProtect(uint8 set);
//void MMC_Flush(void);



BOOL MMC_Detect(void);
#endif