| 0,0 → 1,106 |
|---|
| // ************************************************************************************* |
| // |
| // Filename: mmc.h: |
| // Declarations for Communication with the MMC (see mmc.c) in unprotected SPI mode. |
| // |
| // Version 1.1 |
| // added ul declaration in macros mmcWriteSector and mmcReadSector |
| // ************************************************************************************* |
| |
| #ifndef _MMCLIB_H |
| #define _MMCLIB_H |
| |
| |
| // macro defines |
| #define HIGH(a) ((a>>8)&0xFF) // high byte from word |
| #define LOW(a) (a&0xFF) // low byte from word |
| |
| #define MMC_SECTOR_SIZE 512ul |
| |
| // Tokens (necessary because at NPO/IDLE (and CS active) only 0xff is on the data/command line) |
| #define MMC_START_DATA_BLOCK_TOKEN 0xfe // Data token start byte, Start Single Block Read |
| #define MMC_START_DATA_MULTIPLE_BLOCK_READ 0xfe // Data token start byte, Start Multiple Block Read |
| #define MMC_START_DATA_BLOCK_WRITE 0xfe // Data token start byte, Start Single Block Write |
| #define MMC_START_DATA_MULTIPLE_BLOCK_WRITE 0xfc // Data token start byte, Start Multiple Block Write |
| #define MMC_STOP_DATA_MULTIPLE_BLOCK_WRITE 0xfd // Data toke stop byte, Stop Multiple Block Write |
| |
| |
| // an affirmative R1 response (no errors) |
| #define MMC_R1_RESPONSE 0x00 |
| |
| |
| // this variable will be used to track the current block length |
| // this allows the block length to be set only when needed |
| // unsigned long _BlockLength = 0; |
| |
| // error/success codes |
| #define MMC_SUCCESS 0x00 |
| #define MMC_BLOCK_SET_ERROR 0x01 |
| #define MMC_RESPONSE_ERROR 0x02 |
| #define MMC_DATA_TOKEN_ERROR 0x03 |
| #define MMC_INIT_ERROR 0x04 |
| #define MMC_CRC_ERROR 0x10 |
| #define MMC_WRITE_ERROR 0x11 |
| #define MMC_OTHER_ERROR 0x12 |
| #define MMC_TIMEOUT_ERROR 0xFF |
| |
| |
| // commands: first bit 0 (start bit), second 1 (transmission bit); CMD-number + 0ffsett 0x40 |
| #define MMC_GO_IDLE_STATE 0x40 //CMD0 |
| #define MMC_SEND_OP_COND 0x41 //CMD1 |
| #define MMC_READ_CSD 0x49 //CMD9 |
| #define MMC_SEND_CID 0x4a //CMD10 |
| #define MMC_STOP_TRANSMISSION 0x4c //CMD12 |
| #define MMC_SEND_STATUS 0x4d //CMD13 |
| #define MMC_SET_BLOCKLEN 0x50 //CMD16 Set block length for next read/write |
| #define MMC_READ_SINGLE_BLOCK 0x51 //CMD17 Read block from memory |
| #define MMC_READ_MULTIPLE_BLOCK 0x52 //CMD18 |
| #define MMC_CMD_WRITEBLOCK 0x54 //CMD20 Write block to memory |
| #define MMC_WRITE_BLOCK 0x58 //CMD24 |
| #define MMC_WRITE_MULTIPLE_BLOCK 0x59 //CMD25 |
| #define MMC_WRITE_CSD 0x5b //CMD27 PROGRAM_CSD |
| #define MMC_SET_WRITE_PROT 0x5c //CMD28 |
| #define MMC_CLR_WRITE_PROT 0x5d //CMD29 |
| #define MMC_SEND_WRITE_PROT 0x5e //CMD30 |
| #define MMC_TAG_SECTOR_START 0x60 //CMD32 |
| #define MMC_TAG_SECTOR_END 0x61 //CMD33 |
| #define MMC_UNTAG_SECTOR 0x62 //CMD34 |
| #define MMC_TAG_EREASE_GROUP_START 0x63 //CMD35 |
| #define MMC_TAG_EREASE_GROUP_END 0x64 //CMD36 |
| #define MMC_UNTAG_EREASE_GROUP 0x65 //CMD37 |
| #define MMC_EREASE 0x66 //CMD38 |
| #define MMC_READ_OCR 0x67 //CMD39 |
| #define MMC_CRC_ON_OFF 0x68 //CMD40 |
| |
| |
| // mmc init |
| char mmcInit(void); |
| |
| // check if MMC card is present |
| char mmcPing(void); |
| |
| // send command to MMC |
| void mmcSendCmd (const char cmd, unsigned long data, const char crc); |
| |
| // set MMC in Idle mode |
| char mmcGoIdle(); |
| |
| // set MMC block length of count=2^n Byte |
| char mmcSetBlockLength (const unsigned long); |
| |
| // read a size Byte big block beginning at the address. |
| char mmcReadBlock(const unsigned long address, const unsigned long count, unsigned char *pBuffer); |
| #define mmcReadSector(sector, pBuffer) mmcReadBlock(sector*MMC_SECTOR_SIZE, MMC_SECTOR_SIZE, pBuffer) |
| |
| // write a size Byte big block beginning at the (aligned) address |
| char mmcWriteBlock (const unsigned long address, const unsigned long count, unsigned char *pBuffer); |
| #define mmcWriteSector(sector, pBuffer) mmcWriteBlock(sector*MMC_SECTOR_SIZE, MMC_SECTOR_SIZE, pBuffer) |
| |
| // Read Register arg1 with Length arg2 (into the buffer) |
| char mmcReadRegister(const char, const unsigned char, unsigned char *pBuffer); |
| |
| // Read the Card Size from the CSD Register |
| unsigned long mmcReadCardSize(void); |
| |
| |
| #endif /* _MMCLIB_H */ |