/**************************************************************************************
//------------------ MMC/SD-Card Reading and Writing implementation -------------------
//FileName     : mmc.c
//Function     : Connect AVR to MMC/SD 
//Created by   : ZhengYanbo
//Created date : 15/08/2005
//Version      : V1.2
//Last Modified: 19/08/2005
//Filesystem   : Read or Write MMC without any filesystem

//CopyRight (c) 2005 ZhengYanbo
//Email: Datazyb_007@163.com
****************************************************************************************/

#ifndef _MMC_H_
#define _MMC_H_

//If use MMC-Card then set to 1
#define	USE_MMC 		1       //EXPERIMENTAL NOT READY!!!! 
#define HW_SPI_Mode     1       //1:hardware SPI 0:software SPI

#define MMC_Write		    PORTA	//SPI port register
#define MMC_Read		    PINA    //Data PIN
#define MMC_Direction_REG	DDRA    //Direction register

#define SPI_DI			6	//-->MMC_DO_PIN
#define SPI_DO			1	//-->MMC_DI_PIN
#define SPI_Clock		4	//-->MMC_CLK_PIN
#define MMC_Chip_Select	0	//-->MMC_CS_PIN 
#define SPI_BUSY        7   //busy led

#define MMC_DO_PIN      MMC_Read.SPI_DI
#define MMC_DI_PIN      MMC_Write.SPI_DO
#define MMC_CLK_PIN     MMC_Write.SPI_Clock
#define MMC_CS_PIN      MMC_Write.MMC_Chip_Select

#define MMC_BUSY_LED    MMC_Write.SPI_BUSY //busy led for spi port

//--------------------------------------------------------------
// Hardwre SPI port define. Here for ATmega162
//--------------------------------------------------------------
#define HW_SPI_DO       5
#define HW_SPI_DI  		6
#define HW_SPI_SCK 		7
#define HW_SPI_SS  		4

#define HW_SPI_Direction_REG  DDRB
#define HW_SPI_PORT_REG       PORTB

#define SPI_SS_PIN      HW_SPI_PORT_REG.HW_SPI_SS

#define		SET_SCK()		SET_BIT(PORTB,PB5)
#define		CLR_SCK()		CLR_BIT(PORTB,PB5)
#define		SET_MOSI()		SET_BIT(PORTB,PB3)
#define		CLR_MOSI()		CLR_BIT(PORTB,PB3)

#define		SET_CS()		SET_BIT(PORTB,PB1)
#define		CLR_CS()		CLR_BIT(PORTB,PB1)
#define		PIN_MISO 		TEST_BIT(PINB,PB4)

//------------------------------------------------------------
// Error define
//-------------------------------------------------------------
#define INIT_CMD0_ERROR    	 0x01
#define INIT_CMD1_ERROR		0x02
#define WRITE_BLOCK_ERROR	0x03
#define READ_BLOCK_ERROR   	0x04 
//-------------------------------------------------------------
// data type
//-------------------------------------------------------------   
// this structure holds info on the MMC card currently inserted 

//---------------------------------------------------------------
// Prototypes
//---------------------------------------------------------------
void MMC_Port_Init(void);

unsigned char Read_Byte_MMC(void);
//unsigned char Read_Byte_MMC_Long(void);

void Write_Byte_MMC(unsigned char value);
//void Write_Byte_MMC_Long(unsigned char value);

unsigned char MMC_Read_Block(unsigned char *CMD,unsigned char *Buffer,unsigned int Bytes);
unsigned char MMC_Init(void);
unsigned char MMC_write_sector(unsigned long addr,unsigned char *Buffer);
//unsigned char MMC_read_sector(unsigned long addr,unsigned char *Buffer);
unsigned char Write_Command_MMC(unsigned char *CMD);
unsigned char Read_CSD_MMC(unsigned char *Buffer);
unsigned char Read_CID_MMC(unsigned char *Buffer);
void MMC_get_volume_info(void);
unsigned char MMC_Start_Read_Sector(unsigned long sector);
void MMC_get_data(unsigned int Bytes,unsigned char *buffer);
void MMC_get_data_LBA(unsigned long lba, unsigned int Bytes,unsigned char *buffer);
void MMC_GotoSectorOffset(unsigned long LBA,unsigned int offset);
void MMC_LBA_Close(void);

	
//set MMC_Chip_Select to high (MMC/SD-Card Invalid)
#define MMC_Disable() 	SET_CS()
//set MMC_Chip_Select to low (MMC/SD-Card Active)
#define MMC_Enable() 	CLR_CS()
 
#define nop() #asm("nop"); //asm nop defined in CVAVR

#endif //_MMC_H_