/************************************************************** * ARMSYS-P, LiYuTai elec. * * .h file for mmc functions ************************************************************/#include "../Target/44b.h"#include "../Target/44blib.h"#define CLR_SPICLK rPDATF&=~(1<<3);//rPDATF&=~(1<<8);#define SET_SPICLK rPDATF|=(1<<3);//rPDATF|=(1<<8); #define CLR_SPITXD rPDATG&=~(1<<1);//rPDATF&=~(1<<5);#define SET_SPITXD rPDATG|=(1<<1);//rPDATF|=(1<<5);#define READ_SPIRXD ((rPDATF&(1<<4))<<3);//注意這里得出的結果必須放在第7位！MSB #define mmc_select()     rPDATB &= ~(1<<10);// rPDATE&=0xDF;#define mmc_deselect()   rPDATB |= (1<<10); // rPDATE|=0x20;void mcu_io_init_formmc(void){//GPG1:OutputTXD; GPF4:InputRXD;GPF3:CLKoutput;GPB10(nGCS5):CS;	rPCONF&=~((3<<6)|(3<<8));    rPCONF|=(1<<6)|(0<<8);	rPUPF&=~(1<<3);//|(1<<4));		rPCONG&=~(3<<2);	rPCONG|=(1<<2);	//rPUPG&=~(1<<1);			rPCONB &= ~(1<<10);}unsigned char spi_byte(unsigned char dat){	int i,tmp,tmptxd, tmprxd=0;	tmptxd=dat;			for(i=0;i<8;i++)		{              CLR_SPICLK;			  			if(tmptxd&(0x80>>i))//MSB			{				SET_SPITXD;			}			else			{			    CLR_SPITXD;			}			              tmp=READ_SPIRXD;	       tmprxd|=tmp>>i;				SET_SPICLK;		}	return tmprxd;}		/************************** * mmc functions *************************/int mmc_init(void);int mmc_command(unsigned char, unsigned int, unsigned int );unsigned char mmc_get_r1(void);int mmc_get_r2(void);int mmc_print_card_info(void);int mmc_read_sector(unsigned long int, unsigned char *);int mmc_write_sector(unsigned long int, unsigned char *);unsigned char sdi_byte(unsigned char);void sdmmc_test(void);