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SD Card 的代码
sd卡的读操作.c
urlsigned char SD_read_sector(unsigned long address,unsigned char{buffer)
//SD卡读函数
unsigned char rddata[1],wrdata[1];
unsigned int j;
unsigned char cmdl7[]={0x51,0x00,0x00,0x00,0x00,0xff};//CM
sd卡的复位操作.c
unsigned char SD_Reset() //SD卡复位函数,进入SPI模式
{
unslgned Char i;
unsigned char rddata[1],wrdata[1];
unsigned char cmd0[]=(0x40,0x00,0x00,0x00,0x00,0x95);
CS_EN=1; //CS_EN置为高电平,屏蔽SPI内核的SS_n