main.#3

本源码是c8051f330使用spi口在spi模式下读写SD卡

//主程序

#include "stdarg.h"
#include "stdio.h"
#include "inc.h"





//extern xdata uint8 cidlen = 16;		  		 //len取值0~MAX
//extern xdata uint8 csdlen = 16;
//xdata uint8 sendbuf[MAX] ={1,2,3};
//xdata uint8 recbuf[MAX] ={0,0,0};
uint32 blockaddr = 0;

main()
{

//	uint8 i;
	
	uint8 byte = 0x40;
	uint8 rec = 0x20;


	Init_Device();		 //初始化MCU
	
		


	sd_init();			 //初始化SD卡进入SPI模式

											//延时至少74个CLK

										  
	while(1)
	{
		
	sd_write_single_block(blockaddr);

	sd_read_single_block(blockaddr);
		



	}
}