#include?
#include//包含_nop_（）函數(shù)

//定義命令
#define?READ?0x03
#define?WRITE?0x02
#define?WREN?0x06
#define?WRDI?0x04
#define?RDSR?0x05
#define?WRSR?0x01
#define?PE?0x42
#define?SE?0xd8
#define?CE?0xc7
#define?RDID?0xab
#define?DPD?0xb9

//端口定義
sbit?SCK?=?P1^4;
sbit?MOSI?=?P1^5;
sbit?MISO?=?P1^6;
sbit?CS?=?P1^7;

//延時(shí)程序
void?delay_ms（int?n）
{
	int?i?j;
	for（i=0;i	for（j=0;j<1000;++j）;
}

//延時(shí)程序
void?delay_ns（void）?//延時(shí)>4us
{
	_nop_（）;//空指令
	_nop_（）;
	_nop_（）;
	_nop_（）;
}

//SPI寫一個(gè)byte
void?SPI_byte_write（const?char?*dat）
{
	char?tmp?=?*dat?i;
	
	for（i=0;i<8;++i）{
		SCK?=?0;
		MOSI?=?（bit）（tmp?>>?7）;?//先輸出高bit
		tmp?<<=?1;?//數(shù)據(jù)左移一位
		SCK?=?1;?//SCK為高發(fā)送bit
		delay_ns（）;?//延時(shí)防止芯片為響應(yīng)
	}
}

//SPI讀一個(gè)byte
void?SPI_byte_

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????871??2013-10-13?14:55??SPI\IIC.plg

?????文件?????222744??2013-10-13?20:55??SPI\Last?Loaded?SPI.DBK

?????文件???????7382??2017-05-11?13:48??SPI\SPI

?????文件???????2188??2013-10-13?23:08??SPI\SPI.c

?????文件?????222744??2013-10-13?21:17??SPI\SPI.DSN

?????文件???????1884??2017-05-11?13:48??SPI\SPI.hex

?????文件?????????54??2017-05-11?13:48??SPI\SPI.lnp

?????文件???????5586??2017-05-11?13:48??SPI\SPI.LST

?????文件??????10332??2017-05-11?13:48??SPI\SPI.M51

?????文件???????7776??2017-05-11?13:48??SPI\SPI.OBJ

?????文件????????162??2017-05-12?09:46??SPI\SPI.plg

?????文件????????911??2013-10-13?21:17??SPI\SPI.PWI

????.......?????55654??2017-05-12?09:46??SPI\SPI.uvopt

????.......?????13395??2013-10-13?14:59??SPI\SPI.uvproj

????.......?????55658??2017-05-11?14:58??SPI\SPI_uvopt.bak

????.......?????????0??2013-10-13?14:57??SPI\SPI_uvproj.bak

?????文件???????6376??2009-05-07?14:37??SPI\STARTUP.A51

?????文件??????14059??2017-05-11?13:48??SPI\STARTUP.LST

?????文件????????749??2017-05-11?13:48??SPI\STARTUP.OBJ

?????目錄??????????0??2017-05-12?09:46??SPI

-----------?---------??----------?-----??----

???????????????628525????????????????????20