x5045 c程序
//X5045.H
#ifndef X5045_h
#define X5045_h
#define WDT1_4 0x00;
#define WDT600 0x10;
#define WDT200 0x20;
#define WDTDIS 0x30;
//BIT
sbit B_CS5045=P2^0;
sbit B_SO5045=P2^1;
sbit B_SCLK5045=P2^3;
sbit B_SI5045=P2^2;
extern unsigned char data tcX5045;
void RstWDT(void);
void WrB5045(unsigned char,unsigned char) reentrant; //写入单字节数据
unsigned char RdB5045(unsigned char); //读出单字节数据
void byteout(unsigned char); //向5045输出单字节
void wip_chk(void); //等待5045结束内部写周期
unsigned char rdsr(void); //5045状态寄存器读出程序
unsigned char bytein(void); //从5045读出一字节数据
unsigned char readx(void); //读地址,地址位于100h
void wrsr(unsigned char); //5045状态寄存器写入程序
void wren(void); //写允许
void wrdi(void); //写禁止
#endif
/*
X5045/3 读写驱动
*/
#include <reg51.h>
#include "X5045.h"
//复位看门狗
void RstWDT()
{
B_CS5045=0;
B_CS5045=1;
}
//向X5045写入单字节数据
//输入：x,待写数据,address,写入数据的地址
void WrB5045(unsigned char x,unsigned char address) reentrant //数据,地址
{
wren();
B_SCLK5045=0;
B_CS5045=0;
byteout(0x2); //write
byteout(address);
byteout(x);
B_SCLK5045=0;
B_CS5045=1;
wip_chk();
wrdi();
}
//从X5045读入单字节数据
//输入：address,待读数据地址
//返回：读出的数据
unsigned char RdB5045(unsigned char address)
{
unsigned char data x;
B_SCLK5045=0;
B_CS5045=0;
byteout(0x3); //read 000h
byteout(address);
x=bytein();
B_SCLK5045=0;
B_CS5045=1;
return (x);
}
//向X5045输出单字节
void byteout(unsigned char x)
{
unsigned char data i,j;
j=128;
for(i=0;i<8;i++)
{
B_SCLK5045=0;
B_SI5045=x/j;
B_SCLK5045=1;
x%=j;
j/=2;
}
B_SI5045=0;
}
//等待X5045结束内部写周期
void wip_chk()
{
unsigned char data dat;
tcX5045=0;
do
{
dat=rdsr();
dat&=0x1;
if(tcX5045>=5) break;
}
while(dat);
}
//5045状态寄存器读出程序
unsigned char rdsr()
{
unsigned char data dat;
B_SCLK5045=0;
B_CS5045=0;
byteout(5);
dat=bytein();
B_SCLK5045=0;
B_CS5045=1;
return (dat);
}
//从X5045读出一字节数据
unsigned char bytein()
{
unsigned char data i,x;
x=0;
for (i=0;i<8;i++)
{
B_SO5045=1;
B_SCLK5045=1;
B_SCLK5045=0;
if (B_SO5045) x=x+x+1;
else x<<=1;
}
return(x);
}
//5045状态寄存器写入程序
void wrsr(unsigned char x)
{
wren();
B_SCLK5045=0;
B_CS5045=0;
byteout(1); //wrsr
byteout(x);
B_SCLK5045=0;
B_CS5045=1;
wip_chk();
wrdi();
}
//写允许
void wren()
{
B_SCLK5045=0;
B_CS5045=0;
byteout(6);
B_SCLK5045=0;
B_CS5045=1;
}
//写禁止
void wrdi()
{
B_SCLK5045=0;
B_CS5045=0;
byteout(4);
B_SCLK5045=0;
B_CS5045=1;
}
x5045c驱动程序
//*******************X5045 DRIVE**************************
//X5045.H
//#include <absacc.h>
//#include <intrins.h>
#include <reg52.h>
#define byte unsigned char
#define N_NOP _nop_();//_nop_();_nop_();_nop_();_nop_();
//////////////////////////////////////////////////////////////////
//x5045
//////////////////////////////////////////////////////////////////
//DEFINE
#define WRSR_INIT 0X01 //写状态寄存器指令;
#define WRITE_INIT 0X02 //写数据指令;
#define READ_INIT 0X03 //读数据指令;
#define WRDI_INIT 0X04 //禁止写操作指令;
#define RDSR_INIT 0X05 //读状态寄存器指令;
#define WREN_INIT 0X06 //允许写操作指令;
#define WAIT_TIMES 200 //等待时间常数;
sbit SO =P2^4;
sbit SI =P2^5;
sbit SCK =P2^6;
sbit CS =P2^7;
/////////////////////////////////////////////////////////////////
//函数声明;PROPERTY
void wren_cmd(void); //允许写操作指令函数;
void write(byte dt); //写一个字节数据函数;
byte read(void); //读一个字节数据函数;
byte read_state(void); //读状态控制字函数;
void write_state(byte dt); //写状态控制字函数;
void read_nbyte( bit bA8, //读n个字节数据函数;
byte adr_L,
byte n,
byte *adr);
void write_nbyte(bit bA8, //写n个字节数据函数;
byte adr_L,
byte n,
byte *adr);
void wait_end(byte run_TImes);//等待函数;
/////////////////////////////////////////////////////////////////
//函数定义;
//FOUNCTION
//enable before write data to x5045;
void wren_cmd(void)
{//向X5045写入允许写操作指令字;
CS=1;
SCK=0;
CS=0;
write(WREN_INIT);
CS=1;
SCK=0;
}
//make clk for send data
void write(byte dt)
{//向X5045写入一个字节数据
register byte i;
for(i=0;i<8;i++)
{
SCK=0;
//N_NOP;
SI=(bit)(dt & 0x80);//_|-
SCK=1;
//N_NOP;
dt=dt<<1;
}
SI=0;
}
//make clk for receive data
byte read(void)
{//从X5045读一个字节数据;
register byte i;
register byte dt=0;
SO=1;
for(i=0;i<8;i++)
{
SCK=1;
//N_NOP;
SCK=0;
//N_NOP;
dt=dt<<1;
if(SO)dt++;
}
return dt;
}
//---------------------------------------
//X5045状态控制字: |
//BIT: 7 6 5 4 3 2 1 0
|
// x x WD1 WD0 BL1 BL0 WEL WIP |
//WIP:0---正在写操作; |
// 1---写操作完成; |
//WEL:0---写使能锁存器复位; |
// 1---写使能锁存器置位; |
//BL1 BL0:
|
// 00--不保护; |
// 01--保护:01H--180H--1FFH; |
// 10--保护:100H--1FFH; |
// 11--保护:000H--1FFH; |
//WD1 WD0:
|
// 00--1.4秒; |
// 01--600毫秒; |
// 10--200毫秒; |
// 11--禁止看门狗; |
//---------------------------------------
//read state word from x5045;
byte read_state(void)
{//从X5045读状态控制字;
register byte dt;
wren_cmd();
CS=1;
SCK=0;
CS=0;
write(RDSR_INIT);
dt=read();
SCK=0;
CS=1;
return dt;
}
//write state word to x5045 before do somthing;
void write_state(byte dt)
{//向X5045写状态控制字;
wren_cmd();
CS=1;
SCK=0;
CS=0;
write(WRSR_INIT);
write(dt);
SCK=0;
CS=1;
wait_end(WAIT_TIMES);
}
//read n bytes from x5045;
void read_nbyte(bit bA8,//选择EPROM上半部分/下半部分
byte adr_L,//从EPROM中什么地址开始读;
byte n, //要读的字节数;
byte *adr)//所读的数据从什么地址开始存放;
{//从X5045读n个字节数据;
register byte i ;
CS=1;
SCK=0;
CS=0;
write(bA8?READ_INIT | 0x08 : READ_INIT);
write(adr_L);
for(i=0;i<n;i++)
{
*adr=read();
adr++;
}
SCK=0;
CS=1;
}
//write n bytes to x5045;
void write_nbyte(bit bA8,//选择EPROM上半部分/下半部分;
byte adr_L,//从EPROM中什么地址开始写;
byte n,//要写的字节数;
byte *adr)//从什么地址开始取数据写;
{//向X5045写n个字节数据;
register byte i ;
EA=0;
wren_cmd();
CS=1;
SCK=0;
CS=0;
write(bA8?WRITE_INIT | 0x08 : WRITE_INIT);
write(adr_L);
for(i=0;i<n;i++)
{
write(*adr);
adr++;
}
SCK=0;
CS=1;
wait_end(WAIT_TIMES);
EA=1;
}
// wait for be sure to complete
void wait_end(byte run_times)
{////等待向X5045写操作完成;
register byte dt=0;
while(run_times--)
{
dt=read_state();
if(dt&0x01==0)break;
}
}
//////////////////////////////////////////////////////////////////