ADC0809 ISIS仿真
keil uvsion4文件目录：
12M晶振 89c52rc单片机
reg52.h
/*-------------------------------------------------------------------------- REG52.H Header file for generic 80C52 and 80C32 microcontroller. Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc. All rights reserved. --------------------------------------------------------------------------*/ #ifndef __REG52_H__ #define __REG52_H__ /* BYTE Registers */ sfr P0 = 0x80; sfr P1 = 0x90; sfr P2 = 0xA0; sfr P3 = 0xB0; sfr PSW = 0xD0; sfr ACC = 0xE0; sfr B = 0xF0; sfr SP = 0x81; sfr DPL = 0x82; sfr DPH = 0x83; sfr PCON = 0x87; sfr TCON = 0x88; sfr TMOD = 0x89; sfr TL0 = 0x8A; sfr TL1 = 0x8B; sfr TH0 = 0x8C; sfr TH1 = 0x8D; sfr IE = 0xA8; sfr IP = 0xB8; sfr SCON = 0x98; sfr SBUF = 0x99; /* 8052 Extensions */ sfr T2CON = 0xC8; sfr RCAP2L = 0xCA; sfr RCAP2H = 0xCB; sfr TL2 = 0xCC; sfr TH2 = 0xCD; /* BIT Registers */ /* PSW */ sbit CY = PSW^7; sbit AC = PSW^6; sbit F0 = PSW^5; sbit RS1 = PSW^4; sbit RS0 = PSW^3; sbit OV = PSW^2; sbit P = PSW^0; //8052 only /* TCON */ sbit TF1 = TCON^7; sbit TR1 = TCON^6; sbit TF0 = TCON^5; sbit TR0 = TCON^4; sbit IE1 = TCON^3; sbit IT1 = TCON^2; sbit IE0 = TCON^1; sbit IT0 = TCON^0; /* IE */ sbit EA = IE^7; sbit ET2 = IE^5; //8052 only sbit ES = IE^4; sbit ET1 = IE^3; sbit EX1 = IE^2; sbit ET0 = IE^1; sbit EX0 = IE^0; /* IP */ sbit PT2 = IP^5; sbit PS = IP^4; sbit PT1 = IP^3; sbit PX1 = IP^2; sbit PT0 = IP^1; sbit PX0 = IP^0; /* P3 */ sbit RD = P3^7; sbit WR = P3^6; sbit T1 = P3^5; sbit T0 = P3^4; sbit INT1 = P3^3; sbit INT0 = P3^2; sbit TXD = P3^1; sbit RXD = P3^0; /* SCON */ sbit SM0 = SCON^7; sbit SM1 = SCON^6; sbit SM2 = SCON^5; sbit REN = SCON^4; sbit TB8 = SCON^3; sbit RB8 = SCON^2; sbit TI = SCON^1; sbit RI = SCON^0; /* P1 */ sbit T2EX = P1^1; // 8052 only sbit T2 = P1^0; // 8052 only /* T2CON */ sbit TF2 = T2CON^7; sbit EXF2 = T2CON^6; sbit RCLK = T2CON^5; sbit TCLK = T2CON^4; sbit EXEN2 = T2CON^3; sbit TR2 = T2CON^2; sbit C_T2 = T2CON^1; sbit CP_RL2 = T2CON^0; #endif
intrins.h
/*-------------------------------------------------------------------------- INTRINS.H Intrinsic functions for C51. Copyright (c) 1988-2004 Keil Elektronik GmbH and Keil Software, Inc. All rights reserved. --------------------------------------------------------------------------*/ #ifndef __INTRINS_H__ #define __INTRINS_H__ extern void _nop_ (void); extern bit _testbit_ (bit); extern unsigned char _cror_ (unsigned char, unsigned char); extern unsigned int _iror_ (unsigned int, unsigned char); extern unsigned long _lror_ (unsigned long, unsigned char); extern unsigned char _crol_ (unsigned char, unsigned char); extern unsigned int _irol_ (unsigned int, unsigned char); extern unsigned long _lrol_ (unsigned long, unsigned char); extern unsigned char _chkfloat_(float); extern void _push_ (unsigned char _sfr); extern void _pop_ (unsigned char _sfr); #endif
delay.h
#ifndef __DELAY_H__ #define __DELAY_H__ #include "mystyle.h" //微秒级延时 void DelayUs2x(UINT8 t); //毫秒级延时 void DelayMs(UINT8 t); #endif
mystyle.h
#ifndef __MYSTYLE_H__ #define __MYSTYLE_H__ typedef unsigned char UINT8; typedef unsigned int UINT16; #endif
stdio.h
/*-------------------------------------------------------------------------- STDIO.H Prototypes for standard I/O functions. Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc. All rights reserved. --------------------------------------------------------------------------*/ #ifndef __STDIO_H__ #define __STDIO_H__ #ifndef EOF #define EOF -1 #endif #ifndef NULL #define NULL ((void *) 0) #endif #ifndef _SIZE_T #define _SIZE_T typedef unsigned int size_t; #endif #pragma SAVE #pragma REGPARMS extern char _getkey (void); extern char getchar (void); extern char ungetchar (char); extern char putchar (char); extern int printf (const char *, ...); extern int sprintf (char *, const char *, ...); extern int vprintf (const char *, char *); extern int vsprintf (char *, const char *, char *); extern char *gets (char *, int n); extern int scanf (const char *, ...); extern int sscanf (char *, const char *, ...); extern int puts (const char *); #pragma RESTORE #endif
lcd1602.h
#ifndef __LCD1602_H__ #define __LCD1602_H__ #include #include#include "mystyle.h" #include "delay.h" //LCD1602初始化 void LcdInit(void); //LCD1602判忙函数 //bit LcdCheckBusy(void); //LCD1602写命令 void LcdWriteCmd(UINT8 cmd); //LCD1602写数据 void LcdWriteByte(UINT8 Byte); //LCD1602清屏 void LcdClearScreen(void); //LCD1602写字符串 void LcdWriteString(UINT8 x,UINT8 y,UINT8 *s); #endif
delay.c
#include "delay.h"
/*
函数功能：进行微秒级延时
参数：UINT8 t 延时约2*t+5 微秒
返回值：无
*/
void DelayUs2x(UINT8 t)
{
while(--t);
}
/*
函数功能：进行毫秒级延时
参数：UINT8 t 延时约 t 毫秒
返回值：无
*/
void DelayMs(UINT8 t)
{
while(t--)
{
DelayUs2x(245);
DelayUs2x(245);
}
}
lcd1602.c
#include "lcd1602.h"
//#define CHECK_BUSY
#define RS_CLR LcdRS=0
#define RS_SET LcdRS=1
#define RW_CLR LcdRW=0
#define RW_SET LcdRW=1
#define EN_CLR LcdEN=0
#define EN_SET LcdEN=1
#define LCDPORT P0
sbit LcdRS = P2^4;
sbit LcdRW = P2^5;
sbit LcdEN = P2^6;
/*
函数功能：LCD1602判忙
参数：无
返回值：1 空闲 ; 0 忙
*/
/*
bit LcdCheckBusy(void)
{
#ifdef CHECK_BUSY
LCDPORT = 0XFF;
RS_CLR;
RW_SET;
EN_CLR;
_nop_();
EN_SET;
return (bit) (LCDPORT&0x80);
#else
return 0;
#endif
}
*/
/*
*/
void LcdInit()
{
//设置显示模式
LcdWriteCmd(0x38);
DelayMs(5);
LcdWriteCmd(0x38);
DelayMs(5);
LcdWriteCmd(0x38);
DelayMs(5);
LcdWriteCmd(0x38);
//显示关闭
LcdWriteCmd(0x80);
//显示清屏
LcdWriteCmd(0x01);
//设置 显示光标移动
LcdWriteCmd(0x06);
DelayMs(5);
//设置 显示开及光标
LcdWriteCmd(0x0c);
}
/*
函数功能：LCD1602写入命令
参数：UINT8 cmd
返回值：无
*/
void LcdWriteCmd(UINT8 cmd)
{
//while(LcdCheckBusy());
DelayMs(5);
RS_CLR;
RW_CLR;
EN_SET;
LCDPORT=cmd;
_nop_();
EN_CLR;
}
/*
函数功能：LCD1602写入一个字节数据
参数：UINT8 Byte
返回值：无
*/
void LcdWriteByte(UINT8 Byte)
{
//while(LcdCheckBusy());
DelayMs(5);
RS_SET;
RW_CLR;
EN_SET;
LCDPORT=Byte;
_nop_();
EN_CLR;
}
/*
函数功能：LCD1602清屏
参数：无
返回值：无
*/
void LcdClearScreen(void)
{
LcdWriteCmd(0x01);
DelayMs(5);
}
/*
函数功能：LCD1602写入字符串
参数： UINT8 x 写入第一个字节的X轴坐标
UINT8 y 写入第一个字节的Y轴坐标
UINT8 *s 写入字符串的首地址
返回值：无
*/
void LcdWriteString(UINT8 x,UINT8 y,UINT8 *s)
{
// y=0 表示第一行
if(0==y)
{
LcdWriteCmd(0x80+x);
}
// y=1 表示第二行
else
{
LcdWriteCmd(0xc0+x);
}
while(*s)
{
LcdWriteByte(*s);
s++;
}
}
ADC0809.c
#include"reg52.h"
#include "intrins.h"
#include #include #include#include sbit ST =P2^0; //转换启动信号 0：关闭转换 1：启动转换
sbit EOC=P2^1; //转换结束信号 0：转换还没有结束 1：转换已结束
sbit OE =P2^2; //输出允许信号 0：数据还不允许输出 1：数据已运行输出
sbit CLK=P2^3; //用于输出AD时钟信号
UINT16 all=0; //avr 用于保存最新一次的AD结果
float b=0.0;
//AD和定时器初始化
void ADinit();
void Timerinit();
//AD转换
UINT8 readAD();
void main()
{
//硬延时 300ms
//_nop_() 12个时钟周期（一个机器周期） 12M的晶振：1us
UINT16 k=60000;
char displaytemp[16];//定义显示区域临时存储数组
for(;k>0;k--)
{
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
}
//LCD1602初始化
LcdInit();
DelayMs(20); //延时有助于稳定
//AD初始化
ADinit();
//value[0]=(UINT16) 100*readAD();
//value[1]=(UINT16) 100*readAD();
//定时器初始化
Timerinit();
//清屏
LcdClearScreen();
LcdWriteString(1,0,"ruan jia you");
//LcdWriteString(1,1,"qiao li ting !");
while(1)
{
all=readAD();
b = all/51.0;
DelayMs(200);
DelayMs(200);
sprintf(displaytemp,"Volt:%7.4f ",b);
LcdWriteString(0,1,displaytemp);//显示第二行
DelayMs(200);
DelayMs(200);
}
}
/****************定时器初始化**********************/
void Timerinit()
{
ST=0; //关闭AD转换
OE=0; //关闭数据输出
}
/*********定时器及AD初始化***********/
void ADinit()
{
EA = 1; //开总中断
TMOD = 0x22;//设定定时器T0、T1工作方式为16位自动重装
TH0=216; //利用T0中断产生CLK信号
TL0=216;
ET0=1; //定时器0中断允许
TR0=1; //启动定时器T0
}
/***********T0中断服务程序 用于产生时钟信号************/
void timer0(void) interrupt 1
{
CLK=~CLK;
}
/***********AD转换函数**********/
UINT8 readAD()
{
UINT8 value=0;
ST=0;
DelayMs(1);
ST=1; //启动AD转换
DelayMs(1);
ST=0;
while(0==EOC);//等待数据输出允许信号
OE=1; //设置允许数据输出
value=P1;//保存输出数据
//数据处理结束
OE=0; //关闭数据输出
return value;
}