單片機驅動帶編碼器直流電機源程序

ID:580896 · 發表于 2019-7-9 14:38

#include<STC12C5A60S2.h>
//單片機頭文件，儲存一些殊寄存器的地址聲明
#include<intrins.h>
//intrins頭文件儲存51編程中需要使用到空指令_nop_()、字符循環移位指令_crol_等
#include <stdio.h>
//stdio : "standard input & output"（標準輸入輸出）,C/C++頭文件，把多個編譯單元（.c或者.cpp文件）公用的內容，單獨放在一個文件里減少整體代碼尺寸
#define usint unsigned short int //符號短整型
#define uchar unsigned char //無符號字符型
#define uint unsigned int //無符號整型
#define VALID 0 //0
#define INVALID 1 //1
#define LCD_data P0 //LCD數據端口P0
sbit LCD_RS = P2^7; //LCD命令和數據控制位，1：寫數據位，0：寫命令
sbit LCD_RW = P2^6; //LCD讀寫控制位
sbit LCD_EN = P2^5; //LCD使能位
sbit IN1 = P2^0; //電機
sbit IN2 = P2^1;
sbit ENA = P2^3;
uchar code title2[] = {"電機轉速："};
uchar code ascii[] =
{0x31,0x32,0x33,0x41,0x34,0x35,0x36,0x42,0x37,0x38,0x39,0x43,0x2A,0x30,0x23,0x44}; //數字和常用字符的ascii碼
uint n = 0; //T0定時中斷響應次數
uint n_pwm = 0; //用于調節pwm占空比
uint c = 0; //外部計數中斷響應次數
uint flag_T0 = 0; //定時器T0溢出flag
uchar th = 0; //脈沖計數計算時的臨時變量高位
uchar tl = 0; //……………………………………………低位
uint num_pulse; //脈沖個數
void delay_1ms(uint z){ //延時函數1ms
uint x,y;
for(x = z; x > 0; x--)
for(y = 920; y > 0; y--);
}
void write_cmd(uchar cmd){ //LCD寫命令函數
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 0;
P0 = cmd;
delay_1ms(6);
LCD_EN = 1;
delay_1ms(6);
LCD_EN = 0;
}
void write_dat(uchar dat){ //LCD寫數據函數
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 0;
P0 = dat;
delay_1ms(5);
LCD_EN = 1;
delay_1ms(5);
LCD_EN = 0;
}
void lcd_pos(uchar X,uchar Y){ //X表示LCD的行數,Y表示LCD的列數
uchar pos;
if(X == 0){
X = 0x80;
}
else if(X == 1){
X = 0x90;
}
else if(X == 2){
X = 0x88;
}
else if (X == 3){
X = 0x98;
}
pos = X+Y ;
write_cmd(pos); //顯示地址
}
void lcd_init(){
uchar i = 0;
write_cmd(0x30); //基本指令操作
delay_1ms(5);
write_cmd(0x0C); //顯示開，關光標
delay_1ms(5);
write_cmd(0x01); //清除LCD的顯示內容
delay_1ms(5);
lcd_pos(0,0); //將LCD光標定位到第一行第一列
}
void pulse_dispaly(uint fe) //顯示脈沖個數
{
uchar i = 0;
uchar f[7];
for(i = 0; i < 7; i++)
f[i] = '0';
f[0] = ((fe)/100000) +0x30;//十萬位的數字
f[1] = ((fe)%100000)/10000 +0x30;//萬位的數字
f[2] = ((fe)%10000)/1000 +0x30;//千位的數字
f[3] = ((fe)%1000 )/100 +0x30;//百位的數字
f[4] = ((fe)%100 )/10 +0x30;//十位的數字
f[5] = ((fe)%10 ) +0x30;//個位的數字
f[6] = '\0';
i = 0;
lcd_pos(1,5); //將光標定位到第2行第6列開始顯示
while(f[i] != '\0'){
write_dat(f[i]);
i++;
}
}
void display_text(int pos, uchar *text){ //顯示一段字text、pos設置在第幾行開頭顯示
uchar j;
lcd_pos(pos,0);
while(text[j]!='\0'){
write_dat(text[j]);
j++;
}
j=0;
}
void INIT(){ //初始化函數
TMOD = 0X51; //定時器初始化0101_0001
TH0 = (65536-922)/256; //定時器初值（1ms），0.001s/(1.085*10^(-6))s=922
TL0 = (65536-922)%256;
TH1 = 0X00; //計數器初值
TL1 = 0x00;
ET0 = 1; //允許中斷T0
ET1 = 1;
EA = 1; //總中斷開放
TR0 = 1; //啟動T0
TR1 = 1; //啟動T1
IN2 = 0; //電機初始化
IN1 = 1;
ENA = 0;
}
void main(){
uchar i;
INIT();
lcd_init(); //LCD初始函數
display_text(1, title2); //在第2行開頭顯示 "電機轉速："
while(1){
if (flag_T0 == 1){ //1s
/*脈沖計數（電機轉速通過脈沖個數的方式輸出）*/
th = TH1; //用臨時變量讀取計數器數值
tl = TL1;
num_pulse = th*256 + tl; //計數器16進制轉10進制
TH1 = 0X00; //重新賦計數器的值
TL1 = 0x00;
pulse_dispaly(num_pulse); //循環調用顯示函數
th = 0;
tl = 0;
/*脈沖計數*/
flag_T0 = 0;
}
}
}
void interrupt_Timer0() interrupt 1 { //定時器中斷（1ms）
TR0 = 0;
TH0 = (65536-922)/256; //重新賦初值
TL0 = (65536-922)%256;
n++;
n_pwm++; //一個pwm脈沖周期為10ms，速度10檔可調
ENA = 1;
if (n_pwm > 10) //超過一個pwm周期
n_pwm = 1;
if (n_pwm <= 5) //占空比50%
IN1 = 1; //pwm高電平
else
IN1 = 0; //pwm低電平
if(n == 1000){ //計滿1s
flag_T0 = 1;
n = 0;
}
TR0 = 1;
}
void interrupt_Timer1() interrupt 3 { //計數器中斷
TR1 = 0;
TH1 = 0x00; //重新賦值
TL1 = 0x00;
TR1 = 1;
}