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51单片机之lcd1602步进电机操控

includereg51h>51芯片管脚定义头文件includeintrinsh>内部包含延时函数_nop_();defineucharunsignedchardefin

#include //51芯片管脚界说头文件

#include //内部包括延时函数 _nop_();
#define uchar unsigned char
#define uint unsigned int
#define delayNOP(); {_nop_();_nop_();_nop_();_nop_();};
char code SST516[3] _at_ 0x003b;
uchar code FFW[8]={0xf1,0xf3,0xf2,0xf6,0xf4,0xfc,0xf8,0xf9};
uchar code REV[8]={0xf9,0xf8,0xfc,0xf4,0xf6,0xf2,0xf3,0xf1};
sbit K1 = P1^4; //运转与中止
sbit K2 = P1^5; //设定圈数
sbit K3 = P1^6; //方向转化
sbit K4 = P1^7; //速率调整
sbit BEEP = P3^7; //蜂鸣器
sbit LCD_RS = P2^0;
sbit LCD_RW = P2^1;
sbit LCD_EN = P2^2;
bit on_off=0; //运转与中止标志
bit direction=1; //方向标志
bit rate_dr=1; //速率标志
bit snum_dr=1; //圈数标志
uchar code cdis1[ ] = {” STEPPING MOTOR “};
uchar code cdis2[ ] = {“CONTROL PROCESS”};
uchar code cdis3[ ] = {” STOP “};
uchar code cdis4[ ] = {“NUM: RATE: “};
uchar code cdis5[ ] = {” RUNNING “};
uchar m,v=0,q=0;
uchar number=0,number1=0;
uchar snum=5,snum1=5; //预设定圈数
uchar rate=8; //预设定速率
uchar data_temp,data_temp1,data_temp2;
void delay(uint t)
{
uchar k;
while(t–)
{
for(k=0; k<125; k++)
{ }
}
}
void delayB(uchar x) //x*0.14MS
{
uchar i;
while(x–)
{
for (i=0; i<13; i++)
{ }
}
}
void beep()
{
uchar j;
for (j=0;j<100;j++)
{
delayB(4);
BEEP=!BEEP; //BEEP取反
}
BEEP=1; //封闭蜂鸣器
delay(170);
}
bit lcd_busy()
{
bit result;
LCD_RS = 0;
LCD_RW = 1;
LCD_EN = 1;
delayNOP();
result = (bit)(P0&0x80);
LCD_EN = 0;
return(result);
}
void lcd_wcmd(uchar cmd)
{
while(lcd_busy());
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 0;
_nop_();
_nop_();
P0 = cmd;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
}
void lcd_wdat(uchar dat)
{
while(lcd_busy());
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 0;
P0 = dat;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
}
void lcd_init()
{
delay(30);
lcd_wcmd(0x38); //16*2显现,5*7点阵,8位数据
delay(5);
lcd_wcmd(0x38);
delay(5);
lcd_wcmd(0x38);
delay(5);
lcd_wcmd(0x0c); //显现开,关光标
delay(5);
lcd_wcmd(0x06); //移动光标
delay(5);
lcd_wcmd(0x01); //铲除LCD的显现内容
delay(5);
}
void lcd_pos(uchar pos)
{
lcd_wcmd(pos | 0x80); //数据指针=80+地址变量
}
void LCD_init_DIS()
{
delay(10); //延时
lcd_init(); //初始化LCD
lcd_pos(0); //设置显现方位为榜首行的第1个字符
m = 0;
while(cdis1[m] != )
{ //显现字符
lcd_wdat(cdis1[m]);
m++;
}
lcd_pos(0x40); //设置显现方位为第二行第1个字符
m = 0;
while(cdis2[m] != )
{
lcd_wdat(cdis2[m]); //显现字符
m++;
}
delay(3000); //延时
lcd_pos(0); //设置显现方位为榜首行的第1个字符
m = 0;
while(cdis3[m] != )
{ //显现字符
lcd_wdat(cdis3[m]);
m++;
}
lcd_pos(0x40); //设置显现方位为第二行第1个字符
m = 0;
while(cdis4[m] != )
{
lcd_wdat(cdis4[m]); //显现字符
m++;
}
for(m=0;m<2;m++)
{
lcd_pos(0x0c+m); //显现方向符号
lcd_wdat(0x3e);
}
}

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