标题:
写了一个驱动直流电机的程序,但是用1602显示转速的程序还不是很会,请大神帮忙检...
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作者:
请回答mh1999666
时间:
2018-6-24 16:32
标题:
写了一个驱动直流电机的程序,但是用1602显示转速的程序还不是很会,请大神帮忙检...
#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define out P1
sbit PWM=P3^7; //¶¨òåPWMÂö3åDÅoÅμÄêä3ö¶ËP3^7
sbit RS=P2^5; //òo¾§Î»±äá¿
sbit RW=P2^6; //òo¾§Î»±äá¿
sbit E=P2^7; //òo¾§Î»±äá¿
sbit s1=P2^0;
sbit s2=P2^1; //¿ØÖÆμç»úÕy·′×a
sbit s3=P2^4; //μç»úê1Äü¶Ë
sbit k1=P3^2; //¼óËù
sbit k2=P3^3; //¼õËù
sbit k3=P3^4; //Õy×a
sbit k4=P3^5; //·′×a
sbit k5=P3^6; //í£Ö1
uchar constant=20,flag=0;//¶¨òåὸö±äá¿
void delay(uint); //Ñóê±oˉêy
void lcd_initial(void); //LCD3õê¼»ˉoˉêy
void check_busy(void); //¼ì2éÃ|oˉêy
void write_command(uchar com); //D′Ãüáîoˉêy
void write_data(uchar dat); //D′êy¾Yoˉêy
void string(uchar ad,uchar *s); //ÏÔê¾×Ö·û′®oˉêy
void right(); //Õy×aoˉêy
void left(); //·′×aoˉêy
void stop(); //í£Ö1oˉêy
void choose(); //Ñ¡ÔñÕy·′×aoˉêy
int PWM;
void delay(uint j)
{
作者:
fengzi33325443
时间:
2018-6-24 16:32
/*-----------------------------------------------
名称:LCD1602
编写:shifang
日期:2009.5
修改:无
内容:通过标准程序静态显示字符
引脚定义如下:1-VSS 2-VDD 3-V0 4-RS 5-R/W 6-E 7-14 DB0-DB7 15-BLA 16-BLK
------------------------------------------------*/
#include<reg52.h> //包含头文件,一般情况不需要改动,头文件包含特殊功能寄存器的定义
#include<intrins.h>
sbit RS = P2^4; //定义端口
sbit RW = P2^5;
sbit EN = P2^6;
#define RS_CLR RS=0
#define RS_SET RS=1
#define RW_CLR RW=0
#define RW_SET RW=1
#define EN_CLR EN=0
#define EN_SET EN=1
#define DataPort P0
/*------------------------------------------------
uS延时函数,含有输入参数 unsigned char t,无返回值
unsigned char 是定义无符号字符变量,其值的范围是
0~255 这里使用晶振12M,精确延时请使用汇编,大致延时
长度如下 T=tx2+5 uS
------------------------------------------------*/
void DelayUs2x(unsigned char t)
{
while(--t);
}
/*------------------------------------------------
mS延时函数,含有输入参数 unsigned char t,无返回值
unsigned char 是定义无符号字符变量,其值的范围是
0~255 这里使用晶振12M,精确延时请使用汇编
------------------------------------------------*/
void DelayMs(unsigned char t)
{
while(t--)
{
//大致延时1mS
DelayUs2x(245);
DelayUs2x(245);
}
}
/*------------------------------------------------
判忙函数
------------------------------------------------*/
bit LCD_Check_Busy(void)
{
DataPort= 0xFF;
RS_CLR;
RW_SET;
EN_CLR;
_nop_();
EN_SET;
return (bit)(DataPort & 0x80);
}
/*------------------------------------------------
写入命令函数
------------------------------------------------*/
void LCD_Write_Com(unsigned char com)
{
while(LCD_Check_Busy()); //忙则等待
RS_CLR;
RW_CLR;
EN_SET;
DataPort= com;
_nop_();
EN_CLR;
}
/*------------------------------------------------
写入数据函数
------------------------------------------------*/
void LCD_Write_Data(unsigned char Data)
{
while(LCD_Check_Busy()); //忙则等待
RS_SET;
RW_CLR;
EN_SET;
DataPort= Data;
_nop_();
EN_CLR;
}
/*------------------------------------------------
清屏函数
------------------------------------------------*/
void LCD_Clear(void)
{
LCD_Write_Com(0x01);
DelayMs(5);
}
/*------------------------------------------------
写入字符串函数
------------------------------------------------*/
void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s)
{
if (y == 0)
{
LCD_Write_Com(0x80 + x); //表示第一行
}
else
{
LCD_Write_Com(0xC0 + x); //表示第二行
}
while (*s)
{
LCD_Write_Data( *s);
s ++;
}
}
/*------------------------------------------------
写入字符函数
------------------------------------------------*/
void LCD_Write_Char(unsigned char x,unsigned char y,unsigned char Data)
{
if (y == 0)
{
LCD_Write_Com(0x80 + x);
}
else
{
LCD_Write_Com(0xC0 + x);
}
LCD_Write_Data( Data);
}
/*------------------------------------------------
初始化函数
------------------------------------------------*/
void LCD_Init(void)
{
LCD_Write_Com(0x38); /*显示模式设置*/
DelayMs(5);
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
LCD_Write_Com(0x08); /*显示关闭*/
LCD_Write_Com(0x01); /*显示清屏*/
LCD_Write_Com(0x06); /*显示光标移动设置*/
DelayMs(5);
LCD_Write_Com(0x0C); /*显示开及光标设置*/
}
/*------------------------------------------------
主函数
------------------------------------------------*/
void main(void)
{
LCD_Init();
LCD_Clear();//清屏
while (1)
{
LCD_Write_Char(7,0,'o');
LCD_Write_Char(8,0,'k');
LCD_Write_String(1,1,"222222");
while(1);
}
}
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