電機(jī)功能測(cè)量：

1、測(cè)量直流電機(jī)的電壓電流，計(jì)算功率

2、設(shè)計(jì)采樣電路，通過(guò)AD芯片測(cè)量參數(shù)

3、LCD顯示測(cè)量結(jié)果

4、按鍵控制電機(jī)轉(zhuǎn)速

#include"LCD.H"

void write_com(unsigned char com) //寫(xiě)命令
{
	RS_CLR;
	RW_CLR;
	P0=com;
	DelayMs(3);
	EN_SET;
	DelayMs(3);
	EN_CLR;
}

void write_data(unsigned char date)	 //寫(xiě)一個(gè)字符
{
	RS_SET;
	RW_CLR;
	P0=date;
	DelayMs(3);
	EN_SET;
	DelayMs(3);
	EN_CLR;
}

void init()			//初始化
{
	write_com(0x38);
	write_com(0x0c);
	write_com(0x06);
	write_com(0x01);
}

/*------------------------------------------------ 
              寫(xiě)入字符串函數(shù)
------------------------------------------------*/
void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s) 
{     
 	if (y == 0) 
 	{     
	 	write_com(0x80 + x);     
 	}
 	else 
 	{     
 		write_com(0xC0 + x);     
 	}        
 	while (*s) 
 	{     
 		write_data( *s);     
 		s ++;     
 	}
}

#include"LCD.H"

void write_com(unsigned char com) //寫(xiě)命令
{
	RS_CLR;
	RW_CLR;
	P0=com;
	DelayMs(3);
	EN_SET;
	DelayMs(3);
	EN_CLR;
}

void write_data(unsigned char date)	 //寫(xiě)一個(gè)字符
{
	RS_SET;
	RW_CLR;
	P0=date;
	DelayMs(3);
	EN_SET;
	DelayMs(3);
	EN_CLR;
}

void init()			//初始化
{
	write_com(0x38);
	write_com(0x0c);
	write_com(0x06);
	write_com(0x01);
}

/*------------------------------------------------ 
              寫(xiě)入字符串函數(shù)
------------------------------------------------*/
void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s) 
{     
 	if (y == 0) 
 	{     
	 	write_com(0x80 + x);     
 	}
 	else 
 	{     
 		write_com(0xC0 + x);     
 	}        
 	while (*s) 
 	{     
 		write_data( *s);     
 		s ++;     
 	}
}

?