ok..........................
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头像被屏蔽
· 2014-5-25 00:02:58
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学习.。。。。。。。。。。。。。。。。。。。。。。。。
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多谢分享 
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谢谢分享。。 
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头像被屏蔽
· 2015-6-3 21:20:55
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学习学习
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谢谢分享
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/USE ONE KEY TO TEST 5 CHANNELS VOLTAGE
//USE PIC16F74-DIP LCD12864
//USE 16MHZ CRYSTAL
#include
#define uchar unsigned char
#define uint unsigned int
#define PORT_LCD_DAT PORTB
#define TRIS_LCD_DAT TRISB
#define _XTAL_FREQ 16000000UL//16MHZ OSC,CODE PERIOD 0.25US PER
#define RS RD7//LCD PORT CONTROLL
#define E RD6
#define beep RE2
#define key0 RD1
#define key1 RD0
#define key2 RC3
#define key3 RC2
//const uchar table[]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39};//0-9 ASCII CODE
const uchar table[]="0123456789";
uint voltage;
uint result;
uchar adflag=1;
void delay(uint);
__CONFIG(0X0002);//HS CRYSTAL
void delay(uint z) //DELAY FUNCTION
{
uint x,y;
for(x=z;x>0;x--)
for(y=100;y>0;y--);
}
void write_lcd_command(uchar cmd)//LCD WRITE COMMAND FUNCTIONS
{
RD6=RD7=TRISD6=TRISD7=0;//SETTING PORT AS WRITE DIRECTION
RS=0;
TRIS_LCD_DAT=0X00;
PORT_LCD_DAT=cmd;
delay(6);
E=1;delay(6);E=0;
}
void write_lcd_data(uchar dat)//LCD WRITE DATA FUNCTIONS
{
RS=1;
TRIS_LCD_DAT=0X00;//SETTING PORT AS WRITE DIRECTION
PORT_LCD_DAT=dat;
delay(6);
E=1;delay(6);E=0;
}
void lcd_initialize()//LCD INITALIZTIONS
{
write_lcd_command(0x30);
write_lcd_command(0x01);
write_lcd_command(0x06);
write_lcd_command(0x0f);
}
void lcd_showstring(uchar r,uchar c,char *str)
{
uchar i=0;
if(r==0) write_lcd_command(0x80|c);//LCD NO.1
else if(r==1) write_lcd_command(0x90|c);//LCD NO.2
else if(r==2) write_lcd_command(0x88|c);//LCD N0.3
else if(r==3) write_lcd_command(0x98|c);//LCD NO.4
for(i=0;i<16&&str[i]!=' ';i++)//SIXTEEN WORDS OR EIGHT CHINESE WORDS
write_lcd_data(str[i]);
}
void adc_convert()//ANALOG TO DIGITAL CONVERT PART
{
if(key0==0)//RECORD THE NUMBERS OF KEY DOWN
{
adflag++;
if(adflag==4)//TOTAL TO 5,THEN RETURN 1
adflag=1;
while(key0==0);//SELECT THE AD CHANNEL
}
if(adflag==1)//CHANNEL 0
{ CHS2=CHS1=CHS0=0;lcd_showstring(1,0,(uchar*)"channel 0");}
else if(adflag==2)//CHANNEL 1
{CHS2=CHS1=0;CHS0=1;lcd_showstring(1,0,(uchar*)"channel 1");}
else if(adflag==3)//CHANNEL 2
{CHS2=0;CHS1=1;CHS0=0;lcd_showstring(1,0,(uchar*)"channel 2");}
else if(adflag==4)//CHANNEL 3
{CHS2=0;CHS1=1;CHS0=1;}
else if(adflag==5)//CHANNEL 4
{CHS2=1;CHS1=0;CHS0=0;}
__delay_ms(5);
ADGO=1;while(ADGO);
result=ADRES;
}
void display()
{
write_lcd_command(0x80);
write_lcd_data(table[result/100%100]);
write_lcd_data(table[result/10%10]);
write_lcd_data(table[result%10]);
lcd_showstring(2,0,(uchar*)"voltage test");
lcd_showstring(3,0,(uchar*)"by bright");
}
void main()
{
PCFG2=0;PCFG1=0;PCFG0=0;
ADCS1=0;ADCS0=1;
TRISB=0X00;
PORTB=0X00;
TRISD=0XFF;
PORTD=0XFF;
ADON=1;
GIE=1;
lcd_initialize();
__delay_ms(700);
while(1)
{
adc_convert();
display();
}
}
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学习一下,学习一下,学习一下,学习一下,学习一下啊,谢啊!
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