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Mọi người xem giúp mình sai ở đâu, mà đo điện áp toàn hiển thị bét nhè với
thanks mọi người, file mô phỏng mình đính kèm
thanks mọi người, file mô phỏng mình đính kèm
Code:
#include<htc.h>
#include"lcd.h"
#include<math.h>
#include <stdio.h>
#include <stdlib.h>
__CONFIG(INTIO & WDTDIS & PWRTEN & MCLREN & UNPROTECT & DUNPROTECT & BORDIS & IESODIS & FCMDIS & LVPDIS);
#define _XTAL_FREQ 4000000
//khai bao cac chan I/O
const char cgram_dat1[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x08,0x04,0x0e,0x01,0x0f,0x11,0x0f,0x00,//chu a huyen
0x04,0x0c,0x0a,0x0e,0x11,0x1e,0x0e,0x00,//chu ee sac
0x02,0x04,0x12,0x12,0x12,0x12,0x0C,0x00,//chu u sac
0x00,0x04,0x0A,0x0E,0x11,0x11,0x0E,0x00,//chu oo
0x99
};
const char cgram_dat2[]= {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//
0x00,0x0E,0x11,0x11,0x11,0x0E,0x04,0x00,//chu o nang 1
0x04,0x0A,0x0E,0x11,0x1E,0x10,0x0E,0x00,//chu ee 2
0x04,0x0A,0x0E,0x11,0x1E,0x0E,0x04,0x00,//chu ee nang 3
0x04,0x08,0x0E,0x01,0x0F,0x11,0x0F,0x00,//chu a sac 4
0x1e,0x11,0x11,0x1d,0x11,0x11,0x1e,0x00, // CHU DD 5
0x02,0x07,0x02,0x0E,0x12,0x13,0x0E,0x00,//chu dd 6
0x99 // Ma ket thuc chuoi la 99H,
};
const char cgram_dat3[]={
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x1C,0x12,0x11,0x39,0x11,0x11,0x12,0x1C,//chu DD
0x04,0x0A,0x0E,0x11,0x1E,0x0E,0x04,0x00,//chu ee nang
0x04,0x08,0x0E,0x01,0x0F,0x11,0x0F,0x00,//chu a sac
0x04,0x0C,0x0A,0x0E,0x01,0x0F,0x11,0x0F,//chu aa sac
0x04,0x0c,0x0a,0x0e,0x11,0x1e,0x0e,0x00, //chu ee sac
0x02,0x04,0x12,0x12,0x12,0x12,0x0C,0x00,//chu u sac
0x99
};
void nap_kitu(unsigned int x)
{
unsigned int i;
// Xu ly nap ma ky tu dac biet vao CGRAM.
i = 0; // Dia chi ky tu dac biet trong bo ma cgram_dat.
lcd_put_byte(0,0x40); // Lenh = 40H - Dat CGRAM co dia chi bat dau la 00H.
while(lcd_busy()); // Kiem tra LCD bao ban.
if(x == 1)
{
while(cgram_dat1[i]!=0x99) // Kiem tra nap xong du lieu cho cac ky tu dac biet,
{ // ky tu ket thuc chuoi la 99H.
lcd_put_byte(1,cgram_dat1[i]); // Ghi cac ma ky tu dac biet vao CGRAM theo dia chi.
while(lcd_busy()); // Kiem tra LCD bao ban.
i++;
}
}
if(x == 2)
{
while(cgram_dat2[i]!=0x99) // Kiem tra nap xong du lieu cho cac ky tu dac biet,
{ // ky tu ket thuc chuoi la 99H.
lcd_put_byte(1,cgram_dat2[i]); // Ghi cac ma ky tu dac biet vao CGRAM theo dia chi.
while(lcd_busy()); // Kiem tra LCD bao ban.
i++;
}
}
if(x == 3)
{
while(cgram_dat3[i]!=0x99) // Kiem tra nap xong du lieu cho cac ky tu dac biet,
{ // ky tu ket thuc chuoi la 99H.
lcd_put_byte(1,cgram_dat3[i]); // Ghi cac ma ky tu dac biet vao CGRAM theo dia chi.
while(lcd_busy()); // Kiem tra LCD bao ban.
i++;
}
}
}
//ham doc gia tri ADC
unsigned int read_ADC()
{
__delay_us(5); //Cho AD lay mau
GODONE=1; //Bat dau thuc hien chuyen doi
while(GODONE);
return(((unsigned int)ADRESH)<<8)|ADRESL;//ghep byte thap va byte cao
}
//ham chuyen doi adc hien thi lcd
void adc_lcd(unsigned int i)
{
char ng,tr,ch,dv;
ng=i/1000;
tr=(i-1000*ng)/100;
ch=(i-1000*ng-100*tr)/10;
dv=i-1000*ng-100*tr-ch*10;
//hien thi len lcd
lcd_gotoxy(6,1);
lcd_putc(ng+0x30);
lcd_gotoxy(7,1);
lcd_putc(tr+0x30);
lcd_gotoxy(8,1);
lcd_putc(ch+0x30);
lcd_gotoxy(9,1);
lcd_putc(dv+0x30);
}
//khoi tao adc
void adc_init()
{
ANSEL|=1<<3; //BAT BIT 3
TRISA3=1;
VCFG1=0;
VCFG0=0;
ADCS0=1;
ADCS1=1; //chon xung clock chuyen doi AD tu mach RC trong chip
//chon kenh AN3
CHS3=0;
CHS2=0;
CHS1=1;
CHS0=1;
ADFM=1;//dinh dang 10bit ket qua chuyen doi AD
ADON=1;//cho phep ADC hoat dong
}
void dodienap()
{
unsigned int val_adc,val_temp;
nap_kitu(2);
lcd_puts("\f \5o \6i\3n \4p \n Vin= (mV) ");
while(1)
{
val_adc=read_ADC();
val_temp=val_adc*5000/1024;
if(val_temp < 2500)
RC0=1;
else
RC0=0;
adc_lcd(val_temp);
}
}
void main()
{
ANSEL=0; //Cau hinh cac chan analog deu la digital I/O
ANSELH=0;
WPUB=0x0F; //Cho phep dien tro PULL UP tren chan RB0..3
TRISB=0b00000000;
RBPU=0;
TRISD=0b00000000;
TRISE=0;
TRISC0=0;
adc_init();
lcd_init();
dodienap();
}
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