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| // LCD module connections
sbit LCD_RS at LATD0_bit;
sbit LCD_EN at LATD1_bit;
sbit LCD_D4 at LATD4_bit;
sbit LCD_D5 at LATD5_bit;
sbit LCD_D6 at LATD6_bit;
sbit LCD_D7 at LATD7_bit;
sbit LCD_RS_Direction at TRISD0_bit;
sbit LCD_EN_Direction at TRISD1_bit;
sbit LCD_D4_Direction at TRISD4_bit;
sbit LCD_D5_Direction at TRISD5_bit;
sbit LCD_D6_Direction at TRISD6_bit;
sbit LCD_D7_Direction at TRISD7_bit;
// End LCD module connections
float adcVal;
unsigned char lcdData[23];
void readADC() {
ADCON0.GO = 1; //Start conversion
while(ADCON0.GO); //Wait till conversion finishes
adcVal = (ADRESH << 8) | ADRESL; //Read ADC result into adcVal
}
void main() {
TRISA = 0xFF;
TRISB = 0x00;
TRISC = 0x00;
TRISD = 0x00;
PORTA = 0x00;
PORTB = 0x00;
PORTC = 0x00;
PORTD = 0x00;
LATA = 0x00;
LATB = 0x00;
LATC = 0x00;
LATD = 0x00;
CMCON = 0x07;
CVRCON = 0x00;
LCD_Init();
LCD_Cmd(_LCD_CURSOR_OFF);
LCD_Cmd(_LCD_CLEAR);
LCD_Out(1,1,"Multiple ADC");
while(1){
ADCON0 = 0b00000001; //Select AN0, LM35
ADCON1 = 0b00011010; //Vref+ used
ADCON2 = 0b10101101; //12 TAD, 16 TOSC
Delay_ms(10); //Delay for ADC stabilization
readADC(); //Read ADC
adcVal = adcVal / 6.413332; //Convert ADC value
FloatToStr(adcVal, lcdData); //Convert to string
LCD_Out(2,1,lcdData); //Display adc value on LCD
ADCON0 = 0b00000101; //Select AN1, Load Cell
ADCON1 = 0b00001010; //Vref disabled, AVdd and AVss are used
ADCON2 = 0b10101101; //12 TAD, 16 TOSC
Delay_ms(10); //Delay for ADC stabilization
readADC(); //Read ADC
adcVal = adcVal * 5.0 / 1023.0; //Convert ADC value
FloatToStr(adcVal, lcdData); //Convert to string
LCD_Out(3,1,lcdData); //Display adc value on LCD
ADCON0 = 0b00001001; //Select AN2, MQ-6
ADCON1 = 0b00001010; //Vref disabled, AVDD and AVSS are used
ADCON2 = 0b10101101; //12 TAD, 16 TOSC
Delay_ms(10); //Delay for ADC stabilization
readADC(); //Read ADC
adcVal = adcVal * 5.0 / 1023.0; //Convert ADC value
FloatToStr(adcVal, lcdData); //Convert to string
LCD_Out(4,1,lcdData); //Display adc value on LCD
}
}
/*
//ADCON0 = 0b00000001;
ADCON1 = 0b00011010;
ADCON2 = 0b10101101;
Delay_ms(10);
adcVal = ADC_Read(0);
adcVal = adcVal / 6.413332;
FloatToStr(adcVal, lcdData);
LCD_Out(2,1,lcdData);
//ADCON0 = 0b00000101;
ADCON1 = 0b00001010;
ADCON2 = 0b10101101;
Delay_ms(10);
adcVal = ADC_Read(1);
adcVal = adcVal * 5.0 / 1023.0;
FloatToStr(adcVal, lcdData);
LCD_Out(3,1,lcdData);
//ADCON0 = 0b00001001;
ADCON1 = 0b00001010;
ADCON2 = 0b10101101;
Delay_ms(10);
adcVal = ADC_Read(2);
adcVal = adcVal * 5.0 / 1023.0;
FloatToStr(adcVal, lcdData);
LCD_Out(4,1,lcdData);
*/ |