Jag hittade en sida med schema samt program till en voltmätare
som styrs av en PIC16F688 men jag får inte det att fungera.
http://www.electronics-lab.com/projects ... index.html
Koden är följande:
Kod: Markera allt
/*
Digital Voltmeter based on PIC16F688
Rajendra Bhatt, Oct 12, 2010
*/
// LCD module connections
sbit LCD_RS at RC4_bit;
sbit LCD_EN at RC5_bit;
sbit LCD_D4 at RC0_bit;
sbit LCD_D5 at RC1_bit;
sbit LCD_D6 at RC2_bit;
sbit LCD_D7 at RC3_bit;
sbit LCD_RS_Direction at TRISC4_bit;
sbit LCD_EN_Direction at TRISC5_bit;
sbit LCD_D4_Direction at TRISC0_bit;
sbit LCD_D5_Direction at TRISC1_bit;
sbit LCD_D6_Direction at TRISC2_bit;
sbit LCD_D7_Direction at TRISC3_bit;
// End LCD module connections
char Message1[] = "DVM Project";
unsigned int ADC_Value, DisplayVolt;
char *volt = "00.0";
void main() {
ANSEL = 0b00000100; // RA2/AN2 is analog input
ADCON0 = 0b00001000; // Analog channel select @ AN2
ADCON1 = 0x00;
CMCON0 = 0x07 ; // Disbale comparators
TRISC = 0b00000000; // PORTC All Outputs
TRISA = 0b00001100; // PORTA All Outputs, Except RA3 and RA2
Lcd_Init(); // Initialize LCD
Lcd_Cmd(_LCD_CLEAR); // CLEAR display
Lcd_Cmd(_LCD_CURSOR_OFF); // Cursor off
Lcd_Out(1,1,Message1);
Lcd_Chr(2,10,'V');
do {
ADC_Value = ADC_Read(2);
DisplayVolt = ADC_Value * 2;
volt[0] = DisplayVolt/1000 + 48;
volt[1] = (DisplayVolt/100)%10 + 48;
volt[3] = (DisplayVolt/10)%10 + 48;
Lcd_Out(2,5,volt);
delay_ms(100);
} while(1);
}
programera för att kunna göra egna program.
