Can anyone please tell me how to fix this code, Its a volt meter/analyser for a battery charger.
It's a atmel atmega48v. It doesn't use the arduino ide so I tried atmel studio 6.2.
When I press the build button I get this error message "util.c: no such file or directory".
I presume it's a library im missing if so where can I get it and where do I put it thanks.
code
#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdio.h>
#include "util.c"
#include "adc.h"
#define MUX_OFFSET 0x40 // MUX value for REFS0 to be enabled for AREV <---> VCC tie
#define ADC_SAVE 64 // average ADC values for sensors
#define CLR(x,y) (x&=(~(1<<y)))
#define SET(x,y) (x|=(1<<y))
#define CC_D1 PB0
#define CC_D2 PB1
#define CC_D3 PB2
#define ADC0 PC0
#define ADC_DEBUG 0 // show ADC values on 7 segement display
// globals
uint16_t volt_out = 0; // range 0 - 5120, used to convert adc to voltage - adc multiplier
uint16_t volt = 0; // battery voltage, could be mains power {120V,220VAC} if battery is not connected
uint8_t adc_count = 0; // counts sensor averaging
uint16_t avg_adc[ADC_SAVE]; // store adc values for each sensor for average calc
uint8_t volt_dig1, // voltage reading broken broken out for 7-segment
volt_dig2,
volt_dig3 = 0;
uint8_t hexcode;
uint16_t adc_volt;
uint16_t adc_read;
uint16_t adc_avg_total;
uint8_t disp_pos=1;
int main (void);
ISR(ADC_vect);
void port_init (void);
void adc2avg (void);
void adc2volt (void);
void digit_breakup (void);
void display_digits (void);
void write_sev_seg (uint8_t alphanum, uint8_t digit);
uint8_t digit_2_hex (uint8_t display_digit);
int main (void)
{
port_init();
adc_init();
sei();
while (1)
{
SET(ADCSRA, ADSC); // start adc conversion
if ( adc_count == ADC_SAVE ) // accumulate ADC readings
{
adc_count = 0;
adc2avg(); // average analog voltage sensor values
adc2volt(); // convert analog readings into voltage fahrenheit
digit_breakup(); // break voltage into hundreds, tens and ones places
}
display_digits(); // update 7-segement display w/voltage
// delay_ms(1);
}
return(0);
}
void port_init (void) {
DDRD=0xFF; // display port all outputs
PORTD=0x00; // disable all pull-ups
SET(DDRB, CC_D1); // output for display, start high, pull low to use
SET(DDRB, CC_D2); // output for display, start high, pull low to use
SET(DDRB, CC_D3); // output for display, start high, pull low to use
SET(PORTB, CC_D1); // output for display, start high, pull low to use
SET(PORTB, CC_D2); // output for display, start high, pull low to use
SET(PORTB, CC_D3); // output for display, start high, pull low to use
}
// collect analog values for averaging
ISR(ADC_vect)
{
// ADC sensors:
// adc0 - temp
avg_adc[adc_count] = ADCW;
adc_count++;
}
// average sensor data
void adc2avg (void)
{
uint8_t i;
// reset global vars to zero
adc_count = 0;
adc_volt = 0;
adc_read = 0;
adc_avg_total = 0;
// slow down and average ADC readings to reduce noise
// reduce ADC_SAVE to speed up response
for(i=0;i<=ADC_SAVE;i++)
{
adc_avg_total += avg_adc[adc_count];
}
adc_read += adc_avg_total / ADC_SAVE;
adc_volt = adc_read;
}
// convert adc values into voltage
// just diving adc by 4 gives approximate voltage
void adc2volt (void)
{
// external spreadsheet used for calculating adc_divider
float adc_divider = 3.50;
adc_volt = 10 * ( adc_volt / adc_divider );
// 5% boost on readings below 15v
if ( adc_volt >= 150 )
adc_volt = adc_volt * .985;
}
// reformat voltage and pot values for 7 seg
void digit_breakup (void)
{
if ( ADC_DEBUG )
adc_volt = adc_read;
volt_dig1 = adc_volt / 100; // hundreds place
volt_dig2 = ( adc_volt - ( volt_dig1 * 100 ) ) / 10; // tens place
volt_dig3 = adc_volt - ( ( volt_dig1 * 100 ) + ( volt_dig2 * 10 ) ); // ones place
}
uint8_t digit_2_hex ( uint8_t display_digit )
{
uint8_t hex;
switch ( display_digit )
{
case (0): { hex = 0x77; break; }
case (1): { hex = 0x12; break; }
case (2): { hex = 0x3D; break; }
case (3): { hex = 0x3E; break; }
case (4): { hex = 0x5A; break; }
case (5): { hex = 0x6E; break; }
case (6): { hex = 0x6F; break; }
case (7): { hex = 0x32; break; }
case (
: { hex = 0x7F; break; }
case (9): { hex = 0x7A; break; }
}
return(hex);
}
// send voltage to 7-segment
// one digit at a time
void display_digits (void)
{
// run the 7-segememt display
for ( disp_pos=1;disp_pos<=3;disp_pos++)
{
if ( disp_pos == 1 )
hexcode = digit_2_hex(volt_dig1); // hexcode for 7-segement first digit
else if ( disp_pos == 2 ) {
if (ADC_DEBUG)
hexcode = digit_2_hex(volt_dig2); // hexcode for 7-segement second digit with decimal (0x80)
else
hexcode = digit_2_hex(volt_dig2) | 0x80; // hexcode for 7-segement second digit with decimal (0x80)
} else if ( disp_pos == 3 )
hexcode = digit_2_hex(volt_dig3); // hexcode for 7-segement third digit
write_sev_seg(hexcode,disp_pos); // pull the cathodes low to populate display
}
}
void write_sev_seg (uint8_t hexcode, uint8_t digit)
{
if ( digit == 1 ) {
// shutdown display - reverse logic for common cathode
// enable digit-1
SET(PORTB, CC_D1);
SET(PORTB, CC_D2);
SET(PORTB, CC_D3);
CLR(PORTB, CC_D1);
} else if ( digit == 2 ) {
SET(PORTB, CC_D1);
SET(PORTB, CC_D2);
SET(PORTB, CC_D3);
CLR(PORTB, CC_D2);
} else if ( digit == 3 ) {
SET(PORTB, CC_D1);
SET(PORTB, CC_D2);
SET(PORTB, CC_D3);
CLR(PORTB, CC_D3);
}
PORTD = hexcode;
delay_ms(1); // controls display speed
SET(PORTB, CC_D1); // output for display, start high, pull low to use
SET(PORTB, CC_D2); // output for display, start high, pull low to use
SET(PORTB, CC_D3); // output for display, start high, pull low to use
}
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