ATmega16 ADC simultion partly work on 0.1.7 SImulIDE and did`t work on 1.1.0 - SR0 ver.
Hi
Could anybody help me with problem with SimulIDE ?
OS Name Ubuntu 20.04.6 LST
Precompiled SimulIDE 0.1.7
recently downloaded SImulIDE 1.1.0 -SR0
On old version my code partly work (display zeros on 7-segment display but not display ADC value
on new version display noting even I draw new circuit from scratch.
my code
#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdint.h>
#define DISPLAY PORTC
#define DIGIT_0 PIND0
#define DIGIT_1 PIND1
#define DIGIT_2 PIND2
#define DIGIT_3 PIND3
#define SELECTOR PORTD
#define TIMER_COMPARE_VALUE 249
#define DISPLAY_DELAY 3
volatile uint8_t numbers[] = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f, 0x40};
volatile uint16_t timer = 0;
volatile uint8_t digit = 0;
void initialize_timer(void) {
TCCR0 |= (1 << CS01) | (1 << CS00) | (1 << WGM01); // prescale 64, CTC mode
TCNT0 = 0x00;
TIMSK |= (1 << OCIE0); // compare match interrupt enable
OCR0 = TIMER_COMPARE_VALUE; // 1ms interrupt
sei(); // enable global interrupts
}
void initalize_ports(void) {
DDRC = 0xFF;
PORTC = 0x00;
DDRD |= (1<<PIND0) | (1<<PIND1) | (1<<PIND2) | (1<<PIND3);
}
void initalize_adc(void) {
ADMUX |= (1<< REFS0); //AVCC with external capacitor at AREF pin
ADMUX |= (1<<MUX0);
ADCSRA |= (1<<ADEN); // ADC enable
ADCSRA |= (1<< ADPS1) | (1<<ADPS2); // prescale 64
}
uint16_t adc_read(void) {
ADCSRA |= (1<< ADSC); // ADC start convertion
while(ADCSRA & (1<<ADSC));
return ADC;
}
void delay(void) {
timer++;
if (timer % DISPLAY_DELAY == 0) {
digit++;
if(digit > 3) {
digit = 0;
}
timer = 0;
}
}
void display_digit(volatile uint8_t *port, uint16_t number) {
if(digit == 0) {
SELECTOR |= (1<<DIGIT_0);
SELECTOR &=~ ((1<<DIGIT_1) | (1<<DIGIT_2) | (1<<DIGIT_3));
*port = numbers[number % 10];
}
if(digit == 1) {
SELECTOR |= (1<<DIGIT_1);
SELECTOR &=~ ((1<<DIGIT_0) | (1<<DIGIT_2) | (1<<DIGIT_3));
*port = numbers[(number /10) % 10];
}
if(digit == 2) {
SELECTOR |= (1<<DIGIT_2);
SELECTOR &=~ ((1<<DIGIT_1) | (1<<DIGIT_0) | (1<<DIGIT_3));
*port = numbers[(number /100) % 10];
}
if(digit == 3) {
SELECTOR |= (1<<DIGIT_3);
SELECTOR &=~ ((1<<DIGIT_1) | (1<<DIGIT_2) | (1<<DIGIT_0));
*port = numbers[(number / 1000) % 10];
}
}
ISR(TIMER0_COMP_vect) {
delay();
}
int main(void)
{
initalize_ports();
initialize_timer();
initalize_adc();
while (1)
{
display_digit(&DISPLAY, adc_read());
}
return 0;
}
thanks.
Hi.
In the circuit in 1.1.0 Reset pin should be connected to +5V.
Hi,
Could you please explain?
Something like this:
Dear arcachofo thank you for help.
Simulation starts working, but partly (only lowest digit shows value).
could you please explain why rst should be connected to +5 V?
Is there any information in Atmega datasheet?
Thank you!
Hi.
Simulation starts working, but partly (only lowest digit shows value).
I see...
There is an error in some configuration files for atmega16.
You can try to add files attached to simulide data folder.
Merge data folder attached with SimulIDE_1.1.0-SR0/data
Then open simulide and try your circuit.
could you please explain why rst should be connected to +5 V?
Because Reset pin internal pull-up resistor in AVRs is not simulated in simulide.
Uploaded files:
Dear arcachofo
Thank you a lot!
Now simulation works!
Best regards!
Nice.
Thank you for reporting.