AVR Freaks

No circuit really, only ISP connected, 10k on the reset line, and a 10k external resistor that I used to test if that would pull the pin to 5V (it did).

The adapter has been soldered a few times, so looks a bit messy, but another chip has the issue on the actual PCB too.

Thanks for the reply.

The active code does match, except for the commented out part, which for some reason ended up in the assembly file.

Heres the complete code, the AVR035.h is a few marcros from a appnote.

#define SETBIT(ADDRESS,BIT) (ADDRESS |= (1<<BIT))
#define CLEARBIT(ADDRESS,BIT) (ADDRESS &= ~(1<<BIT))
#define FLIPBIT(ADDRESS,BIT) (ADDRESS ^= (1<<BIT))
#define CHECKBIT(ADDRESS,BIT) (ADDRESS & (1<<BIT))
#define GETBIT(ADDRESS,BIT) (CHECKBIT(ADDRESS,BIT))

#define SETBITMASK(x,y) (x |= (y))
#define CLEARBITMASK(x,y) (x &= (~y))
#define FLIPBITMASK(x,y) (x ^= (y))
#define CHECKBITMASK(x,y) (x & (y))

#define VARFROMCOMB(x, y) x
#define BITFROMCOMB(x, y) y

#define C_SETBIT(comb) SETBIT(VARFROMCOMB(comb), BITFROMCOMB(comb))
#define C_CLEARBIT(comb) CLEARBIT(VARFROMCOMB(comb), BITFROMCOMB(comb))
#define C_FLIPBIT(comb) FLIPBIT(VARFROMCOMB(comb), BITFROMCOMB(comb))
#define C_CHECKBIT(comb) CHECKBIT(VARFROMCOMB(comb), BITFROMCOMB(comb))

 

 

/*
    B0-A0
    B1-A1
    B2-A3
    A7-A4
*/

#include <avr/io.h>
#include <util/delay.h>
#include <avr/wdt.h>
#include "AVR035.h"

int main(void)
{
//    wdt_reset();
//    wdt_enable(WDTO_15MS);
    
    CLEARBIT(DDRA,0); //Input
    SETBIT(PORTA,0); //Pullup
/*    
    CLEARBIT(DDRA,1); //Input
    SETBIT(PORTA,1); //Pullup    

    CLEARBIT(DDRA,3); //Input
    SETBIT(PORTA,3); //Pullup    
    
    CLEARBIT(DDRA,4); //Input
    SETBIT(PORTA,4); //Pullup    
    
    SETBIT(DDRB,0); //Output
    SETBIT(DDRB,1); //Output
    SETBIT(DDRB,2); //Output
    SETBIT(DDRA,7); //Output
    
    int16_t cnt1 = 0;
    int16_t cnt2 = 0;
    int16_t cnt3 = 0;
    int16_t cnt4 = 0;            
    
    while(1)
    {
    //    wdt_reset();

        if (GETBIT(PINA,0) == 0) cnt1 = 50;
        if (GETBIT(PINA,1) == 0) cnt2 = 50;
        if (GETBIT(PINA,3) == 0) cnt3 = 50;
        if (GETBIT(PINA,4) == 0) cnt4 = 50;

        if (cnt1 > 0) cnt1--;
        if (cnt2 > 0) cnt2--;
        if (cnt3 > 0) cnt3--;
        if (cnt4 > 0) cnt4--;                        
        
        if (cnt1 > 0)
            SETBIT(PORTB,0);
        else
            CLEARBIT(PORTB,0);
            
        if (cnt2 > 0)
            SETBIT(PORTB,1);
        else
            CLEARBIT(PORTB,1);
            
        if (cnt3 > 0)
            SETBIT(PORTB,2);
        else
            CLEARBIT(PORTB,2);
        
        if (cnt4 > 0)
            SETBIT(PORTA,7);
        else
            CLEARBIT(PORTA,7);

        _delay_ms(1);
    }
    */
}

VCC is 5.13V

GND connected.

The F_CPU was off due to div8 fuse not being set, but otherwise flashing a LED works.

    SETBIT(DDRB,0); //Output
    
    while (1)
    {
            SETBIT(PORTB,0);
            _delay_ms(500);
            CLEARBIT(PORTB,0);        
            _delay_ms(500);
    }

WDTON not set.

Resistance from A0-GND High than my meter can measure, A0-A1 16megaohms.