Thread: Quick buzzer

Hi guys.i try to write a program for quick buzzer in codevision with atmega32 and BCD7448 .can someone help me to find out my mistakes?

Code:

#include <maga32.h>
#include <delay.h>
unsigned int i;
viod init (){
PORTA=0x00;
DDRA=0xff;
PORTC=0x00;
DDRC=0xff;
}
void main (void){
init ();
while(1){
for(i =0;i <10;i ++){
if (PINA.0==0)
i=1;
elseif (PINA.1==0)
i=2;
elseif (PINA.2==0)
i=3;
elseif (PINA.3==0)
i=4;
elseif (PINA.4==0)
i=5;
elseif (PINA.5==0)
i=6;
elseif (PINA.6==0)
i=7;
elseif(PINA.7==0)
i=8;
else
break;
}
delay_ms(150);
}
}

> viod init ()
Maybe post something that compiles?

> elseif(PINA.7==0)
Or even just syntactically valid.

Post your error messages.
The PINA.7 etc may be valid on your old compiler (through some vendor extension), but isn't valid on your new compiler.

So, I suggest you find a support site for this non C code.

C does not have an "elseif" key word; therefore you are not writing C.

Link to Proteus Proteus Design Suite - Wikipedia

Tim S.

> I think the problem is ‘elseif’ maybe C can’t understand it.
Well if you made it "else if" by putting a space in there, that would work.

But there are several other things as well.

Originally Posted by christop

I think there's a misunderstanding here. I did not mean to suggest that you copied your code from anywhere. I requested that you copy and paste your code to this forum. Otherwise we'll be trying help you to debug code that's different from the code you're actually trying to compile. That wastes our time and your time.

So, if you want help, copy and paste your code to this forum. Don't type it again.

Code:

#include <mega32.h>
#include <delay.h>
 int i;
void main(void){
DDRA=0xff;
PORTA = 0x00;


PORTC = 0x00;
DDRC = 0xff;


while(1){
for (i=0;i<10;i++){
if (PINA.0==0)
i=1;            
else if (PINA.1==0)
i=2;
else if (PINA.2==0)
i=3;
else if (PINA.3==0)
i=4;
else if (PINA.4==0)
i=5;
else if (PINA.5==0)
i=6;
else if (PINA.6==0)
i=7;
else if (PINA.7==0)
i=8;
else break;
}
delay_ms(150);
}
}

this is my code with a little change

Here is your code indented so it's easier to follow what's going on.

Code:

#include <mega32.h>
#include <delay.h>

int i;

void main(void)
{
  DDRA = 0xff;
  PORTA = 0x00;
  PORTC = 0x00;
  DDRC = 0xff;

  while (1) {
    for (i = 0; i < 10; i++) {
      if (PINA.0 == 0)
        i = 1;
      else if (PINA.1 == 0)
        i = 2;
      else if (PINA.2 == 0)
        i = 3;
      else if (PINA.3 == 0)
        i = 4;
      else if (PINA.4 == 0)
        i = 5;
      else if (PINA.5 == 0)
        i = 6;
      else if (PINA.6 == 0)
        i = 7;
      else if (PINA.7 == 0)
        i = 8;
      else
        break;
    }
    delay_ms(150);
  }
}

So what's your new question?

While do you think it should do something?

Tim S.

Originally Posted by Afsaneh

I want 7seg show the number of each key to be pressed.��

What's that got to do with buzzer in the thread title?

Look at your circuit diagram and figure out how the port and pin logic applies to buttons, then try and use that for your display.