AVR-Chat

I can’t say what’s wrong at first sight, but did you try it with integers instead of floats?
It might be easier on the compiler, maybe debugger?

Also, disabling all optimization might help the debugger.

Good luck,

Cat

From: rastavibration86 
Sent: Friday, August 12, 2011 4:35 AM
To: AVR-Chat@yahoogroups.com 
Subject: [AVR-Chat] Simple Binary to Decimal conversion code not working!!!

Hi!
I have a problem with this source code which is going to run in ATmega1284P.
It is a part of another source code, but this simple part is not working and I can not find the reason.
I am using AVR Studio and I have used both AVR Simulator and AVR Simulator 2 as debug platform and I have also tried with JTAGII. I obtain the same results: nothing.

The problem is that no proper conversion is done and when executing:

Dec = Dec + binarypower;

Debug seems not to be working any more.
Here is the source code. I know it is too simple and that's why I can't understand why it is not working as expected.
Looking forward for your help. Thanks a lot!

#include <avr/io.h>
#include "BitOperationMacros.h"


float Power(float, int);
float Bin2Dec(uint8_t, int);

 
int main(void)
{

float Decimal = 0;
uint8_t V = 0x0B;
Decimal = Bin2Dec(V, 8); 
return 0; 
}


float Power(float base, int exponent)
{
float volatile result=1;
for(int i=1; i<=exponent; i++)
{
result = result*base;
}
return result;
}

float Bin2Dec (uint8_t Value, int nbits)
{
float volatile Dec = 0;
int volatile i=0;
float volatile binarypower=0;
while(i<=(nbits-1))
{
if(CHECKBIT(Value,i) == 1)
{
binarypower=Power(2.0,i);
Dec = Dec + binarypower;
}
i++;
}
return Dec;
}



------------------------------------

Yahoo! Groups Links





[Non-text portions of this message have been removed]