[SOLVED] Function delay_ms in CodeVision is doesnt work

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tarose78

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Hi all,

I am building a very simple program using Atmega128 and CodeVision v2.05.3 with 11,059200Mhz crystal
I also configured at the project settings using the right CLOCK
Burned using USBASP with avrdude.
Below is the code...


I am expecting that the led1 is on at the first time followed by led2 is on then led3 is on at the next 100 ms.

But it doesnt work as I expected,
only led1 and led2 is on, but led3 is still off.
I am suggest that delay_ms() function is not working properly.

Am I missing something here ?
Please Help...
 

I search on every website about this and tried as they told to do.
- Using the latest version of Coldvision 3.05
- Pay attention to cpu clock, and in the Project Settings must be set exactly as the crystal attached to the board. ( for xtal, I use 11,0592 with 22pf capacitors)

Been there done that, but the problem still exists.

anybody will help?
 

mathespbe said:
just add a line after "led3_hi; " that "while(1);"

It'll work fine....
Post the response...
Click to expand...

Thanks mathespbe for the response,

I tried that also, seems that the program stop or got returned when hit the function delay_ms(100);
so led3 is still off.
 

tarose78 said:
Thanks mathespbe for the response,

I tried that also, seems that the program stop or got returned when hit the function delay_ms(100);
so led3 is still off.
Click to expand...

Instead of delay_ms(100), use a for loop delay...
Now check it whether the LED gets ON or not... If it does the problem exists because of this delay function...
just use a delay function as follows...

for(int i=0;i<100;i++)
for(int j=0;j<100;j++);
 

Now I modified as follow
The result is, led3 is ON. So, I guess it is something to do with delay_ms function.
So I try to create an empty function ( that will replace delay_ms ).
The entire code is as follow

From the above code, lay_ms() should be return nothing and the program should be continue to led3_hi;
But the fact is not, only led1 and led2 is ON but led3 still Off.

thats weird.
 

Use this code...
It must work fine....

Code: 
#include <mega128.h>
#include <delay.h>
#define led1_hi PORTA.7=1
#define led2_hi PORTA.6=1
#define led3_hi PORTA.5=1

#define led1_lo PORTA.7=0
#define led2_lo PORTA.6=0
#define led3_lo PORTA.5=0
void lay_ms()
{
}

void main(void)
{
DDRA|=(1<<5);
DDRA|=(1<<6);
DDRA|=(1<<7);

led1_hi;
led2_hi;
lay_ms();
led3_hi;
while(1);
}
 

Tried that, but still same.
Perhaps there is something wrong with the board.

 

It is the schema, I use eagle but only for printing the board only.
It is working well with WinAVR + AvrDude.
_delay_ms() is working
void function is also working.

But not with Coldvision.
 

Got it.

My ATMega128 is brand new, m103 is should be deactivated.
So, I use Extreme AVR burner to set fusebit and set as follow
low 0xff
high 0xc9
extended 0xFF

That finally solved the problems.
Thanks for all the helps.
 

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