Ramp wave generator in c

Here is a simple ramp wave generator you can directly give data to DAC or use it for your internal reference...

1:  //Ramp wave generating in c   
2:  Void main()  
3:  {  
4:       Int I;  
5:       I=0;  
6:       While(1)  
7:       {  
8:            I++;  
9:            delay_ms(1)//this count decides the frequency   
10:            if(I>=256) // this count decides the amplitude  
11:            {  
12:                 I=0;  
13:            }  
14:       }  
15:  }