![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQZa24hq_5cUhwee5bfSTrKZSnBal9b_zrLgUhLpxbJW47xCtNOrK-7i_BUT94Ds3bfiIxShXjmEKwIM-jJcGYzt_CFr_ZqygraK-kqw-RfyG-Y7a1zsKBAE-32C9HZn5JIWpARiYBEj2v/s400/3.jpg)
code
int Read_VR(void);
main()
{
int i,time;
TRISB =0x00;
CMCON =0x07;
while(1)
{
for(i=1;i<129;i=i*2)
{
PORTB = i;
time = Read_VR()*2;
Vdelay_ms(time);
}
}
}
int Read_VR(void)
{
int i;
i=0;
TRISA= 0xF0;
PORTA.F0 =1;
Delay_ms(10);
TRISA = 0xF1;
while(PORTA.F0 == 1)
{
i++;
}
i=i/10;
return i ;
}
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