how to make pic16f690 run because I put the program but when I put it in vcc and ground not work please show me

 

1. Show us the entire circuit. What you described might not run for multiple reasons if those are the only coonections.

2. What are the configuration settings? Most notably the oscillator selection.

Bob

 

Make a list of all the things that can happen that will prevent it from running.

 

1) What is the program supposed to do? Did you write it or get if off the internet?
2) Can you show the code? If you only loaded a hex file, even posting that might help.

 

There are 20 options for the oscillator in the config for the 16f690.
What is yours set to?
Max.

 

unsigned int x;
unsigned int y;
float adjpot;
float pospot;

void main() {
//ANSEL=0X4;
TRISA=0XFF;
//ANSELH=0;
TRISB=0;
do{
x= adc_read(0);
adjpot=5.0*x/1023;
y=adc_read(1);
pospot=5.0*y/1023;
if(pospot>adjpot){
portb.f4=1;
portb.f5=0;
portb.f6=1;
portb.f7=0;
}
if(pospot< adjpot){
portb.f4=0;
portb.f5=1;
portb.f6=0;
portb.f7=1;
}
if(pospot==adjpot){
portb=0;
}
}while(1);
}

 

please tell me oscillator selection.

 

Oscillator selection has nothing to do with the code you posted, except if you use an external crystal, that will be on PortA and will require RA4 to be an output. Presumably, you are also using PortA for analogue input/ADC. You have not initialized PortC. It is set as an analogue input on all pins.

For the oscillator, which do you plan to use:



An internal oscillator (i.e., choices 7 or 8) is often easier to use, and I would recommend selection 8 unless you need the oscillator output for something else.