Help in PWM Frequency

Rabbit
1

Hi, All

Please if any one Can help me in the follwoign code :



#class auto

#use RCM41xx.LIB

#define ADC_SCLKBAUD 115200ul

nodebug
void sDelay(unsigned int delay)
{
	auto unsigned long done_time;

	done_time = SEC_TIMER + delay;
   while( (long) (SEC_TIMER - done_time) < 0 );
}


void main()
{
   unsigned long  freq;
   auto float  Draw;
   
   brdInit();


   freq = pwm_init(20);//  [I][B]It returen 112 Hz[/B][/I]

sDelay(1);
while(1)
 {
		 Draw = anaIn(0, SINGLE, GAIN_2);
		Draw = Draw/5.24 + 100;
                         pwm_set(0, (int)(Draw), PWM_USEPORTE);

 }
}

I used this code to controlle Servo Motor Using a Varible Resistor.
But The Out put Frequency of the PWM is 112 Hz, and the typical frequency should be about 50 Hz.

I tried to reduce the Frequency in // freq = pwm_init(20);// But the Min Value I get is 112 Hz.

So Please if any one can Help Me in that .

Regards
Redwan

2

How did you fixed this? I have the same problem. I get 112Hz as the minimum freq.