The servo code didn't work

Other Hardware Motors, Mechanics, Power and CNC
23

And, this one didn't work either:

#include "avr/io.h"

#ifndef F_CPU
#define F_CPU 16000000UL
#endif

#include "util/delay.h"

#define OCR1_MIN 2000
#define OCR1_GAIN 2000

//void setup() {
//    // put your setup code here, to run once:
//
//    // Setup Timer1
//    //TCCR1A|=(1<<COM1A1)|(1<<COM1B1)|(1<<WGM11);        //NON Inverted PWM 
//    //TCCR1B|=(1<<WGM13)|(1<<WGM12)|(1<<CS11)|(1<<CS10); //PRESCALER=64 MODE=14(FAST PWM)
//    TCCR1A = 0b10100010;
//    TCCR1B = 0b00011010; //PRESCALER=8 MODE=14(FAST PWM)
//    //ICR1=4999;  //fPWM=50Hz
//    ICR1 = 40000;
//    
//    ADCSRA = 0b11000111;
//}


void write_arm_motors(float motor0, float motor1){
  OCR1A = OCR1_GAIN*motor0+OCR1_MIN;
  OCR1B = OCR1_GAIN*motor1+OCR1_MIN;
  return;
}

float read_knob_sensor(int knob){
  float reading = 0; /* Sensor reading, normalised
              (i.e., scaled) to be between 
              zero and one. */
  //DDRC &= 0b11111100;
  //ADCSRA = 0b11000111;
  
  if(knob == 1){
  ADMUX = 0b01100000; // ADC on Channel 0
  } else if(knob == 0){
  ADMUX = 0b01100001; // ADC on Channel 1
  }
  
  int readingInter = 0;
  readingInter = ADCW>>6;
  reading = readingInter / 1023.0;
  _delay_ms(15);
  
  //printf("reading = %f\n", reading);
  
  return reading;
}

int main() {

  //setup();

  
    // Setup Timer1
    //TCCR1A|=(1<<COM1A1)|(1<<COM1B1)|(1<<WGM11);        //NON Inverted PWM 
    //TCCR1B|=(1<<WGM13)|(1<<WGM12)|(1<<CS11)|(1<<CS10); //PRESCALER=64 MODE=14(FAST PWM)
    TCCR1A = 0b10100010;
    TCCR1B = 0b00011010; //PRESCALER=8 MODE=14(FAST PWM)
    //ICR1=4999;  //fPWM=50Hz
    ICR1 = 40000;
    
    ADCSRA = 0b11000111;
  
  while(1){
    write_arm_motors(read_knob_sensor(0),read_knob_sensor(1));
    }
}