The servo code didn't work

Other Hardware Motors, Mechanics, Power and CNC
7

I do have such a reason, so I have to use registers.

And, I found these in the datasheet of ATmega328p:

Blockquote
To do a 16-bit write, the high byte must be written before the low byte. For a 16-bit read, the low byte must be read before the
high byte.

and, I wrote this:

void setup() {
  // put your setup code here, to run once:
  TCCR1A|=(1<<COM1A1)|(1<<COM1B1)|(1<<WGM11)|(1<<COM1A0)|(1<<COM1B0);        //NON Inverted PWM 
  TCCR1B|=(1<<WGM13)|(1<<WGM12)|(1<<CS11)|(1<<CS10); //PRESCALER=64 MODE=14(FAST PWM)
  //TCCR1B|=(1<<WGM13)|(1<<WGM12)|(1<<CS11); //PRESCALER=8 MODE=14(FAST PWM)
  DDRB|= (1<<PB1)|(1<<PB2);   //PWM Pins as Output
  //ICR1=39999;  //fPWM=50Hz
  ICR1=4999;  //fPWM=50Hz
  
}

void loop() {
  // put your main code here, to run repeatedly:
  OCR1AH = highByte(250);
  OCR1AL = lowByte(250);
  //OCR1A = 250;
  delay(1000);
  OCR1AH = highByte(375);
  OCR1AL = lowByte(375);
  delay(1000);
  OCR1AH = highByte(500);
  OCR1AL = lowByte(500);
  //OCR1A = 500;
  delay(1000);

It still didn't work.

and this:

  ICR1H = highByte(4999);
  ICR1L = lowByte(4999);

I could only heard some noise form the servo.