如何循环伺服电机并停止并再次循环？

Question

I bought mg995 servo motor but it seems controlling is different from the mg90 because it is digital.

What I want to do is spinning mg995 loop, stops when I press ctrl+c and starts loop again when I press the enter. the code is below but it won't loop again after servo1.stop()

from cmath import inf
from PIL import Image
import numpy as np

import RPi.GPIO as GPIO     
from time import sleep      


################# -----------------------------
GPIO.setmode(GPIO.BCM)      

servo1_pin = 18                  

GPIO.setup(servo1_pin, GPIO.OUT)   
servo1 = GPIO.PWM(servo1_pin, 50)  
servo1.start(0)  


servo_min_duty = 3               
servo_max_duty = 12             


def set_servo_degree(servo_num, degree):
    if degree > 180:
        degree = 180
    elif degree < 0:
        degree = 0

    duty = servo_min_duty+(degree*(servo_max_duty-servo_min_duty)/180.0)
    if servo_num == 1:
        servo1.ChangeDutyCycle(duty)



#################-------------------------------


try:
  while True:
    set_servo_degree(1, 0)
    
except KeyboardInterrupt: 
  servo1.stop() # after servo stops, it won't start again.
  print("should be end")
  pass

go_button = input('go? press enter!')
if go_button == "":
   ## after press the enter, starts loop again. 
    try:
      while True:
        set_servo_degree(1, 0)
    
else:
    break()


sleep(2)                           
GPIO.cleanup()             

thank you!

Answer 1

The while loop should be outside of the set_servo_degree function.

The modified part of your code is as below

servo_num = 1
servo_deg = 0

while True:
    try:
        set_servo_degree(servo_num, servo_deg)
    except KeyboardInterrupt:
        servo1.stop()
        go_button = input('go? press enter!')
        if go_button == "":
            set_servo_degree(servo_num, servo_deg)
        else:
            break

sleep(2)
GPIO.cleanup()