1  # SPDX-FileCopyrightText: 2018 Kattni Rembor for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import board
 6  import pwmio
 7  
 8  for pin_name in dir(board):
 9      pin = getattr(board, pin_name)
10      try:
11          p = pwmio.PWMOut(pin)
12          p.deinit()
13          print("PWM on:", pin_name)  # Prints the valid, PWM-capable pins!
14      except ValueError:  # This is the error returned when the pin is invalid.
15          print("No PWM on:", pin_name)  # Prints the invalid pins.
16      except RuntimeError:  # Timer conflict error.
17          print("Timers in use:", pin_name)  # Prints the timer conflict pins.