GPIO PWM example - Githubissues

Product seems promising, but without python libraries for pwm and gpio, it would be hard to use it.

sipeed@lpi3h-4cfe:~$ sudo apt install python3-gpiozero
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
python3-gpiozero is already the newest version (1.6.2-1+b1).
0 upgraded, 0 newly installed, 0 to remove and 67 not upgraded.

And then simple python3 program

from gpiozero import LED
from time import sleep

red = LED(17)

while True:
    red.on()    #turn led on
    sleep(1)    #delay for 1 second
    red.off()   #turn led off
    sleep(1)

gives this error:

sipeed@lpi3h-4cfe:~/Desktop$ python3 motor.py
/usr/lib/python3/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from rpigpio: This module can only be run on a Raspberry Pi!
  warnings.warn(
/usr/lib/python3/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from lgpio: No module named 'lgpio'
  warnings.warn(
/usr/lib/python3/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from rpio: No module named 'RPIO'
  warnings.warn(
/usr/lib/python3/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from pigpio: No module named 'pigpio'
  warnings.warn(
/usr/lib/python3/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from native: unable to locate Pi revision in /proc/device-tree or /proc/cpuinfo
  warnings.warn(
Traceback (most recent call last):
  File "/home/sipeed/Desktop/motor.py", line 4, in <module>
    red = LED(17)
          ^^^^^^^
  File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 108, in __call__
    self = super(GPIOMeta, cls).__call__(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/gpiozero/output_devices.py", line 200, in __init__
    super(DigitalOutputDevice, self).__init__(
  File "/usr/lib/python3/dist-packages/gpiozero/output_devices.py", line 83, in __init__
    super(OutputDevice, self).__init__(pin, pin_factory=pin_factory)
  File "/usr/lib/python3/dist-packages/gpiozero/mixins.py", line 85, in __init__
    super(SourceMixin, self).__init__(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 540, in __init__
    super(GPIODevice, self).__init__(**kwargs)
  File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 250, in __init__
    Device.pin_factory = Device._default_pin_factory()
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 291, in _default_pin_factory
    raise BadPinFactory('Unable to load any default pin factory!')
gpiozero.exc.BadPinFactory: Unable to load any default pin factory!

Can you share example how how to use PINS on product Longan Pi 3H.

sipeed / LonganPi-3H-SDK

GPIO PWM example #18