support rpi5, bump vresion

.github/workflows/ci.yaml

@@ -9,7 +9,7 @@ jobs:
       fail-fast: true
       matrix:
         os: ["ubuntu-latest"]
-        python-version: ["3.7", "3.8", "3.9"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
 
     steps:
       - name: Checkout source

rpi_hardware_pwm/__init__.py

@@ -18,7 +18,7 @@ class HardwarePWM:
 
     Example
     ----------
-    >pwm = HardwarePWM(0, hz=20)
+    >pwm = HardwarePWM(0, hz=20, chip=0)
     >pwm.start(100)
     >
     >pwm.change_duty_cycle(50)
@@ -28,20 +28,21 @@ class HardwarePWM:
 
     Notes
     --------
+     - For Raspberry Pi 1,2,3,4, use chip=0 (default), for Raspberry Pi 5, use chip=2
      - If you get "write error: Invalid argument" - you have to set duty_cycle to 0 before changing period
      - /sys/ pwm interface described here: https://jumpnowtek.com/rpi/Using-the-Raspberry-Pi-Hardware-PWM-timers.html
 
     """
 
     _duty_cycle: float
     _hz: float
-    chippath: str = "/sys/class/pwm/pwmchip0"
 
-    def __init__(self, pwm_channel: int, hz: float) -> None:
+    def __init__(self, pwm_channel: int, hz: float, chip: int =0) -> None:
 
         if pwm_channel not in {0, 1}:
             raise HardwarePWMException("Only channel 0 and 1 are available on the Rpi.")
 
+        self.chippath: str = f"/sys/class/pwm/pwmchip{chip}"
         self.pwm_channel = pwm_channel
         self.pwm_dir = f"{self.chippath}/pwm{self.pwm_channel}"
         self._duty_cycle = 0

setup.py

@@ -13,7 +13,7 @@
 setup(
     name="rpi_hardware_pwm",
     packages=find_packages('.'),
-    version='0.1.4',
+    version='0.2.0',
     license='OSI Approved :: GNU General Public License v3 (GPLv3)',
     description='Control Hardware PWM on the Raspberry Pi',
     long_description = long_description,