support rpi5, bump version

Author: CamDavidsonPilon

README.md

@@ -16,10 +16,15 @@ Access the hardware PWM of a Raspberry Pi with Python. More lightweight than alt
 
 ### Examples
 
+
+> For Rpi 1,2,3,4, use chip=0; For Rpi 5, use chip=2
+
+
+
 ```python
 from rpi_hardware_pwm import HardwarePWM
 
-pwm = HardwarePWM(pwm_channel=0, hz=60)
+pwm = HardwarePWM(pwm_channel=0, hz=60, chip=0)
 pwm.start(100) # full duty cycle
 
 pwm.change_duty_cycle(50)

rpi_hardware_pwm/__init__.py

@@ -27,20 +27,21 @@ class HardwarePWM:
 
     Notes
     --------
+     - For Rpi 1,2,3,4, use chip=0; For Rpi 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,