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authorCody Hiar <codyfh@gmail.com>2018-05-27 15:29:21 -0600
committerCody Hiar <codyfh@gmail.com>2018-05-27 15:29:21 -0600
commitceec171c42bd79f1762b971569e20ead656f4fd0 (patch)
tree1880be0b1cef9786be5bc818cbd50095cd797a6d /Adafruit_Python_GPIO/Adafruit_GPIO/PWM.py
parent611a8b7be4331e4f8416c4d10a0be47a109b47e4 (diff)
Moving libs into separate own directory
Diffstat (limited to 'Adafruit_Python_GPIO/Adafruit_GPIO/PWM.py')
-rw-r--r--Adafruit_Python_GPIO/Adafruit_GPIO/PWM.py128
1 files changed, 0 insertions, 128 deletions
diff --git a/Adafruit_Python_GPIO/Adafruit_GPIO/PWM.py b/Adafruit_Python_GPIO/Adafruit_GPIO/PWM.py
deleted file mode 100644
index 1e1717a..0000000
--- a/Adafruit_Python_GPIO/Adafruit_GPIO/PWM.py
+++ /dev/null
@@ -1,128 +0,0 @@
-# Copyright (c) 2014 Adafruit Industries
-# Author: Tony DiCola
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-import Adafruit_GPIO.Platform as Platform
-
-
-class RPi_PWM_Adapter(object):
- """PWM implementation for the Raspberry Pi using the RPi.GPIO PWM library."""
-
- def __init__(self, rpi_gpio, mode=None):
- self.rpi_gpio = rpi_gpio
- # Suppress warnings about GPIO in use.
- rpi_gpio.setwarnings(False)
- # Set board or BCM pin numbering.
- if mode == rpi_gpio.BOARD or mode == rpi_gpio.BCM:
- rpi_gpio.setmode(mode)
- elif mode is not None:
- raise ValueError('Unexpected value for mode. Must be BOARD or BCM.')
- else:
- # Default to BCM numbering if not told otherwise.
- rpi_gpio.setmode(rpi_gpio.BCM)
- # Store reference to each created PWM instance.
- self.pwm = {}
-
- def start(self, pin, dutycycle, frequency_hz=2000):
- """Enable PWM output on specified pin. Set to intiial percent duty cycle
- value (0.0 to 100.0) and frequency (in Hz).
- """
- if dutycycle < 0.0 or dutycycle > 100.0:
- raise ValueError('Invalid duty cycle value, must be between 0.0 to 100.0 (inclusive).')
- # Make pin an output.
- self.rpi_gpio.setup(pin, self.rpi_gpio.OUT)
- # Create PWM instance and save a reference for later access.
- self.pwm[pin] = self.rpi_gpio.PWM(pin, frequency_hz)
- # Start the PWM at the specified duty cycle.
- self.pwm[pin].start(dutycycle)
-
- def set_duty_cycle(self, pin, dutycycle):
- """Set percent duty cycle of PWM output on specified pin. Duty cycle must
- be a value 0.0 to 100.0 (inclusive).
- """
- if dutycycle < 0.0 or dutycycle > 100.0:
- raise ValueError('Invalid duty cycle value, must be between 0.0 to 100.0 (inclusive).')
- if pin not in self.pwm:
- raise ValueError('Pin {0} is not configured as a PWM. Make sure to first call start for the pin.'.format(pin))
- self.pwm[pin].ChangeDutyCycle(dutycycle)
-
- def set_frequency(self, pin, frequency_hz):
- """Set frequency (in Hz) of PWM output on specified pin."""
- if pin not in self.pwm:
- raise ValueError('Pin {0} is not configured as a PWM. Make sure to first call start for the pin.'.format(pin))
- self.pwm[pin].ChangeFrequency(frequency_hz)
-
- def stop(self, pin):
- """Stop PWM output on specified pin."""
- if pin not in self.pwm:
- raise ValueError('Pin {0} is not configured as a PWM. Make sure to first call start for the pin.'.format(pin))
- self.pwm[pin].stop()
- del self.pwm[pin]
-
-
-class BBIO_PWM_Adapter(object):
- """PWM implementation for the BeagleBone Black using the Adafruit_BBIO.PWM
- library.
- """
-
- def __init__(self, bbio_pwm):
- self.bbio_pwm = bbio_pwm
-
- def start(self, pin, dutycycle, frequency_hz=2000):
- """Enable PWM output on specified pin. Set to intiial percent duty cycle
- value (0.0 to 100.0) and frequency (in Hz).
- """
- if dutycycle < 0.0 or dutycycle > 100.0:
- raise ValueError('Invalid duty cycle value, must be between 0.0 to 100.0 (inclusive).')
- self.bbio_pwm.start(pin, dutycycle, frequency_hz)
-
- def set_duty_cycle(self, pin, dutycycle):
- """Set percent duty cycle of PWM output on specified pin. Duty cycle must
- be a value 0.0 to 100.0 (inclusive).
- """
- if dutycycle < 0.0 or dutycycle > 100.0:
- raise ValueError('Invalid duty cycle value, must be between 0.0 to 100.0 (inclusive).')
- self.bbio_pwm.set_duty_cycle(pin, dutycycle)
-
- def set_frequency(self, pin, frequency_hz):
- """Set frequency (in Hz) of PWM output on specified pin."""
- self.bbio_pwm.set_frequency(pin, frequency_hz)
-
- def stop(self, pin):
- """Stop PWM output on specified pin."""
- self.bbio_pwm.stop(pin)
-
-
-def get_platform_pwm(**keywords):
- """Attempt to return a PWM instance for the platform which the code is being
- executed on. Currently supports only the Raspberry Pi using the RPi.GPIO
- library and Beaglebone Black using the Adafruit_BBIO library. Will throw an
- exception if a PWM instance can't be created for the current platform. The
- returned PWM object has the same interface as the RPi_PWM_Adapter and
- BBIO_PWM_Adapter classes.
- """
- plat = Platform.platform_detect()
- if plat == Platform.RASPBERRY_PI:
- import RPi.GPIO
- return RPi_PWM_Adapter(RPi.GPIO, **keywords)
- elif plat == Platform.BEAGLEBONE_BLACK:
- import Adafruit_BBIO.PWM
- return BBIO_PWM_Adapter(Adafruit_BBIO.PWM, **keywords)
- elif plat == Platform.UNKNOWN:
- raise RuntimeError('Could not determine platform.')