index :: hw

hw.rpi.pwm

аппаратный ШИМ (PWM) для RaspberryPi

доступно с версии: 0.9.8

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информация

|| Versions <5.0 The BCM283x SoC supports 2 hardware PWM channels. By default, the channels are mapped as follows: • PWM0 = GPIO12/GPIO18 • PWM1 = GPIO13/GPIO19 Consult the official documentation on how to enable and configure these. Note: the Raspberry Pi?s analog audio output uses both PWM channels. Playing audio and simultaneously accessing a PWM channel may cause issues. ~ || Raspberry Pi 5 and later The Raspberry Pi 5 support 4 hardware PWM channels. By default, the channels are mapped as follows: • PWM0 = GPIO12 • PWM1 = GPIO13 • PWM2 = GPIO18 • PWM3 = GPIO19 Consult the official documentation on how to enable and configure these. ~ Some of the GPIO pins capable of supporting hardware PWM can also be configured for use with other peripherals. Be careful not to enable two peripherals on the same pin at the same time.

аргументы:

• PWM_CH PWM channel. See @ch
  тип: int
  

методы:

• duty set duty cycle
  параметры:
  • DUTY duty cycle
    тип: float
    обязательно: True
    
• enable enable PWM. By default it is disabled.
  параметры:
  • ENABLE value
    тип: bool
    обязательно: True
    
• freq set frequency
  параметры:

  • FREQ frequency
    тип: float
    единица: Hz
    обязательно: True
    

  • DUTY duty cycle
    тип: float
    обязательно: True
    

• period set period. Expected width<=pulse.
  параметры:
  • PERIOD the whole cycle period
    тип: float
    единица: ms
    обязательно: True
    
• polarity set output polarity
  параметры:
  • INVERTED new value. If true: polarity is inverted
    тип: bool
    обязательно: True
    
• pwm set period and pulse width. Expected width<=pulse.
  параметры:

  • PERIOD the whole cycle period
    тип: float
    единица: ms
    обязательно: True
    

  • WIDTH pulse width
    тип: float
    единица: ms
    обязательно: True
    

• width set pulse width. Expected width<=pulse.
  параметры:
  • WIDTH pulse width
    тип: float
    единица: ms
    обязательно: True
    

свойства:

• @pwm_ch (initonly) Запросить/установить PWM channel. Valid values are: 0-3. If equals -1: no PWM channel selected.
  тип: int
  диапазон: -1..3
  по умолчанию: -1
  

входы:

• input messages
  тип: control

выходы:

• no output
  тип: control

ключевые слова:

pwm hawdware rpi raspberry

Авторы: Serge Poltavsky

Лицензия: GPL3 or later