Variable pca9685Const

Type Declaration

• channels: number

  How many channels it drives.

• counts: number

  How many counts each period is divided into.

• internalOscHz: number

  The part's internal oscillator frequency, in hertz.

• channelRegister: function

  • channelRegister(channel: number): number

    Returns the first of a channel's four consecutive registers.

    Parameters

    • channel: number

      The channel, 0 to 15.

    Returns number

    The register address.

    Throws

    If the channel is beyond the part.

• frequencyForPrescale: function

  • frequencyForPrescale(prescale: number, oscHz?: number): number

    Returns the update rate a prescale value produces.

    Parameters

    • prescale: number

      The prescale register value.

    • oscHz: number = PCA9685_INTERNAL_OSC_HZ

      The oscillator frequency, usually internalOscHz.

    Returns number

    The frequency in hertz.

• prescaleForFrequency: function

  • prescaleForFrequency(updateRateHz: number, oscHz?: number): number

    Returns the prescale value that sets an update rate.

    Parameters

    • updateRateHz: number

      The PWM frequency wanted.

    • oscHz: number = PCA9685_INTERNAL_OSC_HZ

      The oscillator frequency, usually internalOscHz.

    Returns number

    The prescale register value.