C# Class Emlid.WindowsIot.Hardware.Boards.Navio.NavioLedPwmDevice

Navio LED & PWM servo driver (PCA9685 hardware device), connected via I2C.

Navio uses the NxpPca9685Device as a dual-purpose PWM and LED driver, i.e. for servo control and the high intensity RGB status LED. It is connected via the I2C bus. See http://docs.emlid.com/Navio-dev/servo-and-rgb-led/ for more information. NxpPca9685Device

Inheritance: Emlid.WindowsIot.Hardware.Components.NxpPca9685.NxpPca9685Device

显示文件 Open project: emlid/Navio-SDK-Windows-IoT Class Usage Examples

Public Methods

Method	Description
Initialize ( float frequency, bool clear = true, bool restart = true, bool enable = false ) : NavioLedPwmDevice	Creates an initialized instance.
ReadAll ( ) : void	Reads all values from the device and updates properties.
Restart ( NxpPca9685Mode1Bits options ) : void	Restarts the device with additional options specified, then updates all properties.
SetLed ( int red, int green, int blue ) : void	Sets RGB values of the high intensity LED together (in one operation). Automatically inverts the value, providing a natural behaviour where a higher number produces a higher LED intensity. Normally, when written as raw PWM values, the output is inverted due to common anode.

Protected Methods

Method	Description
Dispose ( bool disposing ) : void	Frees resources owned by this instance.

Private Methods

Method	Description
NavioLedPwmDevice ( Windows.Devices.I2c.I2cDevice device ) : System
OnLedBlueChannelChanged ( object sender, EventArgs arguments ) : void	Updates the LedBlue property when the related channel changed.
OnLedGreenChannelChanged ( object sender, EventArgs arguments ) : void	Updates the LedGreen property when the related channel changed.
OnLedRedChannelChanged ( object sender, EventArgs arguments ) : void	Updates the LedRed property when the related channel changed.
ReadLed ( ) : void	Reads the LED channels from the device, calculates then updates the related properties.

Method Details

Dispose() protected method

Frees resources owned by this instance.

protected Dispose ( bool disposing ) : void
disposing	bool	/// True when called via , false when called from the finalizer. ///
return	void

Initialize() public static method

Creates an initialized instance.

public static Initialize ( float frequency, bool clear = true, bool restart = true, bool enable = false ) : NavioLedPwmDevice
frequency	float	/// for important information. /// Use to support most analog servos. ///
clear	bool	Clears all LED/PWM values.
restart	bool	/// Set true to restart the device which also enables the osciallator. /// When false, you have to call or later to enable the oscillator. ///
enable	bool	/// Set true to enable output, or false to continue with further initialization before enabling output. /// When false, you have to set it later before any output can occur. /// Defaults to false to prevent unexpected behaviour from damaging hardware. ///
return	NavioLedPwmDevice

ReadAll() public method

Reads all values from the device and updates properties.

public ReadAll ( ) : void
return	void

Restart() public method

Restarts the device with additional options specified, then updates all properties.

public Restart ( NxpPca9685Mode1Bits options ) : void
options	NxpPca9685Mode1Bits	/// Optional mode 1 parameters to add to the final restart sequence. A logical OR is applied to this value and /// the standard , , /// and bits. ///
return	void

SetLed() public method

Sets RGB values of the high intensity LED together (in one operation).

Automatically inverts the value, providing a natural behaviour where a higher number produces a higher LED intensity. Normally, when written as raw PWM values, the output is inverted due to common anode.

public SetLed ( int red, int green, int blue ) : void
red	int	Red value in the range 0-.
green	int	Green value in the range 0-.
blue	int	Blue value in the range 0-.
return	void