Run a high speed pulse width modulation (PWM) class that can output up to two channels of duty cycled PWM at a single frequency. More...

#include <pwm2.h>

Public Member Functions
void	Start (void)
	Start a PWM driver in a new cog. More...

void	Stop (void)
	Stop the PWM driver (if running) More...

void	SetPinX (const int pinX)
	Set a pin to PWM out on. More...

void	SetPinY (const int pinY)
	Set a pin to PWM out on. More...

void	SetDutyX (const int percent)
	Output a square wave with specified duty cycle. More...

void	SetDutyY (const int percent)
	Output a square wave with specified duty cycle. More...

void	SetFrequency (const int frequency)
	Set the frequency to output channel X and Y on. More...

Detailed Description

Run a high speed pulse width modulation (PWM) class that can output up to two channels of duty cycled PWM at a single frequency.

The two channels are channel X and channel Y.

Requires a cog to operate. No external hardware is required beyond whatever you are PWM'ing.

You can use this class to PWM H bridges, LEDs, audio, etc.

Todo:: (SRLM): figure out the maximum frequency (as a function of clock speed)

Member Function Documentation

void PWM2::SetDutyX ( const int percent)

inline

Output a square wave with specified duty cycle.

Parameters

percent The duty [0..100] to PWM. 0 is off, 100 is full on.

void PWM2::SetDutyY ( const int percent)

inline

Output a square wave with specified duty cycle.

You can change this during operation.

Parameters

percent The duty [0..100] to PWM. 0 is off, 100 is full on.

void PWM2::SetFrequency ( const int frequency)

inline

Set the frequency to output channel X and Y on.

Todo:: (SRLM): SetFrequency doesn't seem to actually change the frequency (at least once the cog is started...)

Parameters

frequency The frequency in Hz, [0..40000??]

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void PWM2::SetPinX ( const int pinX)

inline

Set a pin to PWM out on.

You can change this during operation.

Parameters

pinX	The I/O pin [0..31] to set the X channel on.

void PWM2::SetPinY ( const int pinY)

inline

Set a pin to PWM out on.

You can change this during operation.

Parameters

pinY	The I/O pin [0..31] to set the Y channel on.

void PWM2::Start ( void )

inline

Start a PWM driver in a new cog.

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void PWM2::Stop ( void )

inline

Stop the PWM driver (if running)

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The documentation for this class was generated from the following file:

pwm2.h

Public Member Functions

Detailed Description

Member Function Documentation