SoftwarePWM Class Reference

#include <SoftwarePWM.h>

Public Member Functions
void	Disable ()
void	Enable (int StartPos, int Period)
void	SetPosition (int NewPos)
	SoftwarePWM (PinName Pin)

Private Member Functions
void	EndPulse ()
void	StartPulse ()

Private Attributes
int	Position
Ticker	Pulse
Timeout	PulseStop
DigitalOut	SoftwarePWMPin

Detailed Description

Class to control a servo on any pin, without using pwm

Example:

// Keep sweeping servo from left to right
#include "mbed.h"
#include "Servo.h"

Servo Servo1(p20);

Servo1.Enable(1500,20000);

while(1) {
    for (int pos = 1000; pos < 2000; pos += 25) {
        Servo1.SetPosition(pos);
        wait_ms(20);
    }
    for (int pos = 2000; pos > 1000; pos -= 25) {
        Servo1.SetPosition(pos);
        wait_ms(20);
    }
}

Definition at line 55 of file SoftwarePWM.h.

Constructor & Destructor Documentation

SoftwarePWM::SoftwarePWM

(

PinName

Pin

)

Create a new SoftwarePWM object on any mbed pin

Parameters

Pin	Pin on mbed to connect PWM device to

Definition at line 4 of file SoftwarePWM.cpp.

Member Function Documentation

void SoftwarePWM::Disable

(

)

Disable the PWM. After disabling the PWM won't get any signal anymore

Definition at line 35 of file SoftwarePWM.cpp.

void SoftwarePWM::Enable	(	int	StartPos,
		int	Period
	)

Enable the PWM. Without enabling the PWM won't be running. Startposition and period both in us.

Parameters

StartPos	The position of the PWM to start (us)
Period	The time between every pulse. 20000 us = 50 Hz(standard) (us)

Definition at line 29 of file SoftwarePWM.cpp.

void SoftwarePWM::EndPulse ( )

private

Definition at line 24 of file SoftwarePWM.cpp.

void SoftwarePWM::SetPosition

(

int

NewPos

)

Change the position of the PWM. Position in us

Parameters

NewPos

The new value of the PWM position (us)

Definition at line 6 of file SoftwarePWM.cpp.

void SoftwarePWM::StartPulse ( )

private

Definition at line 11 of file SoftwarePWM.cpp.

Member Data Documentation

int SoftwarePWM::Position

private

Definition at line 87 of file SoftwarePWM.h.

Ticker SoftwarePWM::Pulse

private

Definition at line 89 of file SoftwarePWM.h.

Timeout SoftwarePWM::PulseStop

private

Definition at line 90 of file SoftwarePWM.h.

DigitalOut SoftwarePWM::SoftwarePWMPin

private

Definition at line 88 of file SoftwarePWM.h.

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

• SoftwarePWM.h
• SoftwarePWM.cpp