PWM Class Reference

#include <lpc_pwm.hpp>

Public Types
enum	pwmType {   pwm1 =0, pwm2 =1, pwm3 =2, pwm4 =3,   pwm5 =4, pwm6 =5 }

Public Member Functions
	PWM (pwmType pwm, unsigned int frequencyHz=50)
	~PWM ()
	Destructor that will destroy PWM configuration. More...
bool	set (float percent)

Detailed Description

LPC PWM class. Example:

PWM pwm2(PWM::pwm2, 50);
pwm2.set(10);
pwm2.set(5.0);

Member Enumeration Documentation

enum PWM::pwmType

Enumerator
pwm1	P2.0.
pwm2	P2.1.
pwm3	P2.2.
pwm4	P2.3.
pwm5	P2.4.
pwm6	P2.5.

Constructor & Destructor Documentation

PWM::PWM	(	pwmType	pwm,
		unsigned int	frequencyHz = 50
	)

Initialize a PWM

Parameters

frequencyHz

The frequency of the PWM

Note

Frequency is only initialized the first time this class is constructed. Once it is initialized, it cannot be set or changed when more objects are constructed.

PWM::~PWM

(

)

Destructor that will destroy PWM configuration.

Member Function Documentation

bool PWM::set

(

float

percent

)

Sets the PWM based on the percentage. If 50Hz Servo PWM was setup, then you can use the following :

• Left : set(5.0); // 5.0 % of 20ms = 1.0ms
• Neutral : set(7.5); // 7.5 % of 20ms = 1.5ms
• Right : set(10.0); // 10 % of 20ms = 2.0ms

You can use micro-steps to position the servo motor by using set(5.1), set(5.2) ... set(7.4) etc.

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

• /var/www/html/SJSU-DEV-Linux/firmware/default/lib/L2_Drivers/lpc_pwm.hpp
• /var/www/html/SJSU-DEV-Linux/firmware/default/lib/L2_Drivers/src/lpc_pwm.cpp