CJQ4435 Class Reference

C++ API for the CJQ4435 MOSFET. More...

Detailed Description

• ID: cjq4435
• Name: Grove MOSFET
• Other Names: CJQ4435
• Category: electric
• Manufacturer: seeed
• Connection: gpio pwm

UPM module for the CJQ4435 MOSFET. It was developed using the Grove MOSFET module. A MOSFET is like a switch, but it can switch much faster than a mechanical relay. Here, we implement support via MRAA's PWM (Pulse Width Modulation) functions. Please note, that the available periods will vary depending on the capabilities of your device.

  // Instantiate a CJQ4435 MOSFET on a PWM capable digital pin D3
  upm::CJQ4435* mosfet = new upm::CJQ4435(3);
  
  mosfet->setPeriodMS(10);
  mosfet->enable(true);

  while (shouldRun)
    {
      // start with a duty cycle of 0.0 (off) and increment to 1.0 (on)
      for (float i=0.0; i <= 1.0; i+=0.1)
        {
          mosfet->setDutyCycle(i);
          usleep(100000);
        }
      sleep(1);
      // Now take it back down
      // start with a duty cycle of 1.0 (on) and decrement to 0.0 (off)
      for (float i=1.0; i >= 0.0; i-=0.1)
        {
          mosfet->setDutyCycle(i);
          usleep(100000);
        }
      sleep(1);
    }

Public Member Functions
	CJQ4435 (int pin)
	~CJQ4435 ()
void	setPeriodUS (int us)
void	setPeriodMS (int ms)
void	setPeriodSeconds (float seconds)
void	enable (bool enable)
void	setDutyCycle (float dutyCycle)
void	on ()
void	off ()

Constructor & Destructor Documentation

CJQ4435

(

int

pin

)

CJQ4435 constructor

Parameters

pin	digital pin to use - this pin must be PWM capable

~CJQ4435

(

)

CJQ4435 Destructor

Member Function Documentation

void setPeriodUS

(

int

us

)

set the period in microseconds

Parameters

us	period in microseconds

void setPeriodMS

(

int

ms

)

set the period in milliseconds

Parameters

ms	period in milliseconds

void setPeriodSeconds

(

float

seconds

)

set the period in seconds

Parameters

seconds

period in seconds

void enable

(

bool

enable

)

enable output

Parameters

enable

enable PWM output if true, disable if false

void setDutyCycle

(

float

dutyCycle

)

set the duty cycle. The duty cycle is a floating point number between 0.0 (always off) to 1.0 (always on). It represents how much time as a percentage, per period, that the output will be driven high.

Parameters

dutyCycle

the duty cycle to use

void on

(

)

a shortcut for turning the output to continuous on (high)

void off

(

)

a shortcut for turning the output to continuous off (low)

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

• /var/lib/jenkins/workspace/upm-doc-stable/src/cjq4435/cjq4435.h
• /var/lib/jenkins/workspace/upm-doc-stable/src/cjq4435/cjq4435.cxx