JMotorDriverEsp32L293 Class Reference

L293 motor driver chip: https://www.ti.com/lit/ds/symlink/l293.pdf also works with L298 drivers or anything with two direction pins and an enable pin! More...

#include <JMotorDriverEsp32L293.h>

Inheritance diagram for JMotorDriverEsp32L293:

Collaboration diagram for JMotorDriverEsp32L293:

Public Member Functions
	JMotorDriverEsp32L293 (byte _ch, byte _enablePin, byte _i1, byte _i2, bool _breakOn=true, bool _breakWhenDisabled=false, bool _reverse=false, int _freq=2000, int _resolution=12)
	constructor, sets pins and other settings
bool	set (float val)
	set motor power
bool	setEnable (bool _enable)
	use to enable or disable a motor, and sets up pin states
bool	getEnable ()
	get the enable state of the driver
float	getMaxRange ()
	high end of the range
float	getMinRange ()
	low end of the range
Public Member Functions inherited from JMotorDriver
bool	enable ()
	enable motor
bool	disable ()
	disable motor

Public Attributes
JMotorDriverEsp32PWM	pwmDriver
bool	breakOn
	add extra resistance to motor when set to 0 power (by shorting motor terminals)
bool	reverse
	reverse direction of driver

Detailed Description

L293 motor driver chip: https://www.ti.com/lit/ds/symlink/l293.pdf also works with L298 drivers or anything with two direction pins and an enable pin!

Note

platform: ESP32

Constructor & Destructor Documentation

JMotorDriverEsp32L293()

JMotorDriverEsp32L293::JMotorDriverEsp32L293 ( byte  _ch, byte  _enablePin, byte  _i1, byte  _i2, bool  _breakOn = true, bool  _breakWhenDisabled = false, bool  _reverse = false, int  _freq = 2000, int  _resolution = 12  )

inline

constructor, sets pins and other settings

Parameters

_ch	ledc channel (must be unique for each driver)
_enablePin	enable(speed) pin on driver
_i1	input pin 1 (direction)
_i2	input pin 2 (direction)
_breakOn	= true: if true (default), add extra resistance to motor when set to 0 power (by shorting motor terminals)
_breakWhenDisabled	= false: if false (default) turn off break when disabled, if true, keep electrically breaking
_reverse	(bool) default=false, reverse direction of driver
_freq	<= int(80E6 / 2^resolution), 2kHz default and recommended for motor PWM
_resolution	bits of resolution, tradeoff with frequency, default 12

Member Function Documentation

getEnable()

bool JMotorDriverEsp32L293::getEnable ( )

inlinevirtual

get the enable state of the driver

Return values

(bool)

true if enabled, false if disabled

Reimplemented from JMotorDriver.

getMaxRange()

float JMotorDriverEsp32L293::getMaxRange ( )

inlinevirtual

high end of the range

Note

usually 1.0

Return values

(float)

maxRange

Reimplemented from JMotorDriver.

getMinRange()

float JMotorDriverEsp32L293::getMinRange ( )

inlinevirtual

low end of the range

Note

usually -1.0, if 0, that indicates a motor controller with no reverse function

Return values

(float)

minRange

Reimplemented from JMotorDriver.

set()

bool JMotorDriverEsp32L293::set ( float  val )

inlinevirtual

set motor power

Note

val should be between getMinRange and getMaxRange, but constrained internally

Parameters

val	(float) val

Return values

(bool)

false if at end of power range, true otherwise

Reimplemented from JMotorDriver.

setEnable()

bool JMotorDriverEsp32L293::setEnable ( bool  _enable )

inlinevirtual

use to enable or disable a motor, and sets up pin states

Note

setEnable(true) must be called before a motor driver will activate

Parameters

_enable

(bool) true=enable, false=disable

Return values

(bool)

true if state changed, false if state already set

Reimplemented from JMotorDriver.

Member Data Documentation

breakOn

bool JMotorDriverEsp32L293::breakOn

add extra resistance to motor when set to 0 power (by shorting motor terminals)

pwmDriver

JMotorDriverEsp32PWM JMotorDriverEsp32L293::pwmDriver

reverse

bool JMotorDriverEsp32L293::reverse

reverse direction of driver

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

• src/JMotorDriver/JMotorDriverEsp32L293.h