Lcm1602 Class Reference

C++ API for LCM1602 i2c controller for HD44780 based displays. More...

Detailed Description

This supports all sizes of HD44780 displays from 16x2 to 4x20, the controller has no idea of the actual display hardware so will let you write further than you can see. These displays with such controllers are available from various manufacturers with different i2c addresses. The adafruit TC1602A-01T seems to the best documented example.

    upm::Lcm1602* lcd = new upm::Lcm1602(0, 0x27);
    lcd->setCursor(0,0);
    lcd->write("Hello World");

Public Member Functions
	Lcm1602 (int bus, int address)
	~Lcm1602 ()
mraa_result_t	write (std::string msg)
mraa_result_t	setCursor (int row, int column)
mraa_result_t	clear ()
mraa_result_t	home ()
Public Member Functions inherited from I2CLcd
	I2CLcd (int bus, int lcdAddress)
mraa_result_t	write (int x, int y, std::string msg)
virtual mraa_result_t	i2Cmd (mraa_i2c_context ctx, uint8_t value)
virtual mraa_result_t	i2cReg (mraa_i2c_context ctx, int deviceAdress, int addr, uint8_t data)
virtual mraa_result_t	i2cData (mraa_i2c_context ctx, uint8_t value)
mraa_result_t	close ()
std::string	name ()

Additional Inherited Members
Protected Attributes inherited from I2CLcd
std::string	m_name
int	m_lcd_control_address
int	m_bus
mraa_i2c_context	m_i2c_lcd_control

Constructor & Destructor Documentation

Lcm1602	(	int	bus,
		int	address
	)

Lcm1602 Constructor, calls libmraa initialisation functions

Parameters

bus	i2c bus to use
address	the slave address the lcd is registered on

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~Lcm1602

(

)

Lcm1602 Destructor

Member Function Documentation

mraa_result_t write ( std::string  msg )

virtual

Write a string to LCD

Parameters

msg	The std::string to write to display, note only ascii chars are supported

Returns

Result of operation

Implements I2CLcd.

mraa_result_t setCursor ( int  row, int  column  )

virtual

Set cursor to a coordinate

Parameters

row	The row to set cursor to
column	The column to set cursor to

Returns

Result of operation

Implements I2CLcd.

mraa_result_t clear ( )

virtual

Clear display from characters

Returns

Result of operatio

Implements I2CLcd.

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mraa_result_t home ( )

virtual

Return to coordinate 0,0

Returns

Result of operation

Implements I2CLcd.

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Inheritance diagram for Lcm1602:

Collaboration diagram for Lcm1602:

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

• /var/lib/jenkins/workspace/upm-doc/src/lcd/lcm1602.h
• /var/lib/jenkins/workspace/upm-doc/src/lcd/lcm1602.cxx