#include <MHV_Display_HD44780_Direct_Connect.h>

Inheritance diagram for MHV_Display_HD44780_Direct_Connect:

Public Member Functions
	MHV_Display_HD44780_Direct_Connect (MHV_DECLARE_PIN(data), MHV_DECLARE_PIN(control), MHV_DECLARE_PIN(visual), uint8_t colCount, uint16_t rowCount, MHV_RingBuffer &txBuffers)
	MHV_Display_HD44780_Direct_Connect (MHV_DECLARE_PIN(data), MHV_DECLARE_PIN(control), uint8_t colCount, uint16_t rowCount, MHV_RingBuffer &txBuffers)
void	setBacklight (uint8_t value)
void	setContrast (uint8_t value)
void	tickPWM ()
void	init (bool multiLine, bool bigFont, bool cursorOn, bool cursorBlink, bool left2right, bool scroll)
Protected Member Functions
void	writeByte (uint8_t byte, bool rs)
void	writeNibble (uint8_t nibble, bool rs)
uint8_t	readByte (bool rs)
uint8_t	readNibble (bool rs)
bool	isBusy ()
void	delay (MHV_HD44780_COMMAND command)
Protected Attributes
volatile uint8_t *	_dataDir
volatile uint8_t *	_dataOut
volatile uint8_t *	_dataIn
uint8_t	_dataPin
uint8_t	_dataMask
volatile uint8_t *	_controlOut
uint8_t	_controlPin
volatile uint8_t *	_visualOut
uint8_t	_visualPin
uint8_t	_brightness
uint8_t	_contrast

Detailed Description

Definition at line 32 of file MHV_Display_HD44780_Direct_Connect.h.

Constructor & Destructor Documentation

MHV_Display_HD44780_Direct_Connect::MHV_Display_HD44780_Direct_Connect	(	MHV_DECLARE_PIN(data)	,
		MHV_DECLARE_PIN(control)	,
		MHV_DECLARE_PIN(visual)	,
		uint8_t	colCount,
		uint16_t	rowCount,
		MHV_RingBuffer &	txBuffers
	)

A class for operating HD44780 based LCD displays (and compatible) in 4 bit mode Data port layout: Bit description n DB4 n+1 DB5 n+2 DB6 n+3 DB7

Control port layout: n RS Register Select n+1 R/W Read/Write n+2 E Enable

Visual port layout: n Contrast (V0) n+1 LED Positive

Parameters:

data	pin declaration for the first bit of the data port DB4..DB7 (will use a nibble starting at this bit)
control	pin declaration for the first bit of the control port (will use 3 bits)
visual	pin declaration for the first bit of the visual port (will use 2 bits)
colCount	the number of columns on the display
rowCount	the number of rows on the display
txBuffers	buffers for async writing

Definition at line 77 of file MHV_Display_HD44780_Direct_Connect.cpp.

MHV_Display_HD44780_Direct_Connect::MHV_Display_HD44780_Direct_Connect	(	MHV_DECLARE_PIN(data)	,
		MHV_DECLARE_PIN(control)	,
		uint8_t	colCount,
		uint16_t	rowCount,
		MHV_RingBuffer &	txBuffers
	)

An alternate constructor without visual pins - if this constructor is used, tickPWM behaviour is undefined and will like overwrite random bits of memory, so don't call it

Parameters:

data	pin declaration for the first bit of the data port DB4..DB7 (will use a nibble starting at this bit)
control	pin declaration for the first bit of the control port (will use 3 bits)
colCount	the number of columns on the display
rowCount	the number of rows on the display
txBuffers	buffers for async writing

Definition at line 119 of file MHV_Display_HD44780_Direct_Connect.cpp.

Member Function Documentation

void MHV_Display_HD44780_Direct_Connect::delay ( MHV_HD44780_COMMAND command ) [protected, virtual]

Delay function No delays required as we can check whether the display is busy

Implements MHV_Display_HD44780.

Definition at line 279 of file MHV_Display_HD44780_Direct_Connect.cpp.

void MHV_Display_HD44780_Direct_Connect::init	(	bool	multiLine,
		bool	bigFont,
		bool	cursorOn,
		bool	cursorBlink,
		bool	left2right,
		bool	scroll
	)

Initialise the display

Parameters:

multiLine	true if there is more than 1 line
bigFont	true to use 5x11 fonts, false for 5x8
cursorOn	turn the curson on
cursorBlink	blink the cursor
left2right	true for text reading left to right
scroll	true to scroll text rather than moving the cursor