#include <MHV_Display_HD44780_Direct_Connect.h>

Inheritance diagram for MHV_Display_HD44780_Direct_Connect:

Public Member Functions
	MHV_Display_HD44780_Direct_Connect (volatile uint8_t dataDir, volatile uint8_t dataOut, volatile uint8_t dataIn, uint8_t dataPin, int8_t dataPinchangeInterrupt, volatile uint8_t controlDir, volatile uint8_t controlOut, volatile uint8_t controlIn, uint8_t controlPin, int8_t controlPinchangeInterrupt, volatile uint8_t visualDir, volatile uint8_t visualOut, volatile uint8_t visualIn, uint8_t visualPin, int8_t visualPinchangeInterrupt, uint8_t colCount, uint16_t rowCount, MHV_RingBuffer txBuffers)
	MHV_Display_HD44780_Direct_Connect (volatile uint8_t dataDir, volatile uint8_t dataOut, volatile uint8_t dataIn, uint8_t dataPin, int8_t dataPinchangeInterrupt, volatile uint8_t controlDir, volatile uint8_t controlOut, volatile uint8_t controlIn, uint8_t controlPin, int8_t controlPinchangeInterrupt, 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	(	volatile uint8_t *	dataDir,
		volatile uint8_t *	dataOut,
		volatile uint8_t *	dataIn,
		uint8_t	dataPin,
		int8_t	dataPinchangeInterrupt,
		volatile uint8_t *	controlDir,
		volatile uint8_t *	controlOut,
		volatile uint8_t *	controlIn,
		uint8_t	controlPin,
		int8_t	controlPinchangeInterrupt,
		volatile uint8_t *	visualDir,
		volatile uint8_t *	visualOut,
		volatile uint8_t *	visualIn,
		uint8_t	visualPin,
		int8_t	visualPinchangeInterrupt,
		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:

dataDir	A member of the MHV_PIN_* macro pin declaration for the first bit of the data port DB4..DB7 (will use a nibble starting at this bit)
dataOut	A member of the MHV_PIN_* macro
dataIn	A member of the MHV_PIN_* macro
dataPin	A member of the MHV_PIN_* macro
dataPinchangeInterrupt	A member of the MHV_PIN_* macro
controlDir	A member of the MHV_PIN_* macro pin declaration for the first bit of the control port (will use 3 bits)
controlOut	A member of the MHV_PIN_* macro
controlIn	A member of the MHV_PIN_* macro
controlPin	A member of the MHV_PIN_* macro
controlPinchangeInterrupt	A member of the MHV_PIN_* macro
visualDir	A member of the MHV_PIN_* macro pin declaration for the first bit of the visual port (will use 2 bits)
visualOut	A member of the MHV_PIN_* macro
visualIn	A member of the MHV_PIN_* macro
visualPin	A member of the MHV_PIN_* macro
visualPinchangeInterrupt	A member of the MHV_PIN_* macro
colCount	the number of columns on the display
rowCount	the number of rows on the display
txBuffers	buffers for async writing

Definition at line 89 of file MHV_Display_HD44780_Direct_Connect.cpp.

MHV_Display_HD44780_Direct_Connect::MHV_Display_HD44780_Direct_Connect	(	volatile uint8_t *	dataDir,
		volatile uint8_t *	dataOut,
		volatile uint8_t *	dataIn,
		uint8_t	dataPin,
		int8_t	dataPinchangeInterrupt,
		volatile uint8_t *	controlDir,
		volatile uint8_t *	controlOut,
		volatile uint8_t *	controlIn,
		uint8_t	controlPin,
		int8_t	controlPinchangeInterrupt,
		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:

dataDir	A member of the MHV_PIN_* macro pin declaration for the first bit of the data port DB4..DB7 (will use a nibble starting at this bit)
dataOut	A member of the MHV_PIN_* macro
dataIn	A member of the MHV_PIN_* macro
dataPin	A member of the MHV_PIN_* macro
dataPinchangeInterrupt	A member of the MHV_PIN_* macro
controlDir	A member of the MHV_PIN_* macro pin declaration for the first bit of the control port (will use 3 bits)
controlOut	A member of the MHV_PIN_* macro
controlIn	A member of the MHV_PIN_* macro
controlPin	A member of the MHV_PIN_* macro
controlPinchangeInterrupt	A member of the MHV_PIN_* macro
colCount	the number of columns on the display
rowCount	the number of rows on the display
txBuffers	buffers for async writing

Definition at line 139 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 299 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