Inheritance diagram for MHV_Display_HD44780_Shift_Register:

Public Member Functions
	MHV_Display_HD44780_Shift_Register (MHV_DECLARE_PIN(data), MHV_DECLARE_PIN(enable), MHV_DECLARE_PIN(clock), uint8_t colCount, uint16_t rowCount, MHV_RingBuffer &txBuffers)
void	init (bool multiLine, bool bigFont, bool cursorOn, bool cursorBlink, bool left2right, bool scroll)
Protected Member Functions
void	pushBits (uint8_t byte, bool rs)
void	writeByte (uint8_t byte, bool rs)
uint8_t	readByte (bool rs)
bool	isBusy ()
void	delay (MHV_HD44780_COMMAND command)
Protected Attributes
volatile uint8_t *	_dataOut
uint8_t	_dataPin
volatile uint8_t *	_enableOut
uint8_t	_enablePin
volatile uint8_t *	_clockOut
uint8_t	_clockPin

Detailed Description

Constructor & Destructor Documentation

MHV_Display_HD44780_Shift_Register::MHV_Display_HD44780_Shift_Register	(	MHV_DECLARE_PIN(data)	,
		MHV_DECLARE_PIN(enable)	,
		MHV_DECLARE_PIN(clock)	,
		uint8_t	colCount,
		uint16_t	rowCount,
		MHV_RingBuffer &	txBuffers
	)

A class for operating HD44780 based LCD displays via a shift register such as a 74HC164

Parameters:

dataDir	A member of the MHV_PIN_* macro pin declaration for the data line of the shift register
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
enableDir	A member of the MHV_PIN_* macro pin declaration for the enable line of the shift register
enableOut	A member of the MHV_PIN_* macro
enableIn	A member of the MHV_PIN_* macro
enablePin	A member of the MHV_PIN_* macro
enablePinchangeInterrupt	A member of the MHV_PIN_* macro
clockDir	A member of the MHV_PIN_* macro pin declaration for the clock line of the shift register
clockOut	A member of the MHV_PIN_* macro
clockIn	A member of the MHV_PIN_* macro
clockPin	A member of the MHV_PIN_* macro
clockPinchangeInterrupt	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

void MHV_Display_HD44780_Shift_Register::delay ( MHV_HD44780_COMMAND command ) [protected, virtual]

Post-command delays

void MHV_Display_HD44780_Shift_Register::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