SerialLCD - LCD Serial with shift register

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LCD Serial with shift register

LCD_Serial.h@2:1094a2af1c40, 2011-02-12 (annotated)

Committer:: Suky
Date:: Sat Feb 12 22:29:22 2011 +0000
Revision:: 2:1094a2af1c40
Parent:: 1:edf1c14baee3

Who changed what in which revision?

User	Revision	Line number	New contents of line
Suky	0:562b0d48dfcf	1	/*
Suky	0:562b0d48dfcf	2	@file LCD_Serial.h
Suky	0:562b0d48dfcf	3	@version: 1.0
Suky	0:562b0d48dfcf	4
Suky	0:562b0d48dfcf	5	@web www.micros-designs.com.ar
Suky	0:562b0d48dfcf	6	@date 05/02/11
Suky	0:562b0d48dfcf	7
Suky	0:562b0d48dfcf	8	- Version Log --------------------------------------------------------------
Suky	0:562b0d48dfcf	9	* Fecha Autor Comentarios *
Suky	0:562b0d48dfcf	10	----------------------------------------------------------------------------
Suky	0:562b0d48dfcf	11	* 05/02/11 Suky Original *
Suky	0:562b0d48dfcf	12	----------------------------------------------------------------------------/
Suky	0:562b0d48dfcf	13	///////////////////////////////////////////////////////////////////////////
Suky	0:562b0d48dfcf	14	//// ////
Suky	0:562b0d48dfcf	15	//// ////
Suky	0:562b0d48dfcf	16	//// (C) Copyright 2011 www.micros-designs.com.ar ////
Suky	0:562b0d48dfcf	17	//// Este codigo puede ser usado, modificado y distribuido libremente ////
Suky	0:562b0d48dfcf	18	//// sin eliminar esta cabecera y sin garantia de ningun tipo. ////
Suky	0:562b0d48dfcf	19	//// ////
Suky	0:562b0d48dfcf	20	//// ////
Suky	0:562b0d48dfcf	21	///////////////////////////////////////////////////////////////////////////
Suky	0:562b0d48dfcf	22	#include "mbed.h"
Suky	0:562b0d48dfcf	23	#include "DataCGRAM.h"
Suky	0:562b0d48dfcf	24
Suky	0:562b0d48dfcf	25	class LCDSerial:public Stream {
Suky	0:562b0d48dfcf	26	public:
Suky	0:562b0d48dfcf	27	#define LCDClr 0x01 // Borra pantalla, cursor a Inicio
Suky	0:562b0d48dfcf	28	#define LCDHome 0x02 // Cursor a Inicio, DDRAM sin cambios
Suky	0:562b0d48dfcf	29	#define LCDIncCursor 0x06 // Modo incrementa cursor
Suky	0:562b0d48dfcf	30	#define LCDDecCursor 0x04 // Modo decrementa cursor
Suky	0:562b0d48dfcf	31	#define LCDOn 0x0C // Pantalla On
Suky	0:562b0d48dfcf	32	#define LCDOff 0x08 // Pantalla Off
Suky	0:562b0d48dfcf	33	#define LCDCursorOn 0x0E // Pantalla On, cursor On
Suky	0:562b0d48dfcf	34	#define LCDCursorOff 0x0C // Pantalla On, cursor Off
Suky	0:562b0d48dfcf	35	#define LCDCursorBlink 0x0F // Pantalla On, Cursor parpadeante
Suky	0:562b0d48dfcf	36	#define LCDCursorLeft 0x10 // Mueve cursor a la izquierda
Suky	0:562b0d48dfcf	37	#define LCDCursorRight 0x14 // Mueve cursor a la derecha
Suky	0:562b0d48dfcf	38	#define LCDDisplayLeft 0x18 // Mueve Display a la izquierda
Suky	0:562b0d48dfcf	39	#define LCDDisplayRight 0x1C // Mueve Display a la Derecha
Suky	0:562b0d48dfcf	40	/** Crea LCD interface
Suky	0:562b0d48dfcf	41	*
Suky	0:562b0d48dfcf	42	* @param DATA
Suky	0:562b0d48dfcf	43	* @param CLK
Suky	0:562b0d48dfcf	44	* @param E
Suky	0:562b0d48dfcf	45	*/
Suky	1:edf1c14baee3	46	LCDSerial(PinName DATA,PinName CLK,PinName E,PinName BACK=NC);
Suky	0:562b0d48dfcf	47	void vGotoxy(char x,char y);
Suky	0:562b0d48dfcf	48	void vSetBacklight(bool Value);
Suky	0:562b0d48dfcf	49	void vPutc(char Data);
Suky	0:562b0d48dfcf	50	void vCommand(char Data);
Suky	0:562b0d48dfcf	51	#if DOXYGEN_ONLY
Suky	0:562b0d48dfcf	52	/** Escribe un caracter en LCD
Suky	0:562b0d48dfcf	53	*
Suky	0:562b0d48dfcf	54	* @param c El caracter a escribir en LCD
Suky	0:562b0d48dfcf	55	*/
Suky	0:562b0d48dfcf	56	int putc(int c);
Suky	0:562b0d48dfcf	57
Suky	0:562b0d48dfcf	58	/** Escribe un string formateado en LCD
Suky	0:562b0d48dfcf	59	*
Suky	0:562b0d48dfcf	60	* @param format A printf-style format string, followed by the
Suky	0:562b0d48dfcf	61	* variables to use in formating the string.
Suky	0:562b0d48dfcf	62	*/
Suky	0:562b0d48dfcf	63	int printf(const char* format, ...);
Suky	0:562b0d48dfcf	64	#endif
Suky	0:562b0d48dfcf	65	private:
Suky	0:562b0d48dfcf	66	#define LcdType 2 // 0=5x7, 1=5x10, 2=varias lineas
Suky	0:562b0d48dfcf	67	#define LCD_LINE_1_ADDRESS 0x00
Suky	0:562b0d48dfcf	68	#define LCD_LINE_2_ADDRESS 0x40
Suky	0:562b0d48dfcf	69	#define LCD_LINE_3_ADDRESS 0x14
Suky	0:562b0d48dfcf	70	#define LCD_LINE_4_ADDRESS 0x54
Suky	0:562b0d48dfcf	71	#define LCD_COMMAND 0
Suky	0:562b0d48dfcf	72	#define LCD_DATA 1
Suky	0:562b0d48dfcf	73	DigitalOut _DATA,_CLK,_E,_BACK;
Suky	0:562b0d48dfcf	74	char NLinea;
Suky	0:562b0d48dfcf	75	// Stream implementation functions
Suky	0:562b0d48dfcf	76	virtual int _putc(int value);
Suky	0:562b0d48dfcf	77	virtual int _getc();
Suky	0:562b0d48dfcf	78	virtual void vWriteLCD(char Data,char Type);
Suky	0:562b0d48dfcf	79	virtual void vSetCGRAM(const char *Data);
Suky	0:562b0d48dfcf	80	};
Suky	0:562b0d48dfcf	81
Suky	0:562b0d48dfcf	82
Suky	0:562b0d48dfcf	83	LCDSerial::LCDSerial(PinName DATA,PinName CLK,PinName E,PinName BACK)
Suky	0:562b0d48dfcf	84	:_DATA(DATA),_CLK(CLK),_E(E),_BACK(BACK){
Suky	0:562b0d48dfcf	85	char Temp;
Suky	0:562b0d48dfcf	86
Suky	0:562b0d48dfcf	87	NLinea=1;
Suky	0:562b0d48dfcf	88	wait_ms(15);
Suky	0:562b0d48dfcf	89	_DATA=0;
Suky	0:562b0d48dfcf	90	_CLK=0;
Suky	0:562b0d48dfcf	91	_E=0;
Suky	0:562b0d48dfcf	92	_BACK=0;
Suky	0:562b0d48dfcf	93
Suky	0:562b0d48dfcf	94	for(int k=0;k<8;k++){
Suky	0:562b0d48dfcf	95	_CLK=1;
Suky	0:562b0d48dfcf	96	wait_us(1);
Suky	0:562b0d48dfcf	97	_CLK=0;
Suky	0:562b0d48dfcf	98	wait_us(1);
Suky	0:562b0d48dfcf	99	}
Suky	0:562b0d48dfcf	100
Suky	0:562b0d48dfcf	101	Temp=0x03;
Suky	0:562b0d48dfcf	102	for(int k=0;k<8;k++){
Suky	0:562b0d48dfcf	103	_DATA=!!(Temp&0x80);
Suky	0:562b0d48dfcf	104	Temp<<=1;
Suky	0:562b0d48dfcf	105	_CLK=1;
Suky	0:562b0d48dfcf	106	wait_us(1);
Suky	0:562b0d48dfcf	107	_CLK=0;
Suky	0:562b0d48dfcf	108	}
Suky	0:562b0d48dfcf	109	for(int k=0;k<3;k++){
Suky	0:562b0d48dfcf	110	_E=1;
Suky	0:562b0d48dfcf	111	wait_ms(2);
Suky	0:562b0d48dfcf	112	_E=0;
Suky	0:562b0d48dfcf	113	wait_ms(2);
Suky	0:562b0d48dfcf	114	}
Suky	0:562b0d48dfcf	115	Temp=0x02;
Suky	0:562b0d48dfcf	116	for(int k=0;k<8;k++){
Suky	0:562b0d48dfcf	117	_DATA=!!(Temp&0x80);
Suky	0:562b0d48dfcf	118	Temp<<=1;
Suky	0:562b0d48dfcf	119	_CLK=1;
Suky	0:562b0d48dfcf	120	wait_us(1);
Suky	0:562b0d48dfcf	121	_CLK=0;
Suky	0:562b0d48dfcf	122	}
Suky	0:562b0d48dfcf	123	_E=1;
Suky	0:562b0d48dfcf	124	wait_us(1);
Suky	0:562b0d48dfcf	125	_E=0;
Suky	0:562b0d48dfcf	126
Suky	0:562b0d48dfcf	127	vWriteLCD(0x20 \| (LcdType<<2),LCD_COMMAND); // Tipo display.-
Suky	0:562b0d48dfcf	128	wait_ms(2);
Suky	0:562b0d48dfcf	129	vWriteLCD(0x01,LCD_COMMAND); // Borramos display.-
Suky	0:562b0d48dfcf	130	wait_ms(2);
Suky	0:562b0d48dfcf	131	vWriteLCD(0x06,LCD_COMMAND); // Incrementa cursor.-
Suky	0:562b0d48dfcf	132	vWriteLCD(0x0C,LCD_COMMAND); // Encendemos display.-
Suky	0:562b0d48dfcf	133	vSetCGRAM(CGRAM_DATA); // Guardamos data en CGRAM.-
Suky	0:562b0d48dfcf	134	}
Suky	0:562b0d48dfcf	135
Suky	0:562b0d48dfcf	136	void LCDSerial::vWriteLCD(char Data,char Type){
Suky	0:562b0d48dfcf	137	char data_temp;
Suky	0:562b0d48dfcf	138
Suky	0:562b0d48dfcf	139
Suky	0:562b0d48dfcf	140	wait_us(100);
Suky	0:562b0d48dfcf	141
Suky	0:562b0d48dfcf	142	data_temp=(Data>>4); // Rs es bit 4
Suky	0:562b0d48dfcf	143	if(Type){
Suky	0:562b0d48dfcf	144	data_temp\|=0x10;
Suky	0:562b0d48dfcf	145	}
Suky	0:562b0d48dfcf	146	for(int i=0;i<8;i++){
Suky	0:562b0d48dfcf	147	_DATA=!!(data_temp & 0x80);
Suky	0:562b0d48dfcf	148	data_temp<<=1;
Suky	0:562b0d48dfcf	149	_CLK=1;
Suky	0:562b0d48dfcf	150	wait_us(1);
Suky	0:562b0d48dfcf	151	_CLK=0;
Suky	0:562b0d48dfcf	152	}
Suky	0:562b0d48dfcf	153
Suky	0:562b0d48dfcf	154	_E = 1;
Suky	0:562b0d48dfcf	155	wait_us(1);
Suky	0:562b0d48dfcf	156	_E = 0;
Suky	0:562b0d48dfcf	157	data_temp=(Data&0x0F); // Rs es bit 4
Suky	0:562b0d48dfcf	158	if(Type){
Suky	0:562b0d48dfcf	159	data_temp\|=0x10;
Suky	0:562b0d48dfcf	160	}
Suky	0:562b0d48dfcf	161	for(int i=0;i<8;i++){
Suky	0:562b0d48dfcf	162	_DATA=!!(data_temp & 0x80);
Suky	0:562b0d48dfcf	163	data_temp<<=1;
Suky	0:562b0d48dfcf	164	_CLK=1;
Suky	0:562b0d48dfcf	165	wait_us(1);
Suky	0:562b0d48dfcf	166	_CLK=0;
Suky	0:562b0d48dfcf	167	}
Suky	0:562b0d48dfcf	168	_E = 1;
Suky	0:562b0d48dfcf	169	wait_us(1);
Suky	0:562b0d48dfcf	170	_E = 0;
Suky	0:562b0d48dfcf	171
Suky	0:562b0d48dfcf	172	}
Suky	0:562b0d48dfcf	173
Suky	0:562b0d48dfcf	174	void LCDSerial::vGotoxy(char x,char y){
Suky	0:562b0d48dfcf	175	char Direccion;
Suky	0:562b0d48dfcf	176
Suky	0:562b0d48dfcf	177	switch(y){
Suky	0:562b0d48dfcf	178	case 1:Direccion = LCD_LINE_1_ADDRESS;NLinea=1;break;
Suky	0:562b0d48dfcf	179	case 2:Direccion = LCD_LINE_2_ADDRESS;NLinea=2;break;
Suky	0:562b0d48dfcf	180	case 3:Direccion = LCD_LINE_3_ADDRESS;NLinea=3;break;
Suky	0:562b0d48dfcf	181	case 4:Direccion = LCD_LINE_4_ADDRESS;NLinea=4;break;
Suky	0:562b0d48dfcf	182	default:Direccion = LCD_LINE_1_ADDRESS;NLinea=1;break;
Suky	0:562b0d48dfcf	183	}
Suky	0:562b0d48dfcf	184
Suky	0:562b0d48dfcf	185	Direccion+=x-1;
Suky	0:562b0d48dfcf	186	vWriteLCD(0x80\|Direccion,LCD_COMMAND);
Suky	0:562b0d48dfcf	187	}
Suky	0:562b0d48dfcf	188
Suky	0:562b0d48dfcf	189	int LCDSerial::_getc(){
Suky	0:562b0d48dfcf	190	return(-1);
Suky	0:562b0d48dfcf	191	}
Suky	0:562b0d48dfcf	192
Suky	0:562b0d48dfcf	193	int LCDSerial::_putc(int value){
Suky	0:562b0d48dfcf	194
Suky	0:562b0d48dfcf	195	switch(value){
Suky	0:562b0d48dfcf	196	case '\f':
Suky	0:562b0d48dfcf	197	vWriteLCD(0x01,LCD_COMMAND);
Suky	0:562b0d48dfcf	198	NLinea=1;
Suky	0:562b0d48dfcf	199	wait_ms(2);
Suky	0:562b0d48dfcf	200	break;
Suky	0:562b0d48dfcf	201	case '\n':
Suky	0:562b0d48dfcf	202	vGotoxy(1,++NLinea);
Suky	0:562b0d48dfcf	203	break;
Suky	0:562b0d48dfcf	204	default:
Suky	0:562b0d48dfcf	205	vWriteLCD(value,LCD_DATA);
Suky	0:562b0d48dfcf	206	}
Suky	0:562b0d48dfcf	207
Suky	0:562b0d48dfcf	208	return(value);
Suky	0:562b0d48dfcf	209	}
Suky	0:562b0d48dfcf	210
Suky	0:562b0d48dfcf	211	void LCDSerial::vSetBacklight(bool Value){
Suky	0:562b0d48dfcf	212	_BACK=Value;
Suky	0:562b0d48dfcf	213	}
Suky	0:562b0d48dfcf	214
Suky	0:562b0d48dfcf	215	void LCDSerial::vSetCGRAM(const char *Data){
Suky	0:562b0d48dfcf	216
Suky	0:562b0d48dfcf	217	vWriteLCD(0x40,LCD_COMMAND);
Suky	0:562b0d48dfcf	218	for(int k=0;k<64;k++){
Suky	0:562b0d48dfcf	219	vWriteLCD(*Data++,LCD_DATA);
Suky	0:562b0d48dfcf	220	}
Suky	0:562b0d48dfcf	221	}
Suky	0:562b0d48dfcf	222
Suky	0:562b0d48dfcf	223	void LCDSerial::vPutc(char Data){
Suky	0:562b0d48dfcf	224	_putc(Data);
Suky	0:562b0d48dfcf	225	}
Suky	0:562b0d48dfcf	226
Suky	0:562b0d48dfcf	227	void LCDSerial::vCommand(char Data){
Suky	0:562b0d48dfcf	228	vWriteLCD(Data,LCD_COMMAND);
Suky	0:562b0d48dfcf	229	}

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Type:	Library
Created:	05 Feb 2011
Imports:	140
Forks:	0
Commits:	3
Dependents:	0
Dependencies:	0
Followers:	5

LCD_Serial.h@2:1094a2af1c40, 2011-02-12 (annotated)

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