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ISR()
{
}
/* 0x3F SREG */
/* Interrupt vectors */
/* External Interrupt Request 0 */
#define INT0_vect _VECTOR(1)
#define SIG_INTERRUPT0 _VECTOR(1)
/* External Interrupt Request 1 */
#define INT1_vect _VECTOR(2)
#define SIG_INTERRUPT1 _VECTOR(2)
/* External Interrupt Request 2 */
#define INT2_vect _VECTOR(3)
#define SIG_INTERRUPT2 _VECTOR(3)
/* Timer/Counter2 Compare Match */
#define TIMER2_COMP_vect _VECTOR(4)
#define SIG_OUTPUT_COMPARE2 _VECTOR(4)
/* Timer/Counter2 Overflow */
#define TIMER2_OVF_vect _VECTOR(5)
#define SIG_OVERFLOW2 _VECTOR(5)
/* Timer/Counter1 Capture Event */
#define TIMER1_CAPT_vect _VECTOR(6)
#define SIG_INPUT_CAPTURE1 _VECTOR(6)
/* Timer/Counter1 Compare Match A */
#define TIMER1_COMPA_vect _VECTOR(7)
#define SIG_OUTPUT_COMPARE1A _VECTOR(7)
/* Timer/Counter1 Compare Match B */
#define TIMER1_COMPB_vect _VECTOR(8)
#define SIG_OUTPUT_COMPARE1B _VECTOR(8)
/* Timer/Counter1 Overflow */
#define TIMER1_OVF_vect _VECTOR(9)
#define SIG_OVERFLOW1 _VECTOR(9)
/* Timer/Counter0 Compare Match */
#define TIMER0_COMP_vect _VECTOR(10)
#define SIG_OUTPUT_COMPARE0 _VECTOR(10)
/* Timer/Counter0 Overflow */
#define TIMER0_OVF_vect _VECTOR(11)
#define SIG_OVERFLOW0 _VECTOR(11)
/* Serial Transfer Complete */
#define SPI_STC_vect _VECTOR(12)
#define SIG_SPI _VECTOR(12)
/* USART, Rx Complete */
#define USART_RXC_vect _VECTOR(13)
#define SIG_USART_RECV _VECTOR(13)
#define SIG_UART_RECV _VECTOR(13)
/* USART Data Register Empty */
#define USART_UDRE_vect _VECTOR(14)
#define SIG_USART_DATA _VECTOR(14)
#define SIG_UART_DATA _VECTOR(14)
/* USART, Tx Complete */
#define USART_TXC_vect _VECTOR(15)
#define SIG_USART_TRANS _VECTOR(15)
#define SIG_UART_TRANS _VECTOR(15)
/* ADC Conversion Complete */
#define ADC_vect _VECTOR(16)
#define SIG_ADC _VECTOR(16)
/* EEPROM Ready */
#define EE_RDY_vect _VECTOR(17)
#define SIG_EEPROM_READY _VECTOR(17)
/* Analog Comparator */
#define ANA_COMP_vect _VECTOR(18)
#define SIG_COMPARATOR _VECTOR(18)
/* 2-wire Serial Interface */
#define TWI_vect _VECTOR(19)
#define SIG_2WIRE_SERIAL _VECTOR(19)
/* Store Program Memory Ready */
#define SPM_RDY_vect _VECTOR(20)
#define SIG_SPM_READY _VECTOR(20)
#define _VECTORS_SIZE 84
ISR(ADC_vect)
{
}
void LCDinit(void)//Initializes LCD
{
#ifdef LCD_4bit
//4 bit part
_delay_ms(50); <-- Cambia el tiempo por lo que tu necesites.
LDP=0x00;
//*****************************************************************************
//
// File Name : 'lcd_lib.h'
// Title : 8 and 4 bit LCd interface
// Author : Scienceprog.com - Copyright (C) 2007
// Created : 2007-03-29
// Revised : 2007-08-08
// Version : 1.0
// Target MCU : Atmel AVR series
//
// This code is distributed under the GNU Public License
// which can be found at [url]http://www.gnu.org/licenses/gpl.txt[/url]
//
//*****************************************************************************
#ifndef _LCDLIB_H_
#define _LCDLIB_H_
#include <inttypes.h>
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <util/delay.h>
//Uncomment this if LCD 4 bit interface is used
//******************************************
#define LCD_4bit
//***********************************************
#define LCD_RS 0 //define MCU pin connected to LCD RS
#define LCD_RW 1 //define MCU pin connected to LCD R/W
#define LCD_E 2 //define MCU pin connected to LCD E
#define LCD_D0 0 //define MCU pin connected to LCD D0
#define LCD_D1 1 //define MCU pin connected to LCD D1
#define LCD_D2 2 //define MCU pin connected to LCD D1
#define LCD_D3 3 //define MCU pin connected to LCD D2
#define LCD_D4 4 //define MCU pin connected to LCD D3
#define LCD_D5 5 //define MCU pin connected to LCD D4
#define LCD_D6 6 //define MCU pin connected to LCD D5
#define LCD_D7 7 //define MCU pin connected to LCD D6
#define LDP PORTD //define MCU port connected to LCD data pins
#define LCP PORTD //define MCU port connected to LCD control pins
#define LDDR DDRD //define MCU direction register for port connected to LCD data pins
#define LCDR DDRD //define MCU direction register for port connected to LCD control pins
#define LCD_CLR 0 //DB0: clear display
#define LCD_HOME 1 //DB1: return to home position
#define LCD_ENTRY_MODE 2 //DB2: set entry mode
#define LCD_ENTRY_INC 1 //DB1: increment
#define LCD_ENTRY_SHIFT 0 //DB2: shift
#define LCD_ON_CTRL 3 //DB3: turn lcd/cursor on
#define LCD_ON_DISPLAY 2 //DB2: turn display on
#define LCD_ON_CURSOR 1 //DB1: turn cursor on
#define LCD_ON_BLINK 0 //DB0: blinking cursor
#define LCD_MOVE 4 //DB4: move cursor/display
#define LCD_MOVE_DISP 3 //DB3: move display (0-> move cursor)
#define LCD_MOVE_RIGHT 2 //DB2: move right (0-> left)
#define LCD_FUNCTION 5 //DB5: function set
#define LCD_FUNCTION_8BIT 4 //DB4: set 8BIT mode (0->4BIT mode)
#define LCD_FUNCTION_2LINES 3 //DB3: two lines (0->one line)
#define LCD_FUNCTION_10DOTS 2 //DB2: 5x10 font (0->5x7 font)
#define LCD_CGRAM 6 //DB6: set CG RAM address
#define LCD_DDRAM 7 //DB7: set DD RAM address
// reading:
#define LCD_BUSY 7 //DB7: LCD is busy
#define LCD_LINES 2 //visible lines
#define LCD_LINE_LENGTH 16 //line length (in characters)
// cursor position to DDRAM mapping
#define LCD_LINE0_DDRAMADDR 0x00
#define LCD_LINE1_DDRAMADDR 0x40
#define LCD_LINE2_DDRAMADDR 0x14
#define LCD_LINE3_DDRAMADDR 0x54
// progress bar defines
#define PROGRESSPIXELS_PER_CHAR 6
void LCDsendChar(uint8_t); //forms data ready to send to 74HC164
void LCDsendCommand(uint8_t); //forms data ready to send to 74HC164
void LCDinit(void); //Initializes LCD
void LCDclr(void); //Clears LCD
void LCDhome(void); //LCD cursor home
void LCDstring(uint8_t*, uint8_t); //Outputs string to LCD
void LCDGotoXY(uint8_t, uint8_t); //Cursor to X Y position
void CopyStringtoLCD(const uint8_t*, uint8_t, uint8_t);//copies flash string to LCD at x,y
void LCDdefinechar(const uint8_t *,uint8_t);//write char to LCD CGRAM
void LCDshiftRight(uint8_t); //shift by n characters Right
void LCDshiftLeft(uint8_t); //shift by n characters Left
void LCDcursorOn(void); //Underline cursor ON
void LCDcursorOnBlink(void); //Underline blinking cursor ON
void LCDcursorOFF(void); //Cursor OFF
void LCDblank(void); //LCD blank but not cleared
void LCDvisible(void); //LCD visible
void LCDcursorLeft(uint8_t); //Shift cursor left by n
void LCDcursorRight(uint8_t); //shif cursor right by n
// displays a horizontal progress bar at the current cursor location
// <progress> is the value the bargraph should indicate
// <maxprogress> is the value at the end of the bargraph
// <length> is the number of LCD characters that the bargraph should cover
//adapted from AVRLIB - displays progress only for 8 bit variables
void LCDprogressBar(uint8_t progress, uint8_t maxprogress, uint8_t length);
const uint8_t LcdCustomChar[] PROGMEM=//define 8 custom LCD chars
{
0x00, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x00, // 0. 0/5 full progress block
0x00, 0x1F, 0x10, 0x10, 0x10, 0x10, 0x1F, 0x00, // 1. 1/5 full progress block
0x00, 0x1F, 0x18, 0x18, 0x18, 0x18, 0x1F, 0x00, // 2. 2/5 full progress block
0x00, 0x1F, 0x1C, 0x1C, 0x1C, 0x1C, 0x1F, 0x00, // 3. 3/5 full progress block
0x00, 0x1F, 0x1E, 0x1E, 0x1E, 0x1E, 0x1F, 0x00, // 4. 4/5 full progress block
0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00, // 5. 5/5 full progress block
0x03, 0x07, 0x0F, 0x1F, 0x0F, 0x07, 0x03, 0x00, // 6. rewind arrow
0x18, 0x1C, 0x1E, 0x1F, 0x1E, 0x1C, 0x18, 0x00 // 7. fast-forward arrow
};
void LCDsendChar(uint8_t ch) //Sends Char to LCD
{
#ifdef LCD_4bit
//4 bit part
LDP=(ch&0b11110000);
LCP|=1<<LCD_RS;
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
LCP&=~(1<<LCD_RS);
_delay_ms(1);
LDP=((ch&0b00001111)<<4);
LCP|=1<<LCD_RS;
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
LCP&=~(1<<LCD_RS);
_delay_ms(1);
#else
//8 bit part
LDP=ch;
LCP|=1<<LCD_RS;
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
LCP&=~(1<<LCD_RS);
_delay_ms(1);
#endif
}
void LCDsendCommand(uint8_t cmd) //Sends Command to LCD
{
#ifdef LCD_4bit
//4 bit part
LDP=(cmd&0b11110000);
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
LDP=((cmd&0b00001111)<<4);
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
#else
//8 bit part
LDP=cmd;
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
#endif
}
void LCDinit(void)//Initializes LCD
{
#ifdef LCD_4bit
//4 bit part
_delay_ms(50);
LDP=0x00;
LCP=0x00;
LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //Registro de datos
LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS; //Registro de control
//---------one------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(5);
//-----------two-----------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-------three-------------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-------four-------------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|0<<LCD_D4; //4 bit mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//--------4 bit--dual line---------------
LCDsendCommand(0b00101000);
//-----increment address, invisible cursor shift------
LCDsendCommand(0b00001100);
//init 8 custom chars
uint8_t ch=0, chn=0;
while(ch<64)
{
LCDdefinechar((LcdCustomChar+ch),chn++);
ch=ch+8;
}
#else
//8 bit part
_delay_ms(15);
LDP=0x00;
LCP=0x00;
LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<LCD_D3
|1<<LCD_D2|1<<LCD_D1|1<<LCD_D0;
LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS;
//---------one------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|0<<LCD_D3
|0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-----------two-----------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|0<<LCD_D3
|0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-------three-------------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|0<<LCD_D3
|0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//--------8 bit dual line----------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<LCD_D3
|0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-----increment address, invisible cursor shift------
LDP=0<<LCD_D7|0<<LCD_D6|0<<LCD_D5|0<<LCD_D4|1<<LCD_D3
|1<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(5);
//init custom chars
uint8_t ch=0, chn=0;
while(ch<64)
{
LCDdefinechar((LcdCustomChar+ch),chn++);
ch=ch+8;
}
#endif
}
void LCDclr(void) //Clears LCD
{
LCDsendCommand(1<<LCD_CLR);
}
void LCDhome(void) //LCD cursor home
{
LCDsendCommand(1<<LCD_HOME);
}
void LCDstring(uint8_t* data, uint8_t nBytes) //Outputs string to LCD
{
register uint8_t i;
// check to make sure we have a good pointer
if (!data) return;
// print data
for(i=0; i<nBytes; i++)
{
LCDsendChar(data[i]);
}
LCDcursorOFF();
}
void LCDGotoXY(uint8_t x, uint8_t y) //Cursor to X Y position
{
register uint8_t DDRAMAddr;
// remap lines into proper order
switch(y)
{
case 0: DDRAMAddr = LCD_LINE0_DDRAMADDR+x; break;
case 1: DDRAMAddr = LCD_LINE1_DDRAMADDR+x; break;
case 2: DDRAMAddr = LCD_LINE2_DDRAMADDR+x; break;
case 3: DDRAMAddr = LCD_LINE3_DDRAMADDR+x; break;
default: DDRAMAddr = LCD_LINE0_DDRAMADDR+x;
}
// set data address
LCDsendCommand(1<<LCD_DDRAM | DDRAMAddr);
}
//Copies string from flash memory to LCD at x y position
//const uint8_t welcomeln1[] PROGMEM="AVR LCD DEMO\0";
//CopyStringtoLCD(welcomeln1, 3, 1);
void CopyStringtoLCD(const uint8_t *FlashLoc, uint8_t x, uint8_t y)
{
uint8_t i;
LCDGotoXY(x,y);
for(i=0;(uint8_t)pgm_read_byte(&FlashLoc[i]);i++)
{
LCDsendChar((uint8_t)pgm_read_byte(&FlashLoc[i]));
}
}
//defines char symbol in CGRAM
/*
const uint8_t backslash[] PROGMEM=
{
0b00000000,//back slash
0b00010000,
0b00001000,
0b00000100,
0b00000010,
0b00000001,
0b00000000,
0b00000000
};
LCDdefinechar(backslash,0);
*/
void LCDdefinechar(const uint8_t *pc,uint8_t char_code){
uint8_t a, pcc;
uint16_t i;
a=(char_code<<3)|0x40;
for (i=0; i<8; i++){
pcc=pgm_read_byte(&pc[i]);
LCDsendCommand(a++);
LCDsendChar(pcc);
}
}
void LCDshiftLeft(uint8_t n) //Scrol n of characters Right
{
uint8_t i;
for (i=0;i<n;i++)
{
LCDsendCommand(0x1E);
}
}
void LCDshiftRight(uint8_t n) //Scrol n of characters Left
{
uint8_t i;
for (i=0;i<n;i++)
{
LCDsendCommand(0x18);
}
}
void LCDcursorOn(void) //displays LCD cursor
{
LCDsendCommand(0x0E);
}
void LCDcursorOnBlink(void) //displays LCD blinking cursor
{
LCDsendCommand(0x0F);
}
void LCDcursorOFF(void) //turns OFF cursor
{
LCDsendCommand(0x0C);
}
void LCDblank(void) //blanks LCD
{
LCDsendCommand(0x08);
}
void LCDvisible(void) //Shows LCD
{
LCDsendCommand(0x0C);
}
void LCDcursorLeft(uint8_t n) //Moves cursor by n poisitions left
{
uint8_t i;
for (i=0;i<n;i++)
{
LCDsendCommand(0x10);
}
}
void LCDcursorRight(uint8_t n) //Moves cursor by n poisitions left
{
uint8_t i;
for (i=0;i<n;i++)
{
LCDsendCommand(0x14);
}
}
//adapted fro mAVRLIB
void LCDprogressBar(uint8_t progress, uint8_t maxprogress, uint8_t length)
{
uint8_t i;
uint16_t pixelprogress;
uint8_t c;
// draw a progress bar displaying (progress / maxprogress)
// starting from the current cursor position
// with a total length of "length" characters
// ***note, LCD chars 0-5 must be programmed as the bar characters
// char 0 = empty ... char 5 = full
// total pixel length of bargraph equals length*PROGRESSPIXELS_PER_CHAR;
// pixel length of bar itself is
pixelprogress = ((progress*(length*PROGRESSPIXELS_PER_CHAR))/maxprogress);
// print exactly "length" characters
for(i=0; i<length; i++)
{
// check if this is a full block, or partial or empty
// (u16) cast is needed to avoid sign comparison warning
if( ((i*(uint16_t)PROGRESSPIXELS_PER_CHAR)+5) > pixelprogress )
{
// this is a partial or empty block
if( ((i*(uint16_t)PROGRESSPIXELS_PER_CHAR)) > pixelprogress )
{
// this is an empty block
// use space character?
c = 0;
}
else
{
// this is a partial block
c = pixelprogress % PROGRESSPIXELS_PER_CHAR;
}
}
else
{
// this is a full block
c = 5;
}
// write character to display
LCDsendChar(c);
}
}
#endif
#ifdef LCD_4bit
//4 bit part
_delay_ms(50);
LDP=0x00;
LCP=0x00;
LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //Registro de datos
LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS; //Registro de control
#else
//8 bit part
_delay_ms(15);
LDP=0x00;
LCP=0x00;
LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<LCD_D3
|1<<LCD_D2|1<<LCD_D1|1<<LCD_D0;
LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS;
#define LCD_RS 0 //define MCU pin connected to LCD RS
#define LCD_RW 1 //define MCU pin connected to LCD R/W
#define LCD_E 2 //define MCU pin connected to LCD E
#define LCD_D0 0 //define MCU pin connected to LCD D0
#define LCD_D1 1 //define MCU pin connected to LCD D1
#define LCD_D2 2 //define MCU pin connected to LCD D1
#define LCD_D3 3 //define MCU pin connected to LCD D2
#define LCD_D4 4 //define MCU pin connected to LCD D3
#define LCD_D5 5 //define MCU pin connected to LCD D4
#define LCD_D6 6 //define MCU pin connected to LCD D5
#define LCD_D7 7 //define MCU pin connected to LCD D6
#define LDP PORTD //define MCU port connected to LCD data pins
#define LCP PORTD //define MCU port connected to LCD control pins
#define LDDR DDRD //define MCU direction register for port connected to LCD data pins
#define LCDR DDRD //define MCU direction register for port connected to LCD control pins
datos enviados:
LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<LCD_D3
|1<<LCD_D2|1<<LCD_D1|1<<LCD_D0;
control aplicado a los datos:
LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS;
#pragma AVRPART ADMIN PART_NAME ATmega32
#pragma AVRPART MEMORY PROG_FLASH 32768
#pragma AVRPART MEMORY EEPROM 1024
#pragma AVRPART MEMORY INT_SRAM SIZE 2048
#pragma AVRPART MEMORY INT_SRAM START_ADDR 0x60
.include "m32def.inc"
.CSEG
rjmp RESET
RESET:
ldi r16,HIGH(RAMEND) ;Configura la pila
out SPH,r16 ;para utilizar subrutinas
ldi r16,LOW(RAMEND)
out SPL,r16
call UNSEG
call INI_LCD
NOMBRE:
ldi r16,0x41
call caracterLCD
ldi r16,0x44
call caracterLCD
ldi r16,0x4F
call caracterLCD
ldi r16,0x4C
call caracterLCD
ldi r16,0x46
call caracterLCD
ldi r16,0x4F
call caracterLCD
ldi r16,0x02
call comandoLCD
call UNSEG
rjmp NOMBRE
/*************************************************************************
* Subrutina
* Nombre : INI_LCD
*
* Proposito : Inicializa el LCD por instrucción.
* PORTD = DATOS; PORTC,0 = RS; PORTC,1 = E.
* Basado en la pagina 46 de la hoja de datos del HD44780U.PDF
*************************************************************************/
INI_LCD:
ser r16
out DDRD,r16 ;Configura puerto de datos como salida
ldi r16,0b00000011
out DDRC,r16 ;Configura puerto de control como salida
nop ;Actualiza registros
cbi PORTC,0 ;0->RS
cbi PORTC,1 ;0->E
call TREINTAMS
ldi r16,0x38 ;Inicializa LCD
call comandoLCD
call CINCOMS
ldi r16,0x38 ;Inicializa LCD
call comandoLCD
call UNMS
ldi r16,0x38 ;Function Set
call comandoLCD
call UNMS
ldi r16,0x0C ;Display on
call comandoLCD
call UNMS
ldi r16,0x01 ;Display clear
call comandoLCD
call UNMS
ldi r16,0x06 ;Entry Mode Set
call comandoLCD
call UNMS
ldi r16,0x02 ;Return Home
call comandoLCD
call UNMS
call UNMS
ret
/*************************************************************************
* Subrutina
* Nombre : comandoLCD
*
* Proposito : Envía un dato al bus de datos del LCD para ser procesado
* como un comando que modifica el comportamiento del LCD
*************************************************************************/
comandoLCD:
cbi PORTC,0 ;0->RS
cbi PORTC,1 ;0->E
out PORTD,r16 ;Envía el dato al bus de datos
call habilitaLCD
ret
/*************************************************************************
* Subrutina
*Nombre : caracterLCD
*
*Proposito : Envía un dato al bus de datos del LCD para ser procesado
* como un caracter alfanumérico a visualizarse en el LCD
*************************************************************************/
caracterLCD:
sbi PORTC,0 ;1->RS
cbi PORTC,1 ;0->E
out PORTD,r16 ;Envía el dato al bus de datos
call habilitaLCD
ret
/*************************************************************************
* Subrutina
* Nombre : habilitaLCD
*
* Proposito : Activa el LCD para procesar las instrucciones ya sean estas
* Instrucciones de comando ó Instrucciones de datos
*************************************************************************/
habilitaLCD:
sbi PORTC,1 ;1->E
ldi r16,0xFF
HLCD:
dec r16
brne HLCD
cbi PORTC,1 ;0->E
ret
/*************************************************************************
*Subrutina
*Nombre : UNSEG
*
* Propósito : Genera un temporizado de un segundo. realmente 1002897
*************************************************************************/
UNSEG:
ldi r16,14
UNSEG2:
ldi r17,95
UNSEG1:
ldi r18,250
UNSEG0:
dec r18
brne UNSEG0
dec r17
brne UNSEG1
dec r16
brne UNSEG2
ret
/*************************************************************************
* Subrutina
* Nombre : TREINTAMS
*
* Propósito : Genera un temporizado de 30 milisegundos. realmente 30.172ms
*************************************************************************/
TREINTAMS:
ldi r16,15
TREINTAMS2:
ldi r17,59
TREINTAMS1:
ldi r18,10
TREINTAMS0:
dec r18
brne TREINTAMS0
dec r17
brne TREINTAMS1
dec r16
brne TREINTAMS2
ret
/*************************************************************************
* Subrutina
* Nombre : CINCOMS
*
* Propósito : Genera un temporizado de 5 milisegundos. realmente 5.011ms
*************************************************************************/
CINCOMS:
ldi r16,9
CINCOMS2:
ldi r17,29
CINCOMS1:
ldi r18,5
CINCOMS0:
dec r18
brne CINCOMS0
dec r17
brne CINCOMS1
dec r16
brne CINCOMS2
ret
/*************************************************************************
* Subrutina
* Nombre : UNMS
*
* Propósito : Genera un temporizado de 1 milisegundo. realmente 1ms
*************************************************************************/
UNMS:
ldi r16,4
UNMS2:
ldi r17,11
UNMS1:
ldi r18,6
UNMS0:
dec r18
brne UNMS0
dec r17
brne UNMS1
dec r16
brne UNMS2
nop
nop
nop
nop
nop
ret
//*****************************************************************************
//
// File Name : 'lcd_lib.h'
// Title : 8 and 4 bit LCd interface
// Author : Scienceprog.com - Copyright (C) 2007
// Created : 2007-03-29
// Revised : 2007-08-08
// Version : 1.0
// Target MCU : Atmel AVR series
//
// This code is distributed under the GNU Public License
// which can be found at [url]http://www.gnu.org/licenses/gpl.txt[/url]
//
//*****************************************************************************
#ifndef _LCDLIB_H_
#define _LCDLIB_H_
#include <inttypes.h>
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <util/delay.h>
//Uncomment this if LCD 4 bit interface is used
//******************************************
#define LCD_4bit
//***********************************************
#define LCD_RS 0 //define MCU pin connected to LCD RS
#define LCD_RW 1 //define MCU pin connected to LCD R/W
#define LCD_E 2 //define MCU pin connected to LCD E
#define LCD_D0 0 //define MCU pin connected to LCD D0
#define LCD_D1 1 //define MCU pin connected to LCD D1
#define LCD_D2 2 //define MCU pin connected to LCD D1
#define LCD_D3 3 //define MCU pin connected to LCD D2
#define LCD_D4 4 //define MCU pin connected to LCD D3
#define LCD_D5 5 //define MCU pin connected to LCD D4
#define LCD_D6 6 //define MCU pin connected to LCD D5
#define LCD_D7 7 //define MCU pin connected to LCD D6
#define LDP PORTD //define MCU port connected to LCD data pins
#define LCP PORTD //define MCU port connected to LCD control pins
#define LDDR DDRD //define MCU direction register for port connected to LCD data pins
#define LCDR DDRD //define MCU direction register for port connected to LCD control pins
#define LCD_CLR 0 //DB0: clear display
#define LCD_HOME 1 //DB1: return to home position
#define LCD_ENTRY_MODE 2 //DB2: set entry mode
#define LCD_ENTRY_INC 1 //DB1: increment
#define LCD_ENTRY_SHIFT 0 //DB2: shift
#define LCD_ON_CTRL 3 //DB3: turn lcd/cursor on
#define LCD_ON_DISPLAY 2 //DB2: turn display on
#define LCD_ON_CURSOR 1 //DB1: turn cursor on
#define LCD_ON_BLINK 0 //DB0: blinking cursor
#define LCD_MOVE 4 //DB4: move cursor/display
#define LCD_MOVE_DISP 3 //DB3: move display (0-> move cursor)
#define LCD_MOVE_RIGHT 2 //DB2: move right (0-> left)
#define LCD_FUNCTION 5 //DB5: function set
#define LCD_FUNCTION_8BIT 4 //DB4: set 8BIT mode (0->4BIT mode)
#define LCD_FUNCTION_2LINES 3 //DB3: two lines (0->one line)
#define LCD_FUNCTION_10DOTS 2 //DB2: 5x10 font (0->5x7 font)
#define LCD_CGRAM 6 //DB6: set CG RAM address
#define LCD_DDRAM 7 //DB7: set DD RAM address
// reading:
#define LCD_BUSY 7 //DB7: LCD is busy
#define LCD_LINES 2 //visible lines
#define LCD_LINE_LENGTH 16 //line length (in characters)
// cursor position to DDRAM mapping
#define LCD_LINE0_DDRAMADDR 0x00
#define LCD_LINE1_DDRAMADDR 0x40
#define LCD_LINE2_DDRAMADDR 0x14
#define LCD_LINE3_DDRAMADDR 0x54
// progress bar defines
#define PROGRESSPIXELS_PER_CHAR 6
void LCDsendChar(uint8_t); //forms data ready to send to 74HC164
void LCDsendCommand(uint8_t); //forms data ready to send to 74HC164
void LCDinit(void); //Initializes LCD
void LCDclr(void); //Clears LCD
void LCDhome(void); //LCD cursor home
void LCDstring(uint8_t*, uint8_t); //Outputs string to LCD
void LCDGotoXY(uint8_t, uint8_t); //Cursor to X Y position
void CopyStringtoLCD(const uint8_t*, uint8_t, uint8_t);//copies flash string to LCD at x,y
void LCDdefinechar(const uint8_t *,uint8_t);//write char to LCD CGRAM
void LCDshiftRight(uint8_t); //shift by n characters Right
void LCDshiftLeft(uint8_t); //shift by n characters Left
void LCDcursorOn(void); //Underline cursor ON
void LCDcursorOnBlink(void); //Underline blinking cursor ON
void LCDcursorOFF(void); //Cursor OFF
void LCDblank(void); //LCD blank but not cleared
void LCDvisible(void); //LCD visible
void LCDcursorLeft(uint8_t); //Shift cursor left by n
void LCDcursorRight(uint8_t); //shif cursor right by n
// displays a horizontal progress bar at the current cursor location
// <progress> is the value the bargraph should indicate
// <maxprogress> is the value at the end of the bargraph
// <length> is the number of LCD characters that the bargraph should cover
//adapted from AVRLIB - displays progress only for 8 bit variables
void LCDprogressBar(uint8_t progress, uint8_t maxprogress, uint8_t length);
const uint8_t LcdCustomChar[] PROGMEM=//define 8 custom LCD chars
{
0x00, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x00, // 0. 0/5 full progress block
0x00, 0x1F, 0x10, 0x10, 0x10, 0x10, 0x1F, 0x00, // 1. 1/5 full progress block
0x00, 0x1F, 0x18, 0x18, 0x18, 0x18, 0x1F, 0x00, // 2. 2/5 full progress block
0x00, 0x1F, 0x1C, 0x1C, 0x1C, 0x1C, 0x1F, 0x00, // 3. 3/5 full progress block
0x00, 0x1F, 0x1E, 0x1E, 0x1E, 0x1E, 0x1F, 0x00, // 4. 4/5 full progress block
0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00, // 5. 5/5 full progress block
0x03, 0x07, 0x0F, 0x1F, 0x0F, 0x07, 0x03, 0x00, // 6. rewind arrow
0x18, 0x1C, 0x1E, 0x1F, 0x1E, 0x1C, 0x18, 0x00 // 7. fast-forward arrow
};
void LCDsendChar(uint8_t ch) //Sends Char to LCD
{
#ifdef LCD_4bit
//4 bit part
LDP=(ch&0b11110000);
LCP|=1<<LCD_RS;
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
LCP&=~(1<<LCD_RS);
_delay_ms(1);
LDP=((ch&0b00001111)<<4);
LCP|=1<<LCD_RS;
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
LCP&=~(1<<LCD_RS);
_delay_ms(1);
#else
//8 bit part
LDP=ch;
LCP|=1<<LCD_RS;
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
LCP&=~(1<<LCD_RS);
_delay_ms(1);
#endif
}
void LCDsendCommand(uint8_t cmd) //Sends Command to LCD
{
#ifdef LCD_4bit
//4 bit part
LDP=(cmd&0b11110000);
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
LDP=((cmd&0b00001111)<<4);
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
#else
//8 bit part
LDP=cmd;
LCP|=1<<LCD_E;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
#endif
}
void LCDinit(void)//Initializes LCD
{
#ifdef LCD_4bit
//4 bit part
_delay_ms(50);
LDP=0x00;
LCP=0x00;
LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //Registro de datos
LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS; //Registro de control
//---------one------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(5);
//-----------two-----------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-------three-------------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-------four-------------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|0<<LCD_D4; //4 bit mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//--------4 bit--dual line---------------
LCDsendCommand(0b00101000);
//-----increment address, invisible cursor shift------
LCDsendCommand(0b00001100);
//init 8 custom chars
uint8_t ch=0, chn=0;
while(ch<64)
{
LCDdefinechar((LcdCustomChar+ch),chn++);
ch=ch+8;
}
#else
//8 bit part
_delay_ms(15);
LDP=0x00;
LCP=0x00;
LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<LCD_D3
|1<<LCD_D2|1<<LCD_D1|1<<LCD_D0;
LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS;
//---------one------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|0<<LCD_D3
|0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-----------two-----------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|0<<LCD_D3
|0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-------three-------------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|0<<LCD_D3
|0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//--------8 bit dual line----------
LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<LCD_D3
|0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(1);
//-----increment address, invisible cursor shift------
LDP=0<<LCD_D7|0<<LCD_D6|0<<LCD_D5|0<<LCD_D4|1<<LCD_D3
|1<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode
LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;
_delay_ms(1);
LCP&=~(1<<LCD_E);
_delay_ms(5);
//init custom chars
uint8_t ch=0, chn=0;
while(ch<64)
{
LCDdefinechar((LcdCustomChar+ch),chn++);
ch=ch+8;
}
#endif
}
void LCDclr(void) //Clears LCD
{
LCDsendCommand(1<<LCD_CLR);
}
void LCDhome(void) //LCD cursor home
{
LCDsendCommand(1<<LCD_HOME);
}
void LCDstring(uint8_t* data, uint8_t nBytes) //Outputs string to LCD
{
register uint8_t i;
// check to make sure we have a good pointer
if (!data) return;
// print data
for(i=0; i<nBytes; i++)
{
LCDsendChar(data[i]);
}
LCDcursorOFF();
}
void LCDGotoXY(uint8_t x, uint8_t y) //Cursor to X Y position
{
register uint8_t DDRAMAddr;
// remap lines into proper order
switch(y)
{
case 0: DDRAMAddr = LCD_LINE0_DDRAMADDR+x; break;
case 1: DDRAMAddr = LCD_LINE1_DDRAMADDR+x; break;
case 2: DDRAMAddr = LCD_LINE2_DDRAMADDR+x; break;
case 3: DDRAMAddr = LCD_LINE3_DDRAMADDR+x; break;
default: DDRAMAddr = LCD_LINE0_DDRAMADDR+x;
}
// set data address
LCDsendCommand(1<<LCD_DDRAM | DDRAMAddr);
}
//Copies string from flash memory to LCD at x y position
//const uint8_t welcomeln1[] PROGMEM="AVR LCD DEMO\0";
//CopyStringtoLCD(welcomeln1, 3, 1);
void CopyStringtoLCD(const uint8_t *FlashLoc, uint8_t x, uint8_t y)
{
uint8_t i;
LCDGotoXY(x,y);
for(i=0;(uint8_t)pgm_read_byte(&FlashLoc[i]);i++)
{
LCDsendChar((uint8_t)pgm_read_byte(&FlashLoc[i]));
}
}
//defines char symbol in CGRAM
/*
const uint8_t backslash[] PROGMEM=
{
0b00000000,//back slash
0b00010000,
0b00001000,
0b00000100,
0b00000010,
0b00000001,
0b00000000,
0b00000000
};
LCDdefinechar(backslash,0);
*/
void LCDdefinechar(const uint8_t *pc,uint8_t char_code){
uint8_t a, pcc;
uint16_t i;
a=(char_code<<3)|0x40;
for (i=0; i<8; i++){
pcc=pgm_read_byte(&pc[i]);
LCDsendCommand(a++);
LCDsendChar(pcc);
}
}
void LCDshiftLeft(uint8_t n) //Scrol n of characters Right
{
uint8_t i;
for (i=0;i<n;i++)
{
LCDsendCommand(0x1E);
}
}
void LCDshiftRight(uint8_t n) //Scrol n of characters Left
{
uint8_t i;
for (i=0;i<n;i++)
{
LCDsendCommand(0x18);
}
}
void LCDcursorOn(void) //displays LCD cursor
{
LCDsendCommand(0x0E);
}
void LCDcursorOnBlink(void) //displays LCD blinking cursor
{
LCDsendCommand(0x0F);
}
void LCDcursorOFF(void) //turns OFF cursor
{
LCDsendCommand(0x0C);
}
void LCDblank(void) //blanks LCD
{
LCDsendCommand(0x08);
}
void LCDvisible(void) //Shows LCD
{
LCDsendCommand(0x0C);
}
void LCDcursorLeft(uint8_t n) //Moves cursor by n poisitions left
{
uint8_t i;
for (i=0;i<n;i++)
{
LCDsendCommand(0x10);
}
}
void LCDcursorRight(uint8_t n) //Moves cursor by n poisitions left
{
uint8_t i;
for (i=0;i<n;i++)
{
LCDsendCommand(0x14);
}
}
//adapted fro mAVRLIB
void LCDprogressBar(uint8_t progress, uint8_t maxprogress, uint8_t length)
{
uint8_t i;
uint16_t pixelprogress;
uint8_t c;
// draw a progress bar displaying (progress / maxprogress)
// starting from the current cursor position
// with a total length of "length" characters
// ***note, LCD chars 0-5 must be programmed as the bar characters
// char 0 = empty ... char 5 = full
// total pixel length of bargraph equals length*PROGRESSPIXELS_PER_CHAR;
// pixel length of bar itself is
pixelprogress = ((progress*(length*PROGRESSPIXELS_PER_CHAR))/maxprogress);
// print exactly "length" characters
for(i=0; i<length; i++)
{
// check if this is a full block, or partial or empty
// (u16) cast is needed to avoid sign comparison warning
if( ((i*(uint16_t)PROGRESSPIXELS_PER_CHAR)+5) > pixelprogress )
{
// this is a partial or empty block
if( ((i*(uint16_t)PROGRESSPIXELS_PER_CHAR)) > pixelprogress )
{
// this is an empty block
// use space character?
c = 0;
}
else
{
// this is a partial block
c = pixelprogress % PROGRESSPIXELS_PER_CHAR;
}
}
else
{
// this is a full block
c = 5;
}
// write character to display
LCDsendChar(c);
}
}
#endif