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- #include "LiquidCrystal.h"
-
- #include <stdio.h>
- #include <string.h>
- #include <inttypes.h>
- #include "WProgram.h"
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- LiquidCrystal::LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable,
- uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3,
- uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7)
- {
- init(0, rs, rw, enable, d0, d1, d2, d3, d4, d5, d6, d7);
- }
-
- LiquidCrystal::LiquidCrystal(uint8_t rs, uint8_t enable,
- uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3,
- uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7)
- {
- init(0, rs, 255, enable, d0, d1, d2, d3, d4, d5, d6, d7);
- }
-
- LiquidCrystal::LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable,
- uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3)
- {
- init(1, rs, rw, enable, d0, d1, d2, d3, 0, 0, 0, 0);
- }
-
- LiquidCrystal::LiquidCrystal(uint8_t rs, uint8_t enable,
- uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3)
- {
- init(1, rs, 255, enable, d0, d1, d2, d3, 0, 0, 0, 0);
- }
-
- void LiquidCrystal::init(uint8_t fourbitmode, uint8_t rs, uint8_t rw, uint8_t enable,
- uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3,
- uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7)
- {
- _rs_pin = rs;
- _rw_pin = rw;
- _enable_pin = enable;
-
- _data_pins[0] = d0;
- _data_pins[1] = d1;
- _data_pins[2] = d2;
- _data_pins[3] = d3;
- _data_pins[4] = d4;
- _data_pins[5] = d5;
- _data_pins[6] = d6;
- _data_pins[7] = d7;
-
- pinMode(_rs_pin, OUTPUT);
-
- if (_rw_pin != 255) {
- pinMode(_rw_pin, OUTPUT);
- }
- pinMode(_enable_pin, OUTPUT);
-
- if (fourbitmode)
- _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
- else
- _displayfunction = LCD_8BITMODE | LCD_1LINE | LCD_5x8DOTS;
-
- begin(16, 1);
- }
-
- void LiquidCrystal::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
- if (lines > 1) {
- _displayfunction |= LCD_2LINE;
- }
- _numlines = lines;
- _currline = 0;
-
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- if ((dotsize != 0) && (lines == 1)) {
- _displayfunction |= LCD_5x10DOTS;
- }
-
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-
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- delayMicroseconds(50000);
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- digitalWrite(_rs_pin, LOW);
- digitalWrite(_enable_pin, LOW);
- if (_rw_pin != 255) {
- digitalWrite(_rw_pin, LOW);
- }
-
-
- if (! (_displayfunction & LCD_8BITMODE)) {
-
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-
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- write4bits(0x03);
- delayMicroseconds(4500);
-
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- write4bits(0x03);
- delayMicroseconds(4500);
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- write4bits(0x03);
- delayMicroseconds(150);
-
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- write4bits(0x02);
- } else {
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- command(LCD_FUNCTIONSET | _displayfunction);
- delayMicroseconds(4500);
-
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- command(LCD_FUNCTIONSET | _displayfunction);
- delayMicroseconds(150);
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- command(LCD_FUNCTIONSET | _displayfunction);
- }
-
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- command(LCD_FUNCTIONSET | _displayfunction);
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- _displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF;
- display();
-
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- clear();
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- _displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
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- command(LCD_ENTRYMODESET | _displaymode);
-
- }
-
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- void LiquidCrystal::clear()
- {
- command(LCD_CLEARDISPLAY);
- delayMicroseconds(2000);
- }
-
- void LiquidCrystal::home()
- {
- command(LCD_RETURNHOME);
- delayMicroseconds(2000);
- }
-
- void LiquidCrystal::setCursor(uint8_t col, uint8_t row)
- {
- int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
- if ( row > _numlines ) {
- row = _numlines-1;
- }
-
- command(LCD_SETDDRAMADDR | (col + row_offsets[row]));
- }
-
-
- void LiquidCrystal::noDisplay() {
- _displaycontrol &= ~LCD_DISPLAYON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
- }
- void LiquidCrystal::display() {
- _displaycontrol |= LCD_DISPLAYON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
- }
-
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- void LiquidCrystal::noCursor() {
- _displaycontrol &= ~LCD_CURSORON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
- }
- void LiquidCrystal::cursor() {
- _displaycontrol |= LCD_CURSORON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
- }
-
-
- void LiquidCrystal::noBlink() {
- _displaycontrol &= ~LCD_BLINKON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
- }
- void LiquidCrystal::blink() {
- _displaycontrol |= LCD_BLINKON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
- }
-
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- void LiquidCrystal::scrollDisplayLeft(void) {
- command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
- }
- void LiquidCrystal::scrollDisplayRight(void) {
- command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT);
- }
-
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- void LiquidCrystal::leftToRight(void) {
- _displaymode |= LCD_ENTRYLEFT;
- command(LCD_ENTRYMODESET | _displaymode);
- }
-
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- void LiquidCrystal::rightToLeft(void) {
- _displaymode &= ~LCD_ENTRYLEFT;
- command(LCD_ENTRYMODESET | _displaymode);
- }
-
-
- void LiquidCrystal::autoscroll(void) {
- _displaymode |= LCD_ENTRYSHIFTINCREMENT;
- command(LCD_ENTRYMODESET | _displaymode);
- }
-
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- void LiquidCrystal::noAutoscroll(void) {
- _displaymode &= ~LCD_ENTRYSHIFTINCREMENT;
- command(LCD_ENTRYMODESET | _displaymode);
- }
-
-
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- void LiquidCrystal::createChar(uint8_t location, uint8_t charmap[]) {
- location &= 0x7;
- command(LCD_SETCGRAMADDR | (location << 3));
- for (int i=0; i<8; i++) {
- write(charmap[i]);
- }
- }
-
-
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- inline void LiquidCrystal::command(uint8_t value) {
- send(value, LOW);
- }
-
- inline void LiquidCrystal::write(uint8_t value) {
- send(value, HIGH);
- }
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- void LiquidCrystal::send(uint8_t value, uint8_t mode) {
- digitalWrite(_rs_pin, mode);
-
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- if (_rw_pin != 255) {
- digitalWrite(_rw_pin, LOW);
- }
-
- if (_displayfunction & LCD_8BITMODE) {
- write8bits(value);
- } else {
- write4bits(value>>4);
- write4bits(value);
- }
- }
-
- void LiquidCrystal::pulseEnable(void) {
- digitalWrite(_enable_pin, LOW);
- delayMicroseconds(1);
- digitalWrite(_enable_pin, HIGH);
- delayMicroseconds(1);
- digitalWrite(_enable_pin, LOW);
- delayMicroseconds(100);
- }
-
- void LiquidCrystal::write4bits(uint8_t value) {
- for (int i = 0; i < 4; i++) {
- pinMode(_data_pins[i], OUTPUT);
- digitalWrite(_data_pins[i], (value >> i) & 0x01);
- }
-
- pulseEnable();
- }
-
- void LiquidCrystal::write8bits(uint8_t value) {
- for (int i = 0; i < 8; i++) {
- pinMode(_data_pins[i], OUTPUT);
- digitalWrite(_data_pins[i], (value >> i) & 0x01);
- }
-
- pulseEnable();
- }
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