Merge pull request #159 from ddrown/source_master
Remove libraries/LiquidCrystal_I2C as the normal (AVR) Arduino version works fine (and the version that was in the repo was non-standard and didn't work for most people.
This commit is contained in:
commit
268d9208b8
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// LiquidCrystal_I2C V2.0
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#include "LiquidCrystal_I2C.h"
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#include <inttypes.h>
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#include "Wire.h"
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#include "Arduino.h"
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// When the display powers up, it is configured as follows:
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//
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// 1. Display clear
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// 2. Function set:
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// DL = 1; 8-bit interface data
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// N = 0; 1-line display
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// F = 0; 5x8 dot character font
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// 3. Display on/off control:
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// D = 0; Display off
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// C = 0; Cursor off
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// B = 0; Blinking off
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// 4. Entry mode set:
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// I/D = 1; Increment by 1
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// S = 0; No shift
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//
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// Note, however, that resetting the Arduino doesn't reset the LCD, so we
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// can't assume that its in that state when a sketch starts (and the
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// LiquidCrystal constructor is called).
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LiquidCrystal_I2C::LiquidCrystal_I2C(uint8_t lcd_Addr,uint8_t lcd_cols,uint8_t lcd_rows)
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{
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_Addr = lcd_Addr;
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_cols = lcd_cols;
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_rows = lcd_rows;
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_backlightval = LCD_NOBACKLIGHT;
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}
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void LiquidCrystal_I2C::init(){
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init_priv();
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}
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void LiquidCrystal_I2C::init_priv()
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{
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Wire.begin();
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_displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
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begin(_cols, _rows);
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}
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void LiquidCrystal_I2C::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
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if (lines > 1) {
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_displayfunction |= LCD_2LINE;
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}
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_numlines = lines;
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// for some 1 line displays you can select a 10 pixel high font
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if ((dotsize != 0) && (lines == 1)) {
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_displayfunction |= LCD_5x10DOTS;
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}
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// SEE PAGE 45/46 FOR INITIALIZATION SPECIFICATION!
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// according to datasheet, we need at least 40ms after power rises above 2.7V
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// before sending commands. Arduino can turn on way befer 4.5V so we'll wait 50
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delayMicroseconds(50000);
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// Now we pull both RS and R/W low to begin commands
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expanderWrite(_backlightval); // reset expanderand turn backlight off (Bit 8 =1)
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delay(1000);
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//put the LCD into 4 bit mode
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// this is according to the hitachi HD44780 datasheet
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// figure 24, pg 46
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// we start in 8bit mode, try to set 4 bit mode
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write4bits(0x03);
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delayMicroseconds(4500); // wait min 4.1ms
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// second try
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write4bits(0x03);
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delayMicroseconds(4500); // wait min 4.1ms
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// third go!
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write4bits(0x03);
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delayMicroseconds(150);
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// finally, set to 4-bit interface
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write4bits(0x02);
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// set # lines, font size, etc.
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command(LCD_FUNCTIONSET | _displayfunction);
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// turn the display on with no cursor or blinking default
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_displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF;
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display();
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// clear it off
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clear();
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// Initialize to default text direction (for roman languages)
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_displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
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// set the entry mode
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command(LCD_ENTRYMODESET | _displaymode);
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home();
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}
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/********** high level commands, for the user! */
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void LiquidCrystal_I2C::clear(){
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command(LCD_CLEARDISPLAY);// clear display, set cursor position to zero
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delayMicroseconds(2000); // this command takes a long time!
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}
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void LiquidCrystal_I2C::home(){
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command(LCD_RETURNHOME); // set cursor position to zero
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delayMicroseconds(2000); // this command takes a long time!
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}
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void LiquidCrystal_I2C::setCursor(uint8_t col, uint8_t row){
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int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
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if ( row > _numlines ) {
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row = _numlines-1; // we count rows starting w/0
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}
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command(LCD_SETDDRAMADDR | (col + row_offsets[row]));
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}
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// Turn the display on/off (quickly)
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void LiquidCrystal_I2C::noDisplay() {
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_displaycontrol &= ~LCD_DISPLAYON;
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command(LCD_DISPLAYCONTROL | _displaycontrol);
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}
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void LiquidCrystal_I2C::display() {
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_displaycontrol |= LCD_DISPLAYON;
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command(LCD_DISPLAYCONTROL | _displaycontrol);
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}
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// Turns the underline cursor on/off
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void LiquidCrystal_I2C::noCursor() {
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_displaycontrol &= ~LCD_CURSORON;
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command(LCD_DISPLAYCONTROL | _displaycontrol);
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}
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void LiquidCrystal_I2C::cursor() {
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_displaycontrol |= LCD_CURSORON;
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command(LCD_DISPLAYCONTROL | _displaycontrol);
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}
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// Turn on and off the blinking cursor
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void LiquidCrystal_I2C::noBlink() {
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_displaycontrol &= ~LCD_BLINKON;
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command(LCD_DISPLAYCONTROL | _displaycontrol);
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}
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void LiquidCrystal_I2C::blink() {
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_displaycontrol |= LCD_BLINKON;
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command(LCD_DISPLAYCONTROL | _displaycontrol);
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}
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// These commands scroll the display without changing the RAM
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void LiquidCrystal_I2C::scrollDisplayLeft(void) {
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command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
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}
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void LiquidCrystal_I2C::scrollDisplayRight(void) {
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command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT);
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}
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// This is for text that flows Left to Right
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void LiquidCrystal_I2C::leftToRight(void) {
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_displaymode |= LCD_ENTRYLEFT;
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command(LCD_ENTRYMODESET | _displaymode);
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}
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// This is for text that flows Right to Left
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void LiquidCrystal_I2C::rightToLeft(void) {
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_displaymode &= ~LCD_ENTRYLEFT;
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command(LCD_ENTRYMODESET | _displaymode);
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}
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// This will 'right justify' text from the cursor
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void LiquidCrystal_I2C::autoscroll(void) {
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_displaymode |= LCD_ENTRYSHIFTINCREMENT;
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command(LCD_ENTRYMODESET | _displaymode);
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}
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// This will 'left justify' text from the cursor
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void LiquidCrystal_I2C::noAutoscroll(void) {
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_displaymode &= ~LCD_ENTRYSHIFTINCREMENT;
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command(LCD_ENTRYMODESET | _displaymode);
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}
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// Allows us to fill the first 8 CGRAM locations
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// with custom characters
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void LiquidCrystal_I2C::createChar(uint8_t location, uint8_t charmap[]) {
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location &= 0x7; // we only have 8 locations 0-7
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command(LCD_SETCGRAMADDR | (location << 3));
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for (int i=0; i<8; i++) {
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write(charmap[i]);
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}
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}
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// Turn the (optional) backlight off/on
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void LiquidCrystal_I2C::noBacklight(void) {
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_backlightval=LCD_NOBACKLIGHT;
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expanderWrite(0);
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}
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void LiquidCrystal_I2C::backlight(void) {
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_backlightval=LCD_BACKLIGHT;
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expanderWrite(0);
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}
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/*********** mid level commands, for sending data/cmds */
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inline void LiquidCrystal_I2C::command(uint8_t value) {
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send(value, 0);
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}
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inline size_t LiquidCrystal_I2C::write(uint8_t value) {
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send(value, Rs);
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return 0;
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}
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/************ low level data pushing commands **********/
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// write either command or data
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void LiquidCrystal_I2C::send(uint8_t value, uint8_t mode) {
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uint8_t highnib=value>>4;
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uint8_t lownib=value & 0x0F;
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write4bits((highnib)|mode);
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write4bits((lownib)|mode);
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}
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void LiquidCrystal_I2C::write4bits(uint8_t value) {
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expanderWrite(value);
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pulseEnable(value);
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}
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void LiquidCrystal_I2C::expanderWrite(uint8_t _data){
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Wire.beginTransmission(_Addr);
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Wire.write((int)(_data) | _backlightval);
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Wire.endTransmission();
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}
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void LiquidCrystal_I2C::pulseEnable(uint8_t _data){
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expanderWrite(_data | En); // En high
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delayMicroseconds(1); // enable pulse must be >450ns
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expanderWrite(_data & ~En); // En low
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delayMicroseconds(50); // commands need > 37us to settle
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}
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// Alias functions
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void LiquidCrystal_I2C::cursor_on(){
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cursor();
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}
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void LiquidCrystal_I2C::cursor_off(){
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noCursor();
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}
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void LiquidCrystal_I2C::blink_on(){
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blink();
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}
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void LiquidCrystal_I2C::blink_off(){
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noBlink();
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}
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void LiquidCrystal_I2C::load_custom_character(uint8_t char_num, uint8_t *rows){
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createChar(char_num, rows);
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}
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void LiquidCrystal_I2C::setBacklight(uint8_t new_val){
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if(new_val){
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backlight(); // turn backlight on
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}else{
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noBacklight(); // turn backlight off
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}
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}
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void LiquidCrystal_I2C::printstr(const char c[]){
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//This function is not identical to the function used for "real" I2C displays
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//it's here so the user sketch doesn't have to be changed
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print(c);
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}
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// unsupported API functions
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void LiquidCrystal_I2C::off(){}
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void LiquidCrystal_I2C::on(){}
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void LiquidCrystal_I2C::setDelay (int cmdDelay,int charDelay) {}
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uint8_t LiquidCrystal_I2C::status(){return 0;}
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uint8_t LiquidCrystal_I2C::keypad (){return 0;}
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uint8_t LiquidCrystal_I2C::init_bargraph(uint8_t graphtype){return 0;}
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void LiquidCrystal_I2C::draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end){}
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void LiquidCrystal_I2C::draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_row_end){}
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void LiquidCrystal_I2C::setContrast(uint8_t new_val){}
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@ -1,123 +0,0 @@
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// LiquidCrystal_I2C V2.0
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#ifndef LiquidCrystal_I2C_h
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#define LiquidCrystal_I2C_h
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#include <inttypes.h>
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#include "Print.h"
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#include <Wire.h>
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// commands
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#define LCD_CLEARDISPLAY 0x01
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#define LCD_RETURNHOME 0x02
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#define LCD_ENTRYMODESET 0x04
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#define LCD_DISPLAYCONTROL 0x08
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#define LCD_CURSORSHIFT 0x10
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#define LCD_FUNCTIONSET 0x20
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#define LCD_SETCGRAMADDR 0x40
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#define LCD_SETDDRAMADDR 0x80
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// flags for display entry mode
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#define LCD_ENTRYRIGHT 0x00
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#define LCD_ENTRYLEFT 0x02
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#define LCD_ENTRYSHIFTINCREMENT 0x01
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#define LCD_ENTRYSHIFTDECREMENT 0x00
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// flags for display on/off control
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#define LCD_DISPLAYON 0x04
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#define LCD_DISPLAYOFF 0x00
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#define LCD_CURSORON 0x02
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#define LCD_CURSOROFF 0x00
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#define LCD_BLINKON 0x01
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#define LCD_BLINKOFF 0x00
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// flags for display/cursor shift
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#define LCD_DISPLAYMOVE 0x08
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#define LCD_CURSORMOVE 0x00
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#define LCD_MOVERIGHT 0x04
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#define LCD_MOVELEFT 0x00
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// flags for function set
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#define LCD_8BITMODE 0x10
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#define LCD_4BITMODE 0x00
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#define LCD_2LINE 0x08
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#define LCD_1LINE 0x00
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#define LCD_5x10DOTS 0x04
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#define LCD_5x8DOTS 0x00
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// flags for backlight control
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#define LCD_BACKLIGHT 0x00
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#define LCD_NOBACKLIGHT 0x80
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#define En B00010000 // Enable bit
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#define Rw B00100000 // Read/Write bit
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#define Rs B01000000 // Register select bit
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class LiquidCrystal_I2C : public Print {
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public:
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LiquidCrystal_I2C(uint8_t lcd_Addr,uint8_t lcd_cols,uint8_t lcd_rows);
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void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS );
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void clear();
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void home();
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void noDisplay();
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void display();
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void noBlink();
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void blink();
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void noCursor();
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void cursor();
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void scrollDisplayLeft();
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void scrollDisplayRight();
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void printLeft();
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void printRight();
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void leftToRight();
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void rightToLeft();
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void shiftIncrement();
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void shiftDecrement();
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void noBacklight();
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void backlight();
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void autoscroll();
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void noAutoscroll();
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void createChar(uint8_t, uint8_t[]);
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void setCursor(uint8_t, uint8_t);
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virtual size_t write(uint8_t);
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void command(uint8_t);
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void init();
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////compatibility API function aliases
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void blink_on(); // alias for blink()
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void blink_off(); // alias for noBlink()
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void cursor_on(); // alias for cursor()
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void cursor_off(); // alias for noCursor()
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void setBacklight(uint8_t new_val); // alias for backlight() and nobacklight()
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void load_custom_character(uint8_t char_num, uint8_t *rows); // alias for createChar()
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void printstr(const char[]);
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////Unsupported API functions (not implemented in this library)
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uint8_t status();
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void setContrast(uint8_t new_val);
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uint8_t keypad();
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void setDelay(int,int);
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void on();
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void off();
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uint8_t init_bargraph(uint8_t graphtype);
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void draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end);
|
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void draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end);
|
||||
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private:
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void init_priv();
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void send(uint8_t, uint8_t);
|
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void write4bits(uint8_t);
|
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void expanderWrite(uint8_t);
|
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void pulseEnable(uint8_t);
|
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uint8_t _Addr;
|
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uint8_t _displayfunction;
|
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uint8_t _displaycontrol;
|
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uint8_t _displaymode;
|
||||
uint8_t _numlines;
|
||||
uint8_t _cols;
|
||||
uint8_t _rows;
|
||||
uint8_t _backlightval;
|
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};
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||||
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#endif
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@ -1,60 +0,0 @@
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#include <Wire.h>
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||||
#include <LiquidCrystal_I2C.h>
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||||
|
||||
uint8_t bell[8] = {0x4,0xe,0xe,0xe,0x1f,0x0,0x4};
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uint8_t note[8] = {0x2,0x3,0x2,0xe,0x1e,0xc,0x0};
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uint8_t clock[8] = {0x0,0xe,0x15,0x17,0x11,0xe,0x0};
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uint8_t heart[8] = {0x0,0xa,0x1f,0x1f,0xe,0x4,0x0};
|
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uint8_t duck[8] = {0x0,0xc,0x1d,0xf,0xf,0x6,0x0};
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uint8_t check[8] = {0x0,0x1,0x3,0x16,0x1c,0x8,0x0};
|
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uint8_t cross[8] = {0x0,0x1b,0xe,0x4,0xe,0x1b,0x0};
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uint8_t retarrow[8] = { 0x1,0x1,0x5,0x9,0x1f,0x8,0x4};
|
||||
|
||||
LiquidCrystal_I2C lcd(0x20,16,2); // set the LCD address to 0x20 for a 16 chars and 2 line display
|
||||
|
||||
void setup()
|
||||
{
|
||||
lcd.init(); // initialize the lcd
|
||||
lcd.backlight();
|
||||
|
||||
lcd.createChar(0, bell);
|
||||
lcd.createChar(1, note);
|
||||
lcd.createChar(2, clock);
|
||||
lcd.createChar(3, heart);
|
||||
lcd.createChar(4, duck);
|
||||
lcd.createChar(5, check);
|
||||
lcd.createChar(6, cross);
|
||||
lcd.createChar(7, retarrow);
|
||||
lcd.home();
|
||||
|
||||
lcd.print("Hello world...");
|
||||
lcd.setCursor(0, 1);
|
||||
lcd.print(" i ");
|
||||
lcd.write(3);
|
||||
lcd.print(" arduinos!");
|
||||
delay(5000);
|
||||
displayKeyCodes();
|
||||
|
||||
}
|
||||
|
||||
// display all keycodes
|
||||
void displayKeyCodes(void) {
|
||||
uint8_t i = 0;
|
||||
while (1) {
|
||||
lcd.clear();
|
||||
lcd.print("Codes 0x"); lcd.print(i, HEX);
|
||||
lcd.print("-0x"); lcd.print(i+16, HEX);
|
||||
lcd.setCursor(0, 1);
|
||||
for (int j=0; j<16; j++) {
|
||||
lcd.write(i+j);
|
||||
}
|
||||
i+=16;
|
||||
|
||||
delay(4000);
|
||||
}
|
||||
}
|
||||
|
||||
void loop()
|
||||
{
|
||||
|
||||
}
|
|
@ -1,17 +0,0 @@
|
|||
#include <Wire.h>
|
||||
#include <LiquidCrystal_I2C.h>
|
||||
|
||||
LiquidCrystal_I2C lcd(0x20,16,2); // set the LCD address to 0x20 for a 16 chars and 2 line display
|
||||
|
||||
void setup()
|
||||
{
|
||||
lcd.init(); // initialize the lcd
|
||||
|
||||
// Print a message to the LCD.
|
||||
lcd.backlight();
|
||||
lcd.print("Hello, world!");
|
||||
}
|
||||
|
||||
void loop()
|
||||
{
|
||||
}
|
|
@ -1,24 +0,0 @@
|
|||
#include <Wire.h>
|
||||
#include <LiquidCrystal_I2C.h>
|
||||
|
||||
LiquidCrystal_I2C lcd1(0x20,16,2); // set the LCD address of the first lcd to 0x20 for a 16 chars and 2 line display
|
||||
LiquidCrystal_I2C lcd2(0x21,16,2); // set the LCD address of the second lcd to 0x21 for a 16 chars and 2 line display
|
||||
|
||||
void setup()
|
||||
{
|
||||
lcd1.init(); // initialize the first lcd
|
||||
lcd2.init(); // initialize the second lcd
|
||||
|
||||
// Print a message on the first LCD.
|
||||
lcd1.backlight();
|
||||
lcd1.print("Hello, #1 world!");
|
||||
|
||||
// Print a message on the second LCD.
|
||||
lcd2.backlight();
|
||||
lcd2.print("Hello, #2 world!");
|
||||
|
||||
}
|
||||
|
||||
void loop()
|
||||
{
|
||||
}
|
|
@ -1,31 +0,0 @@
|
|||
/*
|
||||
* Displays text sent over the serial port (e.g. from the Serial Monitor) on
|
||||
* an attached LCD.
|
||||
*/
|
||||
#include <Wire.h>
|
||||
#include <LiquidCrystal_I2C.h>
|
||||
|
||||
LiquidCrystal_I2C lcd(0x20,16,2); // set the LCD address to 0x20 for a 16 chars and 2 line display
|
||||
|
||||
void setup()
|
||||
{
|
||||
lcd.init(); // initialize the lcd
|
||||
lcd.backlight();
|
||||
Serial.begin(9600);
|
||||
}
|
||||
|
||||
void loop()
|
||||
{
|
||||
// when characters arrive over the serial port...
|
||||
if (Serial.available()) {
|
||||
// wait a bit for the entire message to arrive
|
||||
delay(100);
|
||||
// clear the screen
|
||||
lcd.clear();
|
||||
// read all the available characters
|
||||
while (Serial.available() > 0) {
|
||||
// display each character to the LCD
|
||||
lcd.write(Serial.read());
|
||||
}
|
||||
}
|
||||
}
|
Binary file not shown.
Binary file not shown.
Before Width: | Height: | Size: 61 KiB |
Binary file not shown.
Binary file not shown.
Before Width: | Height: | Size: 457 KiB |
|
@ -1,55 +0,0 @@
|
|||
Notes for users with a Pollin.de interface board
|
||||
http://www.pollin.de/shop/dt/NDU4OTgxOTk-/Bausaetze_Module/Bausaetze/LCD_I2C_Modul.html
|
||||
|
||||
The pollin interface board will not work with de default library.
|
||||
To get it working two control lines to the LCD need to be changed.
|
||||
|
||||
Open file "LiquidCrystal_I2C.h" with a text editor like Notepad (not WordPad !)
|
||||
|
||||
In that file look for:
|
||||
#define En B00010000 // Enable bit
|
||||
#define Rw B00100000 // Read/Write bit
|
||||
#define Rs B01000000 // Register select bit
|
||||
|
||||
Replace these lines by:
|
||||
#define En B01000000 // Enable bit
|
||||
#define Rw B00100000 // Read/Write bit
|
||||
#define Rs B00010000 // Register select bit
|
||||
|
||||
|
||||
|
||||
People at Pollin also have misunderstood the PCF8574 Datasheet and list the wrong addresses on their PCB
|
||||
For PCF8574A the addressing is:
|
||||
|
||||
Jp3 Jp2 Jp1
|
||||
A2 A1 A0 Dec Hex
|
||||
L L L 56 0x38
|
||||
L L H 57 0x39
|
||||
L H L 64 0x40
|
||||
L H H 74 0x4A
|
||||
H L L 75 0x4B
|
||||
H L H 76 0x4C
|
||||
H H L 77 0x4D
|
||||
H H H 78 0x4E
|
||||
|
||||
They also seem to ship boards with a PCF8574
|
||||
For PCF8574 the addressing is:
|
||||
|
||||
Jp3 Jp2 Jp1
|
||||
A2 A1 A0 Dec Hex
|
||||
L L L 32 0x20
|
||||
L L H 33 0x21
|
||||
L H L 34 0x22
|
||||
L H H 35 0x23
|
||||
H L L 36 0x24
|
||||
H L H 37 0x25
|
||||
H H L 38 0x26
|
||||
H H H 39 0x27
|
||||
|
||||
|
||||
They have also chosen two rather high pull-up resistors (10K) for the I2C lines. Usually two 4K7 resistors should do the job.
|
||||
Please note that on a I2C bus only one device should have the pull-up resistors installed!
|
||||
|
||||
I hope this helps in getting your LCD working.
|
||||
|
||||
Mario
|
|
@ -1,36 +0,0 @@
|
|||
LiquidCrystal_I2C V2.0
|
||||
|
||||
The LiquidCrystal_I2C library is a modified version of the standard LiquidCrystal library as found on
|
||||
the Arduino website.
|
||||
This library is intended to be used when a parallel HD44780 compatible LCD is controlled over I2C using
|
||||
a PCF8574 extender (see datasheet for details).
|
||||
4 of the 8 outputs are used for LDC data lines 4 to 7.
|
||||
3 outputs are used for the Enable, register-select and Read/Write lines.
|
||||
The one output left can be used to control the backlight of the LCD (if available).
|
||||
For backlight control some extra resistors and a pnp-type transistor are required (for details see
|
||||
schematic diagram).
|
||||
|
||||
The PCF8574 extender is available in two versions, the PCF8574 and the PCF8574A.
|
||||
The only difference between the two is the I2C base address.
|
||||
The base address for the PCF8574 is 0x20 and the base address for the PCF8574A is 0x38.
|
||||
The examples included in this zip file assume the use of an PCF8574 set for address 0x20
|
||||
(A0, A1 and A3 grounded).
|
||||
|
||||
For compatibility reasons this library contains some aliases for functions that are known under different
|
||||
names in other libraries. This should make it fairly easy to implement the library in existing sketches
|
||||
without changing to much code.
|
||||
Functions not supported by this library will return nothing at all and in case a return value is expected
|
||||
the function will return 0.
|
||||
|
||||
Update 8-12-2011:
|
||||
Due to the relaese of Arduino IDE 1.0 some changes were made to the library to get it working under the new IDE.
|
||||
Because of these changes this version of the LiquidCrystal_I2C library can not be used for older IDE versions.
|
||||
The old version of the LiquidCrystal_I2Clibrary can be downloaded form http://www.xs4all.nl/~hmario/arduino/LiquidCrystal_I2C/V1.0/LiquidCrystal_I2C_V1.0.zip
|
||||
|
||||
Download the latest version from:
|
||||
http://www.xs4all.nl/~hmario/arduino/LiquidCrystal_I2C/LiquidCrystal_I2C.zip
|
||||
(Thanks to Ailton F. for beta testing.)
|
||||
|
||||
|
||||
Mario H.
|
||||
atmega@xs4all.nl
|
|
@ -1,47 +0,0 @@
|
|||
###########################################
|
||||
# Syntax Coloring Map For LiquidCrystal_I2C
|
||||
# Version 2.0
|
||||
###########################################
|
||||
|
||||
###########################################
|
||||
# Datatypes (KEYWORD1)
|
||||
###########################################
|
||||
|
||||
LiquidCrystal_I2C KEYWORD1
|
||||
|
||||
###########################################
|
||||
# Methods and Functions (KEYWORD2)
|
||||
###########################################
|
||||
init KEYWORD2
|
||||
begin KEYWORD2
|
||||
clear KEYWORD2
|
||||
home KEYWORD2
|
||||
noDisplay KEYWORD2
|
||||
display KEYWORD2
|
||||
noBlink KEYWORD2
|
||||
blink KEYWORD2
|
||||
noCursor KEYWORD2
|
||||
cursor KEYWORD2
|
||||
scrollDisplayLeft KEYWORD2
|
||||
scrollDisplayRight KEYWORD2
|
||||
leftToRight KEYWORD2
|
||||
rightToLeft KEYWORD2
|
||||
shiftIncrement KEYWORD2
|
||||
shiftDecrement KEYWORD2
|
||||
noBacklight KEYWORD2
|
||||
backlight KEYWORD2
|
||||
autoscroll KEYWORD2
|
||||
noAutoscroll KEYWORD2
|
||||
createChar KEYWORD2
|
||||
setCursor KEYWORD2
|
||||
print KEYWORD2
|
||||
blink_on KEYWORD2
|
||||
blink_off KEYWORD2
|
||||
cursor_on KEYWORD2
|
||||
cursor_off KEYWORD2
|
||||
setBacklight KEYWORD2
|
||||
load_custom_character KEYWORD2
|
||||
printstr KEYWORD2
|
||||
###########################################
|
||||
# Constants (LITERAL1)
|
||||
###########################################
|
|
@ -1,304 +0,0 @@
|
|||
// LiquidCrystal_I2C V2.0
|
||||
|
||||
#include "LiquidCrystal_I2C.h"
|
||||
#include <inttypes.h>
|
||||
#include "Wire.h"
|
||||
#include "Arduino.h"
|
||||
|
||||
|
||||
// When the display powers up, it is configured as follows:
|
||||
//
|
||||
// 1. Display clear
|
||||
// 2. Function set:
|
||||
// DL = 1; 8-bit interface data
|
||||
// N = 0; 1-line display
|
||||
// F = 0; 5x8 dot character font
|
||||
// 3. Display on/off control:
|
||||
// D = 0; Display off
|
||||
// C = 0; Cursor off
|
||||
// B = 0; Blinking off
|
||||
// 4. Entry mode set:
|
||||
// I/D = 1; Increment by 1
|
||||
// S = 0; No shift
|
||||
//
|
||||
// Note, however, that resetting the Arduino doesn't reset the LCD, so we
|
||||
// can't assume that its in that state when a sketch starts (and the
|
||||
// LiquidCrystal constructor is called).
|
||||
|
||||
LiquidCrystal_I2C::LiquidCrystal_I2C(uint8_t lcd_Addr,uint8_t lcd_cols,uint8_t lcd_rows)
|
||||
{
|
||||
_Addr = lcd_Addr;
|
||||
_cols = lcd_cols;
|
||||
_rows = lcd_rows;
|
||||
_backlightval = LCD_NOBACKLIGHT;
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::init(){
|
||||
init_priv();
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::init_priv()
|
||||
{
|
||||
Wire.begin();
|
||||
_displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
|
||||
begin(_cols, _rows);
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
|
||||
if (lines > 1) {
|
||||
_displayfunction |= LCD_2LINE;
|
||||
}
|
||||
_numlines = lines;
|
||||
|
||||
// for some 1 line displays you can select a 10 pixel high font
|
||||
if ((dotsize != 0) && (lines == 1)) {
|
||||
_displayfunction |= LCD_5x10DOTS;
|
||||
}
|
||||
|
||||
// SEE PAGE 45/46 FOR INITIALIZATION SPECIFICATION!
|
||||
// according to datasheet, we need at least 40ms after power rises above 2.7V
|
||||
// before sending commands. Arduino can turn on way befer 4.5V so we'll wait 50
|
||||
delayMicroseconds(50000);
|
||||
|
||||
// Now we pull both RS and R/W low to begin commands
|
||||
expanderWrite(_backlightval); // reset expanderand turn backlight off (Bit 8 =1)
|
||||
delay(1000);
|
||||
|
||||
//put the LCD into 4 bit mode
|
||||
// this is according to the hitachi HD44780 datasheet
|
||||
// figure 24, pg 46
|
||||
|
||||
// we start in 8bit mode, try to set 4 bit mode
|
||||
write4bits(0x03);
|
||||
delayMicroseconds(4500); // wait min 4.1ms
|
||||
|
||||
// second try
|
||||
write4bits(0x03);
|
||||
delayMicroseconds(4500); // wait min 4.1ms
|
||||
|
||||
// third go!
|
||||
write4bits(0x03);
|
||||
delayMicroseconds(150);
|
||||
|
||||
// finally, set to 4-bit interface
|
||||
write4bits(0x02);
|
||||
|
||||
|
||||
// set # lines, font size, etc.
|
||||
command(LCD_FUNCTIONSET | _displayfunction);
|
||||
|
||||
// turn the display on with no cursor or blinking default
|
||||
_displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF;
|
||||
display();
|
||||
|
||||
// clear it off
|
||||
clear();
|
||||
|
||||
// Initialize to default text direction (for roman languages)
|
||||
_displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
|
||||
|
||||
// set the entry mode
|
||||
command(LCD_ENTRYMODESET | _displaymode);
|
||||
|
||||
home();
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
/********** high level commands, for the user! */
|
||||
void LiquidCrystal_I2C::clear(){
|
||||
command(LCD_CLEARDISPLAY);// clear display, set cursor position to zero
|
||||
delayMicroseconds(2000); // this command takes a long time!
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::home(){
|
||||
command(LCD_RETURNHOME); // set cursor position to zero
|
||||
delayMicroseconds(2000); // this command takes a long time!
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::setCursor(uint8_t col, uint8_t row){
|
||||
int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
|
||||
if ( row > _numlines ) {
|
||||
row = _numlines-1; // we count rows starting w/0
|
||||
}
|
||||
command(LCD_SETDDRAMADDR | (col + row_offsets[row]));
|
||||
}
|
||||
|
||||
// Turn the display on/off (quickly)
|
||||
void LiquidCrystal_I2C::noDisplay() {
|
||||
_displaycontrol &= ~LCD_DISPLAYON;
|
||||
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
void LiquidCrystal_I2C::display() {
|
||||
_displaycontrol |= LCD_DISPLAYON;
|
||||
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
|
||||
// Turns the underline cursor on/off
|
||||
void LiquidCrystal_I2C::noCursor() {
|
||||
_displaycontrol &= ~LCD_CURSORON;
|
||||
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
void LiquidCrystal_I2C::cursor() {
|
||||
_displaycontrol |= LCD_CURSORON;
|
||||
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
|
||||
// Turn on and off the blinking cursor
|
||||
void LiquidCrystal_I2C::noBlink() {
|
||||
_displaycontrol &= ~LCD_BLINKON;
|
||||
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
void LiquidCrystal_I2C::blink() {
|
||||
_displaycontrol |= LCD_BLINKON;
|
||||
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
|
||||
// These commands scroll the display without changing the RAM
|
||||
void LiquidCrystal_I2C::scrollDisplayLeft(void) {
|
||||
command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
|
||||
}
|
||||
void LiquidCrystal_I2C::scrollDisplayRight(void) {
|
||||
command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT);
|
||||
}
|
||||
|
||||
// This is for text that flows Left to Right
|
||||
void LiquidCrystal_I2C::leftToRight(void) {
|
||||
_displaymode |= LCD_ENTRYLEFT;
|
||||
command(LCD_ENTRYMODESET | _displaymode);
|
||||
}
|
||||
|
||||
// This is for text that flows Right to Left
|
||||
void LiquidCrystal_I2C::rightToLeft(void) {
|
||||
_displaymode &= ~LCD_ENTRYLEFT;
|
||||
command(LCD_ENTRYMODESET | _displaymode);
|
||||
}
|
||||
|
||||
// This will 'right justify' text from the cursor
|
||||
void LiquidCrystal_I2C::autoscroll(void) {
|
||||
_displaymode |= LCD_ENTRYSHIFTINCREMENT;
|
||||
command(LCD_ENTRYMODESET | _displaymode);
|
||||
}
|
||||
|
||||
// This will 'left justify' text from the cursor
|
||||
void LiquidCrystal_I2C::noAutoscroll(void) {
|
||||
_displaymode &= ~LCD_ENTRYSHIFTINCREMENT;
|
||||
command(LCD_ENTRYMODESET | _displaymode);
|
||||
}
|
||||
|
||||
// Allows us to fill the first 8 CGRAM locations
|
||||
// with custom characters
|
||||
void LiquidCrystal_I2C::createChar(uint8_t location, uint8_t charmap[]) {
|
||||
location &= 0x7; // we only have 8 locations 0-7
|
||||
command(LCD_SETCGRAMADDR | (location << 3));
|
||||
for (int i=0; i<8; i++) {
|
||||
write(charmap[i]);
|
||||
}
|
||||
}
|
||||
|
||||
// Turn the (optional) backlight off/on
|
||||
void LiquidCrystal_I2C::noBacklight(void) {
|
||||
_backlightval=LCD_NOBACKLIGHT;
|
||||
expanderWrite(0);
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::backlight(void) {
|
||||
_backlightval=LCD_BACKLIGHT;
|
||||
expanderWrite(0);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*********** mid level commands, for sending data/cmds */
|
||||
|
||||
inline void LiquidCrystal_I2C::command(uint8_t value) {
|
||||
send(value, 0);
|
||||
}
|
||||
|
||||
inline size_t LiquidCrystal_I2C::write(uint8_t value) {
|
||||
send(value, Rs);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/************ low level data pushing commands **********/
|
||||
|
||||
// write either command or data
|
||||
void LiquidCrystal_I2C::send(uint8_t value, uint8_t mode) {
|
||||
uint8_t highnib=value>>4;
|
||||
uint8_t lownib=value & 0x0F;
|
||||
write4bits((highnib)|mode);
|
||||
write4bits((lownib)|mode);
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::write4bits(uint8_t value) {
|
||||
expanderWrite(value);
|
||||
pulseEnable(value);
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::expanderWrite(uint8_t _data){
|
||||
Wire.beginTransmission(_Addr);
|
||||
Wire.write((int)(_data) | _backlightval);
|
||||
Wire.endTransmission();
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::pulseEnable(uint8_t _data){
|
||||
expanderWrite(_data | En); // En high
|
||||
delayMicroseconds(1); // enable pulse must be >450ns
|
||||
|
||||
expanderWrite(_data & ~En); // En low
|
||||
delayMicroseconds(50); // commands need > 37us to settle
|
||||
}
|
||||
|
||||
|
||||
// Alias functions
|
||||
|
||||
void LiquidCrystal_I2C::cursor_on(){
|
||||
cursor();
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::cursor_off(){
|
||||
noCursor();
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::blink_on(){
|
||||
blink();
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::blink_off(){
|
||||
noBlink();
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::load_custom_character(uint8_t char_num, uint8_t *rows){
|
||||
createChar(char_num, rows);
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::setBacklight(uint8_t new_val){
|
||||
if(new_val){
|
||||
backlight(); // turn backlight on
|
||||
}else{
|
||||
noBacklight(); // turn backlight off
|
||||
}
|
||||
}
|
||||
|
||||
void LiquidCrystal_I2C::printstr(const char c[]){
|
||||
//This function is not identical to the function used for "real" I2C displays
|
||||
//it's here so the user sketch doesn't have to be changed
|
||||
print(c);
|
||||
}
|
||||
|
||||
|
||||
// unsupported API functions
|
||||
void LiquidCrystal_I2C::off(){}
|
||||
void LiquidCrystal_I2C::on(){}
|
||||
void LiquidCrystal_I2C::setDelay (int cmdDelay,int charDelay) {}
|
||||
uint8_t LiquidCrystal_I2C::status(){return 0;}
|
||||
uint8_t LiquidCrystal_I2C::keypad (){return 0;}
|
||||
uint8_t LiquidCrystal_I2C::init_bargraph(uint8_t graphtype){return 0;}
|
||||
void LiquidCrystal_I2C::draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end){}
|
||||
void LiquidCrystal_I2C::draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_row_end){}
|
||||
void LiquidCrystal_I2C::setContrast(uint8_t new_val){}
|
||||
|
||||
|
|
@ -1,123 +0,0 @@
|
|||
// LiquidCrystal_I2C V2.0
|
||||
|
||||
#ifndef LiquidCrystal_I2C_h
|
||||
#define LiquidCrystal_I2C_h
|
||||
|
||||
#include <inttypes.h>
|
||||
#include "Print.h"
|
||||
#include <Wire.h>
|
||||
|
||||
// commands
|
||||
#define LCD_CLEARDISPLAY 0x01
|
||||
#define LCD_RETURNHOME 0x02
|
||||
#define LCD_ENTRYMODESET 0x04
|
||||
#define LCD_DISPLAYCONTROL 0x08
|
||||
#define LCD_CURSORSHIFT 0x10
|
||||
#define LCD_FUNCTIONSET 0x20
|
||||
#define LCD_SETCGRAMADDR 0x40
|
||||
#define LCD_SETDDRAMADDR 0x80
|
||||
|
||||
// flags for display entry mode
|
||||
#define LCD_ENTRYRIGHT 0x00
|
||||
#define LCD_ENTRYLEFT 0x02
|
||||
#define LCD_ENTRYSHIFTINCREMENT 0x01
|
||||
#define LCD_ENTRYSHIFTDECREMENT 0x00
|
||||
|
||||
// flags for display on/off control
|
||||
#define LCD_DISPLAYON 0x04
|
||||
#define LCD_DISPLAYOFF 0x00
|
||||
#define LCD_CURSORON 0x02
|
||||
#define LCD_CURSOROFF 0x00
|
||||
#define LCD_BLINKON 0x01
|
||||
#define LCD_BLINKOFF 0x00
|
||||
|
||||
// flags for display/cursor shift
|
||||
#define LCD_DISPLAYMOVE 0x08
|
||||
#define LCD_CURSORMOVE 0x00
|
||||
#define LCD_MOVERIGHT 0x04
|
||||
#define LCD_MOVELEFT 0x00
|
||||
|
||||
// flags for function set
|
||||
#define LCD_8BITMODE 0x10
|
||||
#define LCD_4BITMODE 0x00
|
||||
#define LCD_2LINE 0x08
|
||||
#define LCD_1LINE 0x00
|
||||
#define LCD_5x10DOTS 0x04
|
||||
#define LCD_5x8DOTS 0x00
|
||||
|
||||
// flags for backlight control
|
||||
#define LCD_BACKLIGHT 0x00
|
||||
#define LCD_NOBACKLIGHT 0x80
|
||||
|
||||
#define En B00010000 // Enable bit
|
||||
#define Rw B00100000 // Read/Write bit
|
||||
#define Rs B01000000 // Register select bit
|
||||
|
||||
class LiquidCrystal_I2C : public Print {
|
||||
public:
|
||||
LiquidCrystal_I2C(uint8_t lcd_Addr,uint8_t lcd_cols,uint8_t lcd_rows);
|
||||
void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS );
|
||||
void clear();
|
||||
void home();
|
||||
void noDisplay();
|
||||
void display();
|
||||
void noBlink();
|
||||
void blink();
|
||||
void noCursor();
|
||||
void cursor();
|
||||
void scrollDisplayLeft();
|
||||
void scrollDisplayRight();
|
||||
void printLeft();
|
||||
void printRight();
|
||||
void leftToRight();
|
||||
void rightToLeft();
|
||||
void shiftIncrement();
|
||||
void shiftDecrement();
|
||||
void noBacklight();
|
||||
void backlight();
|
||||
void autoscroll();
|
||||
void noAutoscroll();
|
||||
void createChar(uint8_t, uint8_t[]);
|
||||
void setCursor(uint8_t, uint8_t);
|
||||
virtual size_t write(uint8_t);
|
||||
void command(uint8_t);
|
||||
void init();
|
||||
|
||||
////compatibility API function aliases
|
||||
void blink_on(); // alias for blink()
|
||||
void blink_off(); // alias for noBlink()
|
||||
void cursor_on(); // alias for cursor()
|
||||
void cursor_off(); // alias for noCursor()
|
||||
void setBacklight(uint8_t new_val); // alias for backlight() and nobacklight()
|
||||
void load_custom_character(uint8_t char_num, uint8_t *rows); // alias for createChar()
|
||||
void printstr(const char[]);
|
||||
|
||||
////Unsupported API functions (not implemented in this library)
|
||||
uint8_t status();
|
||||
void setContrast(uint8_t new_val);
|
||||
uint8_t keypad();
|
||||
void setDelay(int,int);
|
||||
void on();
|
||||
void off();
|
||||
uint8_t init_bargraph(uint8_t graphtype);
|
||||
void draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end);
|
||||
void draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end);
|
||||
|
||||
|
||||
private:
|
||||
void init_priv();
|
||||
void send(uint8_t, uint8_t);
|
||||
void write4bits(uint8_t);
|
||||
void expanderWrite(uint8_t);
|
||||
void pulseEnable(uint8_t);
|
||||
uint8_t _Addr;
|
||||
uint8_t _displayfunction;
|
||||
uint8_t _displaycontrol;
|
||||
uint8_t _displaymode;
|
||||
uint8_t _numlines;
|
||||
uint8_t _cols;
|
||||
uint8_t _rows;
|
||||
uint8_t _backlightval;
|
||||
};
|
||||
|
||||
#endif
|
|
@ -1,60 +0,0 @@
|
|||
#include <Wire.h>
|
||||
#include <LiquidCrystal_I2C.h>
|
||||
|
||||
uint8_t bell[8] = {0x4,0xe,0xe,0xe,0x1f,0x0,0x4};
|
||||
uint8_t note[8] = {0x2,0x3,0x2,0xe,0x1e,0xc,0x0};
|
||||
uint8_t clock[8] = {0x0,0xe,0x15,0x17,0x11,0xe,0x0};
|
||||
uint8_t heart[8] = {0x0,0xa,0x1f,0x1f,0xe,0x4,0x0};
|
||||
uint8_t duck[8] = {0x0,0xc,0x1d,0xf,0xf,0x6,0x0};
|
||||
uint8_t check[8] = {0x0,0x1,0x3,0x16,0x1c,0x8,0x0};
|
||||
uint8_t cross[8] = {0x0,0x1b,0xe,0x4,0xe,0x1b,0x0};
|
||||
uint8_t retarrow[8] = { 0x1,0x1,0x5,0x9,0x1f,0x8,0x4};
|
||||
|
||||
LiquidCrystal_I2C lcd(0x20,16,2); // set the LCD address to 0x20 for a 16 chars and 2 line display
|
||||
|
||||
void setup()
|
||||
{
|
||||
lcd.init(); // initialize the lcd
|
||||
lcd.backlight();
|
||||
|
||||
lcd.createChar(0, bell);
|
||||
lcd.createChar(1, note);
|
||||
lcd.createChar(2, clock);
|
||||
lcd.createChar(3, heart);
|
||||
lcd.createChar(4, duck);
|
||||
lcd.createChar(5, check);
|
||||
lcd.createChar(6, cross);
|
||||
lcd.createChar(7, retarrow);
|
||||
lcd.home();
|
||||
|
||||
lcd.print("Hello world...");
|
||||
lcd.setCursor(0, 1);
|
||||
lcd.print(" i ");
|
||||
lcd.write(3);
|
||||
lcd.print(" arduinos!");
|
||||
delay(5000);
|
||||
displayKeyCodes();
|
||||
|
||||
}
|
||||
|
||||
// display all keycodes
|
||||
void displayKeyCodes(void) {
|
||||
uint8_t i = 0;
|
||||
while (1) {
|
||||
lcd.clear();
|
||||
lcd.print("Codes 0x"); lcd.print(i, HEX);
|
||||
lcd.print("-0x"); lcd.print(i+16, HEX);
|
||||
lcd.setCursor(0, 1);
|
||||
for (int j=0; j<16; j++) {
|
||||
lcd.write(i+j);
|
||||
}
|
||||
i+=16;
|
||||
|
||||
delay(4000);
|
||||
}
|
||||
}
|
||||
|
||||
void loop()
|
||||
{
|
||||
|
||||
}
|
|
@ -1,17 +0,0 @@
|
|||
#include <Wire.h>
|
||||
#include <LiquidCrystal_I2C.h>
|
||||
|
||||
LiquidCrystal_I2C lcd(0x20,16,2); // set the LCD address to 0x20 for a 16 chars and 2 line display
|
||||
|
||||
void setup()
|
||||
{
|
||||
lcd.init(); // initialize the lcd
|
||||
|
||||
// Print a message to the LCD.
|
||||
lcd.backlight();
|
||||
lcd.print("Hello, world!");
|
||||
}
|
||||
|
||||
void loop()
|
||||
{
|
||||
}
|
|
@ -1,24 +0,0 @@
|
|||
#include <Wire.h>
|
||||
#include <LiquidCrystal_I2C.h>
|
||||
|
||||
LiquidCrystal_I2C lcd1(0x20,16,2); // set the LCD address of the first lcd to 0x20 for a 16 chars and 2 line display
|
||||
LiquidCrystal_I2C lcd2(0x21,16,2); // set the LCD address of the second lcd to 0x21 for a 16 chars and 2 line display
|
||||
|
||||
void setup()
|
||||
{
|
||||
lcd1.init(); // initialize the first lcd
|
||||
lcd2.init(); // initialize the second lcd
|
||||
|
||||
// Print a message on the first LCD.
|
||||
lcd1.backlight();
|
||||
lcd1.print("Hello, #1 world!");
|
||||
|
||||
// Print a message on the second LCD.
|
||||
lcd2.backlight();
|
||||
lcd2.print("Hello, #2 world!");
|
||||
|
||||
}
|
||||
|
||||
void loop()
|
||||
{
|
||||
}
|
|
@ -1,31 +0,0 @@
|
|||
/*
|
||||
* Displays text sent over the serial port (e.g. from the Serial Monitor) on
|
||||
* an attached LCD.
|
||||
*/
|
||||
#include <Wire.h>
|
||||
#include <LiquidCrystal_I2C.h>
|
||||
|
||||
LiquidCrystal_I2C lcd(0x20,16,2); // set the LCD address to 0x20 for a 16 chars and 2 line display
|
||||
|
||||
void setup()
|
||||
{
|
||||
lcd.init(); // initialize the lcd
|
||||
lcd.backlight();
|
||||
Serial.begin(9600);
|
||||
}
|
||||
|
||||
void loop()
|
||||
{
|
||||
// when characters arrive over the serial port...
|
||||
if (Serial.available()) {
|
||||
// wait a bit for the entire message to arrive
|
||||
delay(100);
|
||||
// clear the screen
|
||||
lcd.clear();
|
||||
// read all the available characters
|
||||
while (Serial.available() > 0) {
|
||||
// display each character to the LCD
|
||||
lcd.write(Serial.read());
|
||||
}
|
||||
}
|
||||
}
|
Binary file not shown.
Binary file not shown.
Before Width: | Height: | Size: 61 KiB |
Binary file not shown.
Binary file not shown.
Before Width: | Height: | Size: 457 KiB |
|
@ -1,55 +0,0 @@
|
|||
Notes for users with a Pollin.de interface board
|
||||
http://www.pollin.de/shop/dt/NDU4OTgxOTk-/Bausaetze_Module/Bausaetze/LCD_I2C_Modul.html
|
||||
|
||||
The pollin interface board will not work with de default library.
|
||||
To get it working two control lines to the LCD need to be changed.
|
||||
|
||||
Open file "LiquidCrystal_I2C.h" with a text editor like Notepad (not WordPad !)
|
||||
|
||||
In that file look for:
|
||||
#define En B00010000 // Enable bit
|
||||
#define Rw B00100000 // Read/Write bit
|
||||
#define Rs B01000000 // Register select bit
|
||||
|
||||
Replace these lines by:
|
||||
#define En B01000000 // Enable bit
|
||||
#define Rw B00100000 // Read/Write bit
|
||||
#define Rs B00010000 // Register select bit
|
||||
|
||||
|
||||
|
||||
People at Pollin also have misunderstood the PCF8574 Datasheet and list the wrong addresses on their PCB
|
||||
For PCF8574A the addressing is:
|
||||
|
||||
Jp3 Jp2 Jp1
|
||||
A2 A1 A0 Dec Hex
|
||||
L L L 56 0x38
|
||||
L L H 57 0x39
|
||||
L H L 64 0x40
|
||||
L H H 74 0x4A
|
||||
H L L 75 0x4B
|
||||
H L H 76 0x4C
|
||||
H H L 77 0x4D
|
||||
H H H 78 0x4E
|
||||
|
||||
They also seem to ship boards with a PCF8574
|
||||
For PCF8574 the addressing is:
|
||||
|
||||
Jp3 Jp2 Jp1
|
||||
A2 A1 A0 Dec Hex
|
||||
L L L 32 0x20
|
||||
L L H 33 0x21
|
||||
L H L 34 0x22
|
||||
L H H 35 0x23
|
||||
H L L 36 0x24
|
||||
H L H 37 0x25
|
||||
H H L 38 0x26
|
||||
H H H 39 0x27
|
||||
|
||||
|
||||
They have also chosen two rather high pull-up resistors (10K) for the I2C lines. Usually two 4K7 resistors should do the job.
|
||||
Please note that on a I2C bus only one device should have the pull-up resistors installed!
|
||||
|
||||
I hope this helps in getting your LCD working.
|
||||
|
||||
Mario
|
|
@ -1,36 +0,0 @@
|
|||
LiquidCrystal_I2C V2.0
|
||||
|
||||
The LiquidCrystal_I2C library is a modified version of the standard LiquidCrystal library as found on
|
||||
the Arduino website.
|
||||
This library is intended to be used when a parallel HD44780 compatible LCD is controlled over I2C using
|
||||
a PCF8574 extender (see datasheet for details).
|
||||
4 of the 8 outputs are used for LDC data lines 4 to 7.
|
||||
3 outputs are used for the Enable, register-select and Read/Write lines.
|
||||
The one output left can be used to control the backlight of the LCD (if available).
|
||||
For backlight control some extra resistors and a pnp-type transistor are required (for details see
|
||||
schematic diagram).
|
||||
|
||||
The PCF8574 extender is available in two versions, the PCF8574 and the PCF8574A.
|
||||
The only difference between the two is the I2C base address.
|
||||
The base address for the PCF8574 is 0x20 and the base address for the PCF8574A is 0x38.
|
||||
The examples included in this zip file assume the use of an PCF8574 set for address 0x20
|
||||
(A0, A1 and A3 grounded).
|
||||
|
||||
For compatibility reasons this library contains some aliases for functions that are known under different
|
||||
names in other libraries. This should make it fairly easy to implement the library in existing sketches
|
||||
without changing to much code.
|
||||
Functions not supported by this library will return nothing at all and in case a return value is expected
|
||||
the function will return 0.
|
||||
|
||||
Update 8-12-2011:
|
||||
Due to the relaese of Arduino IDE 1.0 some changes were made to the library to get it working under the new IDE.
|
||||
Because of these changes this version of the LiquidCrystal_I2C library can not be used for older IDE versions.
|
||||
The old version of the LiquidCrystal_I2Clibrary can be downloaded form http://www.xs4all.nl/~hmario/arduino/LiquidCrystal_I2C/V1.0/LiquidCrystal_I2C_V1.0.zip
|
||||
|
||||
Download the latest version from:
|
||||
http://www.xs4all.nl/~hmario/arduino/LiquidCrystal_I2C/LiquidCrystal_I2C.zip
|
||||
(Thanks to Ailton F. for beta testing.)
|
||||
|
||||
|
||||
Mario H.
|
||||
atmega@xs4all.nl
|
|
@ -1,47 +0,0 @@
|
|||
###########################################
|
||||
# Syntax Coloring Map For LiquidCrystal_I2C
|
||||
# Version 2.0
|
||||
###########################################
|
||||
|
||||
###########################################
|
||||
# Datatypes (KEYWORD1)
|
||||
###########################################
|
||||
|
||||
LiquidCrystal_I2C KEYWORD1
|
||||
|
||||
###########################################
|
||||
# Methods and Functions (KEYWORD2)
|
||||
###########################################
|
||||
init KEYWORD2
|
||||
begin KEYWORD2
|
||||
clear KEYWORD2
|
||||
home KEYWORD2
|
||||
noDisplay KEYWORD2
|
||||
display KEYWORD2
|
||||
noBlink KEYWORD2
|
||||
blink KEYWORD2
|
||||
noCursor KEYWORD2
|
||||
cursor KEYWORD2
|
||||
scrollDisplayLeft KEYWORD2
|
||||
scrollDisplayRight KEYWORD2
|
||||
leftToRight KEYWORD2
|
||||
rightToLeft KEYWORD2
|
||||
shiftIncrement KEYWORD2
|
||||
shiftDecrement KEYWORD2
|
||||
noBacklight KEYWORD2
|
||||
backlight KEYWORD2
|
||||
autoscroll KEYWORD2
|
||||
noAutoscroll KEYWORD2
|
||||
createChar KEYWORD2
|
||||
setCursor KEYWORD2
|
||||
print KEYWORD2
|
||||
blink_on KEYWORD2
|
||||
blink_off KEYWORD2
|
||||
cursor_on KEYWORD2
|
||||
cursor_off KEYWORD2
|
||||
setBacklight KEYWORD2
|
||||
load_custom_character KEYWORD2
|
||||
printstr KEYWORD2
|
||||
###########################################
|
||||
# Constants (LITERAL1)
|
||||
###########################################
|
Loading…
Reference in New Issue