Bracken Dawson
12 years ago
27 changed files with 1987 additions and 294 deletions
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#define __PROG_TYPES_COMPAT__ |
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#include "LiquidCrystalRus.h" |
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#include <stdio.h> |
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#include <string.h> |
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#include <inttypes.h> |
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#include <avr/pgmspace.h> |
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#if defined(ARDUINO) && ARDUINO >= 100 |
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#include "Arduino.h" |
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#else |
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#include "WProgram.h" |
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#endif |
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// it is a russian alphabet translation
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// except 0401 --> 0xa2 = ╗, 0451 --> 0xb5
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const PROGMEM prog_uchar utf_recode[] = |
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{ 0x41,0xa0,0x42,0xa1,0xe0,0x45,0xa3,0xa4,0xa5,0xa6,0x4b,0xa7,0x4d,0x48,0x4f, |
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0xa8,0x50,0x43,0x54,0xa9,0xaa,0x58,0xe1,0xab,0xac,0xe2,0xad,0xae,0x62,0xaf,0xb0,0xb1, |
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0x61,0xb2,0xb3,0xb4,0xe3,0x65,0xb6,0xb7,0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0x6f, |
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0xbe,0x70,0x63,0xbf,0x79,0xe4,0x78,0xe5,0xc0,0xc1,0xe6,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7 |
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}; |
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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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//
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// modified 27 Jul 2011
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// by Ilya V. Danilov http://mk90.ru/
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LiquidCrystalRus::LiquidCrystalRus(uint8_t rs, uint8_t rw, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, |
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uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7) |
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{ |
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init(0, rs, rw, enable, d0, d1, d2, d3, d4, d5, d6, d7); |
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} |
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LiquidCrystalRus::LiquidCrystalRus(uint8_t rs, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, |
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uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7) |
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{ |
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init(0, rs, 255, enable, d0, d1, d2, d3, d4, d5, d6, d7); |
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} |
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LiquidCrystalRus::LiquidCrystalRus(uint8_t rs, uint8_t rw, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3) |
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{ |
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init(1, rs, rw, enable, d0, d1, d2, d3, 0, 0, 0, 0); |
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} |
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LiquidCrystalRus::LiquidCrystalRus(uint8_t rs, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3) |
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{ |
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init(1, rs, 255, enable, d0, d1, d2, d3, 0, 0, 0, 0); |
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} |
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void LiquidCrystalRus::init(uint8_t fourbitmode, uint8_t rs, uint8_t rw, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, |
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uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7) |
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{ |
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_rs_pin = rs; |
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_rw_pin = rw; |
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_enable_pin = enable; |
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_data_pins[0] = d0; |
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_data_pins[1] = d1; |
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_data_pins[2] = d2; |
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_data_pins[3] = d3; |
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_data_pins[4] = d4; |
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_data_pins[5] = d5; |
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_data_pins[6] = d6; |
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_data_pins[7] = d7; |
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pinMode(_rs_pin, OUTPUT); |
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// we can save 1 pin by not using RW. Indicate by passing 255 instead of pin#
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if (_rw_pin != 255) { |
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pinMode(_rw_pin, OUTPUT); |
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} |
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pinMode(_enable_pin, OUTPUT); |
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if (fourbitmode) |
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_displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS; |
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else |
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_displayfunction = LCD_8BITMODE | LCD_1LINE | LCD_5x8DOTS; |
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begin(16, 1); |
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} |
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void LiquidCrystalRus::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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_currline = 0; |
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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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digitalWrite(_rs_pin, LOW); |
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digitalWrite(_enable_pin, LOW); |
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if (_rw_pin != 255) { |
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digitalWrite(_rw_pin, LOW); |
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} |
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//put the LCD into 4 bit or 8 bit mode
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if (! (_displayfunction & LCD_8BITMODE)) { |
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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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writeNbits(0x03,4); |
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delayMicroseconds(4500); // wait min 4.1ms
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// second try
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writeNbits(0x03,4); |
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delayMicroseconds(4500); // wait min 4.1ms
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// third go!
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writeNbits(0x03,4); |
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delayMicroseconds(150); |
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// finally, set to 8-bit interface
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writeNbits(0x02,4); |
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} else { |
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// this is according to the hitachi HD44780 datasheet
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// page 45 figure 23
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// Send function set command sequence
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command(LCD_FUNCTIONSET | _displayfunction); |
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delayMicroseconds(4500); // wait more than 4.1ms
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// second try
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command(LCD_FUNCTIONSET | _displayfunction); |
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delayMicroseconds(150); |
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// third go
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command(LCD_FUNCTIONSET | _displayfunction); |
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} |
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// finally, 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 romance 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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} |
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void LiquidCrystalRus::setDRAMModel(uint8_t model) { |
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_dram_model = model; |
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} |
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/********** high level commands, for the user! */ |
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void LiquidCrystalRus::clear() |
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{ |
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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 LiquidCrystalRus::home() |
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{ |
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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 LiquidCrystalRus::setCursor(uint8_t col, uint8_t row) |
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{ |
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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 LiquidCrystalRus::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 LiquidCrystalRus::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 LiquidCrystalRus::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 LiquidCrystalRus::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 LiquidCrystalRus::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 LiquidCrystalRus::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 LiquidCrystalRus::scrollDisplayLeft(void) { |
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command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT); |
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} |
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void LiquidCrystalRus::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 LiquidCrystalRus::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 LiquidCrystalRus::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 LiquidCrystalRus::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 LiquidCrystalRus::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 LiquidCrystalRus::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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/*********** mid level commands, for sending data/cmds */ |
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inline void LiquidCrystalRus::command(uint8_t value) { |
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send(value, LOW); |
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} |
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#if defined(ARDUINO) && ARDUINO >= 100 |
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size_t LiquidCrystalRus::write(uint8_t value) |
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#else |
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void LiquidCrystalRus::write(uint8_t value) |
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#endif |
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{ |
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uint8_t out_char=value; |
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if (_dram_model == LCD_DRAM_WH1601) { |
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uint8_t ac=recv(LOW) & 0x7f; |
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if (ac>7 && ac<0x14) command(LCD_SETDDRAMADDR | (0x40+ac-8)); |
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} |
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if (value>=0x80) { // UTF-8 handling
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if (value >= 0xc0) { |
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utf_hi_char = value - 0xd0; |
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} else { |
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value &= 0x3f; |
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if (!utf_hi_char && (value == 1)) |
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send(0xa2,HIGH); // ╗
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else if ((utf_hi_char == 1) && (value == 0x11)) |
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send(0xb5,HIGH); // ╦
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else |
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send(pgm_read_byte_near(utf_recode + value + (utf_hi_char<<6) - 0x10), HIGH); |
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} |
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} else send(out_char, HIGH); |
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#if defined(ARDUINO) && ARDUINO >= 100 |
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return 1; // assume sucess
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#endif |
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} |
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/************ low level data pushing commands **********/ |
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// write either command or data, with automatic 4/8-bit selection
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void LiquidCrystalRus::send(uint8_t value, uint8_t mode) { |
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digitalWrite(_rs_pin, mode); |
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// if there is a RW pin indicated, set it low to Write
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if (_rw_pin != 255) { |
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digitalWrite(_rw_pin, LOW); |
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} |
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if (_displayfunction & LCD_8BITMODE) { |
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writeNbits(value,8); |
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} else { |
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writeNbits(value>>4,4); |
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writeNbits(value,4); |
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} |
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} |
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// read data, with automatic 4/8-bit selection
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uint8_t LiquidCrystalRus::recv(uint8_t mode) { |
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uint8_t retval; |
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digitalWrite(_rs_pin, mode); |
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// if there is a RW pin indicated, set it low to Write
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if (_rw_pin != 255) { |
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digitalWrite(_rw_pin, HIGH); |
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} |
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if (_displayfunction & LCD_8BITMODE) { |
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retval = readNbits(8); |
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} else { |
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retval = readNbits(4) << 4; |
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retval |= readNbits(4); |
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} |
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return retval; |
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} |
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void LiquidCrystalRus::pulseEnable() { |
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digitalWrite(_enable_pin, LOW); |
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delayMicroseconds(1); |
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digitalWrite(_enable_pin, HIGH); |
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delayMicroseconds(1); // enable pulse must be >450ns
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digitalWrite(_enable_pin, LOW); |
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delayMicroseconds(100); // commands need > 37us to settle
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} |
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void LiquidCrystalRus::writeNbits(uint8_t value, uint8_t n) { |
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for (int i = 0; i < n; i++) { |
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pinMode(_data_pins[i], OUTPUT); |
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digitalWrite(_data_pins[i], (value >> i) & 0x01); |
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} |
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pulseEnable(); |
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} |
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uint8_t LiquidCrystalRus::readNbits(uint8_t n) { |
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uint8_t retval=0; |
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for (int i = 0; i < n; i++) { |
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pinMode(_data_pins[i], INPUT); |
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} |
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digitalWrite(_enable_pin, LOW); |
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delayMicroseconds(1); |
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digitalWrite(_enable_pin, HIGH); |
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delayMicroseconds(1); // enable pulse must be >450ns
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for (int i = 0; i < n; i++) { |
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retval |= (digitalRead(_data_pins[i]) == HIGH)?(1 << i):0; |
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} |
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digitalWrite(_enable_pin, LOW); |
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return retval; |
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} |
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@ -0,0 +1,129 @@ |
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//
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// based on LiquidCrystal library from ArduinoIDE, see http://arduino.cc
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// modified 27 Jul 2011
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// by Ilya V. Danilov http://mk90.ru/
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//
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#ifndef LiquidCrystalRus_h |
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#define LiquidCrystalRus_h |
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#include <inttypes.h> |
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#include "Print.h" |
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|
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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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|
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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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|
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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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|
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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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// enum for
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#define LCD_DRAM_Normal 0x00 |
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#define LCD_DRAM_WH1601 0x01 |
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class LiquidCrystalRus : public Print { |
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public: |
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LiquidCrystalRus(uint8_t rs, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, |
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uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7); |
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LiquidCrystalRus(uint8_t rs, uint8_t rw, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, |
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uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7); |
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LiquidCrystalRus(uint8_t rs, uint8_t rw, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3); |
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LiquidCrystalRus(uint8_t rs, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3); |
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|
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void init(uint8_t fourbitmode, uint8_t rs, uint8_t rw, uint8_t enable, |
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uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, |
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uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7); |
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|
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void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS); |
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|
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void clear(); |
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void home(); |
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|
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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 leftToRight(); |
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void rightToLeft(); |
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void autoscroll(); |
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void noAutoscroll(); |
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|
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void createChar(uint8_t, uint8_t[]); |
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void setCursor(uint8_t, uint8_t); |
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#if defined(ARDUINO) && ARDUINO >= 100 |
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virtual size_t write(uint8_t); |
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using Print::write; |
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#else |
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virtual void write(uint8_t); |
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#endif |
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|
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void command(uint8_t); |
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|
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void setDRAMModel(uint8_t); |
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|
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private: |
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void send(uint8_t, uint8_t); |
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void writeNbits(uint8_t, uint8_t); |
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uint8_t recv(uint8_t); |
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uint8_t readNbits(uint8_t); |
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void pulseEnable(); |
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|
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uint8_t _rs_pin; // LOW: command. HIGH: character.
|
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uint8_t _rw_pin; // LOW: write to LCD. HIGH: read from LCD.
|
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uint8_t _enable_pin; // activated by a HIGH pulse.
|
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uint8_t _data_pins[8]; |
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|
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uint8_t _displayfunction; |
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uint8_t _displaycontrol; |
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uint8_t _displaymode; |
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|
|||
uint8_t _initialized; |
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|
|||
uint8_t _numlines,_currline; |
|||
|
|||
uint8_t _dram_model; |
|||
uint8_t utf_hi_char; // UTF-8 high part
|
|||
}; |
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|
|||
#endif |
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