719 lines
18 KiB
C++
719 lines
18 KiB
C++
#include "LiquidCrystal_Prusa.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 "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 it's in that state when a sketch starts (and the
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// LiquidCrystal_Prusa constructor is called).
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LiquidCrystal_Prusa::LiquidCrystal_Prusa(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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LiquidCrystal_Prusa::LiquidCrystal_Prusa(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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LiquidCrystal_Prusa::LiquidCrystal_Prusa(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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LiquidCrystal_Prusa::LiquidCrystal_Prusa(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 LiquidCrystal_Prusa::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 LiquidCrystal_Prusa::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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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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} 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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delayMicroseconds(60);
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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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delayMicroseconds(60);
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// clear it off
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clear();
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delayMicroseconds(3000);
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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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delayMicroseconds(60);
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_escape[0] = 0;
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}
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void LiquidCrystal_Prusa::begin_noclear(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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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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} 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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delayMicroseconds(60);
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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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delayMicroseconds(60);
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// clear it off
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//clear();
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home();
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delayMicroseconds(1600);
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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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delayMicroseconds(60);
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setCursor(8,0);
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print(" ");
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setCursor(8,1);
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print(" ");
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setCursor(6,2);
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print(" ");
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}
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/********** high level commands, for the user! */
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void LiquidCrystal_Prusa::clear()
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{
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command(LCD_CLEARDISPLAY); // clear display, set cursor position to zero
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delayMicroseconds(1600); // this command takes a long time
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}
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void LiquidCrystal_Prusa::home()
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{
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command(LCD_RETURNHOME); // set cursor position to zero
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delayMicroseconds(1600); // this command takes a long time!
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}
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void LiquidCrystal_Prusa::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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_currline = row;
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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_Prusa::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_Prusa::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_Prusa::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_Prusa::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_Prusa::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_Prusa::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_Prusa::scrollDisplayLeft(void) {
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command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
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}
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void LiquidCrystal_Prusa::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_Prusa::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_Prusa::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_Prusa::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_Prusa::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_Prusa::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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send(charmap[i], HIGH);
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}
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/*********** mid level commands, for sending data/cmds */
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inline void LiquidCrystal_Prusa::command(uint8_t value) {
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send(value, LOW);
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}
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inline size_t LiquidCrystal_Prusa::write(uint8_t value) {
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if (value == '\n')
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{
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if (_currline > 3) _currline = -1;
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setCursor(0, _currline + 1); // LF
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return 1;
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}
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if (_escape[0] || (value == 0x1b))
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return escape_write(value);
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send(value, HIGH);
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return 1; // assume sucess
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}
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//Supported VT100 escape codes:
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//EraseScreen "\x1b[2J"
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//CursorHome "\x1b[%d;%dH"
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//CursorShow "\x1b[?25h"
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//CursorHide "\x1b[?25l"
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inline size_t LiquidCrystal_Prusa::escape_write(uint8_t chr)
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{
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#define escape_cnt (_escape[0]) //escape character counter
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#define is_num_msk (_escape[1]) //numeric character bit mask
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#define chr_is_num (is_num_msk & 0x01) //current character is numeric
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#define e_2_is_num (is_num_msk & 0x04) //escape char 2 is numeric
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#define e_3_is_num (is_num_msk & 0x08) //...
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#define e_4_is_num (is_num_msk & 0x10)
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#define e_5_is_num (is_num_msk & 0x20)
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#define e_6_is_num (is_num_msk & 0x40)
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#define e_7_is_num (is_num_msk & 0x80)
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#define e2_num (_escape[2] - '0') //number from character 2
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#define e3_num (_escape[3] - '0') //number from character 3
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#define e23_num (10*e2_num+e3_num) //number from characters 2 and 3
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#define e4_num (_escape[4] - '0') //number from character 4
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#define e5_num (_escape[5] - '0') //number from character 5
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#define e45_num (10*e4_num+e5_num) //number from characters 4 and 5
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#define e6_num (_escape[6] - '0') //number from character 6
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#define e56_num (10*e5_num+e6_num) //number from characters 5 and 6
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if (escape_cnt > 1) // escape length > 1 = "\x1b["
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{
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_escape[escape_cnt] = chr; // store current char
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if ((chr >= '0') && (chr <= '9')) // char is numeric
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is_num_msk |= (1 | (1 << escape_cnt)); //set mask
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else
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is_num_msk &= ~1; //clear mask
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}
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switch (escape_cnt++)
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{
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case 0:
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if (chr == 0x1b) return 1; // escape = "\x1b"
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break;
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case 1:
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is_num_msk = 0x00; // reset 'is number' bit mask
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if (chr == '[') return 1; // escape = "\x1b["
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break;
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case 2:
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switch (chr)
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{
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case '2': return 1; // escape = "\x1b[2"
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case '?': return 1; // escape = "\x1b[?"
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default:
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if (chr_is_num) return 1; // escape = "\x1b[%1d"
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}
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break;
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case 3:
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switch (_escape[2])
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{
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case '?': // escape = "\x1b[?"
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if (chr == '2') return 1; // escape = "\x1b[?2"
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break;
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case '2':
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if (chr == 'J') // escape = "\x1b[2J"
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{ clear(); _currline = 0; break; } // EraseScreen
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default:
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if (e_2_is_num && // escape = "\x1b[%1d"
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((chr == ';') || // escape = "\x1b[%1d;"
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chr_is_num)) // escape = "\x1b[%2d"
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return 1;
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}
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break;
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case 4:
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switch (_escape[2])
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{
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case '?': // "\x1b[?"
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if ((_escape[3] == '2') && (chr == '5')) return 1; // escape = "\x1b[?25"
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break;
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default:
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if (e_2_is_num) // escape = "\x1b[%1d"
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{
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if ((_escape[3] == ';') && chr_is_num) return 1; // escape = "\x1b[%1d;%1d"
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else if (e_3_is_num && (chr == ';')) return 1; // escape = "\x1b[%2d;"
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}
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}
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break;
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case 5:
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switch (_escape[2])
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{
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case '?':
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if ((_escape[3] == '2') && (_escape[4] == '5')) // escape = "\x1b[?25"
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switch (chr)
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{
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case 'h': // escape = "\x1b[?25h"
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void cursor(); // CursorShow
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break;
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case 'l': // escape = "\x1b[?25l"
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noCursor(); // CursorHide
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break;
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}
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break;
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default:
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if (e_2_is_num) // escape = "\x1b[%1d"
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{
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if ((_escape[3] == ';') && e_4_is_num) // escape = "\x1b%1d;%1dH"
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{
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if (chr == 'H') // escape = "\x1b%1d;%1dH"
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setCursor(e4_num, e2_num); // CursorHome
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else if (chr_is_num)
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return 1; // escape = "\x1b%1d;%2d"
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}
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else if (e_3_is_num && (_escape[4] == ';') && chr_is_num)
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return 1; // escape = "\x1b%2d;%1d"
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}
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}
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break;
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case 6:
|
|
if (e_2_is_num) // escape = "\x1b[%1d"
|
|
{
|
|
if ((_escape[3] == ';') && e_4_is_num && e_5_is_num && (chr == 'H')) // escape = "\x1b%1d;%2dH"
|
|
setCursor(e45_num, e2_num); // CursorHome
|
|
else if (e_3_is_num && (_escape[4] == ';') && e_5_is_num) // escape = "\x1b%2d;%1d"
|
|
{
|
|
if (chr == 'H') // escape = "\x1b%2d;%1dH"
|
|
setCursor(e5_num, e23_num); // CursorHome
|
|
else if (chr_is_num) // "\x1b%2d;%2d"
|
|
return 1;
|
|
}
|
|
}
|
|
break;
|
|
case 7:
|
|
if (e_2_is_num && e_3_is_num && (_escape[4] == ';')) // "\x1b[%2d;"
|
|
if (e_5_is_num && e_6_is_num && (chr == 'H')) // "\x1b[%2d;%2dH"
|
|
setCursor(e56_num, e23_num); // CursorHome
|
|
break;
|
|
}
|
|
escape_cnt = 0; // reset escape
|
|
end:
|
|
return 1; // assume sucess
|
|
}
|
|
|
|
|
|
/************ low level data pushing commands **********/
|
|
|
|
// write either command or data, with automatic 4/8-bit selection
|
|
void LiquidCrystal_Prusa::send(uint8_t value, uint8_t mode) {
|
|
digitalWrite(_rs_pin, mode);
|
|
|
|
// if there is a RW pin indicated, set it low to Write
|
|
if (_rw_pin != 255) {
|
|
digitalWrite(_rw_pin, LOW);
|
|
}
|
|
|
|
if (_displayfunction & LCD_8BITMODE) {
|
|
write8bits(value);
|
|
} else {
|
|
write4bits(value>>4);
|
|
write4bits(value);
|
|
}
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::pulseEnable(void) {
|
|
digitalWrite(_enable_pin, LOW);
|
|
delayMicroseconds(1);
|
|
digitalWrite(_enable_pin, HIGH);
|
|
delayMicroseconds(1); // enable pulse must be >450ns
|
|
digitalWrite(_enable_pin, LOW);
|
|
delayMicroseconds(100); // commands need > 37us to settle
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::write4bits(uint8_t value) {
|
|
for (int i = 0; i < 4; i++) {
|
|
pinMode(_data_pins[i], OUTPUT);
|
|
digitalWrite(_data_pins[i], (value >> i) & 0x01);
|
|
}
|
|
|
|
pulseEnable();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::write8bits(uint8_t value) {
|
|
for (int i = 0; i < 8; i++) {
|
|
pinMode(_data_pins[i], OUTPUT);
|
|
digitalWrite(_data_pins[i], (value >> i) & 0x01);
|
|
}
|
|
|
|
pulseEnable();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::print(const char* s)
|
|
{
|
|
while (*s) write(*(s++));
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::print(char c, int base)
|
|
{
|
|
print((long) c, base);
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::print(unsigned char b, int base)
|
|
{
|
|
print((unsigned long) b, base);
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::print(int n, int base)
|
|
{
|
|
print((long) n, base);
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::print(unsigned int n, int base)
|
|
{
|
|
print((unsigned long) n, base);
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::print(long n, int base)
|
|
{
|
|
if (base == 0) {
|
|
write(n);
|
|
} else if (base == 10) {
|
|
if (n < 0) {
|
|
print('-');
|
|
n = -n;
|
|
}
|
|
printNumber(n, 10);
|
|
} else {
|
|
printNumber(n, base);
|
|
}
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::print(unsigned long n, int base)
|
|
{
|
|
if (base == 0) write(n);
|
|
else printNumber(n, base);
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::print(double n, int digits)
|
|
{
|
|
printFloat(n, digits);
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::println(void)
|
|
{
|
|
print('\r');
|
|
print('\n');
|
|
}
|
|
|
|
/*void LiquidCrystal_Prusa::println(const String &s)
|
|
{
|
|
print(s);
|
|
println();
|
|
}*/
|
|
|
|
void LiquidCrystal_Prusa::println(const char c[])
|
|
{
|
|
print(c);
|
|
println();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::println(char c, int base)
|
|
{
|
|
print(c, base);
|
|
println();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::println(unsigned char b, int base)
|
|
{
|
|
print(b, base);
|
|
println();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::println(int n, int base)
|
|
{
|
|
print(n, base);
|
|
println();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::println(unsigned int n, int base)
|
|
{
|
|
print(n, base);
|
|
println();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::println(long n, int base)
|
|
{
|
|
print(n, base);
|
|
println();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::println(unsigned long n, int base)
|
|
{
|
|
print(n, base);
|
|
println();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::println(double n, int digits)
|
|
{
|
|
print(n, digits);
|
|
println();
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::printNumber(unsigned long n, uint8_t base)
|
|
{
|
|
unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars.
|
|
unsigned long i = 0;
|
|
|
|
if (n == 0) {
|
|
print('0');
|
|
return;
|
|
}
|
|
|
|
while (n > 0) {
|
|
buf[i++] = n % base;
|
|
n /= base;
|
|
}
|
|
|
|
for (; i > 0; i--)
|
|
print((char) (buf[i - 1] < 10 ?
|
|
'0' + buf[i - 1] :
|
|
'A' + buf[i - 1] - 10));
|
|
}
|
|
|
|
void LiquidCrystal_Prusa::printFloat(double number, uint8_t digits)
|
|
{
|
|
// Handle negative numbers
|
|
if (number < 0.0)
|
|
{
|
|
print('-');
|
|
number = -number;
|
|
}
|
|
|
|
// Round correctly so that print(1.999, 2) prints as "2.00"
|
|
double rounding = 0.5;
|
|
for (uint8_t i=0; i<digits; ++i)
|
|
rounding /= 10.0;
|
|
|
|
number += rounding;
|
|
|
|
// Extract the integer part of the number and print it
|
|
unsigned long int_part = (unsigned long)number;
|
|
double remainder = number - (double)int_part;
|
|
print(int_part);
|
|
|
|
// Print the decimal point, but only if there are digits beyond
|
|
if (digits > 0)
|
|
print(".");
|
|
|
|
// Extract digits from the remainder one at a time
|
|
while (digits-- > 0)
|
|
{
|
|
remainder *= 10.0;
|
|
int toPrint = int(remainder);
|
|
print(toPrint);
|
|
remainder -= toPrint;
|
|
}
|
|
}
|