No lcd example (duplicate)

[drp0]

For those that need it, here is a keyboard lcd example, tested on a mega with a standard 16x2 LCD and Keypad shield: It includes custom characters for un-supported lcd keys.

`` /* PS2Keyboard library example

ps2Keyboard1

NB may need to plug usb in after starting the Arduino

Lcd support added 18/2/2018 D.R.Patterson lcd character set: http://forum.arduino.cc/index.php?topic=19002.0

Tested on a mega with a Keypad Shield for Arduino

PS2Keyboard now requries both pins specified for begin() keyboard.begin(data_pin, irq_pin);

Valid irq pins: Arduino Uno: 2, 3 Arduino Due: All pins, except 13 (LED) Arduino Mega: 2, 3, 18, 19, 20, 21 Teensy 2.0: All pins, except 13 (LED) Teensy 2.0: 5, 6, 7, 8 Teensy 1.0: 0, 1, 2, 3, 4, 6, 7, 16 Teensy++ 2.0: 0, 1, 2, 3, 18, 19, 36, 37 Teensy++ 1.0: 0, 1, 2, 3, 18, 19, 36, 37 Sanguino: 2, 10, 11

for more information you can read the original wiki in arduino.cc at http://www.arduino.cc/playground/Main/PS2Keyboard or http://www.pjrc.com/teensy/td_libs_PS2Keyboard.html

Like the Original library and example this is under LGPL license.

Modified by Cuninganreset@gmail.com on 2010-03-22 Modified by Paul Stoffregen paul@pjrc.com June 2010 */

include

const int DataPin = 19; const int IRQpin = 18; PS2Keyboard keyboard;

include

// LCD Keypad Shield for Arduino // http://www.hobbytronics.co.uk/lcd/lcd-displays-5v/arduino-lcd-keypad-shield

//set constants for number of rows and columns to match your LCD const int numRows = 2; const int numCols = 16; // initialize the library with the numbers of the interface pins LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

byte x, y; // track lcd position

// custom pound using https://omerk.github.io/lcdchargen/ byte customPound[8] = { 0b01100, 0b10010, 0b01000, 0b11100, 0b01000, 0b01000, 0b11110, 0b00000 }; const char pound = 1;

byte customkey[8] = { // ¬ 0b00000, 0b00000, 0b00000, 0b00000, 0b11111, 0b00001, 0b00001, 0b00000 }; const char custom = 2;

byte customslash[8] = { // backslash 0b00000, 0b00000, 0b10000, 0b01000, 0b00100, 0b00010, 0b00001, 0b00000 }; const char backslash = 3;

char c;

// currently un-used:

define is_printable(c) (!(c&0x80)) // don't print if top bit is set

void setup() { delay(1000); keyboard.begin(DataPin, IRQpin); Serial.begin(115200); while (!Serial) yield(); lcd.begin(numRows, numCols); delay(250); lcd.clear(); // create a new custom character lcd.createChar(pound, customPound); lcd.createChar(custom, customkey); lcd.createChar(backslash, customslash); lcd.cursor(); // Enable Cursor //lcd.blink(); // Blinking cursor lcd.clear();

lcd.print(F("Keyboard Test:")); lcd.setCursor(0,1); lcd.print(F("Esc to clear LCD")); Serial.println(F("Keyboard Test:")); unsigned long t = millis(); do{ if (keyboard.available()) { c = keyboard.read(); if (c == PS2_ESC) break; } } while ((millis() - t) < 8000); lcd.clear(); }

void loop() {

if (keyboard.available()) { // read the next key c = keyboard.read();

// check for some of the special keys
if (c == PS2_ENTER) {
Serial.println();
x = 0;
y += 1;
  if (y == numRows){
  y = 0;
  lcd.clear();
  }
lcd.setCursor(x, y);

} else if (c == PS2_TAB) {
lcdprint(F("[Tab]"));

} else if (c == PS2_ESC) {
Serial.println(F("\n[ESC]\n"));
lcd.clear();
x = 0; y = 0;
lcd.setCursor(x, y);

} else if (c == PS2_PAGEDOWN) {
lcdprint(F("[PgDn]"));

} else if (c == PS2_PAGEUP) {
lcdprint(F("[PgUp]"));

} else if (c == PS2_LEFTARROW) {
lcdprint(F("[Left]"));

} else if (c == PS2_RIGHTARROW) {
lcdprint(F("[Right]"));

} else if (c == PS2_UPARROW) {
lcdprint(F("[Up]"));

} else if (c == PS2_DOWNARROW) {
lcdprint(F("[Down]"));

} else if (c == PS2_DELETE) {
lcdprint(F("[Del]"));;

} else if (c == PS2_BACKSPACE) {
lcdprint(F("[Back]"));

} else {  
// otherwise, just print all normal characters
lcdprintChar(c);
}

} }

void lcdprintChar(char t){ // display char on lcd and Serial byte test = byte(t); if (test == 194) return; // this char appears as an indicator of special keys

if (x > (numCols - 1) ) { x = 0; if (y == (numRows - 1)) { lcd.clear(); Serial.println(); y = 0; }else y += 1; Serial.println(); lcd.setCursor(x, y); }

if (test == 126) lcd.write(243); // 126 ~ else if (test == 163) lcd.write(pound); // 163 £ else if (test == 172) lcd.write(custom); // 194 172 ¬ else if (test == 92) lcd.write(backslash); // 92 backslash else lcd.print(t); Serial.print(t); x += 1; }

void lcdprint(String t){ // display string on lcd and Serial byte L = t.length(); if (x > (numCols - L) ) { x = 0; if (y == (numRows - 1)) { lcd.clear(); Serial.println(); y = 0; }else y += 1; Serial.println(); lcd.setCursor(x, y); } lcd.print(t); Serial.print(t); x += L; }