// ESP8266 with 16x2 i2c LCD

// Compatible with the Arduino IDE 1.6.6

// Library https://github.com/agnunez/ESP8266-I2C-LCD1602

// Original Library https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library

// Modified for ESP8266 with GPIO0-SDA GPIO2-SCL and LCD1206 display

// edit library and change Wire.begin() by Wire.begin(sda,scl) or other GPIO's used for I2C

// and access from lcd.begin(sda,scl)

/**

* Displays text sent over the serial port (e.g. from the Serial Monitor) on

* an attached LCD.

*/

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

// Set the LCD address to 0x27 for a 16 chars and 2 line display

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup()

{

lcd.begin(0,2);

lcd.backlight();

// Initialize the serial port at a speed of 9600 baud

Serial.begin(9600);

}

void loop()

// ESP8266 with 16x2 i2c LCD

{

// Compatible with the Arduino IDE 1.6.6

// If characters arrived over the serial port...

// Library https://github.com/agnunez/ESP8266-I2C-LCD1602

if (Serial.available()) {

// Original Library https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library

// Wait a bit for the entire message to arrive

// Modified for ESP8266 with GPIO0-SDA GPIO2-SCL and LCD1206 display

delay(100);

// edit library and change Wire.begin() by Wire.begin(sda,scl) or other GPIO's used for I2C

// Clear the screen

// and access from lcd.begin(sda,scl)

lcd.clear();

#include <Wire.h>

// Write all characters received with the serial port to the LCD.

#include <LiquidCrystal_I2C.h>

while (Serial.available() > 0) {

lcd.write(Serial.read());

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};

// Set the LCD address to 0x27 for a 16 chars and 2 line display

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup()

{

lcd.begin(0,2);

lcd.backlight();

lcd.createChar(0, bell);

// ESP8266 with 16x2 i2c LCD

lcd.createChar(1, note);

// Compatible with the Arduino IDE 1.6.6

lcd.createChar(2, clock);

// Library https://github.com/agnunez/ESP8266-I2C-LCD1602

lcd.createChar(3, heart);

// Original Library https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library

lcd.createChar(4, duck);

// Modified for ESP8266 with GPIO0-SDA GPIO2-SCL and LCD1206 display

lcd.createChar(5, check);

// edit library and change Wire.begin() by Wire.begin(sda,scl) or other GPIO's used for I2C

lcd.createChar(6, cross);

// and access from lcd.begin(sda,scl)

lcd.createChar(7, retarrow);

lcd.home();

#include <LiquidCrystal_I2C.h>

#include <Wire.h>

lcd.print("Hello world...");

lcd.setCursor(0, 1);

LiquidCrystal_I2C lcd(0x27,16,2); // Check I2C address of LCD, normally 0x27 or 0x3F

lcd.print(" i ");

lcd.write(3);

uint8_t heart[8] = {0x0,0xa,0x1f,0x1f,0xe,0x4,0x0}; // example sprite bitmap

lcd.print(" arduinos!");

delay(5000);

void setup() {

displayKeyCodes();

lcd.begin(0,2); // In ESP8266-01, SDA=0, SCL=2

}

lcd.backlight();

lcd.createChar(1, heart);

// display all keycodes

}

void displayKeyCodes(void) {

uint8_t i = 0;

void loop() {

lcd.home(); // At column=0, row=0

while (1) {

lcd.print("ESP8266");

lcd.clear();

lcd.setCursor(0, 1);

lcd.print("Codes 0x");

lcd.print("LiquidCrystalI2C");

lcd.print(i, HEX);

delay(500);

lcd.print("-0x");

lcd.setCursor(10, 0); // At column=10, row=0

lcd.print(i + 16, HEX);

lcd.write(byte(1));

lcd.setCursor(0, 1);

delay(500);

lcd.setCursor(10, 0); // At column=10, row=0

for (int j = 0; j < 16; j++) {

lcd.print(" "); // Wipe sprite

lcd.write(i + j);

}

}

i += 16;

delay(4000);

}

}

void loop()

{

// Do nothing here...

}