ESP8266_Nokia_LCD_5110_3310.ino

/*
 * Connecting ESP8266 (ESP-01) and Nokia 5110 LCD
 * www.KendrickTabi.com
 * http://www.kendricktabi.com/2015/08/esp8266-and-nokia-5110-lcd.html
 */

#include <ESP8266WiFi.h>
#include <ArduinoJson.h>

#define PIN_SCE   3 //Pin 3 on LCD
#define PIN_RESET 4 //Pin 4 on LCD
#define PIN_DC    2 //Pin 5 on LCD
#define PIN_SDIN  1 //Pin 6 on LCD
#define PIN_SCLK  0 //Pin 7 on LCD

//The DC pin tells the LCD if we are sending a command or data
#define LCD_COMMAND 0 
#define LCD_DATA  1

//You may find a different size screen, but this one is 84 by 48 pixels
#define LCD_X     84
#define LCD_Y     48

//This table contains the hex values that represent pixels
//for a font that is 5 pixels wide and 8 pixels high
static const byte ASCII[][5] = {
  {0x00, 0x00, 0x00, 0x00, 0x00} // 20  
  ,{0x00, 0x00, 0x5f, 0x00, 0x00} // 21 !
  ,{0x00, 0x07, 0x00, 0x07, 0x00} // 22 "
  ,{0x14, 0x7f, 0x14, 0x7f, 0x14} // 23 #
  ,{0x24, 0x2a, 0x7f, 0x2a, 0x12} // 24 $
  ,{0x23, 0x13, 0x08, 0x64, 0x62} // 25 %
  ,{0x36, 0x49, 0x55, 0x22, 0x50} // 26 &
  ,{0x00, 0x05, 0x03, 0x00, 0x00} // 27 '
  ,{0x00, 0x1c, 0x22, 0x41, 0x00} // 28 (
  ,{0x00, 0x41, 0x22, 0x1c, 0x00} // 29 )
  ,{0x14, 0x08, 0x3e, 0x08, 0x14} // 2a *
  ,{0x08, 0x08, 0x3e, 0x08, 0x08} // 2b +
  ,{0x00, 0x50, 0x30, 0x00, 0x00} // 2c ,
  ,{0x08, 0x08, 0x08, 0x08, 0x08} // 2d -
  ,{0x00, 0x60, 0x60, 0x00, 0x00} // 2e .
  ,{0x20, 0x10, 0x08, 0x04, 0x02} // 2f Slash
  ,{0x3e, 0x51, 0x49, 0x45, 0x3e} // 30 0
  ,{0x00, 0x42, 0x7f, 0x40, 0x00} // 31 1
  ,{0x42, 0x61, 0x51, 0x49, 0x46} // 32 2
  ,{0x21, 0x41, 0x45, 0x4b, 0x31} // 33 3
  ,{0x18, 0x14, 0x12, 0x7f, 0x10} // 34 4
  ,{0x27, 0x45, 0x45, 0x45, 0x39} // 35 5
  ,{0x3c, 0x4a, 0x49, 0x49, 0x30} // 36 6
  ,{0x01, 0x71, 0x09, 0x05, 0x03} // 37 7
  ,{0x36, 0x49, 0x49, 0x49, 0x36} // 38 8
  ,{0x06, 0x49, 0x49, 0x29, 0x1e} // 39 9
  ,{0x00, 0x36, 0x36, 0x00, 0x00} // 3a :
  ,{0x00, 0x56, 0x36, 0x00, 0x00} // 3b ;
  ,{0x08, 0x14, 0x22, 0x41, 0x00} // 3c <
  ,{0x14, 0x14, 0x14, 0x14, 0x14} // 3d =
  ,{0x00, 0x41, 0x22, 0x14, 0x08} // 3e >
  ,{0x02, 0x01, 0x51, 0x09, 0x06} // 3f ?
  ,{0x32, 0x49, 0x79, 0x41, 0x3e} // 40 @
  ,{0x7e, 0x11, 0x11, 0x11, 0x7e} // 41 A
  ,{0x7f, 0x49, 0x49, 0x49, 0x36} // 42 B
  ,{0x3e, 0x41, 0x41, 0x41, 0x22} // 43 C
  ,{0x7f, 0x41, 0x41, 0x22, 0x1c} // 44 D
  ,{0x7f, 0x49, 0x49, 0x49, 0x41} // 45 E
  ,{0x7f, 0x09, 0x09, 0x09, 0x01} // 46 F
  ,{0x3e, 0x41, 0x49, 0x49, 0x7a} // 47 G
  ,{0x7f, 0x08, 0x08, 0x08, 0x7f} // 48 H
  ,{0x00, 0x41, 0x7f, 0x41, 0x00} // 49 I
  ,{0x20, 0x40, 0x41, 0x3f, 0x01} // 4a J
  ,{0x7f, 0x08, 0x14, 0x22, 0x41} // 4b K
  ,{0x7f, 0x40, 0x40, 0x40, 0x40} // 4c L
  ,{0x7f, 0x02, 0x0c, 0x02, 0x7f} // 4d M
  ,{0x7f, 0x04, 0x08, 0x10, 0x7f} // 4e N
  ,{0x3e, 0x41, 0x41, 0x41, 0x3e} // 4f O
  ,{0x7f, 0x09, 0x09, 0x09, 0x06} // 50 P
  ,{0x3e, 0x41, 0x51, 0x21, 0x5e} // 51 Q
  ,{0x7f, 0x09, 0x19, 0x29, 0x46} // 52 R
  ,{0x46, 0x49, 0x49, 0x49, 0x31} // 53 S
  ,{0x01, 0x01, 0x7f, 0x01, 0x01} // 54 T
  ,{0x3f, 0x40, 0x40, 0x40, 0x3f} // 55 U
  ,{0x1f, 0x20, 0x40, 0x20, 0x1f} // 56 V
  ,{0x3f, 0x40, 0x38, 0x40, 0x3f} // 57 W
  ,{0x63, 0x14, 0x08, 0x14, 0x63} // 58 X
  ,{0x07, 0x08, 0x70, 0x08, 0x07} // 59 Y
  ,{0x61, 0x51, 0x49, 0x45, 0x43} // 5a Z
  ,{0x00, 0x7f, 0x41, 0x41, 0x00} // 5b [
  ,{0x02, 0x04, 0x08, 0x10, 0x20} // 5c Backslash
  ,{0x00, 0x41, 0x41, 0x7f, 0x00} // 5d ]
  ,{0x04, 0x02, 0x01, 0x02, 0x04} // 5e ^
  ,{0x40, 0x40, 0x40, 0x40, 0x40} // 5f _
  ,{0x00, 0x01, 0x02, 0x04, 0x00} // 60 `
  ,{0x20, 0x54, 0x54, 0x54, 0x78} // 61 a
  ,{0x7f, 0x48, 0x44, 0x44, 0x38} // 62 b
  ,{0x38, 0x44, 0x44, 0x44, 0x20} // 63 c
  ,{0x38, 0x44, 0x44, 0x48, 0x7f} // 64 d
  ,{0x38, 0x54, 0x54, 0x54, 0x18} // 65 e
  ,{0x08, 0x7e, 0x09, 0x01, 0x02} // 66 f
  ,{0x0c, 0x52, 0x52, 0x52, 0x3e} // 67 g
  ,{0x7f, 0x08, 0x04, 0x04, 0x78} // 68 h
  ,{0x00, 0x44, 0x7d, 0x40, 0x00} // 69 i
  ,{0x20, 0x40, 0x44, 0x3d, 0x00} // 6a j 
  ,{0x7f, 0x10, 0x28, 0x44, 0x00} // 6b k
  ,{0x00, 0x41, 0x7f, 0x40, 0x00} // 6c l
  ,{0x7c, 0x04, 0x18, 0x04, 0x78} // 6d m
  ,{0x7c, 0x08, 0x04, 0x04, 0x78} // 6e n
  ,{0x38, 0x44, 0x44, 0x44, 0x38} // 6f o
  ,{0x7c, 0x14, 0x14, 0x14, 0x08} // 70 p
  ,{0x08, 0x14, 0x14, 0x18, 0x7c} // 71 q
  ,{0x7c, 0x08, 0x04, 0x04, 0x08} // 72 r
  ,{0x48, 0x54, 0x54, 0x54, 0x20} // 73 s
  ,{0x04, 0x3f, 0x44, 0x40, 0x20} // 74 t
  ,{0x3c, 0x40, 0x40, 0x20, 0x7c} // 75 u
  ,{0x1c, 0x20, 0x40, 0x20, 0x1c} // 76 v
  ,{0x3c, 0x40, 0x30, 0x40, 0x3c} // 77 w
  ,{0x44, 0x28, 0x10, 0x28, 0x44} // 78 x
  ,{0x0c, 0x50, 0x50, 0x50, 0x3c} // 79 y
  ,{0x44, 0x64, 0x54, 0x4c, 0x44} // 7a z
  ,{0x00, 0x08, 0x36, 0x41, 0x00} // 7b {
  ,{0x00, 0x00, 0x7f, 0x00, 0x00} // 7c |
  ,{0x00, 0x41, 0x36, 0x08, 0x00} // 7d }
  ,{0x10, 0x08, 0x08, 0x10, 0x08} // 7e ~
  ,{0x78, 0x46, 0x41, 0x46, 0x78} // 7f DEL
};

// Hex values that represent Bitcoin logo
char bitcoin[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0x60, 0x70,
0x18, 0x18, 0x18, 0x0C, 0x0C, 0x06, 0x06, 0x06, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x06, 0x06,
0x06, 0x0C, 0x0C, 0x18, 0x18, 0x18, 0x70, 0x60, 0xE0, 0xC0, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xE0, 0x38, 0x1E, 0x07, 0x03,
0x01, 0x80, 0xC0, 0xF0, 0xF8, 0xF8, 0x3E, 0x3E, 0x3E, 0x3F, 0x3F, 0x03, 0x03, 0x03, 0x3F, 0x03,
0x03, 0x03, 0x3F, 0x3F, 0x7F, 0x7E, 0xFE, 0xFE, 0xF8, 0xF8, 0xF0, 0xC0, 0x80, 0x01, 0x03, 0x07,
0x1E, 0x38, 0xE0, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xFC, 0x1F, 0x03,
0x00, 0x00, 0x00, 0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFE, 0xFE, 0x00, 0x00, 0x00,
0x00, 0x00, 0x3E, 0x3E, 0x3E, 0x3E, 0x1C, 0x00, 0x00, 0x00, 0x40, 0xE1, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x03, 0x1F, 0xFC, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x03, 0x3F, 0xFC, 0xC0, 0x00, 0x00, 0x00, 0x07, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x3F,
0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x3F, 0x3F, 0x3F, 0x3E, 0x1E, 0x00, 0x00, 0x00, 0x00,
0xC1, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x07, 0x00, 0x00, 0x00, 0xC0, 0xFC, 0x3F, 0x03, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03, 0x1E, 0x3C, 0x60, 0xE0, 0x80, 0x80, 0x03, 0x07,
0x0F, 0x1F, 0x3E, 0x3E, 0x7E, 0x7E, 0x7E, 0x60, 0xE0, 0xE0, 0xFE, 0xE0, 0xE0, 0xE0, 0x7E, 0x7E,
0x7E, 0x7F, 0x3F, 0x3F, 0x1F, 0x0F, 0x07, 0x03, 0x80, 0x80, 0xE0, 0x60, 0x3C, 0x1E, 0x03, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x03, 0x06, 0x06, 0x0C, 0x0C, 0x18, 0x18, 0x18, 0x30, 0x30, 0x30, 0x20, 0x60, 0x60, 0x60,
0x60, 0x20, 0x30, 0x30, 0x30, 0x18, 0x18, 0x18, 0x0C, 0x0C, 0x06, 0x06, 0x03, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
};

const char* ssid     = "yourSSID";     // insert your SSID
const char* password = "yourPassword"; // insert your password

const char* host = "api.coindesk.com";
String url = "/v1/bpi/currentprice/PHP.json";

String valueUSD;
String valuePHP;

void setup() {
  LCDInit(); //Init the LCD
  
  LCDClear();
  LCDBitmap(bitcoin); // display Bitcoin Logo
  delay(3000);

  LCDClear();
  gotoXY(0, 4);
  LCDString("kendricktabi.com");
  delay(3000);

  LCDClear();
  gotoXY(0, 0);
  LCDString(" {Bitcoin!} ");
  gotoXY(0, 2);
  LCDString("Connecting  ");
  LCDString("to WiFi");
  
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    LCDString(".");
  }
  
  LCDClear();
  gotoXY(0, 2);
  LCDString("    WiFi    "); 
  LCDString(" Connected! "); 
  delay(1000);
  LCDClear();
}

void loop() {
  gotoXY(0, 5);
  LCDString("Please wait.");
  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) {
    return;
  }
  
  // This will send the request to the server
  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" + 
               "Connection: close\r\n\r\n");
  delay(10);

  unsigned int i = 0; //timeout counter
  int n = 1; // char counter
  char json[500] ="{";
  while (!client.find("\"USD\":{")){} 
  while (i<600) {
    if(client.available()) {
      char c = client.read();
      json[n]=c;
      if(c=='}') break;
      n++;
      i=0;
    }
    i++;
  }

  StaticJsonBuffer<500> jsonBuffer;
  JsonObject& root = jsonBuffer.parseObject(json);

  if (!root.success()) {
    return;
  }

  LCDClear();
  gotoXY(0, 0);
  LCDString("{BTC PRICES}");
  gotoXY(0, 2);
  LCDString("$= ");
  
  valueUSD = root["rate"];  

  char charUSD[50];
  valueUSD.toCharArray(charUSD, 50);

  LCDString(charUSD);
  
  i = 0; //timeout counter
  n = 1; // char counter
  char json2[500] ="{";
  while (!client.find("\"PHP\":{")){}
  while (i<600) {
    if(client.available()) {
      char c = client.read();
      json2[n]=c;
      if(c=='}') break;
      n++;
      i=0;
    }
    i++;
  }

  StaticJsonBuffer<500> jsonBuffer2;
  JsonObject& root2 = jsonBuffer2.parseObject(json2);
  
  if (!root2.success()) {
    return;
  }

  valuePHP = root2["rate"];  

  char charPHP[50];
  valuePHP.toCharArray(charPHP, 50);

  gotoXY(0, 3);
  LCDString("P= ");
  LCDString(charPHP);
  gotoXY(0, 4);
  LCDString("            "); // clear this line

  gotoXY(0, 5);
  LCDString("Updated!    ");

  delay(1000);
  gotoXY(0, 5);
  LCDString("            ");

  gotoXY(0, 5);
  for (int x=0; x <= 11; x++){
      LCDString(".");
      delay(1000);
   }

  gotoXY(0, 5);
  for (int x=0; x <= 11; x++){
      LCDString(" ");
      delay(1000);
  }

  valueUSD ="";
  valuePHP ="";
}

void gotoXY(int x, int y) {
  LCDWrite(0, 0x80 | x);  // Column  x - range: 0 to 84
  LCDWrite(0, 0x40 | y);  // Row     y - range: 0 to 5
}

//This takes a large array of bits and sends them to the LCD
void LCDBitmap(char my_array[]){
  for (int index = 0 ; index < (LCD_X * LCD_Y / 8) ; index++)
    LCDWrite(LCD_DATA, my_array[index]);
}

//This function takes in a character, looks it up in the font table/array
//And writes it to the screen
//Each character is 8 bits tall and 5 bits wide. We pad one blank column of
//pixels on each side of the character for readability.
void LCDCharacter(char character) {
  LCDWrite(LCD_DATA, 0x00); //Blank vertical line padding

  for (int index = 0 ; index < 5 ; index++)
    LCDWrite(LCD_DATA, ASCII[character - 0x20][index]);
    //0x20 is the ASCII character for Space (' '). The font table starts with this character

  LCDWrite(LCD_DATA, 0x00); //Blank vertical line padding
}

//Given a string of characters, one by one is passed to the LCD
void LCDString(char *characters) {
  while (*characters)
    LCDCharacter(*characters++);
}

//Clears the LCD by writing zeros to the entire screen
void LCDClear(void) {
  for (int index = 0 ; index < (LCD_X * LCD_Y / 8) ; index++)
    LCDWrite(LCD_DATA, 0x00);
    
  gotoXY(0, 0); //After we clear the display, return to the home position
}

//This sends the magical commands to the PCD8544
void LCDInit(void) {

  //Configure control pins
  pinMode(PIN_SCE, OUTPUT);
  pinMode(PIN_RESET, OUTPUT);
  pinMode(PIN_DC, OUTPUT);
  pinMode(PIN_SDIN, OUTPUT);
  pinMode(PIN_SCLK, OUTPUT);

  //Reset the LCD to a known state
  digitalWrite(PIN_RESET, LOW);
  digitalWrite(PIN_RESET, HIGH);

  LCDWrite(LCD_COMMAND, 0x21); //Tell LCD that extended commands follow
  LCDWrite(LCD_COMMAND, 0xB0); //Set LCD Vop (Contrast): Try 0xB1(good @ 3.3V) or 0xBF if your display is too dark
  LCDWrite(LCD_COMMAND, 0x04); //Set Temp coefficent
  LCDWrite(LCD_COMMAND, 0x14); //LCD bias mode 1:48: Try 0x13 or 0x14

  LCDWrite(LCD_COMMAND, 0x20); //We must send 0x20 before modifying the display control mode
  LCDWrite(LCD_COMMAND, 0x0C); //Set display control, normal mode. 0x0D for inverse
}

//There are two memory banks in the LCD, data/RAM and commands. This 
//function sets the DC pin high or low depending, and then sends
//the data byte
void LCDWrite(byte data_or_command, byte data) {
  digitalWrite(PIN_DC, data_or_command); //Tell the LCD that we are writing either to data or a command

  //Send the data
  digitalWrite(PIN_SCE, LOW);
  shiftOut(PIN_SDIN, PIN_SCLK, MSBFIRST, data);
  digitalWrite(PIN_SCE, HIGH);
}