OLED-Ported version of Arduino LCD Smartie (Powered by u8x8)

OLED_Smartie.ino

// include the library code:
#include <U8x8lib.h>

// initialize the library
U8X8_SSD1306_128X64_NONAME_HW_I2C u8x8(/* reset=*/ U8X8_PIN_NONE);

// these constants will automatically change by constructor
const int numRows = (int)u8x8.getRows();
const int numCols = (int)u8x8.getCols();

// this array will save current cursor position
int curcursorpos[2] = {0, 0};

// this array will save custom charactor
uint8_t customchar[8][8];

void movecursor_x_rel(int x) { // Move cursor relatively on X-axis (negative=left/positive=right)
  curcursorpos[0] = curcursorpos[0] + x;
  u8x8.setCursor(curcursorpos[0], curcursorpos[1]);
  return;
}

void movecursor(int x, int y) {
  curcursorpos[0] = x;
  curcursorpos[1] = y;
  u8x8.setCursor(curcursorpos[0], curcursorpos[1]);
  return;
}

void setup() {
  Serial.begin(9600);
  // set up the OLCD
  u8x8.begin();
  // initalize custom char array
  for (int ix = 0; ix <= 7; ix++) {
    for (int iy = 0; iy <= 7; iy++) {
      customchar[ix][iy] = 0;
    }
  }
  //u8x8.setFlipMode(1);
  u8x8.setFont(u8x8_font_amstrad_cpc_extended_f);
  u8x8.clear();
  u8x8.inverse();
  u8x8.print("**OLED SMARTIE**");
  u8x8.noInverse();
  u8x8.setCursor(5, 1);
  u8x8.print("on Arduino");
  u8x8.setCursor(0, 2);
  u8x8.setCursor(0, 4 /*numRows - 1*/ );
  u8x8.print("Size: ");
  u8x8.print(String(numCols) + "x" + String(numRows));
}

byte serial_getch() {

  int incoming;
  while (Serial.available() == 0) {}
  // read the incoming byte:
  incoming = Serial.read();

  return (byte) (incoming & 0xff);
}

void loop() {

  byte rxbyte;
  byte temp;

  rxbyte = serial_getch();

  if (rxbyte <= 15) {
    if (rxbyte > 7) {
      rxbyte -= 8;
    }
    u8x8.drawTile(curcursorpos[0], curcursorpos[1], 1, customchar[rxbyte]);
  } else {
    if (rxbyte == 254) //Matrix Orbital uses 254 prefix for commands
    {
      switch (serial_getch())
      {
        case 66: //backlight on (at previously set brightness)
          // This feature won't work if device has no support
          u8x8.setContrast(255);
          break;
        case 70: //backlight off
          u8x8.setContrast(0);
          break;
        case 71:  //set cursor position
          temp = (serial_getch() - 17);  //get column byte
          movecursor(temp, serial_getch()-1);
          break;
        case 72:  //cursor home (reset display position)
          movecursor(0, 0);
          break;
        case 74:  //show underline cursor
          // not available on OLED
          break;
        case 75:  //underline cursor off
        case 84:  //block cursor off
          // not available on OLED
          break;
        case 76:  //move cursor left
          movecursor_x_rel(-1);
          break;
        case 77:  //move cursor right
          movecursor_x_rel(1);
          break;
        case 78:
          { //define custom char
            int ix = serial_getch(); // get char address
            for (int iy = 0; iy <= 7; iy++) {
              customchar[ix][iy] = serial_getch();
            }
          }
          break;
        case 83:  //show blinking block cursor
          // not available on OLED
          break;
        case 86:  //GPO OFF
          //implement later
          break;
        case 87:  //GPO ON
          /*temp = serial_getch();
                  if (temp == 1)
                  {
                    GPO1 = GPO_ON;
                  }*/
          break;
        case 88:  //clear display, cursor home
          u8x8.clear();
          movecursor(0, 0);
          break;
        case 152: //set and remember (doesn't save value, though)
        case 153: //set backlight brightness
          //not implemented
          break;

        //these commands ignored (no parameters)
        case 35: //read serial number
        case 36: //read version number
        case 55: //read module type
        case 59: //exit flow-control mode
        case 65: //auto transmit keypresses
        case 96: //auto-repeat mode off (keypad)
        case 67: //auto line-wrap on
        case 68: //auto line-wrap off
        case 81: //auto scroll on
        case 82: //auto scroll off
        case 104: //init horiz bar graph
        case 109: //init med size digits
        case 115: //init narrow vert bar graph
        case 118: //init wide vert bar graph
          break;
        default:
          //all other commands ignored and parameter byte discarded
          temp = serial_getch();  //dump the command code
          break;
      }
      return;
    } //END OF COMMAND HANDLER

    u8x8.print((char)rxbyte);  //otherwise a plain char so we print it to lcd
    return;
  }
}