Help with SSD1327 OLED display

Hey everyone!

For a project I'm working on I decided I'd like to use Espruino so I flashed it on an ESP8266.
I have a GME128128-02 1.5" OLED display that is powered by a SSD1327 that I'd like to use. For my purposes I don't need any grayscale usage, only monochrome and only I2C is relevant for this specific screen.

There doesn't seem to be a module for this specific screen model, and none of the ones I tried worked so I decided to try and modify the SSD1306 module. I've already looked at some Arduino/C libraries for the SSD1327 driver and had a peek at the datasheet but after some evenings experimenting I have to admit I'm quite stuck. When I flash the current code I have, I get a bunch of vertical lines for a few seconds, before the screen seemingly turns off.

I feel like I'm probably not too far off but perhaps anyone here can immediately spot my mistakes and help me out. Thank you in advance!

My code:

var exports={};

var C = {
 OLED_WIDTH                 : 128,
 OLED_CHAR                  : 0x40,//0x20,//0x40
 OLED_CHUNK                 : 128
};

// commands sent when initialising the display
var initCmds = new Uint8Array([
             0xAE,       // 0 Display off (all pixels off)
             0xA0, 0x53, // 1 Segment remap (com split, com remap, nibble remap, column remap)
             0xA1, 0x00, // 3 Display start line
             0xA2, 0x00, // 5 Display offset
             0xA4,       // 7 Regular display
             0xA8, 0x7F, // 8 Set multiplex ratio: 127
             // greyscale table?
             //0xB8, 0x01, 0x11, // 10 Set greyscale table
             //0x22, 0x32, 0x43, // .. cont
             //0x54, 0x65, 0x76, // .. cont
             0xB3, 0x00, // 19 Front clock divider: 0, Fosc: 0
             0xAB, 0x01, // 21 Enable internal Vdd
             0xB1, 0xF1, // 23 Set phase periods - 1: 1 clk, 2: 15 clks
             0xBC, 0x08, // 25 Pre-charge voltage: Vcomh
             0xBE, 0x07, // 27 COM deselect voltage level: 0.86 x Vcc
             0xD5, 0x62, // 29 Enable 2nd pre-charge
             0xB6, 0x0F, // 31 2nd Pre-charge period: 15 clks
             0xA4, // 33 normal display
             0xAF, // 34 display on 
            ]);

// commands sent when sending data to the display
var flipCmds = [
     0x15,//0x21, // columns
     0, 127, // 
     0x75,//0x22, // rows
     0, 31//127//15 /* (height>>3)-1 */
];

function update(options) {
}

exports.connect = function(i2c, callback, options) {
  update(options);
  var oled = Graphics.createArrayBuffer(128,128,4,{ve­rtical_byte : false});

  var addr = 0x3C;
  if(options) {
    if (options.address) addr = options.address;  
    // reset display if 'rst' is part of options 
    if (options.rst) digitalPulse(options.rst, 0, 10); 
  }
  
  setTimeout(function() {
    // configure the OLED
    initCmds.forEach(function(d) {i2c.writeTo(addr, [0,d]);});
  }, 50);

  // if there is a callback, call it now(ish)
  if (callback !== undefined) setTimeout(callback, 100);

  // write to the screen
  oled.flip = function() { 
    // set how the data is to be sent (whole screen)
    flipCmds.forEach(function(d) {i2c.writeTo(addr, [0,d]);});
    var chunk = new Uint8Array(C.OLED_CHUNK+1);

    chunk[0] = C.OLED_CHAR;
    for (var p=0; p<this.buffer.length; p+=C.OLED_CHUNK) {
      chunk.set(new Uint8Array(this.buffer,p,C.OLED_CHUNK), 1);
      i2c.writeTo(addr, chunk);
    } 
  };
    
  // set contrast, 0..255
  oled.setContrast = function(c) { i2c.writeTo(addr, 0, 0x81, c); };

  // set off
  oled.off = function() { i2c.writeTo(addr, 0, 0xAE); };

  // set on
  oled.on = function() { i2c.writeTo(addr, 0, 0xAF); };

  // return graphics
  return oled;
};


function start(){
  print("this runs");
  g.on();
  g.clear();
  g.setContrast(128);
  g.setColor(1);
  // write some text
  //g.setFontVector(20);
  //g.drawString("Hello world!",0,0);
  g.drawString("Hello world!",32,32);
  g.fillRect(0, 0, 4, 4);
  // write to the screen
  g.flip(); 
}

// I2C
I2C1.setup({scl:D5,sda:D4,bitrate:100000­});
var g = exports.connect(I2C1, start);

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