diff --git a/midi2cv/drivers/display.cc b/midi2cv/drivers/display.cc
index 641e876..01c2e25 100644
--- a/midi2cv/drivers/display.cc
+++ b/midi2cv/drivers/display.cc
@@ -2,65 +2,19 @@
 #include "gpio.h"
 #include "spi_mode.h"
 #include "stmlib/system/system_clock.h"
-#include "stmlib/utils/random.h"
+#include <U8g2lib.h>
 #include <stm32f37x_conf.h>
 #include <u8g2.h>
 
 using namespace stmlib;
 
-const uint16_t kPinEnable = GPIO_Pin_2;
-const uint16_t kPinReset = GPIO_Pin_0;
-const uint16_t kPinDataCommand = GPIO_Pin_9;
+static const uint16_t kPinEnable = GPIO_Pin_2;
+static const uint16_t kPinReset = GPIO_Pin_0;
+static const uint16_t kPinDataCommand = GPIO_Pin_9;
 
-u8g2_t u8g2_;
-uint8_t* default_buf;
-uint8_t second_buf[1024];
-uint8_t* output_buf;
-
-u8g2_t* Display::u8g2()
-{
-  return &u8g2_;
-}
-
-void Display::Init()
-{
-  // init SS/CS/RST GPIO
-  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
-
-  GPIO_InitTypeDef gpio_init;
-  gpio_init.GPIO_Mode = GPIO_Mode_OUT;
-  gpio_init.GPIO_OType = GPIO_OType_PP;
-  gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
-  gpio_init.GPIO_PuPd = GPIO_PuPd_NOPULL;
-  gpio_init.GPIO_Pin = kPinEnable | kPinReset | kPinDataCommand;
-  GPIO_Init(GPIOB, &gpio_init);
-
-  GPIO_WriteBit(GPIOB, kPinEnable, Bit_SET);
-
-  // init AF GPIO
-  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
-
-  gpio_init.GPIO_Mode = GPIO_Mode_AF;
-  gpio_init.GPIO_OType = GPIO_OType_PP;
-  gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
-  gpio_init.GPIO_PuPd = GPIO_PuPd_NOPULL;
-  gpio_init.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_14 | GPIO_Pin_15;
-  GPIO_Init(GPIOB, &gpio_init);
-  GPIO_PinAFConfig(GPIOB, GPIO_PinSource8, GPIO_AF_5);
-  GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_5);
-  GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_5);
-
-  // init SPI
-  RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
-  SPI_I2S_DeInit(SPI2);
-  // Initialize SPI
-  InitSPI(SPI_MODE_DISPLAY);
-  GPIO_WriteBit(GPIOB, kPinReset, Bit_RESET);
-  asm("nop");
-
-  GPIO_WriteBit(GPIOB, kPinReset, Bit_SET);
-  InitGLib();
-}
+static uint8_t* default_buf;
+static uint8_t second_buf[1024];
+static uint8_t* output_buf;
 
 uint8_t u8x8_stm32_gpio_and_delay(U8X8_UNUSED u8x8_t* u8x8,
     U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int,
@@ -105,30 +59,84 @@ uint8_t u8x8_byte_4wire_hw_spi(u8x8_t* u8x8, uint8_t msg, uint8_t arg_int,
   return 1;
 }
 
+class U8G2_SH1106_128x64_NONAME_F_SPI : public U8G2 {
+  public:
+  U8G2_SH1106_128x64_NONAME_F_SPI()
+      : U8G2()
+  {
+    u8g2_Setup_sh1106_128x64_noname_f(&this->u8g2, U8G2_R0, u8x8_byte_4wire_hw_spi, u8x8_stm32_gpio_and_delay);
+    output_buf = default_buf = this->u8g2.tile_buf_ptr;
+    /*u8g2_InitDisplay(&u8g2_);
+  u8g2_SetContrast(&u8g2_, 255);
+  u8g2_SetPowerSave(&u8g2_, 0);*/
+  }
+};
+
+U8G2_SH1106_128x64_NONAME_F_SPI u8g2_;
+
+U8G2* Display::u8g2()
+{
+  return &u8g2_;
+}
+
+void Display::Init()
+{
+  // init SS/CS/RST GPIO
+  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
+
+  GPIO_InitTypeDef gpio_init;
+  gpio_init.GPIO_Mode = GPIO_Mode_OUT;
+  gpio_init.GPIO_OType = GPIO_OType_PP;
+  gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
+  gpio_init.GPIO_PuPd = GPIO_PuPd_NOPULL;
+  gpio_init.GPIO_Pin = kPinEnable | kPinReset | kPinDataCommand;
+  GPIO_Init(GPIOB, &gpio_init);
+
+  GPIO_WriteBit(GPIOB, kPinEnable, Bit_SET);
+
+  // init AF GPIO
+  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
+
+  gpio_init.GPIO_Mode = GPIO_Mode_AF;
+  gpio_init.GPIO_OType = GPIO_OType_PP;
+  gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
+  gpio_init.GPIO_PuPd = GPIO_PuPd_NOPULL;
+  gpio_init.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_14 | GPIO_Pin_15;
+  GPIO_Init(GPIOB, &gpio_init);
+  GPIO_PinAFConfig(GPIOB, GPIO_PinSource8, GPIO_AF_5);
+  GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_5);
+  GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_5);
+
+  // init SPI
+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
+  SPI_I2S_DeInit(SPI2);
+  // Initialize SPI
+  InitSPI(SPI_MODE_DISPLAY);
+  GPIO_WriteBit(GPIOB, kPinReset, Bit_RESET);
+  asm("nop");
+
+  GPIO_WriteBit(GPIOB, kPinReset, Bit_SET);
+  InitGLib();
+}
+
 void Display::InitGLib()
 {
-  u8g2_Setup_sh1106_128x64_noname_f(&u8g2_, U8G2_R0, u8x8_byte_4wire_hw_spi, u8x8_stm32_gpio_and_delay);
-  output_buf = default_buf = u8g2_.tile_buf_ptr;
-  u8g2_InitDisplay(&u8g2_);
-  u8g2_SetContrast(&u8g2_, 255);
-  u8g2_SetPowerSave(&u8g2_, 0);
-
-  Random::Seed(42);
+  u8g2_.begin();
 }
 
 void Display::Flush()
 {
-  uint8_t* cache = u8g2_.tile_buf_ptr;
-  u8g2_.tile_buf_ptr = output_buf;
-  u8g2_SendBuffer(&u8g2_);
-  u8g2_.tile_buf_ptr = cache;
+  uint8_t* cache = u8g2_.getU8g2()->tile_buf_ptr;
+  u8g2_.getU8g2()->tile_buf_ptr = output_buf;
+  u8g2_.sendBuffer();
+  u8g2_.getU8g2()->tile_buf_ptr = cache;
 }
 
 void Display::Swap()
 {
-  output_buf = u8g2_.tile_buf_ptr;
+  output_buf = u8g2_.getU8g2()->tile_buf_ptr;
   if (output_buf == default_buf)
-    u8g2_.tile_buf_ptr = second_buf;
+    u8g2_.getU8g2()->tile_buf_ptr = second_buf;
   else
-    u8g2_.tile_buf_ptr = default_buf;
+    u8g2_.getU8g2()->tile_buf_ptr = default_buf;
 }
diff --git a/midi2cv/drivers/display.h b/midi2cv/drivers/display.h
index e19f419..30694d4 100644
--- a/midi2cv/drivers/display.h
+++ b/midi2cv/drivers/display.h
@@ -3,7 +3,7 @@
 
 #include "stmlib/stmlib.h"
 #include <stm32f37x_conf.h>
-#include <u8g2.h>
+#include <U8g2lib.h>
 
 #define DISPLAY_WIDTH 128
 #define DISPLAY_HEIGHT 64
@@ -14,7 +14,7 @@ public:
     ~Display() {}
 
     void Init();
-    u8g2_t* u8g2();
+    U8G2* u8g2();
     void Flush();
     void Swap();
 
diff --git a/midi2cv/menu/menu.cc b/midi2cv/menu/menu.cc
index ff812f4..62b14e1 100644
--- a/midi2cv/menu/menu.cc
+++ b/midi2cv/menu/menu.cc
@@ -4,7 +4,7 @@
 
 const int kMenuItemHeight = 12;
 
-void Menu::render(u8g2_t* u8g2_, uint8_t xStart, uint8_t yStart, uint8_t width, uint8_t height)
+void Menu::render(U8G2* u8g2_, uint8_t xStart, uint8_t yStart, uint8_t width, uint8_t height)
 {
   this->width = width;
   this->height = height;
@@ -12,7 +12,7 @@ void Menu::render(u8g2_t* u8g2_, uint8_t xStart, uint8_t yStart, uint8_t width,
   uint8_t maxVisibleItems = height / kMenuItemHeight;
 
   uint8_t itemsToRender = std::min(maxVisibleItems, uint8_t(this->itemCount - currentScrollStart));
-  u8g2_SetFont(u8g2_, u8g2_font_6x10_tf);
+  u8g2_->setFont(u8g2_font_6x10_tf);
   for (uint8_t i = 0; i < itemsToRender; i++) {
     bool selected = this->selectedItem == (i + this->currentScrollStart);
     bool editing = this->currentEditingItem == (i + this->currentScrollStart);
@@ -20,19 +20,19 @@ void Menu::render(u8g2_t* u8g2_, uint8_t xStart, uint8_t yStart, uint8_t width,
 
     AbstractMenuItem* item = this->items[i + this->currentScrollStart];
 
-    u8g2_SetDrawColor(u8g2_, selected ? 1 : 0);
+    u8g2_->setDrawColor(selected ? 1 : 0);
 
     if (editing) {
-      u8g2_DrawFrame(u8g2_, xStart, yPosition, width, kMenuItemHeight);
+      u8g2_->drawFrame(xStart, yPosition, width, kMenuItemHeight);
     } else if (selected) {
-      u8g2_DrawBox(u8g2_, xStart, yPosition, width, kMenuItemHeight);
+      u8g2_->drawBox(xStart, yPosition, width, kMenuItemHeight);
     }
 
-    u8g2_SetDrawColor(u8g2_, editing || !selected ? 1 : 0);
-    u8g2_DrawStr(u8g2_, xStart + 2, yPosition + kMenuItemHeight - 3, item->get_label());
+    u8g2_->setDrawColor(editing || !selected ? 1 : 0);
+    u8g2_->drawStr(xStart + 2, yPosition + kMenuItemHeight - 3, item->get_label());
 
-    uint8_t valueStringWidth = u8g2_GetStrWidth(u8g2_, item->get_string_representation());
-    u8g2_DrawStr(u8g2_, xStart + width - valueStringWidth - 2, yPosition + kMenuItemHeight - 3, item->get_string_representation());
+    uint8_t valueStringWidth = u8g2_->getStrWidth(item->get_string_representation());
+    u8g2_->drawStr(xStart + width - valueStringWidth - 2, yPosition + kMenuItemHeight - 3, item->get_string_representation());
   }
 }
 
diff --git a/midi2cv/menu/menu.h b/midi2cv/menu/menu.h
index 6f0738c..fd18be6 100644
--- a/midi2cv/menu/menu.h
+++ b/midi2cv/menu/menu.h
@@ -2,7 +2,7 @@
 
 #include "menu_items.h"
 
-#include <u8g2.h>
+#include <U8g2lib.h>
 
 #define MAXIMUM_MENU_ITEM_COUNT 16
 
@@ -25,7 +25,7 @@ class Menu {
 
   void up();
   void down();
-  bool back(); // returns true true if nothing happened here and the action can be delegated to up
+  bool back();  // returns true true if nothing happened here and the action can be delegated to up
   bool enter(); // returns true if it wants to give up control
 
   void add_item(AbstractMenuItem* item)
@@ -35,5 +35,5 @@ class Menu {
     }
   }
 
-  void render(u8g2_t* u8g2_, uint8_t x, uint8_t y, uint8_t width, uint8_t height);
+  void render(U8G2* u8g2_, uint8_t x, uint8_t y, uint8_t width, uint8_t height);
 };
diff --git a/midi2cv/ui.cc b/midi2cv/ui.cc
index afc3c32..7ef8675 100644
--- a/midi2cv/ui.cc
+++ b/midi2cv/ui.cc
@@ -49,7 +49,7 @@ void UI::Poll()
 
 void UI::Draw()
 {
-  u8g2_ClearBuffer(display.u8g2());
+  display.u8g2()->clearBuffer();
 
   mainMenu.render(display.u8g2(), 0, 0, DISPLAY_WIDTH, DISPLAY_HEIGHT);
 
diff --git a/midi2cv/ui/main_menu.cc b/midi2cv/ui/main_menu.cc
index 0aa0dd4..52eb9bf 100644
--- a/midi2cv/ui/main_menu.cc
+++ b/midi2cv/ui/main_menu.cc
@@ -43,30 +43,30 @@ void MainMenu::down()
   }
 }
 
-void MainMenu::render(u8g2_t* u8g2, int x, int y, int width, int height)
+void MainMenu::render(U8G2* u8g2, int x, int y, int width, int height)
 {
-  u8g2_SetFont(u8g2, /*u8g2_font_5x8_tf*/ u8g2_font_pcsenior_8u);
+  u8g2->setFont(/*u8g2_font_5x8_tf*/ u8g2_font_pcsenior_8u);
   for (int i = 0; i < PART_COUNT; i++) {
-    u8g2_SetFontMode(u8g2, 1);
-    u8g2_SetDrawColor(u8g2, 1);
+    u8g2->setFontMode(1);
+    u8g2->setDrawColor(1);
 
     if (this->selectedPart == i) {
       if (this->activePartMenu == i) {
-        u8g2_DrawBox(u8g2, x + 1 + i * (width / PART_COUNT), y + 1, (width / PART_COUNT) - 3, kHeaderHeight - 2);
+        u8g2->drawBox(x + 1 + i * (width / PART_COUNT), y + 1, (width / PART_COUNT) - 3, kHeaderHeight - 2);
       } else {
-        u8g2_DrawFrame(u8g2, x + 1 + i * (width / PART_COUNT), y + 1, (width / PART_COUNT) - 3, kHeaderHeight - 2);
-        u8g2_DrawFrame(u8g2, x + i * (width / PART_COUNT), y, (width / PART_COUNT) - 1, kHeaderHeight);
+        u8g2->drawFrame(x + 1 + i * (width / PART_COUNT), y + 1, (width / PART_COUNT) - 3, kHeaderHeight - 2);
+        u8g2->drawFrame(x + i * (width / PART_COUNT), y, (width / PART_COUNT) - 1, kHeaderHeight);
       }
     } else {
-      u8g2_DrawFrame(u8g2, x + 1 + i * (width / PART_COUNT), y + 1, (width / PART_COUNT) - 3, kHeaderHeight - 2);
+      u8g2->drawFrame(x + 1 + i * (width / PART_COUNT), y + 1, (width / PART_COUNT) - 3, kHeaderHeight - 2);
     }
 
-    u8g2_SetDrawColor(u8g2, 2);
-    u8g2_DrawStr(u8g2, x + i * (width / PART_COUNT) + 5, y + 9, kPartNames[i]);
-    u8g2_SetDrawColor(u8g2, 1);
+    u8g2->setDrawColor(2);
+    u8g2->drawStr(x + i * (width / PART_COUNT) + 5, y + 9, kPartNames[i]);
+    u8g2->setDrawColor(1);
   }
 
-  u8g2_DrawHLine(u8g2, 0, kHeaderHeight + 1, width);
+  u8g2->drawHLine(0, kHeaderHeight + 1, width);
 
   this->partMenus[this->selectedPart].render(u8g2, x, y + kHeaderHeight + 3, width, height - kHeaderHeight - 3);
 }
diff --git a/midi2cv/ui/main_menu.h b/midi2cv/ui/main_menu.h
index adc7c21..319a6d5 100644
--- a/midi2cv/ui/main_menu.h
+++ b/midi2cv/ui/main_menu.h
@@ -2,7 +2,7 @@
 
 #include "../config.h"
 #include "part_menu.h"
-#include <u8g2.h>
+#include <U8g2lib.h>
 
 class MainMenu {
   public:
@@ -11,7 +11,7 @@ class MainMenu {
   void up();
   void down();
 
-  void render(u8g2_t* u8g2, int x, int y, int width, int height);
+  void render(U8G2* u8g2, int x, int y, int width, int height);
 
   MainMenu()
       : activePartMenu(0)
diff --git a/midi2cv/ui/part_menu.cc b/midi2cv/ui/part_menu.cc
index cfcf1fb..5b0b204 100644
--- a/midi2cv/ui/part_menu.cc
+++ b/midi2cv/ui/part_menu.cc
@@ -54,7 +54,7 @@ bool PartMenu::enter()
   return false;
 }
 
-void PartMenu::render(u8g2_t* u8g2, int x, int y, int width, int height)
+void PartMenu::render(U8G2* u8g2, int x, int y, int width, int height)
 {
   menu.render(u8g2, x, y, width, height);
 }
diff --git a/midi2cv/ui/part_menu.h b/midi2cv/ui/part_menu.h
index a7115bc..a5c1709 100644
--- a/midi2cv/ui/part_menu.h
+++ b/midi2cv/ui/part_menu.h
@@ -2,7 +2,7 @@
 
 #include "../menu/menu.h"
 #include "../menu/menu_items.h"
-#include <u8g2.h>
+#include <U8g2lib.h>
 
 class PartMenu {
   public:
@@ -13,7 +13,7 @@ class PartMenu {
   void up();
   void down();
 
-  void render(u8g2_t* u8g2, int x, int y, int width, int height);
+  void render(U8G2* u8g2, int x, int y, int width, int height);
 
   private:
   Menu menu;
diff --git a/stmlib b/stmlib
index 0f1dc19..99e1ad5 160000
--- a/stmlib
+++ b/stmlib
@@ -1 +1 @@
-Subproject commit 0f1dc19f23d34b6f282558794bc089a147015d4f
+Subproject commit 99e1ad5fb7b241e13ec780c00ef1c3fd0200fdac