null device, issue #504

cppsrc/U8g2lib.h

@@ -316,6 +316,14 @@ uint8_t u8g2_UserInterfaceInputValue(u8g2_t *u8g2, const char *title, const char
 
 #ifdef U8X8_USE_PINS
 
+/* null device */
+class U8G2_NULL : public U8G2 {
+  public: U8G2_NULL(const u8g2_cb_t *rotation) : U8G2() {
+    u8g2_Setup_null(&u8g2, rotation, u8x8_byte_empty, u8x8_dummy_cb);
+  }
+};
+
+
 /* Arduino constructor list start */
 /* generated code (codebuild), u8g2 project */
 class U8G2_SSD1305_128X32_NONAME_1_4W_SW_SPI : public U8G2 {

cppsrc/U8x8lib.h

@@ -289,6 +289,13 @@ class U8X8 : public Print
 
 #ifdef U8X8_USE_PINS
 
+class U8X8_NULL : public U8X8 {
+  public: U8X8_NULL(void) : U8X8() {
+    u8x8_Setup(getU8x8(), u8x8_d_null_cb, u8x8_cad_empty, u8x8_byte_empty, u8x8_dummy_cb);
+  }
+};
+
+
 // constructor list start
 /* generated code (codebuild), u8g2 project */
 class U8X8_SSD1305_128X32_NONAME_4W_SW_SPI : public U8X8 {

csrc/u8g2.h

@@ -416,6 +416,9 @@ extern const u8g2_cb_t u8g2_cb_mirror;
 void u8g2_SetupBuffer(u8g2_t *u8g2, uint8_t *buf, uint8_t tile_buf_height, u8g2_draw_ll_hvline_cb ll_hvline_cb, const u8g2_cb_t *u8g2_cb);
 void u8g2_SetDisplayRotation(u8g2_t *u8g2, const u8g2_cb_t *u8g2_cb);
 
+/* null device setup */
+void u8g2_Setup_null(u8g2_t *u8g2, const u8g2_cb_t *rotation, u8x8_msg_cb byte_cb, u8x8_msg_cb gpio_and_delay_cb);
+
 /*==========================================*/
 /* u8g2_d_memory.c generated code start */
 uint8_t *u8g2_m_16_4_1(uint8_t *page_cnt);

csrc/u8g2_setup.c

@@ -281,6 +281,17 @@ const u8g2_cb_t u8g2_cb_r3 = { u8g2_update_dimension_r3, u8g2_draw_l90_r3 };
   
 const u8g2_cb_t u8g2_cb_mirror = { u8g2_update_dimension_r0, u8g2_draw_l90_mirrorr_r0 };
   
-  
+/*============================================*/
+/* setup for the null device */
+
+/* setup for the null (empty) device */
+void u8g2_Setup_null(u8g2_t *u8g2, const u8g2_cb_t *rotation, u8x8_msg_cb byte_cb, u8x8_msg_cb gpio_and_delay_cb)
+{
+  static uint8_t buf[8];
+  u8g2_SetupDisplay(u8g2, u8x8_d_null_cb, u8x8_cad_empty, byte_cb, gpio_and_delay_cb);
+  u8g2_SetupBuffer(u8g2, buf, 1, u8g2_ll_hvline_vertical_top_lsb, rotation);
+}
+
+
   
   

csrc/u8x8.h

@@ -478,6 +478,8 @@ void u8x8_d_helper_display_init(u8x8_t *u8g2);
 /*==========================================*/
 /* u8x8_setup.c */
 
+uint8_t u8x8_dummy_cb(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
+
 /* 
   Setup u8x8 object itself. This should be the very first function 
   called on the new u8x8 object. After this call, assign the callback
@@ -616,6 +618,7 @@ uint8_t u8x8_byte_SendBytes(u8x8_t *u8x8, uint8_t cnt, uint8_t *data) U8X8_NOINL
 uint8_t u8x8_byte_StartTransfer(u8x8_t *u8x8);
 uint8_t u8x8_byte_EndTransfer(u8x8_t *u8x8);
 
+uint8_t u8x8_byte_empty(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
 uint8_t u8x8_byte_4wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
 uint8_t u8x8_byte_8bit_6800mode(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
 uint8_t u8x8_byte_8bit_8080mode(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
@@ -746,6 +749,10 @@ void utf8_show(void);		/* show content of UTF-8 frame buffer */
 
 
 /*==========================================*/
+
+/* u8x8_setup.c */
+uint8_t u8x8_d_null_cb(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
+
 /* u8x8_d_XXX.c */
 uint8_t u8x8_d_uc1701_ea_dogs102(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
 uint8_t u8x8_d_uc1701_mini12864(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);

csrc/u8x8_byte.c

@@ -61,6 +61,25 @@ uint8_t u8x8_byte_EndTransfer(u8x8_t *u8x8)
   return u8x8->byte_cb(u8x8, U8X8_MSG_BYTE_END_TRANSFER, 0, NULL);
 }
 
+/*=========================================*/
+
+uint8_t u8x8_byte_empty(U8X8_UNUSED u8x8_t *u8x8, uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+    case U8X8_MSG_BYTE_INIT:
+    case U8X8_MSG_BYTE_SET_DC:
+    case U8X8_MSG_BYTE_START_TRANSFER:
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      break;	/* do nothing */
+  }
+  return 1;	/* always succeed */
+}
+
+
+/*=========================================*/
+
 
 /*
   Uses:

csrc/u8x8_setup.c

@@ -36,6 +36,7 @@
 
 #include "u8x8.h"
 
+/* universal dummy callback, which will be default for all callbacks */
 uint8_t u8x8_dummy_cb(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
 {
   /* the dummy callback will not handle any message and will fail for all messages */
@@ -43,6 +44,48 @@ uint8_t u8x8_dummy_cb(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UN
 }
 
 
+static const u8x8_display_info_t u8x8_null_display_info =
+{
+  /* chip_enable_level = */ 0,
+  /* chip_disable_level = */ 1,
+  
+  /* post_chip_enable_wait_ns = */ 0,
+  /* pre_chip_disable_wait_ns = */ 0,
+  /* reset_pulse_width_ms = */ 0, 
+  /* post_reset_wait_ms = */ 0, 
+  /* sda_setup_time_ns = */ 0,		
+  /* sck_pulse_width_ns = */ 0,	/* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
+  /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
+  /* spi_mode = */ 0,		/* active high, rising edge */
+  /* i2c_bus_clock_100kHz = */ 4,
+  /* data_setup_time_ns = */ 0,
+  /* write_pulse_width_ns = */ 0,
+  /* tile_width = */ 1,		/* 8x8 */
+  /* tile_hight = */ 1,
+  /* default_x_offset = */ 0,
+  /* flipmode_x_offset = */ 0,
+  /* pixel_width = */ 8,
+  /* pixel_height = */ 8
+};
+
+
+/* a special null device */
+uint8_t u8x8_d_null_cb(u8x8_t *u8x8, uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
+{
+  switch(msg)
+  {
+    case U8X8_MSG_DISPLAY_SETUP_MEMORY:
+      u8x8_d_helper_display_setup_memory(u8x8, &u8x8_null_display_info);
+      break;
+    case U8X8_MSG_DISPLAY_INIT:
+      u8x8_d_helper_display_init(u8x8);
+      break;
+  }
+  /* the null device callback will succeed for all messages */
+  return 1;
+}
+
+
 /*
   Description:
     Setup u8x8

sys/arduino/internal/DebounceU8x8/DebounceU8x8.ino

@@ -46,6 +46,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

sys/arduino/internal/InputValueU8x8/InputValueU8x8.ino

@@ -46,6 +46,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

sys/arduino/internal/SelectionListU8x8/SelectionList.ino

@@ -46,6 +46,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

sys/arduino/internal/StringLineU8x8/StringLineU8x8.ino

@@ -46,6 +46,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

sys/arduino/issue195/issue195.ino

@@ -5,6 +5,7 @@
 // U8g2 Contructor List (Frame Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_full_buffer/FPS/FPS.ino

@@ -172,6 +172,7 @@
 // U8g2 Contructor List (Frame Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_full_buffer/FontUsage/FontUsage.ino

@@ -90,9 +90,10 @@
 // U8g2 Contructor List (Frame Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
-U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
+//U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_3W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
 //U8G2_SSD1306_128X64_ALT0_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // same as the NONAME variant, but may solve the "every 2nd line skipped" problem

sys/arduino/u8g2_full_buffer/GraphicsTest/GraphicsTest.ino

@@ -56,6 +56,7 @@
 // U8g2 Contructor List (Frame Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_full_buffer/HelloWorld/HelloWorld.ino

@@ -55,6 +55,7 @@
 // U8g2 Contructor List (Frame Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_full_buffer/PrintUTF8/PrintUTF8.ino

@@ -58,6 +58,7 @@
 // U8g2 Contructor List (Frame Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_full_buffer/SelectionList/SelectionList.ino

@@ -55,6 +55,7 @@
 // U8g2 Contructor List (Frame Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_full_buffer/Shennong/Shennong.ino

@@ -99,6 +99,7 @@
 // U8g2 Contructor List (Frame Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_full_buffer/U8g2Logo/U8g2Logo.ino

@@ -56,6 +56,7 @@
 // U8g2 Contructor List (Frame Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/AlarmClock/AlarmClock.ino

@@ -48,6 +48,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/Chinese/Chinese.ino

@@ -58,6 +58,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/Clock/Clock.ino

@@ -60,6 +60,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/ContrastTest/ContrastTest.ino

@@ -57,6 +57,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/DirectAccess/DirectAccess.ino

@@ -61,6 +61,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/ExtUTF8/ExtUTF8.ino

@@ -57,6 +57,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/FPS/FPS.ino

@@ -240,6 +240,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/FlipMode/FlipMode.ino

@@ -52,6 +52,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/Gauge/Gauge.ino

@@ -70,6 +70,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/GraphicsTest/GraphicsTest.ino

@@ -57,6 +57,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/HelloWorld/HelloWorld.ino

@@ -57,6 +57,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/Japanese/Japanese.ino

@@ -58,6 +58,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/Korean/Korean.ino

@@ -58,6 +58,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/PowerSaveTest/PowerSaveTest.ino

@@ -51,6 +51,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/PrintHelloWorld/PrintHelloWorld.ino

@@ -58,6 +58,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/PrintProgmem/PrintProgmem.ino

@@ -61,6 +61,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/PrintUTF8/PrintUTF8.ino

@@ -58,6 +58,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/ScrollingText/ScrollingText.ino

@@ -61,6 +61,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/SelectionList/SelectionList.ino

@@ -47,6 +47,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/Shennong/Shennong.ino

@@ -99,6 +99,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/U8g2Logo/U8g2Logo.ino

@@ -56,6 +56,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/UserPtr/UserPtr.ino

@@ -59,6 +59,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/XBM/XBM.ino

@@ -61,6 +61,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8g2_page_buffer/XORTest/XORTest.ino

@@ -61,6 +61,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

sys/arduino/u8x8/ButtonTest/ButtonTest.ino

@@ -44,6 +44,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

sys/arduino/u8x8/FlipMode/FlipMode.ino

@@ -47,6 +47,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

sys/arduino/u8x8/GraphicsTest/GraphicsTest.ino

@@ -49,6 +49,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

sys/arduino/u8x8/HelloWorld/HelloWorld.ino

@@ -46,6 +46,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

sys/arduino/u8x8/MessageBox/MessageBox.ino

@@ -46,6 +46,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

sys/arduino/u8x8/PrintLine/PrintLine.ino

@@ -46,6 +46,7 @@
 // U8x8 Contructor List 
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)

tools/inoupdate/frame_buffer.ino

@@ -1,5 +1,6 @@
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

tools/inoupdate/page_buffer.ino

@@ -1,5 +1,6 @@
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8 pixel display which does nothing
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);

tools/inoupdate/u8x8.ino

@@ -1,5 +1,6 @@
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8x8setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
+//U8X8_NULL u8x8;	// null device, a 8x8 pixel display which does nothing
 //U8X8_SSD1306_128X64_NONAME_4W_SW_SPI u8x8(/* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 6, /* dc=*/ 4, /* reset=*/ 12);	// Arduboy (DevKit)
 //U8X8_SSD1306_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy 10 (Production, Kickstarter Edition)