diff -r 000000000000 -r 88d965579617 components/u8g2/csrc/u8g2_bitmap.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/components/u8g2/csrc/u8g2_bitmap.c	Tue Oct 08 12:00:31 2019 +0200
@@ -0,0 +1,218 @@
+/*
+
+  u8g2_bitmap.c
+
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+
+*/
+
+#include "u8g2.h"
+
+
+void u8g2_SetBitmapMode(u8g2_t *u8g2, uint8_t is_transparent) {
+  u8g2->bitmap_transparency = is_transparent;
+}
+
+/*
+  x,y 	Position on the display
+  len		Length of bitmap line in pixel. Note: This differs from u8glib which had a bytecount here.
+  b		Pointer to the bitmap line.
+  Only draw pixels which are set.
+*/
+
+void u8g2_DrawHorizontalBitmap(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
+{
+  uint8_t mask;
+  uint8_t color = u8g2->draw_color;
+  uint8_t ncolor = (color == 0 ? 1 : 0);
+
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  mask = 128;
+  while(len > 0)
+  {
+    if ( *b & mask ) {
+      u8g2->draw_color = color;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    } else if ( u8g2->bitmap_transparency == 0 ) {
+      u8g2->draw_color = ncolor;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    }
+
+    x++;
+    mask >>= 1;
+    if ( mask == 0 )
+    {
+      mask = 128;
+      b++;
+    }
+    len--;
+  }
+  u8g2->draw_color = color;
+}
+
+
+/* u8glib compatible bitmap draw function */
+void u8g2_DrawBitmap(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t cnt, u8g2_uint_t h, const uint8_t *bitmap)
+{
+  u8g2_uint_t w;
+  w = cnt;
+  w *= 8;
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  while( h > 0 )
+  {
+    u8g2_DrawHorizontalBitmap(u8g2, x, y, w, bitmap);
+    bitmap += cnt;
+    y++;
+    h--;
+  }
+}
+
+
+
+void u8g2_DrawHXBM(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
+{
+  uint8_t mask;
+  uint8_t color = u8g2->draw_color;
+  uint8_t ncolor = (color == 0 ? 1 : 0);
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  mask = 1;
+  while(len > 0) {
+    if ( *b & mask ) {
+      u8g2->draw_color = color;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    } else if ( u8g2->bitmap_transparency == 0 ) {
+      u8g2->draw_color = ncolor;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    }
+    x++;
+    mask <<= 1;
+    if ( mask == 0 )
+    {
+      mask = 1;
+      b++;
+    }
+    len--;
+  }
+  u8g2->draw_color = color;
+}
+
+
+void u8g2_DrawXBM(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, const uint8_t *bitmap)
+{
+  u8g2_uint_t blen;
+  blen = w;
+  blen += 7;
+  blen >>= 3;
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  while( h > 0 )
+  {
+    u8g2_DrawHXBM(u8g2, x, y, w, bitmap);
+    bitmap += blen;
+    y++;
+    h--;
+  }
+}
+
+
+
+
+
+
+void u8g2_DrawHXBMP(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
+{
+  uint8_t mask;
+  uint8_t color = u8g2->draw_color;
+  uint8_t ncolor = (color == 0 ? 1 : 0);
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  mask = 1;
+  while(len > 0)
+  {
+    if( u8x8_pgm_read(b) & mask ) {
+      u8g2->draw_color = color;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    } else if( u8g2->bitmap_transparency == 0 ) {
+      u8g2->draw_color = ncolor;
+      u8g2_DrawHVLine(u8g2, x, y, 1, 0);
+    }
+   
+    x++;
+    mask <<= 1;
+    if ( mask == 0 )
+    {
+      mask = 1;
+      b++;
+    }
+    len--;
+  }
+  u8g2->draw_color = color;
+}
+
+
+void u8g2_DrawXBMP(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, const uint8_t *bitmap)
+{
+  u8g2_uint_t blen;
+  blen = w;
+  blen += 7;
+  blen >>= 3;
+#ifdef U8G2_WITH_INTERSECTION
+  if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 ) 
+    return;
+#endif /* U8G2_WITH_INTERSECTION */
+  
+  while( h > 0 )
+  {
+    u8g2_DrawHXBMP(u8g2, x, y, w, bitmap);
+    bitmap += blen;
+    y++;
+    h--;
+  }
+}
+
+