Diff: u8glibARM/u8g_ll_api.c

Revision:

1:0e75de2a5d21

Parent:

0:d8f4c441e032

--- a/u8glibARM/u8g_ll_api.c	Fri Jun 10 15:20:20 2016 +0000
+++ b/u8glibARM/u8g_ll_api.c	Mon Jun 13 02:21:11 2016 +0000
@@ -1,582 +1,582 @@
-/*
-
-  u8g_ll_api.c
-  
-  low level api
-
-  Universal 8bit Graphics Library
-  
-  Copyright (c) 2011, 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 <stddef.h>
-#include "u8g.h"
-
-uint8_t u8g_call_dev_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
-{
-  return dev->dev_fn(u8g, dev, msg, arg); 
-}
-
-/*====================================================================*/
-
-uint8_t u8g_InitLL(u8g_t *u8g, u8g_dev_t *dev)
-{
-  uint8_t r;
-  u8g->state_cb(U8G_STATE_MSG_BACKUP_ENV);
-  r =  u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_INIT, NULL);
-  u8g->state_cb(U8G_STATE_MSG_BACKUP_U8G);
-  u8g->state_cb(U8G_STATE_MSG_RESTORE_ENV);
-  return r;
-}
-
-void u8g_FirstPageLL(u8g_t *u8g, u8g_dev_t *dev)
-{  
-  u8g->state_cb(U8G_STATE_MSG_BACKUP_ENV);
-  u8g->state_cb(U8G_STATE_MSG_RESTORE_U8G);
-  u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_PAGE_FIRST, NULL);
-  u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_PAGE_BOX, &(u8g->current_page));
-  u8g->state_cb(U8G_STATE_MSG_RESTORE_ENV);
-}
-
-uint8_t u8g_NextPageLL(u8g_t *u8g, u8g_dev_t *dev)
-{  
-  uint8_t r;
-  u8g->state_cb(U8G_STATE_MSG_BACKUP_ENV);
-  u8g->state_cb(U8G_STATE_MSG_RESTORE_U8G);
-  r = u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_PAGE_NEXT, NULL);
-  if ( r != 0 )
-  {
-    u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_PAGE_BOX, &(u8g->current_page));
-  }
-  u8g->state_cb(U8G_STATE_MSG_RESTORE_ENV);
-  return r;
-}
-
-uint8_t u8g_SetContrastLL(u8g_t *u8g, u8g_dev_t *dev, uint8_t contrast)
-{  
-  return u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_CONTRAST, &contrast);
-}
-
-void u8g_DrawPixelLL(u8g_t *u8g, u8g_dev_t *dev, u8g_uint_t x, u8g_uint_t y)
-{
-  u8g_dev_arg_pixel_t *arg = &(u8g->arg_pixel);
-  arg->x = x;
-  arg->y = y;
-  u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_SET_PIXEL, arg);
-}
-
-void u8g_Draw8PixelLL(u8g_t *u8g, u8g_dev_t *dev, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t pixel)
-{
-  u8g_dev_arg_pixel_t *arg = &(u8g->arg_pixel);
-  arg->x = x;
-  arg->y = y;
-  arg->dir = dir;
-  arg->pixel = pixel;
-  u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_SET_8PIXEL, arg);
-}
-
-void u8g_Draw4TPixelLL(u8g_t *u8g, u8g_dev_t *dev, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t pixel)
-{
-  u8g_dev_arg_pixel_t *arg = &(u8g->arg_pixel);
-  arg->x = x;
-  arg->y = y;
-  arg->dir = dir;
-  arg->pixel = pixel;
-  u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_SET_4TPIXEL, arg);
-}
-
-
-#ifdef U8G_DEV_MSG_IS_BBX_INTERSECTION
-uint8_t u8g_IsBBXIntersectionLL(u8g_t *u8g, u8g_dev_t *dev, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h)
-{  
-  return u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_IS_BBX_INTERSECTION, &arg);
-}
-#endif
-
-
-
-u8g_uint_t u8g_GetWidthLL(u8g_t *u8g, u8g_dev_t *dev)
-{
-  u8g_uint_t r;
-  u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_WIDTH, &r);
-  return r;
-}
-
-u8g_uint_t u8g_GetHeightLL(u8g_t *u8g, u8g_dev_t *dev)
-{       
-  u8g_uint_t r;
-  u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_HEIGHT, &r);
-  return r;
-}
-
-u8g_uint_t u8g_GetModeLL(u8g_t *u8g, u8g_dev_t *dev)
-{       
-  return u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_MODE, NULL);
-}
-
-
-
-/*====================================================================*/
-
-void u8g_UpdateDimension(u8g_t *u8g)
-{
-  u8g->width = u8g_GetWidthLL(u8g, u8g->dev);
-  u8g->height = u8g_GetHeightLL(u8g, u8g->dev);
-  u8g->mode = u8g_GetModeLL(u8g, u8g->dev);
-  /* 9 Dec 2012: u8g_scale.c requires update of current page */
-  u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_GET_PAGE_BOX, &(u8g->current_page));
-}
-
-static void u8g_init_data(u8g_t *u8g)
-{
-  u8g->font = NULL;
-  u8g->cursor_font = NULL;
-  u8g->cursor_bg_color = 0;
-  u8g->cursor_fg_color = 1;
-  u8g->cursor_encoding = 34;
-  u8g->cursor_fn = (u8g_draw_cursor_fn)0;
-
-#if defined(U8G_WITH_PINLIST)  
-  {
-    uint8_t i;
-    for( i = 0; i < U8G_PIN_LIST_LEN; i++ )
-      u8g->pin_list[i] = U8G_PIN_NONE;
-  }
-#endif
-  
-  u8g_SetColorIndex(u8g, 1);
-
-  u8g_SetFontPosBaseline(u8g);
-  
-  u8g->font_height_mode = U8G_FONT_HEIGHT_MODE_XTEXT;
-  u8g->font_ref_ascent = 0;
-  u8g->font_ref_descent = 0;
-  u8g->font_line_spacing_factor = 64;           /* 64 = 1.0, 77 = 1.2 line spacing factor */
-  u8g->line_spacing = 0;
-  
-  u8g->state_cb = u8g_state_dummy_cb;
-
-}
-
-uint8_t u8g_Begin(u8g_t *u8g)
-{
-  /* call and init low level driver and com device */
-  if ( u8g_InitLL(u8g, u8g->dev) == 0 )
-    return 0;
-  /* fetch width and height from the low level */
-  u8g_UpdateDimension(u8g);
-  return 1;
-}
-
-uint8_t u8g_Init(u8g_t *u8g, u8g_dev_t *dev)
-{
-  u8g_init_data(u8g);
-  u8g->dev = dev;
-  
-  /* On the Arduino Environment this will lead to two calls to u8g_Begin(), the following line will be called first (by U8glib constructors) */
-  /* if - in future releases - this is removed, then still call u8g_UpdateDimension() */
-  /* if Arduino call u8g_UpdateDimension else u8g_Begin */
-  /* issue 146 */
-  return u8g_Begin(u8g);
-}
-
-/* special init for pure ARM systems */
-uint8_t u8g_InitComFn(u8g_t *u8g, u8g_dev_t *dev, u8g_com_fnptr com_fn)
-{
-  u8g_init_data(u8g);
-  
-#if defined(U8G_WITH_PINLIST)  
-  {
-    uint8_t i;
-    for( i = 0; i < U8G_PIN_LIST_LEN; i++ )
-      u8g->pin_list[i] = U8G_PIN_DUMMY;
-  }
-#endif
-  
-  u8g->dev = dev;
-  
-  /* replace the device procedure with a custom communication procedure */
-  u8g->dev->com_fn = com_fn;
-  
-  /* On the Arduino Environment this will lead to two calls to u8g_Begin(), the following line will be called first (by U8glib constructors) */
-  /* if - in future releases - this is removed, then still call u8g_UpdateDimension() */
-  /* if Arduino call u8g_UpdateDimension else u8g_Begin */
-  /* issue 146 */
-  return u8g_Begin(u8g);
-}
-
-
-#if defined(U8G_WITH_PINLIST)  
-uint8_t u8g_InitSPI(u8g_t *u8g, u8g_dev_t *dev, uint8_t sck, uint8_t mosi, uint8_t cs, uint8_t a0, uint8_t reset)
-{
-  
-  /* fill data structure with some suitable values */
-  u8g_init_data(u8g);
-  u8g->dev = dev;
-    
-  /* assign user pins */
-  u8g->pin_list[U8G_PI_SCK] = sck;
-  u8g->pin_list[U8G_PI_MOSI] = mosi;
-  u8g->pin_list[U8G_PI_CS] = cs;
-  u8g->pin_list[U8G_PI_A0] = a0;
-  u8g->pin_list[U8G_PI_RESET] = reset;
-  
-  /* On the Arduino Environment this will lead to two calls to u8g_Begin(), the following line will be called first (by U8glib constructors) */
-  /* if - in future releases - this is removed, then still call u8g_UpdateDimension() */
-  /* if Arduino call u8g_UpdateDimension else u8g_Begin */
-  /* issue 146 */
-  return u8g_Begin(u8g);
-}
-
-uint8_t u8g_InitHWSPI(u8g_t *u8g, u8g_dev_t *dev, uint8_t cs, uint8_t a0, uint8_t reset)
-{
-  /* fill data structure with some suitable values */
-  u8g_init_data(u8g);
-  u8g->dev = dev;
-  
-  
-  /* assign user pins */
-  u8g->pin_list[U8G_PI_CS] = cs;
-  u8g->pin_list[U8G_PI_A0] = a0;
-  u8g->pin_list[U8G_PI_RESET] = reset;
-  
-  return u8g_Begin(u8g);
-}
-
-uint8_t u8g_InitI2C(u8g_t *u8g, u8g_dev_t *dev, uint8_t options)
-{
-  /* fill data structure with some suitable values */
-  u8g_init_data(u8g);
-  u8g->dev = dev;
-    
-  u8g->pin_list[U8G_PI_I2C_OPTION] = options;
-  
-  return u8g_Begin(u8g);
-}
-
-
-uint8_t u8g_Init8BitFixedPort(u8g_t *u8g, u8g_dev_t *dev, uint8_t en, uint8_t cs, uint8_t di, uint8_t rw, uint8_t reset)
-{
-  
-  /* fill data structure with some suitable values */
-  u8g_init_data(u8g);
-  u8g->dev = dev;
-    
-  /* assign user pins */
-
-  u8g->pin_list[U8G_PI_EN] = en;
-  u8g->pin_list[U8G_PI_CS] = cs;
-  u8g->pin_list[U8G_PI_DI] = di;
-  u8g->pin_list[U8G_PI_RW] = rw;
-  u8g->pin_list[U8G_PI_RESET] = reset;
-
-  return u8g_Begin(u8g);
-}
-
-uint8_t u8g_Init8Bit(u8g_t *u8g, u8g_dev_t *dev, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, 
-  uint8_t en, uint8_t cs1, uint8_t cs2, uint8_t di, uint8_t rw, uint8_t reset)
-{
-  
-  /* fill data structure with some suitable values */
-  u8g_init_data(u8g);
-  u8g->dev = dev;
-    
-  /* assign user pins */
-
-  u8g->pin_list[U8G_PI_D0] = d0;
-  u8g->pin_list[U8G_PI_D1] = d1;
-  u8g->pin_list[U8G_PI_D2] = d2;
-  u8g->pin_list[U8G_PI_D3] = d3;
-  u8g->pin_list[U8G_PI_D4] = d4;
-  u8g->pin_list[U8G_PI_D5] = d5;
-  u8g->pin_list[U8G_PI_D6] = d6;
-  u8g->pin_list[U8G_PI_D7] = d7;
-
-  u8g->pin_list[U8G_PI_EN] = en;
-  u8g->pin_list[U8G_PI_CS1] = cs1;
-  u8g->pin_list[U8G_PI_CS2] = cs2;
-  u8g->pin_list[U8G_PI_DI] = di;
-  u8g->pin_list[U8G_PI_RW] = rw;
-  u8g->pin_list[U8G_PI_RESET] = reset;
-  
-  return u8g_Begin(u8g);
-}
-
-/*
-
-  PIN_D0 8
-  PIN_D1 9
-  PIN_D2 10
-  PIN_D3 11
-  PIN_D4 4
-  PIN_D5 5
-  PIN_D6 6
-  PIN_D7 7
-
-  PIN_CS 14
-  PIN_A0 15
-  PIN_RESET 16
-  PIN_WR 17
-  PIN_RD 18
-  
-  u8g_InitRW8Bit(u8g, dev, d0, d1, d2, d3, d4, d5, d6, d7, cs, a0, wr, rd, reset)
-  u8g_InitRW8Bit(u8g, dev,  8,  9, 10, 11,  4,  5,  6,  7, 14, 15, 17, 18, 16)
-
-*/
-
-uint8_t u8g_InitRW8Bit(u8g_t *u8g, u8g_dev_t *dev, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, 
-  uint8_t cs, uint8_t a0, uint8_t wr, uint8_t rd, uint8_t reset)
-{
-  
-  /* fill data structure with some suitable values */
-  u8g_init_data(u8g);
-  u8g->dev = dev;
-    
-  /* assign user pins */
-
-  u8g->pin_list[U8G_PI_D0] = d0;
-  u8g->pin_list[U8G_PI_D1] = d1;
-  u8g->pin_list[U8G_PI_D2] = d2;
-  u8g->pin_list[U8G_PI_D3] = d3;
-  u8g->pin_list[U8G_PI_D4] = d4;
-  u8g->pin_list[U8G_PI_D5] = d5;
-  u8g->pin_list[U8G_PI_D6] = d6;
-  u8g->pin_list[U8G_PI_D7] = d7;
-
-  u8g->pin_list[U8G_PI_CS] = cs;
-  u8g->pin_list[U8G_PI_A0] = a0;
-  u8g->pin_list[U8G_PI_WR] = wr;
-  u8g->pin_list[U8G_PI_RD] = rd;
-  u8g->pin_list[U8G_PI_RESET] = reset;
-  
-  return u8g_Begin(u8g);
-}
-#endif /* defined(U8G_WITH_PINLIST)  */
-
-void u8g_FirstPage(u8g_t *u8g)
-{
-  u8g_FirstPageLL(u8g, u8g->dev);
-}
-
-uint8_t u8g_NextPage(u8g_t *u8g)
-{
-  if  ( u8g->cursor_fn != (u8g_draw_cursor_fn)0 )
-  {
-    u8g->cursor_fn(u8g);
-  }
-  return u8g_NextPageLL(u8g, u8g->dev);
-}
-
-uint8_t u8g_SetContrast(u8g_t *u8g, uint8_t contrast)
-{
-  return u8g_SetContrastLL(u8g, u8g->dev, contrast);
-}
-
-void u8g_SleepOn(u8g_t *u8g)
-{
-  u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_SLEEP_ON, NULL);
-}
-
-void u8g_SleepOff(u8g_t *u8g)
-{
-  u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_SLEEP_OFF, NULL);
-}
-
-
-void u8g_DrawPixel(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y)
-{
-  u8g_DrawPixelLL(u8g, u8g->dev, x, y);
-}
-
-void u8g_Draw8Pixel(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t pixel)
-{
-  u8g_Draw8PixelLL(u8g, u8g->dev, x, y, dir, pixel);
-}
-
-void u8g_Draw4TPixel(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t pixel)
-{
-  u8g_Draw4TPixelLL(u8g, u8g->dev, x, y, dir, pixel);
-}
-
-void u8g_Draw8ColorPixel(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t colpixel)
-{
-  u8g_dev_arg_pixel_t *arg = &(u8g->arg_pixel);
-  arg->x = x;
-  arg->y = y;
-  arg->dir = 0;
-  arg->pixel = 0x80;
-  arg->color = colpixel;
-  u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_SET_8PIXEL, arg);
-}
-
-/* u8g_IsBBXIntersection() has been moved to u8g_clip.c */
-#ifdef OBSOLETE_CODE
-uint8_t u8g_IsBBXIntersection(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h)
-{
-  /* new code */
-  u8g_dev_arg_bbx_t arg;
-  arg.x = x;
-  arg.y = y;
-  arg.w = w;
-  arg.h = h;
-  return u8g_is_box_bbx_intersection(&(u8g->current_page), &arg);
-
-  /* old code */
-  //return u8g_IsBBXIntersectionLL(u8g, u8g->dev, x, y, w, h);
-}
-#endif
-
-/*
-  idx: index for the palette entry (0..255)
-  r: value for red (0..255)
-  g: value for green (0..255)
-  b: value for blue (0..255)
-*/
-void u8g_SetColorEntry(u8g_t *u8g, uint8_t idx, uint8_t r, uint8_t g, uint8_t b)
-{
-  u8g_dev_arg_irgb_t irgb;
-  irgb.idx = idx;
-  irgb.r = r;
-  irgb.g = g;
-  irgb.b = b;  
-  u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_SET_COLOR_ENTRY, &irgb);
-}
-
-void u8g_SetColorIndex(u8g_t *u8g, uint8_t idx)
-{
-  u8g->arg_pixel.color = idx;
-  /*u8g->color_index = idx; */ /* must be removed */
-}
-
-void u8g_SetHiColor(u8g_t *u8g, uint16_t rgb)
-{
-  u8g->arg_pixel.color = rgb&255;
-  u8g->arg_pixel.hi_color = rgb>>8;
-  /*u8g->color_index = idx; */ /* must be removed */
-}
-
-void u8g_SetHiColorByRGB(u8g_t *u8g, uint8_t r, uint8_t g, uint8_t b)
-{
-  
-  r &= ~7;
-  g >>= 2;
-  b >>= 3;
-  u8g->arg_pixel.color = b;
-  u8g->arg_pixel.color |= (g & 7) << 5;
-  u8g->arg_pixel.hi_color = r;
-  u8g->arg_pixel.hi_color |= (g>>3) & 7;
-  
-  //u8g_SetHiColor(u8g, U8G_GET_HICOLOR_BY_RGB(r,g,b));
-}
-
-void u8g_SetRGB(u8g_t *u8g, uint8_t r, uint8_t g, uint8_t b)
-{
-  if ( u8g->mode == U8G_MODE_R3G3B2 ) 
-  {
-    r &= 0x0e0;
-    g &= 0x0e0;
-    g >>= 3;
-    b >>= 6;
-    u8g->arg_pixel.color = r | g | b;
-  }
-  else if ( u8g->mode == U8G_MODE_HICOLOR )
-  {
-    u8g_SetHiColorByRGB(u8g, r,g,b);
-  }
-  else
-  {
-    u8g->arg_pixel.color = r;
-    u8g->arg_pixel.hi_color = g;
-    u8g->arg_pixel.blue = b;
-  }
-}
-
-
-uint8_t u8g_GetColorIndex(u8g_t *u8g)
-{
-  return u8g->arg_pixel.color;
-}
-
-uint8_t u8g_GetDefaultForegroundColor(u8g_t *u8g)
-{
-  uint8_t mode;
-  mode = u8g_GetMode(u8g);
-  if ( mode == U8G_MODE_R3G3B2 ) 
-    return 255;     /* white */
-  else if ( u8g_GetMode(u8g) == U8G_MODE_GRAY2BIT )
-    return 3;         /* max intensity */
-  /* if ( u8g.getMode() == U8G_MODE_BW ) */
-  return 1;         /* pixel on */
-}
-
-void u8g_SetDefaultForegroundColor(u8g_t *u8g)
-{
-  if ( u8g->mode == U8G_MODE_HICOLOR )
-  {
-    u8g->arg_pixel.color = 0x0ff;
-    u8g->arg_pixel.hi_color = 0x0ff;
-  }
-  else
-  {
-    u8g_SetColorIndex(u8g, u8g_GetDefaultForegroundColor(u8g));
-  }
-}
-
-uint8_t u8g_GetDefaultBackgroundColor(u8g_t *u8g)
-{
-  return 0;
-}
-
-void u8g_SetDefaultBackgroundColor(u8g_t *u8g)
-{
-  u8g_SetColorIndex(u8g, u8g_GetDefaultBackgroundColor(u8g));         /* pixel on / black */
-}
-
-uint8_t u8g_GetDefaultMidColor(u8g_t *u8g)
-{
-  uint8_t mode;
-  mode = u8g_GetMode(u8g);
-  if ( mode == U8G_MODE_R3G3B2 ) 
-    return 0x06d;     /* gray: 01101101 */
-  else if ( mode == U8G_MODE_GRAY2BIT )
-    return 1;         /* low mid intensity */
-  /* if ( u8g.getMode() == U8G_MODE_BW ) */
-  return 1;         /* pixel on */
-}
-
-void u8g_SetDefaultMidColor(u8g_t *u8g)
-{
-  u8g_SetColorIndex(u8g, u8g_GetDefaultMidColor(u8g));
-}
-
-
-
-
+/*
+
+  u8g_ll_api.c
+
+  low level api
+
+  Universal 8bit Graphics Library
+
+  Copyright (c) 2011, 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 <stddef.h>
+#include "u8g.h"
+
+uint8_t u8g_call_dev_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
+{
+    return dev->dev_fn(u8g, dev, msg, arg);
+}
+
+/*====================================================================*/
+
+uint8_t u8g_InitLL(u8g_t *u8g, u8g_dev_t *dev)
+{
+    uint8_t r;
+    u8g->state_cb(U8G_STATE_MSG_BACKUP_ENV);
+    r =  u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_INIT, NULL);
+    u8g->state_cb(U8G_STATE_MSG_BACKUP_U8G);
+    u8g->state_cb(U8G_STATE_MSG_RESTORE_ENV);
+    return r;
+}
+
+void u8g_FirstPageLL(u8g_t *u8g, u8g_dev_t *dev)
+{
+    u8g->state_cb(U8G_STATE_MSG_BACKUP_ENV);
+    u8g->state_cb(U8G_STATE_MSG_RESTORE_U8G);
+    u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_PAGE_FIRST, NULL);
+    u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_PAGE_BOX, &(u8g->current_page));
+    u8g->state_cb(U8G_STATE_MSG_RESTORE_ENV);
+}
+
+uint8_t u8g_NextPageLL(u8g_t *u8g, u8g_dev_t *dev)
+{
+    uint8_t r;
+    u8g->state_cb(U8G_STATE_MSG_BACKUP_ENV);
+    u8g->state_cb(U8G_STATE_MSG_RESTORE_U8G);
+    r = u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_PAGE_NEXT, NULL);
+    if ( r != 0 ) {
+        u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_PAGE_BOX, &(u8g->current_page));
+    }
+    u8g->state_cb(U8G_STATE_MSG_RESTORE_ENV);
+    return r;
+}
+
+uint8_t u8g_SetContrastLL(u8g_t *u8g, u8g_dev_t *dev, uint8_t contrast)
+{
+    return u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_CONTRAST, &contrast);
+}
+
+void u8g_DrawPixelLL(u8g_t *u8g, u8g_dev_t *dev, u8g_uint_t x, u8g_uint_t y)
+{
+    u8g_dev_arg_pixel_t *arg = &(u8g->arg_pixel);
+    arg->x = x;
+    arg->y = y;
+    u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_SET_PIXEL, arg);
+}
+
+void u8g_Draw8PixelLL(u8g_t *u8g, u8g_dev_t *dev, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t pixel)
+{
+    //printf("u8g_Draw8PixelLL\r\n");
+    u8g_dev_arg_pixel_t *arg = &(u8g->arg_pixel);
+    arg->x = x;
+    arg->y = y;
+    arg->dir = dir;
+    arg->pixel = pixel;
+    u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_SET_8PIXEL, arg);
+}
+
+void u8g_Draw4TPixelLL(u8g_t *u8g, u8g_dev_t *dev, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t pixel)
+{
+    u8g_dev_arg_pixel_t *arg = &(u8g->arg_pixel);
+    arg->x = x;
+    arg->y = y;
+    arg->dir = dir;
+    arg->pixel = pixel;
+    u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_SET_4TPIXEL, arg);
+}
+
+
+#ifdef U8G_DEV_MSG_IS_BBX_INTERSECTION
+uint8_t u8g_IsBBXIntersectionLL(u8g_t *u8g, u8g_dev_t *dev, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h)
+{
+    return u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_IS_BBX_INTERSECTION, &arg);
+}
+#endif
+
+
+
+u8g_uint_t u8g_GetWidthLL(u8g_t *u8g, u8g_dev_t *dev)
+{
+    u8g_uint_t r;
+    u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_WIDTH, &r);
+    return r;
+}
+
+u8g_uint_t u8g_GetHeightLL(u8g_t *u8g, u8g_dev_t *dev)
+{
+    u8g_uint_t r;
+    u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_HEIGHT, &r);
+    return r;
+}
+
+u8g_uint_t u8g_GetModeLL(u8g_t *u8g, u8g_dev_t *dev)
+{
+    return u8g_call_dev_fn(u8g, dev, U8G_DEV_MSG_GET_MODE, NULL);
+}
+
+
+
+/*====================================================================*/
+
+void u8g_UpdateDimension(u8g_t *u8g)
+{
+    u8g->width = u8g_GetWidthLL(u8g, u8g->dev);
+    u8g->height = u8g_GetHeightLL(u8g, u8g->dev);
+    u8g->mode = u8g_GetModeLL(u8g, u8g->dev);
+    /* 9 Dec 2012: u8g_scale.c requires update of current page */
+    u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_GET_PAGE_BOX, &(u8g->current_page));
+}
+
+static void u8g_init_data(u8g_t *u8g)
+{
+    u8g->font = NULL;
+    u8g->cursor_font = NULL;
+    u8g->cursor_bg_color = 0;
+    u8g->cursor_fg_color = 1;
+    u8g->cursor_encoding = 34;
+    u8g->cursor_fn = (u8g_draw_cursor_fn)0;
+
+#if defined(U8G_WITH_PINLIST)
+    {
+        uint8_t i;
+        for( i = 0; i < U8G_PIN_LIST_LEN; i++ )
+            u8g->pin_list[i] = U8G_PIN_NONE;
+    }
+#endif
+
+    u8g_SetColorIndex(u8g, 1);
+
+    u8g_SetFontPosBaseline(u8g);
+
+    u8g->font_height_mode = U8G_FONT_HEIGHT_MODE_XTEXT;
+    u8g->font_ref_ascent = 0;
+    u8g->font_ref_descent = 0;
+    u8g->font_line_spacing_factor = 64;           /* 64 = 1.0, 77 = 1.2 line spacing factor */
+    u8g->line_spacing = 0;
+
+    u8g->state_cb = u8g_state_dummy_cb;
+
+}
+
+uint8_t u8g_Begin(u8g_t *u8g)
+{
+    /* call and init low level driver and com device */
+    if ( u8g_InitLL(u8g, u8g->dev) == 0 ) {
+        return 0;
+    }
+    /* fetch width and height from the low level */
+    u8g_UpdateDimension(u8g);
+    return 1;
+}
+
+uint8_t u8g_Init(u8g_t *u8g, u8g_dev_t *dev)
+{
+    u8g_init_data(u8g);
+    u8g->dev = dev;
+
+    /* On the Arduino Environment this will lead to two calls to u8g_Begin(), the following line will be called first (by U8glib constructors) */
+    /* if - in future releases - this is removed, then still call u8g_UpdateDimension() */
+    /* if Arduino call u8g_UpdateDimension else u8g_Begin */
+    /* issue 146 */
+    return u8g_Begin(u8g);
+}
+
+extern void open_led(void);
+extern void close_led(void);
+/* special init for pure ARM systems */
+uint8_t u8g_InitComFn(u8g_t *u8g, u8g_dev_t *dev, u8g_com_fnptr com_fn)
+{
+    //gpio_init_out(&g_LED, P0_13);
+    //log("Enter u8g_InitComFn()");
+    //open_led();
+    u8g_init_data(u8g);
+
+#if defined(U8G_WITH_PINLIST)
+    {
+        uint8_t i;
+        for( i = 0; i < U8G_PIN_LIST_LEN; i++ )
+            u8g->pin_list[i] = U8G_PIN_DUMMY;
+    }
+#endif
+
+    u8g->dev = dev;
+
+    /* replace the device procedure with a custom communication procedure */
+    u8g->dev->com_fn = com_fn;
+
+    /* On the Arduino Environment this will lead to two calls to u8g_Begin(), the following line will be called first (by U8glib constructors) */
+    /* if - in future releases - this is removed, then still call u8g_UpdateDimension() */
+    /* if Arduino call u8g_UpdateDimension else u8g_Begin */
+    /* issue 146 */
+    uint8_t ret;
+    ret = u8g_Begin(u8g);
+    //log("Leave u8g_InitComFn()");
+    return ret;
+}
+
+
+#if defined(U8G_WITH_PINLIST)
+uint8_t u8g_InitSPI(u8g_t *u8g, u8g_dev_t *dev, uint8_t sck, uint8_t mosi, uint8_t cs, uint8_t a0, uint8_t reset)
+{
+
+    /* fill data structure with some suitable values */
+    u8g_init_data(u8g);
+    u8g->dev = dev;
+
+    /* assign user pins */
+    u8g->pin_list[U8G_PI_SCK] = sck;
+    u8g->pin_list[U8G_PI_MOSI] = mosi;
+    u8g->pin_list[U8G_PI_CS] = cs;
+    u8g->pin_list[U8G_PI_A0] = a0;
+    u8g->pin_list[U8G_PI_RESET] = reset;
+
+    /* On the Arduino Environment this will lead to two calls to u8g_Begin(), the following line will be called first (by U8glib constructors) */
+    /* if - in future releases - this is removed, then still call u8g_UpdateDimension() */
+    /* if Arduino call u8g_UpdateDimension else u8g_Begin */
+    /* issue 146 */
+    return u8g_Begin(u8g);
+}
+
+uint8_t u8g_InitHWSPI(u8g_t *u8g, u8g_dev_t *dev, uint8_t cs, uint8_t a0, uint8_t reset)
+{
+    /* fill data structure with some suitable values */
+    u8g_init_data(u8g);
+    u8g->dev = dev;
+
+
+    /* assign user pins */
+    u8g->pin_list[U8G_PI_CS] = cs;
+    u8g->pin_list[U8G_PI_A0] = a0;
+    u8g->pin_list[U8G_PI_RESET] = reset;
+
+    return u8g_Begin(u8g);
+}
+
+uint8_t u8g_InitI2C(u8g_t *u8g, u8g_dev_t *dev, uint8_t options)
+{
+    /* fill data structure with some suitable values */
+    u8g_init_data(u8g);
+    u8g->dev = dev;
+
+    u8g->pin_list[U8G_PI_I2C_OPTION] = options;
 
+    return u8g_Begin(u8g);
+}
+
+
+uint8_t u8g_Init8BitFixedPort(u8g_t *u8g, u8g_dev_t *dev, uint8_t en, uint8_t cs, uint8_t di, uint8_t rw, uint8_t reset)
+{
+
+    /* fill data structure with some suitable values */
+    u8g_init_data(u8g);
+    u8g->dev = dev;
+
+    /* assign user pins */
+
+    u8g->pin_list[U8G_PI_EN] = en;
+    u8g->pin_list[U8G_PI_CS] = cs;
+    u8g->pin_list[U8G_PI_DI] = di;
+    u8g->pin_list[U8G_PI_RW] = rw;
+    u8g->pin_list[U8G_PI_RESET] = reset;
+
+    return u8g_Begin(u8g);
+}
+
+uint8_t u8g_Init8Bit(u8g_t *u8g, u8g_dev_t *dev, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7,
+                     uint8_t en, uint8_t cs1, uint8_t cs2, uint8_t di, uint8_t rw, uint8_t reset)
+{
+
+    /* fill data structure with some suitable values */
+    u8g_init_data(u8g);
+    u8g->dev = dev;
+
+    /* assign user pins */
+
+    u8g->pin_list[U8G_PI_D0] = d0;
+    u8g->pin_list[U8G_PI_D1] = d1;
+    u8g->pin_list[U8G_PI_D2] = d2;
+    u8g->pin_list[U8G_PI_D3] = d3;
+    u8g->pin_list[U8G_PI_D4] = d4;
+    u8g->pin_list[U8G_PI_D5] = d5;
+    u8g->pin_list[U8G_PI_D6] = d6;
+    u8g->pin_list[U8G_PI_D7] = d7;
+
+    u8g->pin_list[U8G_PI_EN] = en;
+    u8g->pin_list[U8G_PI_CS1] = cs1;
+    u8g->pin_list[U8G_PI_CS2] = cs2;
+    u8g->pin_list[U8G_PI_DI] = di;
+    u8g->pin_list[U8G_PI_RW] = rw;
+    u8g->pin_list[U8G_PI_RESET] = reset;
+
+    return u8g_Begin(u8g);
+}
+
+/*
+
+  PIN_D0 8
+  PIN_D1 9
+  PIN_D2 10
+  PIN_D3 11
+  PIN_D4 4
+  PIN_D5 5
+  PIN_D6 6
+  PIN_D7 7
+
+  PIN_CS 14
+  PIN_A0 15
+  PIN_RESET 16
+  PIN_WR 17
+  PIN_RD 18
+
+  u8g_InitRW8Bit(u8g, dev, d0, d1, d2, d3, d4, d5, d6, d7, cs, a0, wr, rd, reset)
+  u8g_InitRW8Bit(u8g, dev,  8,  9, 10, 11,  4,  5,  6,  7, 14, 15, 17, 18, 16)
+
+*/
+
+uint8_t u8g_InitRW8Bit(u8g_t *u8g, u8g_dev_t *dev, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7,
+                       uint8_t cs, uint8_t a0, uint8_t wr, uint8_t rd, uint8_t reset)
+{
+
+    /* fill data structure with some suitable values */
+    u8g_init_data(u8g);
+    u8g->dev = dev;
+
+    /* assign user pins */
+
+    u8g->pin_list[U8G_PI_D0] = d0;
+    u8g->pin_list[U8G_PI_D1] = d1;
+    u8g->pin_list[U8G_PI_D2] = d2;
+    u8g->pin_list[U8G_PI_D3] = d3;
+    u8g->pin_list[U8G_PI_D4] = d4;
+    u8g->pin_list[U8G_PI_D5] = d5;
+    u8g->pin_list[U8G_PI_D6] = d6;
+    u8g->pin_list[U8G_PI_D7] = d7;
+
+    u8g->pin_list[U8G_PI_CS] = cs;
+    u8g->pin_list[U8G_PI_A0] = a0;
+    u8g->pin_list[U8G_PI_WR] = wr;
+    u8g->pin_list[U8G_PI_RD] = rd;
+    u8g->pin_list[U8G_PI_RESET] = reset;
+
+    return u8g_Begin(u8g);
+}
+#endif /* defined(U8G_WITH_PINLIST)  */
+
+void u8g_FirstPage(u8g_t *u8g)
+{
+    u8g_FirstPageLL(u8g, u8g->dev);
+}
+
+uint8_t u8g_NextPage(u8g_t *u8g)
+{
+    if  ( u8g->cursor_fn != (u8g_draw_cursor_fn)0 ) {
+        u8g->cursor_fn(u8g);
+    }
+    return u8g_NextPageLL(u8g, u8g->dev);
+}
+
+uint8_t u8g_SetContrast(u8g_t *u8g, uint8_t contrast)
+{
+    return u8g_SetContrastLL(u8g, u8g->dev, contrast);
+}
+
+void u8g_SleepOn(u8g_t *u8g)
+{
+    u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_SLEEP_ON, NULL);
+}
+
+void u8g_SleepOff(u8g_t *u8g)
+{
+    u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_SLEEP_OFF, NULL);
+}
+
+
+void u8g_DrawPixel(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y)
+{
+    u8g_DrawPixelLL(u8g, u8g->dev, x, y);
+}
+
+void u8g_Draw8Pixel(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t pixel)
+{
+    u8g_Draw8PixelLL(u8g, u8g->dev, x, y, dir, pixel);
+}
+
+void u8g_Draw4TPixel(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t pixel)
+{
+    u8g_Draw4TPixelLL(u8g, u8g->dev, x, y, dir, pixel);
+}
+
+void u8g_Draw8ColorPixel(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t colpixel)
+{
+    u8g_dev_arg_pixel_t *arg = &(u8g->arg_pixel);
+    arg->x = x;
+    arg->y = y;
+    arg->dir = 0;
+    arg->pixel = 0x80;
+    arg->color = colpixel;
+    u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_SET_8PIXEL, arg);
+}
+
+/* u8g_IsBBXIntersection() has been moved to u8g_clip.c */
+#ifdef OBSOLETE_CODE
+uint8_t u8g_IsBBXIntersection(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h)
+{
+    /* new code */
+    u8g_dev_arg_bbx_t arg;
+    arg.x = x;
+    arg.y = y;
+    arg.w = w;
+    arg.h = h;
+    return u8g_is_box_bbx_intersection(&(u8g->current_page), &arg);
+
+    /* old code */
+    //return u8g_IsBBXIntersectionLL(u8g, u8g->dev, x, y, w, h);
+}
+#endif
+
+/*
+  idx: index for the palette entry (0..255)
+  r: value for red (0..255)
+  g: value for green (0..255)
+  b: value for blue (0..255)
+*/
+void u8g_SetColorEntry(u8g_t *u8g, uint8_t idx, uint8_t r, uint8_t g, uint8_t b)
+{
+    u8g_dev_arg_irgb_t irgb;
+    irgb.idx = idx;
+    irgb.r = r;
+    irgb.g = g;
+    irgb.b = b;
+    u8g_call_dev_fn(u8g, u8g->dev, U8G_DEV_MSG_SET_COLOR_ENTRY, &irgb);
+}
+
+void u8g_SetColorIndex(u8g_t *u8g, uint8_t idx)
+{
+    u8g->arg_pixel.color = idx;
+    /*u8g->color_index = idx; */ /* must be removed */
+}
+
+void u8g_SetHiColor(u8g_t *u8g, uint16_t rgb)
+{
+    u8g->arg_pixel.color = rgb&255;
+    u8g->arg_pixel.hi_color = rgb>>8;
+    /*u8g->color_index = idx; */ /* must be removed */
+}
+
+void u8g_SetHiColorByRGB(u8g_t *u8g, uint8_t r, uint8_t g, uint8_t b)
+{
+
+    r &= ~7;
+    g >>= 2;
+    b >>= 3;
+    u8g->arg_pixel.color = b;
+    u8g->arg_pixel.color |= (g & 7) << 5;
+    u8g->arg_pixel.hi_color = r;
+    u8g->arg_pixel.hi_color |= (g>>3) & 7;
+
+    //u8g_SetHiColor(u8g, U8G_GET_HICOLOR_BY_RGB(r,g,b));
+}
+
+void u8g_SetRGB(u8g_t *u8g, uint8_t r, uint8_t g, uint8_t b)
+{
+    if ( u8g->mode == U8G_MODE_R3G3B2 ) {
+        r &= 0x0e0;
+        g &= 0x0e0;
+        g >>= 3;
+        b >>= 6;
+        u8g->arg_pixel.color = r | g | b;
+    } else if ( u8g->mode == U8G_MODE_HICOLOR ) {
+        u8g_SetHiColorByRGB(u8g, r,g,b);
+    } else {
+        u8g->arg_pixel.color = r;
+        u8g->arg_pixel.hi_color = g;
+        u8g->arg_pixel.blue = b;
+    }
+}
+
+
+uint8_t u8g_GetColorIndex(u8g_t *u8g)
+{
+    return u8g->arg_pixel.color;
+}
+
+uint8_t u8g_GetDefaultForegroundColor(u8g_t *u8g)
+{
+    uint8_t mode;
+    mode = u8g_GetMode(u8g);
+    if ( mode == U8G_MODE_R3G3B2 )
+        return 255;     /* white */
+    else if ( u8g_GetMode(u8g) == U8G_MODE_GRAY2BIT )
+        return 3;         /* max intensity */
+    /* if ( u8g.getMode() == U8G_MODE_BW ) */
+    return 1;         /* pixel on */
+}
+
+void u8g_SetDefaultForegroundColor(u8g_t *u8g)
+{
+    if ( u8g->mode == U8G_MODE_HICOLOR ) {
+        u8g->arg_pixel.color = 0x0ff;
+        u8g->arg_pixel.hi_color = 0x0ff;
+    } else {
+        u8g_SetColorIndex(u8g, u8g_GetDefaultForegroundColor(u8g));
+    }
+}
+
+uint8_t u8g_GetDefaultBackgroundColor(u8g_t *u8g)
+{
+    return 0;
+}
+
+void u8g_SetDefaultBackgroundColor(u8g_t *u8g)
+{
+    u8g_SetColorIndex(u8g, u8g_GetDefaultBackgroundColor(u8g));         /* pixel on / black */
+}
+
+uint8_t u8g_GetDefaultMidColor(u8g_t *u8g)
+{
+    uint8_t mode;
+    mode = u8g_GetMode(u8g);
+    if ( mode == U8G_MODE_R3G3B2 )
+        return 0x06d;     /* gray: 01101101 */
+    else if ( mode == U8G_MODE_GRAY2BIT )
+        return 1;         /* low mid intensity */
+    /* if ( u8g.getMode() == U8G_MODE_BW ) */
+    return 1;         /* pixel on */
+}
+
+void u8g_SetDefaultMidColor(u8g_t *u8g)
+{
+    u8g_SetColorIndex(u8g, u8g_GetDefaultMidColor(u8g));
+}
+
+
+
+
+