single pass implementation for DOGXL160 display on Raspberry Pi

Makefile.am

@@ -67,6 +67,7 @@ SRC_COMMON_ALG= \
     csrc/u8g_pb16h2.c \
     csrc/u8g_pb16v1.c \
     csrc/u8g_pb16v2.c \
+    csrc/u8g_pb208v2.c \
     csrc/u8g_pb32h1.c \
     csrc/u8g_pb8h1.c \
     csrc/u8g_pb8h1f.c \

cppsrc/U8glib.h

@@ -771,6 +771,13 @@ class U8GLIB_DOGXL160_2X_GR : public U8GLIB
       { }
 };
 
+class U8GLIB_DOGXL160_RPI : public U8GLIB 
+{
+  public:
+    U8GLIB_DOGXL160_RPI(uint8_t cs, uint8_t a0, uint8_t reset = U8G_PIN_NONE) 
+      : U8GLIB(&u8g_dev_uc1610_dogxl160_rpi, cs, a0, reset)
+      { }
+};
 
 class U8GLIB_NHD27OLED_BW : public U8GLIB 
 {

csrc/u8g.h

@@ -396,6 +396,8 @@ extern u8g_dev_t u8g_dev_uc1610_dogxl160_2x_bw_hw_spi;
 extern u8g_dev_t u8g_dev_uc1610_dogxl160_2x_gr_sw_spi;
 extern u8g_dev_t u8g_dev_uc1610_dogxl160_2x_gr_hw_spi;
 
+extern u8g_dev_t u8g_dev_uc1610_dogxl160_rpi;
+
 /* Display: Generic KS0108b, Size: 128x64 monochrom */
 extern u8g_dev_t u8g_dev_ks0108_128x64;         /* official Arduino Library interface */
 extern u8g_dev_t u8g_dev_ks0108_128x64_fast;    /* faster, but uses private tables from the Arduino Library */

csrc/u8g_dev_uc1610_dogxl160.c

@@ -273,6 +273,42 @@ uint8_t u8g_dev_uc1610_dogxl160_2x_gr_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg
   return u8g_dev_pb16v2_base_fn(u8g, dev, msg, arg);
 }
 
+uint8_t u8g_dev_uc1610_dogxl160_rpi_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
+{
+  switch(msg)
+  {
+    case U8G_DEV_MSG_INIT:
+      u8g_InitCom(u8g, dev, U8G_SPI_CLK_CYCLE_300NS);
+      u8g_WriteEscSeqP(u8g, dev, u8g_dev_uc1610_dogxl160_init_seq);
+      break;
+    case U8G_DEV_MSG_STOP:
+      break;
+    case U8G_DEV_MSG_PAGE_NEXT:
+      {
+        u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
+
+        for (uint8_t j = 0; j < 26; j++) {
+            u8g_WriteEscSeqP(u8g, dev, u8g_dev_uc1610_dogxl160_data_start);    
+            u8g_WriteByte(u8g, dev, 0x060 | (pb->p.page*2+j) ); /* select current page (UC1610) */
+            u8g_SetAddress(u8g, dev, 1);           /* data mode */
+            if ( u8g_WriteSequence(u8g, dev, WIDTH, (uint8_t *)(pb->buf)+WIDTH*j) == 0 )
+              return 0;
+        }
+
+        u8g_SetChipSelect(u8g, dev, 0);
+      }
+      break;
+    case U8G_DEV_MSG_CONTRAST:
+      u8g_SetChipSelect(u8g, dev, 1);
+      u8g_SetAddress(u8g, dev, 0);          /* instruction mode */
+      u8g_WriteByte(u8g, dev, 0x081);
+      u8g_WriteByte(u8g, dev, (*(uint8_t *)arg) >> 1);
+      u8g_SetChipSelect(u8g, dev, 0);      
+      return 1;
+  }
+  return u8g_dev_pb208v2_base_fn(u8g, dev, msg, arg);
+}
+
 U8G_PB_DEV(u8g_dev_uc1610_dogxl160_bw_sw_spi, WIDTH, HEIGHT, 8, u8g_dev_uc1610_dogxl160_bw_fn, U8G_COM_SW_SPI);
 U8G_PB_DEV(u8g_dev_uc1610_dogxl160_bw_hw_spi, WIDTH, HEIGHT, 8, u8g_dev_uc1610_dogxl160_bw_fn, U8G_COM_HW_SPI);
 
@@ -288,3 +324,7 @@ uint8_t u8g_dev_uc1610_dogxl160_2x_gr_buf[WIDTH*2] U8G_NOCOMMON ;
 u8g_pb_t u8g_dev_uc1610_dogxl160_2x_gr_pb = { {8, HEIGHT, 0, 0, 0},  WIDTH, u8g_dev_uc1610_dogxl160_2x_gr_buf}; 
 u8g_dev_t u8g_dev_uc1610_dogxl160_2x_gr_sw_spi = { u8g_dev_uc1610_dogxl160_2x_gr_fn, &u8g_dev_uc1610_dogxl160_2x_gr_pb, U8G_COM_SW_SPI };
 u8g_dev_t u8g_dev_uc1610_dogxl160_2x_gr_hw_spi = { u8g_dev_uc1610_dogxl160_2x_gr_fn, &u8g_dev_uc1610_dogxl160_2x_gr_pb, U8G_COM_HW_SPI };
+
+uint8_t u8g_dev_uc1610_dogxl160_rpi_buf[WIDTH*26] U8G_NOCOMMON ; 
+u8g_pb_t u8g_dev_uc1610_dogxl160_rpi_pb = { {HEIGHT, HEIGHT, 0, 0, 0},  WIDTH, u8g_dev_uc1610_dogxl160_rpi_buf}; 
+u8g_dev_t u8g_dev_uc1610_dogxl160_rpi = { u8g_dev_uc1610_dogxl160_rpi_fn, &u8g_dev_uc1610_dogxl160_rpi_pb, U8G_COM_HW_SPI };

csrc/u8g_pb208v2.c

@@ -0,0 +1,176 @@
+/*
+
+  u8g_pb208v2.c
+
+  208 bit height 2 bit per pixel page buffer
+  byte has vertical orientation
+
+  Universal 8bit Graphics Library
+
+  Copyright (c) 2012, 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 "u8g.h"
+#include <string.h>
+
+
+void u8g_pb208v2_Clear(u8g_pb_t *b)
+{
+  uint8_t *ptr = (uint8_t *)b->buf;
+  uint8_t *end_ptr = ptr;
+
+  /* two bits per pixel, 16 bits height --> 8 pixel --> 4 pixel per byte */
+
+  for (int i = 1; i <= 13; i++) { // TODO GK remove for
+    end_ptr += b->width;
+  }
+
+  do
+  {
+    *ptr++ = 0;
+  } while( ptr != end_ptr );
+}
+
+void u8g_pb208v2Init(u8g_pb_t *b, void *buf, u8g_uint_t width)
+{
+  b->buf = buf;
+  b->width = width;
+  u8g_pb208v2_Clear(b);
+}
+
+void u8g_pb208v2_set_pixel(u8g_pb_t *b, u8g_uint_t x, u8g_uint_t y, uint8_t color_index)
+{
+  register uint8_t mask;
+  uint8_t *ptr = b->buf;
+  y -= b->p.page_y0;
+  if ( y >= 4 )
+  {
+    for (int i = 1; i <= y/4; i++) { // TODO GK remove for
+        ptr += b->width;
+    }
+  }
+  mask = 0x03;
+  y &= 0x03;
+  y <<= 1;
+  mask <<= y;
+  mask ^=0xff;
+  color_index &= 3;
+  color_index <<= y;
+  ptr += x;
+  *ptr &= mask;
+  *ptr |= color_index;
+}
+
+
+void u8g_pb208v2_SetPixel(u8g_pb_t *b, const u8g_dev_arg_pixel_t * const arg_pixel)
+{
+  if ( arg_pixel->y < b->p.page_y0 )
+    return;
+  if ( arg_pixel->y > b->p.page_y1 )
+    return;
+  if ( arg_pixel->x >= b->width )
+    return;
+  u8g_pb208v2_set_pixel(b, arg_pixel->x, arg_pixel->y, arg_pixel->color);
+}
+
+
+void u8g_pb208v2_Set8PixelStd(u8g_pb_t *b, u8g_dev_arg_pixel_t *arg_pixel)
+{
+  register uint8_t pixel = arg_pixel->pixel;
+  do
+  {
+    if ( pixel & 128 )
+    {
+      u8g_pb208v2_SetPixel(b, arg_pixel);
+    }
+    switch( arg_pixel->dir )
+    {
+      case 0: arg_pixel->x++; break;
+      case 1: arg_pixel->y++; break;
+      case 2: arg_pixel->x--; break;
+      case 3: arg_pixel->y--; break;
+    }
+    pixel <<= 1;
+  } while( pixel != 0  );
+}
+
+
+
+uint8_t u8g_dev_pb208v2_base_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
+{
+  u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
+  switch(msg)
+  {
+    case U8G_DEV_MSG_SET_8PIXEL:
+      if ( u8g_pb_Is8PixelVisible(pb, (u8g_dev_arg_pixel_t *)arg) )
+      {
+        u8g_pb208v2_Set8PixelStd(pb, (u8g_dev_arg_pixel_t *)arg);
+      }
+      break;
+    case U8G_DEV_MSG_SET_PIXEL:
+      u8g_pb208v2_SetPixel(pb, (u8g_dev_arg_pixel_t *)arg);
+      break;
+    case U8G_DEV_MSG_INIT:
+      break;
+    case U8G_DEV_MSG_STOP:
+      break;
+    case U8G_DEV_MSG_PAGE_FIRST:
+      u8g_pb208v2_Clear(pb);
+      u8g_page_First(&(pb->p));
+      break;
+    case U8G_DEV_MSG_PAGE_NEXT:
+      if ( u8g_page_Next(&(pb->p)) == 0 )
+        return 0;
+      u8g_pb208v2_Clear(pb);
+      break;
+#ifdef U8G_DEV_MSG_IS_BBX_INTERSECTION
+    case U8G_DEV_MSG_IS_BBX_INTERSECTION:
+      return u8g_pb_IsIntersection(pb, (u8g_dev_arg_bbx_t *)arg);
+#endif
+    case U8G_DEV_MSG_GET_PAGE_BOX:
+      u8g_pb_GetPageBox(pb, (u8g_box_t *)arg);
+      break;
+    case U8G_DEV_MSG_GET_WIDTH:
+      *((u8g_uint_t *)arg) = pb->width;
+      break;
+    case U8G_DEV_MSG_GET_HEIGHT:
+      *((u8g_uint_t *)arg) = pb->p.total_height;
+      break;
+    case U8G_DEV_MSG_SET_COLOR_ENTRY:
+      break;
+    case U8G_DEV_MSG_SET_XY_CB:
+      break;
+    case U8G_DEV_MSG_GET_MODE:
+      return U8G_MODE_GRAY2BIT;
+  }
+  return 1;
+}
+
+