Diff: u8g_dev_lc7981_160x80.c

Revision:

0:972874f31c98

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/u8g_dev_lc7981_160x80.c	Wed Mar 07 12:49:14 2018 +0000
@@ -0,0 +1,148 @@
+/*
+
+  u8g_dev_lc7981_160x80.c
+  
+  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 "u8g.h"
+
+#define WIDTH 160
+#define HEIGHT 80
+#define PAGE_HEIGHT 8
+
+
+/*
+  code ideas: 
+  https://github.com/vsergeev/embedded-drivers/tree/master/avr-lc7981
+  data sheets:
+  http://www.lcd-module.de/eng/pdf/zubehoer/lc7981.pdf
+  http://www.lcd-module.de/pdf/grafik/w160-6.pdf
+*/
+
+static const uint8_t u8g_dev_lc7981_160x80_init_seq[] PROGMEM = {
+  U8G_ESC_CS(0),             /* disable chip */
+  U8G_ESC_ADR(1),           /* instruction mode */
+  U8G_ESC_RST(15),           /* do reset low pulse with (15*16)+2 milliseconds (=maximum delay)*/
+  U8G_ESC_CS(1),             /* enable chip */
+  U8G_ESC_DLY(50),         /* delay 50 ms */
+  
+  
+  U8G_ESC_ADR(1),               /* instruction mode */
+  0x000,                                /* mode register */
+  U8G_ESC_ADR(0),               /* data mode */
+  0x032,                                /* display on (bit 5), master mode on (bit 4), graphics mode on (bit 1)*/
+
+  U8G_ESC_ADR(1),               /* instruction mode */
+  0x001,                                /* character/bits per pixel pitch */
+  U8G_ESC_ADR(0),               /* data mode */
+  0x007,                                /* 8 bits per pixel */
+
+  U8G_ESC_ADR(1),               /* instruction mode */
+  0x002,                                /* number of chars/byte width of the screen */
+  U8G_ESC_ADR(0),               /* data mode */
+  WIDTH/8-1,                         /* 8 bits per pixel */
+
+  U8G_ESC_ADR(1),               /* instruction mode */
+  0x003,                                /* time division */
+  U8G_ESC_ADR(0),               /* data mode */
+  0x07f,                                /*  */
+
+  U8G_ESC_ADR(1),               /* instruction mode */
+  0x008,                                /* display start low */
+  U8G_ESC_ADR(0),               /* data mode */
+  0x000,                                /*  */
+
+  U8G_ESC_ADR(1),               /* instruction mode */
+  0x009,                                /* display start high */
+  U8G_ESC_ADR(0),               /* data mode */
+  0x000,                                /*  */
+    
+  U8G_ESC_DLY(10),               /* delay 10 ms */
+  
+  U8G_ESC_CS(0),             /* disable chip */
+  U8G_ESC_END                /* end of sequence */
+};
+
+uint8_t u8g_dev_lc7981_160x80_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_NONE);
+      u8g_WriteEscSeqP(u8g, dev, u8g_dev_lc7981_160x80_init_seq);
+      break;
+    case U8G_DEV_MSG_STOP:
+      break;
+    case U8G_DEV_MSG_PAGE_NEXT:
+      {
+        uint8_t y, i;
+        uint16_t disp_ram_adr;
+        uint8_t *ptr;
+        u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
+        
+        u8g_SetAddress(u8g, dev, 1);           /* cmd mode */
+        u8g_SetChipSelect(u8g, dev, 1);
+        y = pb->p.page_y0;
+        ptr = pb->buf;
+        disp_ram_adr = WIDTH/8;
+        disp_ram_adr *= y;
+        for( i = 0; i < 8; i ++ )
+        {
+          u8g_SetAddress(u8g, dev, 1);           /* cmd mode */
+          u8g_WriteByte(u8g, dev, 0x00a );      /* display ram (cursor) address low byte */
+          u8g_SetAddress(u8g, dev, 0);           /* data mode */
+          u8g_WriteByte(u8g, dev, disp_ram_adr & 0x0ff );  
+
+          u8g_SetAddress(u8g, dev, 1);           /* cmd mode */
+          u8g_WriteByte(u8g, dev, 0x00b );      /* display ram (cursor) address hight byte */
+          u8g_SetAddress(u8g, dev, 0);           /* data mode */
+          u8g_WriteByte(u8g, dev, disp_ram_adr >> 8 );  
+          
+          u8g_SetAddress(u8g, dev, 1);           /* cmd mode */
+          u8g_WriteByte(u8g, dev, 0x00c );      /* write data */
+          u8g_SetAddress(u8g, dev, 0);           /* data mode */
+          u8g_WriteSequence(u8g, dev, WIDTH/8, ptr);
+          ptr += WIDTH/8;
+          disp_ram_adr += WIDTH/8;
+        }
+        u8g_SetChipSelect(u8g, dev, 0);
+      }
+      break;
+  }
+  return u8g_dev_pb8h1f_base_fn(u8g, dev, msg, arg);
+}
+
+U8G_PB_DEV(u8g_dev_lc7981_160x80_8bit, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_lc7981_160x80_fn, U8G_COM_FAST_PARALLEL);
+
+
+