Diff: u8g_dev_st7920_128x64.c

Revision:

0:972874f31c98

diff -r 000000000000 -r 972874f31c98 u8g_dev_st7920_128x64.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/u8g_dev_st7920_128x64.c	Wed Mar 07 12:49:14 2018 +0000
@@ -0,0 +1,176 @@
+/*
+
+  u8g_dev_st7920_128x64.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 128
+#define HEIGHT 64
+#define PAGE_HEIGHT 8
+
+
+/* init sequence from https://github.com/adafruit/ST7565-LCD/blob/master/ST7565/ST7565.cpp */
+static const uint8_t u8g_dev_st7920_128x64_init_seq[] PROGMEM = {
+  U8G_ESC_CS(0),             /* disable chip */
+  U8G_ESC_ADR(0),           /* instruction mode */
+  U8G_ESC_RST(15),           /* do reset low pulse with (15*16)+2 milliseconds (=maximum delay)*/
+  U8G_ESC_DLY(100),         /* 8 Dez 2012: additional delay 100 ms because of reset*/
+  U8G_ESC_CS(1),             /* enable chip */
+  U8G_ESC_DLY(50),         /* delay 50 ms */
+
+  0x038,                                /* 8 Bit interface (DL=1), basic instruction set (RE=0) */
+  0x00c,                                /* display on, cursor & blink off; 0x08: all off */
+  0x006,                                /* Entry mode: Cursor move to right ,DDRAM address counter (AC) plus 1, no shift */
+  0x002,                                /* disable scroll, enable CGRAM adress */
+  0x001,                                /* clear RAM, needs 1.6 ms */
+  U8G_ESC_DLY(100),               /* delay 100 ms */
+  
+  U8G_ESC_CS(0),             /* disable chip */
+  U8G_ESC_END                /* end of sequence */
+};
+
+uint8_t u8g_dev_st7920_128x64_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_400NS);
+      u8g_WriteEscSeqP(u8g, dev, u8g_dev_st7920_128x64_init_seq);
+      break;
+    case U8G_DEV_MSG_STOP:
+      break;
+    case U8G_DEV_MSG_PAGE_NEXT:
+      {
+        uint8_t y, i;
+        uint8_t *ptr;
+        u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
+        
+        u8g_SetAddress(u8g, dev, 0);           /* cmd mode */
+        u8g_SetChipSelect(u8g, dev, 1);
+        y = pb->p.page_y0;
+        ptr = pb->buf;
+        for( i = 0; i < 8; i ++ )
+        {
+          u8g_SetAddress(u8g, dev, 0);           /* cmd mode */
+          u8g_WriteByte(u8g, dev, 0x03e );      /* enable extended mode */
+
+          if ( y < 32 )
+          {
+                  u8g_WriteByte(u8g, dev, 0x080 | y );      /* y pos  */
+                  u8g_WriteByte(u8g, dev, 0x080  );      /* set x pos to 0*/
+          }
+          else
+          {
+                  u8g_WriteByte(u8g, dev, 0x080 | (y-32) );      /* y pos  */
+                  u8g_WriteByte(u8g, dev, 0x080 | 8);      /* set x pos to 64*/
+          }
+          
+          u8g_SetAddress(u8g, dev, 1);                  /* data mode */
+          u8g_WriteSequence(u8g, dev, WIDTH/8, ptr);
+          ptr += WIDTH/8;
+          y++;
+        }
+        u8g_SetChipSelect(u8g, dev, 0);
+      }
+      break;
+  }
+  return u8g_dev_pb8h1_base_fn(u8g, dev, msg, arg);
+}
+
+uint8_t u8g_dev_st7920_128x64_4x_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_400NS);
+      u8g_WriteEscSeqP(u8g, dev, u8g_dev_st7920_128x64_init_seq);
+      break;
+    case U8G_DEV_MSG_STOP:
+      break;
+    case U8G_DEV_MSG_PAGE_NEXT:
+      {
+        uint8_t y, i;
+        uint8_t *ptr;
+        u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
+        
+        u8g_SetAddress(u8g, dev, 0);           /* cmd mode */
+        u8g_SetChipSelect(u8g, dev, 1);
+        y = pb->p.page_y0;
+        ptr = pb->buf;
+        for( i = 0; i < 32; i ++ )
+        {
+          u8g_SetAddress(u8g, dev, 0);           /* cmd mode */
+          u8g_WriteByte(u8g, dev, 0x03e );      /* enable extended mode */
+
+          if ( y < 32 )
+          {
+                  u8g_WriteByte(u8g, dev, 0x080 | y );      /* y pos  */
+                  u8g_WriteByte(u8g, dev, 0x080  );      /* set x pos to 0*/
+          }
+          else
+          {
+                  u8g_WriteByte(u8g, dev, 0x080 | (y-32) );      /* y pos  */
+                  u8g_WriteByte(u8g, dev, 0x080 | 8);      /* set x pos to 64*/
+          }
+          
+          u8g_SetAddress(u8g, dev, 1);                  /* data mode */
+          u8g_WriteSequence(u8g, dev, WIDTH/8, ptr);
+          ptr += WIDTH/8;
+          y++;
+        }
+        u8g_SetChipSelect(u8g, dev, 0);
+      }
+      break;
+  }
+  return u8g_dev_pb32h1_base_fn(u8g, dev, msg, arg);
+}
+
+U8G_PB_DEV(u8g_dev_st7920_128x64_sw_spi, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_st7920_128x64_fn, U8G_COM_ST7920_SW_SPI);
+U8G_PB_DEV(u8g_dev_st7920_128x64_hw_spi, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_st7920_128x64_fn, U8G_COM_ST7920_HW_SPI);
+U8G_PB_DEV(u8g_dev_st7920_128x64_8bit, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_st7920_128x64_fn, U8G_COM_FAST_PARALLEL);
+U8G_PB_DEV(u8g_dev_st7920_128x64_custom, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_st7920_128x64_fn, u8g_com_arduino_st7920_custom_fn);
+
+
+
+#define QWIDTH (WIDTH*4)
+uint8_t u8g_dev_st7920_128x64_4x_buf[QWIDTH] U8G_NOCOMMON ; 
+u8g_pb_t u8g_dev_st7920_128x64_4x_pb = { {32, HEIGHT, 0, 0, 0},  WIDTH, u8g_dev_st7920_128x64_4x_buf}; 
+u8g_dev_t u8g_dev_st7920_128x64_4x_sw_spi = { u8g_dev_st7920_128x64_4x_fn, &u8g_dev_st7920_128x64_4x_pb, U8G_COM_ST7920_SW_SPI };
+u8g_dev_t u8g_dev_st7920_128x64_4x_hw_spi = { u8g_dev_st7920_128x64_4x_fn, &u8g_dev_st7920_128x64_4x_pb, U8G_COM_ST7920_HW_SPI };
+u8g_dev_t u8g_dev_st7920_128x64_4x_8bit = { u8g_dev_st7920_128x64_4x_fn, &u8g_dev_st7920_128x64_4x_pb, U8G_COM_FAST_PARALLEL };
+u8g_dev_t u8g_dev_st7920_128x64_4x_custom = { u8g_dev_st7920_128x64_4x_fn, &u8g_dev_st7920_128x64_4x_pb, u8g_com_arduino_st7920_custom_fn };
+
+
+