Fork of the UniGraphic-Library for monochrome LCDs with ST7920 controller and 128x64-IIC-OLED-Display with SH1106-Controller

Diff: Inits/SH1106.cpp

Revision:

36:668396f861d2

Child:

37:5de028b08308

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Inits/SH1106.cpp	Sun Apr 22 21:41:24 2018 +0000
@@ -0,0 +1,225 @@
+/* mbed UniGraphic library - Device specific class
+ * SH1106 by Karl Zweimüller
+ * SSD1306 by Copyright (c) 2015 Peter Drescher
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+#include "Protocols.h"
+#include "SH1106.h"
+
+//////////////////////////////////////////////////////////////////////////////////
+// display settings ///////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////
+
+
+#define IC_X_SEGS    132 // 132 SEG
+#define IC_Y_COMS    64  // 64  COM
+
+#define SH1106_SETCONTRAST         0x81
+#define SH1106_DISPLAYALLON_RESUME 0xA4
+#define SH1106_DISPLAYALLON        0xA5
+#define SH1106_NORMALDISPLAY       0xA6
+#define SH1106_INVERTDISPLAY       0xA7
+#define SH1106_DISPLAYOFF          0xAE
+#define SH1106_DISPLAYON           0xAF
+#define SH1106_SETDISPLAYOFFSET    0xD3
+#define SH1106_SETCOMPINS          0xDA
+#define SH1106_SETVCOMDETECT       0xDB
+#define SH1106_SETDISPLAYCLOCKDIV  0xD5
+#define SH1106_SETPRECHARGE        0xD9
+#define SH1106_SETMULTIPLEX        0xA8
+#define SH1106_SETLOWCOLUMN        0x00
+#define SH1106_SETHIGHCOLUMN       0x10
+#define SH1106_SETSTARTLINE        0x40
+#define SH1106_MEMORYMODE          0x20
+#define SH1106_COMSCANINC          0xC0
+#define SH1106_COMSCANDEC          0xC8
+#define SH1106_SEGREMAP            0xA0
+#define SH1106_CHARGEPUMP          0x8D
+
+SH1106::SH1106(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char *name , unsigned int LCDSIZE_X, unsigned  int LCDSIZE_Y)
+    : LCD(displayproto, port, CS, reset, DC, WR, RD, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name)
+{
+    hw_reset();
+    BusEnable(true);
+    init();
+    cls();
+    set_orientation(1);
+    locate(0,0);
+}
+SH1106::SH1106(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char *name, unsigned int LCDSIZE_X, unsigned  int LCDSIZE_Y)
+    : LCD(displayproto, Hz, mosi, miso, sclk, CS, reset, DC, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name)
+{
+    hw_reset();
+    BusEnable(true);
+    init();
+    cls();
+    set_orientation(1);
+    locate(0,0);
+}
+
+SH1106::SH1106(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, PinName reset, const char* name , unsigned int LCDSIZE_X, unsigned  int LCDSIZE_Y)
+    : LCD(displayproto, Hz, address, sda, scl,reset, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name)
+{
+    hw_reset();
+    init();
+    cls();
+    set_orientation(1);
+    locate(0,0);
+}
+
+
+// reset and init the lcd controller
+void SH1106::init()
+{
+    /* Start Initial Sequence ----------------------------------------------------*/
+    /* SH1106
+     //  wr_cmd8(0xE2);   //  sw reset
+       wait_ms(15);
+
+       wr_cmd8(SH1106_DISPLAYOFF);    // no problem in SPI_16 for single byte cmds
+       wr_cmd16((SH1106_SETDISPLAYCLOCKDIV<<8)|0x80);   // wr_cmd16 for multibyte cmds issue in SPI16 mode
+     //  wr_cmd8(0x80); // in SPI_16 it would become 0xE380 and will break things up
+       wr_cmd16((SH1106_SETMULTIPLEX<<8)|63);
+    //   wr_cmd8(63);
+
+       wr_cmd16((SH1106_SETDISPLAYOFFSET<<8)|0x00);
+    //   wr_cmd8(0x0);
+
+       wr_cmd8(SH1106_SETSTARTLINE | 0x0);            // line #0
+
+       wr_cmd16((SH1106_CHARGEPUMP<<8)|0x14);
+     //  wr_cmd8(0x14);                         // 0x10
+
+       wr_cmd16((SH1106_MEMORYMODE<<8)|0x00);
+    //   wr_cmd8(0x00);                                  // 0x0 act like ks0108
+
+       wr_cmd8(SH1106_SEGREMAP ); //| 0x1);
+
+       wr_cmd8(SH1106_COMSCANDEC);
+
+       wr_cmd16((SH1106_SETCOMPINS<<8)|0x12);
+     //  wr_cmd8(0x12);                           //        LCDSIZE_Y == 32 ? 0x02 : 0x12);
+
+       wr_cmd16((SH1106_SETCONTRAST<<8)|0xCF);
+    //   wr_cmd8(0xCF);                              //  _rawHeight == 32 ? 0x8F : ((vccstate == SH1106_EXTERNALVCC) ? 0x9F : 0xCF) );
+
+       wr_cmd16((SH1106_SETPRECHARGE<<8)|0xF1);
+    //   wr_cmd8(0xF1);                               // : 0x22);
+
+       wr_cmd16((SH1106_SETVCOMDETECT<<8)|0x40);
+    //   wr_cmd8(0x40);
+
+       wr_cmd8(SH1106_DISPLAYALLON_RESUME);
+
+       //wr_cmd8(SH1106_NORMALDISPLAY);
+       wr_cmd8(SH1106_INVERTDISPLAY);
+
+       wr_cmd8(SH1106_DISPLAYON);
+    */
+
+//SH1106
+    wr_cmd8(0xAE);//--turn off oled panel
+    wr_cmd8(0x02);//---set low column address
+    wr_cmd8(0x10);//---set high column address
+    wr_cmd8(0x40);//--set start line address  Set Mapping RAM Display Start Line (0x00~0x3F)
+    wr_cmd8(0x81);//--set contrast control register
+    wr_cmd8(0xA0);//--Set contrast
+    wr_cmd8(0xA8);//--set multiplex ratio(1 to 64)
+    wr_cmd8(0x3F);//--1/64 duty
+    wr_cmd8(0xD3);//-set display offset    Shift Mapping RAM Counter (0x00~0x3F)
+    wr_cmd8(0x00);//-not offset
+    wr_cmd8(0xd5);//--set display clock divide ratio/oscillator frequency
+    wr_cmd8(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec
+    wr_cmd8(0xD9);//--set pre-charge period
+    wr_cmd8(0xF1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
+    wr_cmd8(0xDA);//--set com pins hardware configuration
+    wr_cmd8(0x12); // or 0x02
+    wr_cmd8(0xDB);//--set vcomh
+    wr_cmd8(0x40);//Set VCOM Deselect Level
+    //wr_cmd8(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02) // not on SH1106
+    wr_cmd8(0xA4);// Disable Entire Display On (0xa4/0xa5)
+    wr_cmd8(0xA6);// Disable Inverse Display On (0xa6/a7)
+
+    wr_cmd8(0xA1); // reverse order
+    //wr_cmd8(0xC0);//Set COM/Row Scan Direction
+    wr_cmd8(0xC8); //reverse direction
+    wr_cmd8(0xAF);//--turn on oled panel
+}
+
+////////////////////////////////////////////////////////////////////
+// functions that overrides the standard ones implemented in LCD.cpp
+////////////////////////////////////////////////////////////////////
+
+void SH1106::copy_to_lcd(void)
+{
+
+    for(int page=0; page<8 /*_LCDPAGES */; page++) {
+        wr_cmd8(0x02);             // set column low nibble
+        wr_cmd8(0x10);             // set column hi  nibble
+        wr_cmd8(0xB0+page);        // set page
+        wr_grambuf(buffer16+(page*screensize_X>>1), screensize_X>>1);   // send whole page pixels as shorts(16bit) not bytes!
+    }
+}
+
+void SH1106::cls(void)
+{
+    unsigned short tmp = _background^0xFFFF;
+    //memset(buffer,tmp,/*screensize_X*_LCDPAGES*/ 128*64/8);  // clear display buffer
+    memset(buffer,0x00,screensize_X*(screensize_Y>>3));  // clear display buffer
+    copy_to_lcd();
+}
+
+void SH1106::mirrorXY(mirror_t mode)
+{
+    switch (mode) {
+        case(NONE):
+            wr_cmd16(0xA0C0);
+            break;
+        case(X):
+            wr_cmd16(0xA1C0);
+            break;
+        case(Y):
+            wr_cmd16(0xA0C8);
+            break;
+        case(XY):
+            wr_cmd16(0xA1C8);
+            break;
+    }
+}
+
+void SH1106::set_contrast(int o)
+{
+    contrast = o;
+
+    wr_cmd16(0x8100|(o&0xFF));
+}
+
+void SH1106::pixel(int x, int y, unsigned short color)
+{
+    // first check parameter
+    if((x >= screensize_X) || (y >= screensize_Y) || (x<0) || (y<0)) return;
+
+    //Buffer[(Xpoint + (Ypoint / 8) * sOLED_DIS.OLED_Dis_Column)] |= 1 << (Ypoint % 8);
+    //Buffer[(Xpoint + (Ypoint / 8) * sOLED_DIS.OLED_Dis_Column)] |= 0 << (Ypoint % 8);
+    if (color) {
+        buffer[x+((y>>3)*screensize_X)] |=  0 << (y % 8);
+    } else       {
+        buffer[x+((y>>3)*screensize_X)] |=  1 << (y % 8);
+    }
+
+
+}
+
+
+unsigned short SH1106::pixelread(int x, int y)
+{
+    // first check parameter
+    if((x >= screensize_X) || (y >= screensize_Y) || (x<0) || (y<0)) return 0;
+
+    //Buffer[(Xpoint + (Ypoint / 8) * sOLED_DIS.OLED_Dis_Column)] |= 1 << (Ypoint % 8);
+    //Buffer[(Xpoint + (Ypoint / 8) * sOLED_DIS.OLED_Dis_Column)] |= 0 << (Ypoint % 8);
+    if (buffer[x+((y>>3)*screensize_X)] &  1 << (y % 8) == 0)
+        return 0xFFFF ;  // pixel not set, White
+    else return 0; // pixel set, Black
+}