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

Revision 12:9c8f3076347c, committed 2015-02-22

Comitter:

dreschpe

Date:

Sun Feb 22 00:05:34 2015 +0000

Parent:

11:b842b8e332cb

Child:

13:d8c593fa7705

Commit message:

Add SSD1306 OLED Driver

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Inits/SSD1306.cpp	Sun Feb 22 00:05:34 2015 +0000
@@ -0,0 +1,136 @@
+/* mbed UniGraphic library - Device specific class
+ * Copyright (c) 2015 Peter Drescher
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+  
+#include "Protocols.h"
+#include "SSD1306.h"
+
+//////////////////////////////////////////////////////////////////////////////////
+// display settings ///////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////
+
+
+#define IC_X_SEGS    128 // UC1608 SEG has range 0-239 (239-0 if MX=1), check your datasheet, important for the orientation
+#define IC_Y_COMS    64  // UC1608 COM has range 0-127 (127-0 if MY=1), check your datasheet, important for the orientation
+
+#define SSD1306_SETCONTRAST         0x81
+#define SSD1306_DISPLAYALLON_RESUME 0xA4
+#define SSD1306_DISPLAYALLON        0xA5
+#define SSD1306_NORMALDISPLAY       0xA6
+#define SSD1306_INVERTDISPLAY       0xA7
+#define SSD1306_DISPLAYOFF          0xAE
+#define SSD1306_DISPLAYON           0xAF
+#define SSD1306_SETDISPLAYOFFSET    0xD3
+#define SSD1306_SETCOMPINS          0xDA
+#define SSD1306_SETVCOMDETECT       0xDB
+#define SSD1306_SETDISPLAYCLOCKDIV  0xD5
+#define SSD1306_SETPRECHARGE        0xD9
+#define SSD1306_SETMULTIPLEX        0xA8
+#define SSD1306_SETLOWCOLUMN        0x00
+#define SSD1306_SETHIGHCOLUMN       0x10
+#define SSD1306_SETSTARTLINE        0x40
+#define SSD1306_MEMORYMODE          0x20
+#define SSD1306_COMSCANINC          0xC0
+#define SSD1306_COMSCANDEC          0xC8
+#define SSD1306_SEGREMAP            0xA0
+#define SSD1306_CHARGEPUMP          0x8D
+
+SSD1306::SSD1306(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);
+}
+SSD1306::SSD1306(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);
+}
+// reset and init the lcd controller
+void SSD1306::init()
+{
+    /* Start Initial Sequence ----------------------------------------------------*/
+    
+  //  wr_cmd8(0xE2);   //  sw reset
+    wait_ms(15);
+    
+    wr_cmd8(SSD1306_DISPLAYOFF);   
+    wr_cmd8(SSD1306_SETDISPLAYCLOCKDIV);   
+    wr_cmd8(0x80); 
+    wr_cmd8(SSD1306_SETMULTIPLEX);
+    wr_cmd8(63);
+    
+    wr_cmd8(SSD1306_SETDISPLAYOFFSET);
+    wr_cmd8(0x0);
+    
+    wr_cmd8(SSD1306_SETSTARTLINE | 0x0);            // line #0
+
+    wr_cmd8(SSD1306_CHARGEPUMP);
+    wr_cmd8(0x14);                         // 0x10 
+
+    wr_cmd8(SSD1306_MEMORYMODE);
+    wr_cmd8(0x00);                                  // 0x0 act like ks0108
+
+    wr_cmd8(SSD1306_SEGREMAP ); //| 0x1);
+
+    wr_cmd8(SSD1306_COMSCANDEC);
+
+    wr_cmd8(SSD1306_SETCOMPINS);
+    wr_cmd8(0x12);                           //        LCDSIZE_Y == 32 ? 0x02 : 0x12);        
+
+    wr_cmd8(SSD1306_SETCONTRAST);
+    wr_cmd8(0xCF);                              //  _rawHeight == 32 ? 0x8F : ((vccstate == SSD1306_EXTERNALVCC) ? 0x9F : 0xCF) );
+
+    wr_cmd8(SSD1306_SETPRECHARGE);
+    wr_cmd8(0xF1);                               // : 0x22);
+
+    wr_cmd8(SSD1306_SETVCOMDETECT);
+    wr_cmd8(0x40);
+
+    wr_cmd8(SSD1306_DISPLAYALLON_RESUME);
+
+    //wr_cmd8(SSD1306_NORMALDISPLAY);
+    wr_cmd8(SSD1306_INVERTDISPLAY);
+    
+    wr_cmd8(SSD1306_DISPLAYON);
+}
+
+////////////////////////////////////////////////////////////////////
+// functions that overrides the standard ones implemented in LCD.cpp
+////////////////////////////////////////////////////////////////////
+
+void SSD1306::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 SSD1306::set_contrast(int o)
+{
+    contrast = o;
+  
+    wr_cmd16(0x8100|(o));
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Inits/SSD1306.h	Sun Feb 22 00:05:34 2015 +0000
@@ -0,0 +1,69 @@
+#ifndef MBED_SSD1306_H
+#define MBED_SSD1306_H
+
+
+
+#include "mbed.h"
+#include "LCD.h"
+
+/** Class for UC1608 display controller
+* to be copypasted and adapted for other controllers
+*/
+class SSD1306 : public LCD
+{
+ 
+ public:
+
+    /** Create a PAR display interface
+    * @param displayproto only supports PAR_8
+    * @param port GPIO port name to use
+    * @param CS pin connected to CS of display
+    * @param reset pin connected to RESET of display
+    * @param DC pin connected to data/command of display
+    * @param WR pin connected to SDI of display
+    * @param RD pin connected to RS of display
+    * @param name The name used by the parent class to access the interface
+    * @param LCDSIZE_X x size in pixel - optional
+    * @param LCDSIZE_Y y size in pixel - optional
+    */ 
+    SSD1306(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char* name, unsigned int LCDSIZE_X = 128, unsigned  int LCDSIZE_Y = 64);
+  
+    /** Create an SPI display interface
+    * @param displayproto only supports SPI_8
+    * @param Hz SPI speed in Hz
+    * @param mosi SPI pin
+    * @param miso SPI pin
+    * @param sclk SPI pin
+    * @param CS pin connected to CS of display
+    * @param reset pin connected to RESET of display
+    * @param DC pin connected to data/command of display
+    * @param name The name used by the parent class to access the interface
+    * @param LCDSIZE_X x size in pixel - optional
+    * @param LCDSIZE_Y y size in pixel - optional
+    */ 
+    SSD1306(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char* name , unsigned int LCDSIZE_X = 128, unsigned  int LCDSIZE_Y = 64);
+  
+    /** set the contrast of the screen
+      * @note here overrided because of not standard command
+      * @param o contrast 0-63
+      */
+    virtual void set_contrast(int o);
+    
+  
+protected:
+    
+    
+    /** Init command sequence  
+    */
+    void init();
+    
+    /** set mirror mode
+      * @note here overriding the LCD class default one because of not standard commands
+      * @param mode NONE, X, Y, XY 
+      */
+    virtual void mirrorXY(mirror_t mode);
+
+};
+
+
+#endif
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