Diff: Adafruit_SSD1306.h

Revision:

20:da33cca77ce5

Parent:

19:1b773847a04b

diff -r 1b773847a04b -r da33cca77ce5 Adafruit_SSD1306.h
--- a/Adafruit_SSD1306.h	Tue Feb 01 15:20:21 2022 +0000
+++ b/Adafruit_SSD1306.h	Wed Feb 02 17:55:38 2022 +0000
@@ -18,53 +18,15 @@
 
 /*
  *  Modified by Neal Horman 7/14/2012 for use in mbed
- * 
+ *
  *  Further modified by Istvan Cserny, January 31, 2022
  *  so that it could be used for the SH1106 I2C display as well
  *  The memory mode for the SSD1306 I2C display was changed to
- *  Page mode (0x10) and the virtual void sendDisplayBuffer()
+ *  Page addressing mode (0x10) and the virtual void sendDisplayBuffer()
  *  function has been rewritten accordingly.
  *
- *  To do: initialization of the SH1106 should be modified
- *  althogh also work with the default initialization.
  *
- * 
- * Example:
- * @code
- * #include "mbed.h"
- * #include "Adafruit_SSD1306.h"
- * 
- * I2C i2c(D14,D15);
- * Adafruit_SH1106_I2c oled(i2c, NC, 0x78, 64, 128);     // SH1106  I2C 128x64, with no reset pin
- * // Adafruit_SSD1306_I2c oled(i2c, NC, 0x78, 64, 128); // SSD1306 I2C 128x64, with no reset pin
- * // Adafruit_SSD1306_I2c oled(i2c, NC, 0x78, 32, 128); // SSD1306 I2C 128x32, with no reset pin
- *  
- *  
- * int main()
- * {
- *     uint16_t x=0;
- *     i2c.frequency(400000);
- *     oled.setRotation(0);
- *     oled.clearDisplay();
- *     oled.drawRect(0,0,oled.width(),oled.height(),1); 
- *     oled.display();
- *     oled.setTextColor(1);
- *     oled.setTextSize(1);
- *     oled.setTextCursor(10,8);
- *     oled.printf("SH1106 %ux%u",oled.width(),oled.height());
- *     oled.display();
- *     wait(2.0);
- *     oled.setTextSize(2);
- *     while(1) {
- *         oled.clearDisplay();
- *         oled.drawRect(0,0,oled.width(),oled.height(),1);
- *         oled.setTextCursor(10,8);
- *         oled.printf("x = %u",x++);
- *         oled.display();
- *         wait(1.0);
- *     }
- * }
- * @endcode 
+ *
  */
 
 #ifndef _ADAFRUIT_SSD1306_H_
@@ -236,6 +198,8 @@
         , mi2cAddress(i2cAddress)
     {
         begin();
+        command(0x20);       // SSD1306_MEMORYMODE
+        command(0x10);       // Page addressing mode (compatible with SG1106)
         splash();
         display();
     };
@@ -300,7 +264,7 @@
         , mi2c(i2c)
         , mi2cAddress(i2cAddress)
     {
-        begin();
+        begin2();
         splash();
         display();
     };
@@ -322,6 +286,34 @@
     };
 
 protected:
+    void begin2(void)
+    {
+        command(0xAE); //--display off
+        command(0xA1); //--set segment re-map 127 to 0
+        command(0xC8); //--Set COM Out Scan Dir 63 to 0
+        command(0x32); //--set pump voltage value to 8.0V (SH1106 only)
+        command(0x40); //--set start line address
+        command(0x81); //--set contrast control register
+        command(0x80); // POR value = 80
+        command(0xA4); //--set normal mode (A5: test mode)
+        command(0xA6); //--set normal display (i.e non-inverted mode)
+        command(0xA8); //--set multiplex ratio(1 to 64)
+        command(0x3F); //
+        command(0xAD); //--set DC-DC mode
+        command(0x8B); // DC-DC converter ON
+        command(0xD3); //--set display offset
+        command(0x00); // no offset
+        command(0xD5); //--set display clock divide ratio/oscillator frequency
+        command(0x50); // set frequency and divide ratio
+        command(0xD9); //--set dis-charge/pre-charge period
+        command(0x22); //
+        command(0xDA); //--set com pins hardware configuration
+        command(0x12);
+        command(0xDB); //--set vcomh
+        command(0x35); // SH1106: 0x35, SSD1306: 0x20 0.77xVcc
+        command(0xAF); //--turn on SSD1306 panel
+    };
+
     virtual void sendDisplayBuffer()
     {