Karl Zweimüller / UniGraphic

UniGraphic-Fork for ST7920-LCD-controller and SH1106. Tested with 128x64 LCD with SPI and 128x64-OLED with IIC

Dependents:   UniGraphic-St7920-Test AfficheurUTILECO

Fork of UniGraphic by GraphicsDisplay

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

/media/uploads/charly/20170522_210344.jpg

/media/uploads/charly/20180425_230623.jpg

Had to adapt LCD for following reasons:

  • Give access to screenbuffer buffer[] to parent class
  • pixel() and pixel_read() as they are hardware-dependent
  • added reset-pin to IIC-Interface

GraphicDisplay:: sends buffer to LCD when auto_update is set to true.

Testprogram for ST7920 can be found here:

https://developer.mbed.org/users/charly/code/UniGraphic-St7920-Test/

Diff: Protocols/SPI16.h

Revision:
7:bb0383b91104
Parent:
6:8356d48a07db
Child:
11:b842b8e332cb
--- a/Protocols/SPI16.h	Mon Feb 16 01:18:29 2015 +0000
+++ b/Protocols/SPI16.h	Tue Feb 17 11:02:06 2015 +0000
@@ -77,19 +77,27 @@
     */   
     virtual void wr_grambuf(unsigned short* data, unsigned int lenght);
     
-    /** Read 4x8bit data from display controller (with dummy cycle)
-    *
-    * @returns data as uint
-    *
-    */ 
-    virtual unsigned int rd_data32_wdummy();
-    
     /** Read 16bit pixeldata from display controller (with dummy cycle)
     *
     * @returns 16bit color
     */ 
     virtual unsigned short rd_gram();
     
+    /** Read 4x8bit register data (with dummy cycle)
+    * @param reg the register to read
+    * @returns data as uint
+    * 
+    */ 
+    virtual unsigned int rd_reg_data32(unsigned char reg);
+    
+    /** Read 3x8bit ExtendedCommands register data
+    * @param reg the register to read
+    * @param SPIreadenablecmd vendor/device specific cmd to read EXTC registers
+    * @returns data as uint
+    * @note EXTC regs (0xB0 to 0xFF) are read/write registers but needs special cmd to be read in SPI mode
+    */ 
+    virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd);
+    
     /** HW reset sequence (without display init commands)   
     */
     virtual void hw_reset();