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: Display/TFT.cpp

Revision:
8:26757296c79d
Parent:
7:bb0383b91104
Child:
10:668cf78ff93a
--- a/Display/TFT.cpp	Tue Feb 17 11:02:06 2015 +0000
+++ b/Display/TFT.cpp	Tue Feb 17 17:54:14 2015 +0000
@@ -207,14 +207,14 @@
     wr_cmd8(0x33);
     wr_data16(topfixedareasize); //num lines of top fixed area
     wr_data16(scrollareasize+scrollbugfix); //num lines of vertical scroll area, +1 for ILI9481 fix
-    if((areasize+startY)>height()) bfa=0;
-    else bfa = height()-(areasize+startY);
+    if((areasize+startY)>screensize_Y) bfa=0;
+    else bfa = screensize_Y-(areasize+startY);
     wr_data16(bfa); //num lines of bottom fixed area
 }
 void TFT::scroll (int lines) // ie 1= scrollup 1, 479= scrolldown 1
 {
     wr_cmd8(0x37);
-    wr_data16((topfixedareasize+lines)%scrollareasize); //num lines of top fixed area
+    wr_data16(topfixedareasize+(lines%scrollareasize)); // select the (absolute)line which will be displayed as first scrollarea line 
 }
 void TFT::scrollreset()
 {