Karl Zweimüller
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
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/LCD.cpp
- Revision:
- 35:b8d3f1e68000
- Parent:
- 34:a9648877491f
- Child:
- 36:668396f861d2
--- a/Display/LCD.cpp Sat May 20 21:12:05 2017 +0000
+++ b/Display/LCD.cpp Sun May 21 20:50:09 2017 +0000
@@ -93,7 +93,6 @@
set_auto_up(true);
tftID=0;
// locate(0,0);
-
}
LCD::LCD(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char* name)
: GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y), _LCDPAGES(lcdsize_y>>3), _IC_X_SEGS(ic_x_segs), _IC_Y_COMS(ic_y_coms), _IC_PAGES(ic_y_coms>>3)
@@ -290,14 +289,9 @@
// first check parameter
if((x >= screensize_X) || (y >= screensize_Y)) return;
- //if(color) buffer[(x + ((y>>3)*screensize_X))^1] &= ~(1 << (y&7)); // erase pixel
- //else buffer[(x + ((y>>3)*screensize_X))^1] |= (1 << (y&7)); //Black=0000, set pixel
-
- //if(color) buffer[(x + y*16)] &= ~(1 << (7-(x&7))); // erase pixel
- //else buffer[(x + y*16)] |= (1 << (7-(x&7))); //Black=0000, set pixel
-
- if (color) {buffer[(x>>3)+(y*16)]&= ~(1 << (7-(x&7)));}
- else {buffer[(x>>3)+(y*16)]|= (1 << (7-(x&7)));}
+
+ if (color) {buffer[(x>>3)+(y*_IC_X_SEGS>>4)]&= ~(1 << (7-(x&7)));}
+ else {buffer[(x>>3)+(y*_IC_X_SEGS>>4)]|= (1 << (7-(x&7)));}
//buffer[0]=0xFF;
//buffer[16]=0xAA;
@@ -310,7 +304,8 @@
// first check parameter
if((x >= screensize_X) || (y >= screensize_Y)) return 0;
- if((buffer[(x + ((y>>3)*screensize_X))^1] & (1 << (y&7)))==0) return 0xFFFF ; // pixel not set, White
+
+ if((buffer[(x>>3)+(y*_IC_X_SEGS>>4)] & (1 << (7-(x&7))))==0) return 0xFFFF ; // pixel not set, White
else return 0; // pixel set, Black
}
void LCD::copy_to_lcd(void)