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:
- 20:14daa48ffd4c
- Parent:
- 18:ffa58f1a680a
- Child:
- 21:ae0a4eedfc90
--- a/Display/LCD.cpp Mon Mar 02 10:52:26 2015 +0000
+++ b/Display/LCD.cpp Mon Mar 23 14:08:04 2015 +0000
@@ -243,15 +243,17 @@
// first check parameter
if((x >= screensize_X) || (y >= screensize_Y)) return;
-// if(draw_mode == NORMAL)
-// {
- 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
-// }
-// else
-// { // XOR mode
-// if(color == 1) buffer[x + ((y>>3) * screensize_X)] ^= (1 << (y&7)); // xor pixel
-// }
+ 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
+}
+unsigned short LCD::pixelread(int x, int y)
+{
+ if(!(orientation&1)) SWAP(x,y);
+ // 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
+ else return 0; // pixel set, Black
}
void LCD::copy_to_lcd(void)
{