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: Protocols/SPI8.cpp
- Revision:
- 11:b842b8e332cb
- Parent:
- 7:bb0383b91104
- Child:
- 20:14daa48ffd4c
diff -r 668cf78ff93a -r b842b8e332cb Protocols/SPI8.cpp
--- a/Protocols/SPI8.cpp Thu Feb 19 00:33:27 2015 +0000
+++ b/Protocols/SPI8.cpp Fri Feb 20 21:32:25 2015 +0000
@@ -135,7 +135,7 @@
_CS = 1;
#endif
}
-unsigned short SPI8::rd_gram()
+unsigned short SPI8::rd_gram(bool convert)
{
#ifdef USE_CS
_CS = 0;
@@ -146,15 +146,18 @@
r |= _spi.write(0);
r <<= 8;
r |= _spi.write(0);
- r <<= 8;
- r |= _spi.write(0);
+ if(convert)
+ {
+ r <<= 8;
+ r |= _spi.write(0);
+ // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
+ // during reading, you read the raw 18bit gram
+ r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
+ }
_CS = 1; // force CS HIG to interupt the "read state"
#ifndef USE_CS //if CS is not used, force fixed LOW again
_CS = 0;
#endif
- // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
- // during reading, you read the raw 18bit gram
- r = RGB18to16((r&0xFC0000)>>16, (r&0xFC00)>>8, r&0xFC);// 18bit pixel, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
return (unsigned short)r;
}
unsigned int SPI8::rd_reg_data32(unsigned char reg)