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/PAR8.cpp
- Revision:
- 7:bb0383b91104
- Parent:
- 5:b222a9461d6b
- Child:
- 11:b842b8e332cb
--- a/Protocols/PAR8.cpp Mon Feb 16 01:18:29 2015 +0000
+++ b/Protocols/PAR8.cpp Tue Feb 17 11:02:06 2015 +0000
@@ -174,11 +174,42 @@
_CS = 1;
#endif
}
-unsigned int PAR8::rd_data32_wdummy()
+unsigned short PAR8::rd_gram()
{
#ifdef USE_CS
_CS = 0;
#endif
+ unsigned short r=0;
+ _DC = 1; // 1=data
+ _port.input();
+
+ _RD = 0;
+ _port.read(); //dummy read
+ _RD = 1;
+
+ _RD = 0;
+// _RD = 0; // add wait
+ r |= (_port.read()&0xFF);
+ r <<= 8;
+ _RD = 1;
+
+ _RD = 0;
+// _RD = 0; // add wait
+ r |= (_port.read()&0xFF);
+ _RD = 1;
+
+#ifdef USE_CS
+ _CS = 1;
+#endif
+ _port.output();
+ return r;
+}
+unsigned int PAR8::rd_reg_data32(unsigned char reg)
+{
+#ifdef USE_CS
+ _CS = 0;
+#endif
+ wr_cmd8(reg);
unsigned int r=0;
_DC = 1; // 1=data
_port.input();
@@ -217,35 +248,10 @@
_port.output();
return r;
}
-unsigned short PAR8::rd_gram()
+// in Par mode EXTC regs (0xB0-0xFF) can be directly read
+unsigned int PAR8::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
{
-#ifdef USE_CS
- _CS = 0;
-#endif
- unsigned short r=0;
- _DC = 1; // 1=data
- _port.input();
-
- _RD = 0;
- _port.read(); //dummy read
- _RD = 1;
-
- _RD = 0;
-// _RD = 0; // add wait
- r |= (_port.read()&0xFF);
- r <<= 8;
- _RD = 1;
-
- _RD = 0;
-// _RD = 0; // add wait
- r |= (_port.read()&0xFF);
- _RD = 1;
-
-#ifdef USE_CS
- _CS = 1;
-#endif
- _port.output();
- return r;
+ return rd_reg_data32(reg);
}
void PAR8::hw_reset()
{