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/
Revision 13:d8c593fa7705, committed 2015-02-22
- Comitter:
- Geremia
- Date:
- Sun Feb 22 16:13:11 2015 +0000
- Parent:
- 12:9c8f3076347c
- Child:
- 14:29bab588ba75
- Commit message:
- multibyte cmds workaround for compatibility with actual SPI_16 NOP trick (see LCD class wr_cmd8)
Changed in this revision
| Inits/SSD1306.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/Inits/SSD1306.cpp Sun Feb 22 00:05:34 2015 +0000
+++ b/Inits/SSD1306.cpp Sun Feb 22 16:13:11 2015 +0000
@@ -64,38 +64,38 @@
// wr_cmd8(0xE2); // sw reset
wait_ms(15);
- wr_cmd8(SSD1306_DISPLAYOFF);
- wr_cmd8(SSD1306_SETDISPLAYCLOCKDIV);
- wr_cmd8(0x80);
- wr_cmd8(SSD1306_SETMULTIPLEX);
- wr_cmd8(63);
+ wr_cmd8(SSD1306_DISPLAYOFF); // no problem in SPI_16 for single byte cmds
+ wr_cmd16((SSD1306_SETDISPLAYCLOCKDIV<<8)|0x80); // wr_cmd16 for multibyte cmds issue in SPI16 mode
+ // wr_cmd8(0x80); // in SPI_16 it would become 0xE380 and will break things up
+ wr_cmd16((SSD1306_SETMULTIPLEX<<8)|63);
+ // wr_cmd8(63);
- wr_cmd8(SSD1306_SETDISPLAYOFFSET);
- wr_cmd8(0x0);
+ wr_cmd16((SSD1306_SETDISPLAYOFFSET<<8)|0x00);
+ // wr_cmd8(0x0);
wr_cmd8(SSD1306_SETSTARTLINE | 0x0); // line #0
- wr_cmd8(SSD1306_CHARGEPUMP);
- wr_cmd8(0x14); // 0x10
+ wr_cmd16((SSD1306_CHARGEPUMP<<8)|0x14);
+ // wr_cmd8(0x14); // 0x10
- wr_cmd8(SSD1306_MEMORYMODE);
- wr_cmd8(0x00); // 0x0 act like ks0108
+ wr_cmd16((SSD1306_MEMORYMODE<<8)|0x00);
+ // wr_cmd8(0x00); // 0x0 act like ks0108
wr_cmd8(SSD1306_SEGREMAP ); //| 0x1);
wr_cmd8(SSD1306_COMSCANDEC);
- wr_cmd8(SSD1306_SETCOMPINS);
- wr_cmd8(0x12); // LCDSIZE_Y == 32 ? 0x02 : 0x12);
+ wr_cmd16((SSD1306_SETCOMPINS<<8)|0x12);
+ // wr_cmd8(0x12); // LCDSIZE_Y == 32 ? 0x02 : 0x12);
- wr_cmd8(SSD1306_SETCONTRAST);
- wr_cmd8(0xCF); // _rawHeight == 32 ? 0x8F : ((vccstate == SSD1306_EXTERNALVCC) ? 0x9F : 0xCF) );
+ wr_cmd16((SSD1306_SETCONTRAST<<8)|0xCF);
+ // wr_cmd8(0xCF); // _rawHeight == 32 ? 0x8F : ((vccstate == SSD1306_EXTERNALVCC) ? 0x9F : 0xCF) );
- wr_cmd8(SSD1306_SETPRECHARGE);
- wr_cmd8(0xF1); // : 0x22);
+ wr_cmd16((SSD1306_SETPRECHARGE<<8)|0xF1);
+ // wr_cmd8(0xF1); // : 0x22);
- wr_cmd8(SSD1306_SETVCOMDETECT);
- wr_cmd8(0x40);
+ wr_cmd16((SSD1306_SETVCOMDETECT<<8)|0x40);
+ // wr_cmd8(0x40);
wr_cmd8(SSD1306_DISPLAYALLON_RESUME);