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
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: Inits/UC1608.cpp
- Revision:
- 0:75ec1b3cde17
- Child:
- 1:ff019d22b275
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Inits/UC1608.cpp Thu Feb 12 22:22:47 2015 +0000 @@ -0,0 +1,95 @@ +#include "Protocols.h" +#include "UC1608.h" + +////////////////////////////////////////////////////////////////////////////////// +// display settings /////////////////////////////////////////////////////// +///////////////////////////////////////////////////////////////////////// +#define IC_X_SEGS 240 // UC1608 SEG has range 0-239 (239-0 if MX=1), check your datasheet, important for the orientation +#define IC_Y_COMS 128 // UC1608 COM has range 0-127 (127-0 if MY=1), check your datasheet, important for the orientation +#define LCDSIZE_X 240 // display X pixels +#define LCDSIZE_Y 120 // display Y pixels, UC1608 is advertised as 240x128 but display size could be smaller + + + +UC1608::UC1608(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char *name) + : LCD(displayproto, port, CS, reset, DC, WR, RD, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name) +{ + hw_reset(); + BusEnable(true); + init(); + cls(); + set_orientation(1); + locate(0,0); +} +UC1608::UC1608(proto_t displayproto, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char *name) + : LCD(displayproto, mosi, miso, sclk, CS, reset, DC, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name) +{ + hw_reset(); + BusEnable(true); + init(); + cls(); + set_orientation(1); + locate(0,0); +} +// reset and init the lcd controller +void UC1608::init() +{ + /* Start Initial Sequence ----------------------------------------------------*/ + + // wr_cmd(0xE2); // sw reset + wait_ms(15); + + wr_cmd(0x27); // Multiplex rate :128 set temperature consenpation 0% + wr_cmd(0xEA); //set bias:1/12bias + + wr_cmd(0xC4); // set mirror MX=1,MY=0 (controller->display SEGs wiring inverted) + // wr_cmd(0xA0); // ADC select seg0-seg223 + //wr_cmd(0xA1); // ADC select seg223-seg0 + // wr_cmd(0xC8); // SHL select com63-com0 + //wr_cmd(0xC0); // SHL select com0-com63 + + wr_cmd(0x2F); // //Power Control:internal, LCD capacitance 60nf-90nf + wait_ms(10); + + // wr_cmd(0x81);//Set Gain and Potentiometer + // wr_cmd(0x40|46);//Set Gain and Potentiometer xx xxxxxx + set_contrast(46); + + wr_cmd(0x88); //disable colum/page address wraparound + wr_cmd(0xA4); // LCD display ram (EntireDisplayOn disable) + wr_cmd(0x40); // start line = 0 + wr_cmd(0xA6); // display normal (1 = illuminated) + wr_cmd(0xAF); // display ON + +} +//////////////////////////////////////////////////////////////////// +// functions that overrides the standard ones implemented in LCD.cpp +//////////////////////////////////////////////////////////////////// +void UC1608::mirrorXY(mirror_t mode) +{ + switch (mode) + { + case(NONE): + wr_cmd(0xC4); // this is in real X mirror command, but my display have SEGs wired inverted, so assume this is the default no-x-mirror + break; + case(X): + wr_cmd(0xC0); + break; + case(Y): + wr_cmd(0xCC); + break; + case(XY): + wr_cmd(0xC8); + break; + } +} +void UC1608::set_contrast(int o) +{ + contrast = o; + wr_cmd(0x81); // set volume + wr_cmd(0x40|(o&0x3F)); +} +void UC1608::BusEnable(bool enable) +{ + LCD::BusEnable(!enable); // crap IC has CS not inverted (active HIGH) +} \ No newline at end of file