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/IST3020.cpp
- Revision:
- 0:75ec1b3cde17
- Child:
- 1:ff019d22b275
diff -r 000000000000 -r 75ec1b3cde17 Inits/IST3020.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Inits/IST3020.cpp Thu Feb 12 22:22:47 2015 +0000 @@ -0,0 +1,63 @@ +#include "Protocols.h" +#include "IST3020.h" + +////////////////////////////////////////////////////////////////////////////////// +// display settings /////////////////////////////////////////////////////// +///////////////////////////////////////////////////////////////////////// +#define IC_X_SEGS 256 // IST3020 SEG has range 0-255 (255-0 if ADC=1), check your datasheet, important for the orientation +#define IC_Y_COMS 64 // IST3020 COM has range 0-63 (63-0 if SHL=1), check your datasheet, important for the orientation +#define LCDSIZE_X 192 // display X pixels, IST3020 is advertised as 224x65 but display size could be smaller +#define LCDSIZE_Y 64 // display Y pixels, the 65th is for accessing "icons" + + + +IST3020::IST3020(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(); +} +IST3020::IST3020(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(); + init(); +} +// reset and init the lcd controller +void IST3020::init() +{ + /* Start Initial Sequence ----------------------------------------------------*/ + + wr_cmd(0xE2); // sw reset + wait_ms(10); + + wr_cmd(0xAE); // display off + wr_cmd(0xAB); // built-in OSC on + wr_cmd(0xA2); // bias voltage (1/9) + // wr_cmd(0xA3); // bias voltage (1/7) + + 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(0x2C); // Internal Voltage Converter ON + wait_ms(10); + wr_cmd(0x2E); // Internal Voltage Regulator ON + wait_ms(10); + wr_cmd(0x2F); // Internal Voltage Follower ON + wait_ms(10); + wr_cmd(0x20); // Regulor_Resistor_Select resistor ratio 20-27 20=4.5(default) 27=8.0, 0.5 steps + set_contrast(48); + //wr_cmd(0x81); // set contrast (reference voltage register set) + //wr_cmd(0x20); // contrast 00-3F default 20 + + wr_cmd(0xA4); // LCD display ram (EntireDisplayOn disable) + //wr_cmd(0x70); // External Capacitors Discharge function enable (should be enabled by default) + //wr_cmd(0x77); // External Capacitors Discharge function disable + wr_cmd(0x40); // start line = 0 + wr_cmd(0xA6); // display normal (1 = illuminated) + wr_cmd(0xAF); // display ON + +} \ No newline at end of file