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/
Inits/IST3020.cpp@0:75ec1b3cde17, 2015-02-12 (annotated)
- Committer:
- Geremia
- Date:
- Thu Feb 12 22:22:47 2015 +0000
- Revision:
- 0:75ec1b3cde17
- Child:
- 1:ff019d22b275
Initial tests, LCD par and spi ok
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Geremia | 0:75ec1b3cde17 | 1 | #include "Protocols.h" |
Geremia | 0:75ec1b3cde17 | 2 | #include "IST3020.h" |
Geremia | 0:75ec1b3cde17 | 3 | |
Geremia | 0:75ec1b3cde17 | 4 | ////////////////////////////////////////////////////////////////////////////////// |
Geremia | 0:75ec1b3cde17 | 5 | // display settings /////////////////////////////////////////////////////// |
Geremia | 0:75ec1b3cde17 | 6 | ///////////////////////////////////////////////////////////////////////// |
Geremia | 0:75ec1b3cde17 | 7 | #define IC_X_SEGS 256 // IST3020 SEG has range 0-255 (255-0 if ADC=1), check your datasheet, important for the orientation |
Geremia | 0:75ec1b3cde17 | 8 | #define IC_Y_COMS 64 // IST3020 COM has range 0-63 (63-0 if SHL=1), check your datasheet, important for the orientation |
Geremia | 0:75ec1b3cde17 | 9 | #define LCDSIZE_X 192 // display X pixels, IST3020 is advertised as 224x65 but display size could be smaller |
Geremia | 0:75ec1b3cde17 | 10 | #define LCDSIZE_Y 64 // display Y pixels, the 65th is for accessing "icons" |
Geremia | 0:75ec1b3cde17 | 11 | |
Geremia | 0:75ec1b3cde17 | 12 | |
Geremia | 0:75ec1b3cde17 | 13 | |
Geremia | 0:75ec1b3cde17 | 14 | IST3020::IST3020(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char *name) |
Geremia | 0:75ec1b3cde17 | 15 | : LCD(displayproto, port, CS, reset, DC, WR, RD, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name) |
Geremia | 0:75ec1b3cde17 | 16 | { |
Geremia | 0:75ec1b3cde17 | 17 | hw_reset(); |
Geremia | 0:75ec1b3cde17 | 18 | BusEnable(true); |
Geremia | 0:75ec1b3cde17 | 19 | init(); |
Geremia | 0:75ec1b3cde17 | 20 | } |
Geremia | 0:75ec1b3cde17 | 21 | IST3020::IST3020(proto_t displayproto, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char *name) |
Geremia | 0:75ec1b3cde17 | 22 | : LCD(displayproto, mosi, miso, sclk, CS, reset, DC, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name) |
Geremia | 0:75ec1b3cde17 | 23 | { |
Geremia | 0:75ec1b3cde17 | 24 | hw_reset(); |
Geremia | 0:75ec1b3cde17 | 25 | init(); |
Geremia | 0:75ec1b3cde17 | 26 | } |
Geremia | 0:75ec1b3cde17 | 27 | // reset and init the lcd controller |
Geremia | 0:75ec1b3cde17 | 28 | void IST3020::init() |
Geremia | 0:75ec1b3cde17 | 29 | { |
Geremia | 0:75ec1b3cde17 | 30 | /* Start Initial Sequence ----------------------------------------------------*/ |
Geremia | 0:75ec1b3cde17 | 31 | |
Geremia | 0:75ec1b3cde17 | 32 | wr_cmd(0xE2); // sw reset |
Geremia | 0:75ec1b3cde17 | 33 | wait_ms(10); |
Geremia | 0:75ec1b3cde17 | 34 | |
Geremia | 0:75ec1b3cde17 | 35 | wr_cmd(0xAE); // display off |
Geremia | 0:75ec1b3cde17 | 36 | wr_cmd(0xAB); // built-in OSC on |
Geremia | 0:75ec1b3cde17 | 37 | wr_cmd(0xA2); // bias voltage (1/9) |
Geremia | 0:75ec1b3cde17 | 38 | // wr_cmd(0xA3); // bias voltage (1/7) |
Geremia | 0:75ec1b3cde17 | 39 | |
Geremia | 0:75ec1b3cde17 | 40 | wr_cmd(0xA0); // ADC select seg0-seg223 |
Geremia | 0:75ec1b3cde17 | 41 | //wr_cmd(0xA1); // ADC select seg223-seg0 |
Geremia | 0:75ec1b3cde17 | 42 | wr_cmd(0xC8); // SHL select com63-com0 |
Geremia | 0:75ec1b3cde17 | 43 | //wr_cmd(0xC0); // SHL select com0-com63 |
Geremia | 0:75ec1b3cde17 | 44 | |
Geremia | 0:75ec1b3cde17 | 45 | wr_cmd(0x2C); // Internal Voltage Converter ON |
Geremia | 0:75ec1b3cde17 | 46 | wait_ms(10); |
Geremia | 0:75ec1b3cde17 | 47 | wr_cmd(0x2E); // Internal Voltage Regulator ON |
Geremia | 0:75ec1b3cde17 | 48 | wait_ms(10); |
Geremia | 0:75ec1b3cde17 | 49 | wr_cmd(0x2F); // Internal Voltage Follower ON |
Geremia | 0:75ec1b3cde17 | 50 | wait_ms(10); |
Geremia | 0:75ec1b3cde17 | 51 | wr_cmd(0x20); // Regulor_Resistor_Select resistor ratio 20-27 20=4.5(default) 27=8.0, 0.5 steps |
Geremia | 0:75ec1b3cde17 | 52 | set_contrast(48); |
Geremia | 0:75ec1b3cde17 | 53 | //wr_cmd(0x81); // set contrast (reference voltage register set) |
Geremia | 0:75ec1b3cde17 | 54 | //wr_cmd(0x20); // contrast 00-3F default 20 |
Geremia | 0:75ec1b3cde17 | 55 | |
Geremia | 0:75ec1b3cde17 | 56 | wr_cmd(0xA4); // LCD display ram (EntireDisplayOn disable) |
Geremia | 0:75ec1b3cde17 | 57 | //wr_cmd(0x70); // External Capacitors Discharge function enable (should be enabled by default) |
Geremia | 0:75ec1b3cde17 | 58 | //wr_cmd(0x77); // External Capacitors Discharge function disable |
Geremia | 0:75ec1b3cde17 | 59 | wr_cmd(0x40); // start line = 0 |
Geremia | 0:75ec1b3cde17 | 60 | wr_cmd(0xA6); // display normal (1 = illuminated) |
Geremia | 0:75ec1b3cde17 | 61 | wr_cmd(0xAF); // display ON |
Geremia | 0:75ec1b3cde17 | 62 | |
Geremia | 0:75ec1b3cde17 | 63 | } |