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/ST7565.cpp
- Committer:
- Geremia
- Date:
- 2015-03-31
- Revision:
- 21:ae0a4eedfc90
- Parent:
- 18:ffa58f1a680a
File content as of revision 21:ae0a4eedfc90:
/* mbed UniGraphic library - Device specific class * Copyright (c) 2015 Giuliano Dianda * Released under the MIT License: http://mbed.org/license/mit */ #include "Protocols.h" #include "ST7565.h" /*this is a quite standard config for ST7565 and similars, like UC1701*/ ////////////////////////////////////////////////////////////////////////////////// // display settings /////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////// #define IC_X_SEGS 132 // ST7565 SEG has range 0-131 (131-0 if ADC=1), check your datasheet, important for the orientation #define IC_Y_COMS 64 // ST7565 COM has range 0-63 (63-0 if SHL=1), check your datasheet, important for the orientation // put in constructor //#define LCDSIZE_X 128 // display X pixels, ST7565 is advertised as 132x65 but display size could be smaller //#define LCDSIZE_Y 64 // display Y pixels, the 65th is for accessing "icons" ST7565::ST7565(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char *name, unsigned int LCDSIZE_X, unsigned int LCDSIZE_Y) : 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); } ST7565::ST7565(proto_t displayproto, PinName* buspins, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char *name, unsigned int LCDSIZE_X, unsigned int LCDSIZE_Y) : LCD(displayproto, buspins, 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); } ST7565::ST7565(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char *name, unsigned int LCDSIZE_X, unsigned int LCDSIZE_Y) : LCD(displayproto, Hz, 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 // init sequence is manufacturer specific void ST7565::init() { /* Start Initial Sequence ----------------------------------------------------*/ wr_cmd8(0xE2); // sw reset wait_ms(10); wr_cmd8(0xAE); // display off wr_cmd8(0xA2); // bias voltage (1/9) // wr_cmd8(0xA3); // bias voltage (1/7) //wr_cmd8(0xA0); // ADC select seg0-seg131 wr_cmd8(0xA1); // ADC select seg223-seg0 //wr_cmd8(0xC8); // SHL select com63-com0 wr_cmd8(0xC0); // SHL select com0-com63 wr_cmd8(0x2C); // Boost ON wait_ms(10); wr_cmd8(0x2E); // Voltage Regulator ON wait_ms(10); wr_cmd8(0x2F); // Voltage Follower ON wait_ms(10); wr_cmd8(0x20|0x05); // Regulor_Resistor_Select resistor ratio 20-27, look at your display specific init code set_contrast(0x20); //wr_cmd8(0x81); // set contrast (reference voltage register set) //wr_cmd8(0x15); // contrast 00-3F wr_cmd8(0xA4); // LCD display ram (EntireDisplayOn disable) wr_cmd8(0x40); // start line = 0 wr_cmd8(0xA6); // display normal (1 = illuminated) wr_cmd8(0xAF); // display ON }