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/SSD1306.cpp
- Revision:
- 37:5de028b08308
- Parent:
- 36:668396f861d2
--- a/Inits/SSD1306.cpp Sun Apr 22 21:41:24 2018 +0000 +++ b/Inits/SSD1306.cpp Wed Apr 25 20:55:59 2018 +0000 @@ -11,8 +11,8 @@ ///////////////////////////////////////////////////////////////////////// -#define IC_X_SEGS 132 // 132 SEG -#define IC_Y_COMS 64 // 64 COM +#define IC_X_SEGS 128 // UC1608 SEG has range 0-239 (239-0 if MX=1), check your datasheet, important for the orientation +#define IC_Y_COMS 64 // UC1608 COM has range 0-127 (127-0 if MY=1), check your datasheet, important for the orientation #define SSD1306_SETCONTRAST 0x81 #define SSD1306_DISPLAYALLON_RESUME 0xA4 @@ -58,9 +58,8 @@ } SSD1306::SSD1306(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, PinName reset, const char* name , unsigned int LCDSIZE_X, unsigned int LCDSIZE_Y) - : LCD(displayproto, Hz, address, sda, scl,reset, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name) + : LCD(displayproto, Hz, address, sda, scl, reset, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name) { - hw_reset(); init(); cls(); set_orientation(1); @@ -72,7 +71,7 @@ void SSD1306::init() { /* Start Initial Sequence ----------------------------------------------------*/ - /* SSD1306 + // wr_cmd8(0xE2); // sw reset wait_ms(15); @@ -115,61 +114,12 @@ wr_cmd8(SSD1306_INVERTDISPLAY); wr_cmd8(SSD1306_DISPLAYON); -*/ - -//SH1106 - wr_cmd8(0xAE);//--turn off oled panel - wr_cmd8(0x02);//---set low column address - wr_cmd8(0x10);//---set high column address - wr_cmd8(0x40);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F) - wr_cmd8(0x81);//--set contrast control register - wr_cmd8(0xA0);//--Set contrast - wr_cmd8(0xA8);//--set multiplex ratio(1 to 64) - wr_cmd8(0x3F);//--1/64 duty - wr_cmd8(0xD3);//-set display offset Shift Mapping RAM Counter (0x00~0x3F) - wr_cmd8(0x00);//-not offset - wr_cmd8(0xd5);//--set display clock divide ratio/oscillator frequency - wr_cmd8(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec - wr_cmd8(0xD9);//--set pre-charge period - wr_cmd8(0xF1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock - wr_cmd8(0xDA);//--set com pins hardware configuration - wr_cmd8(0x12); // or 0x02 - wr_cmd8(0xDB);//--set vcomh - wr_cmd8(0x40);//Set VCOM Deselect Level - //wr_cmd8(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02) // not on SH1106 - wr_cmd8(0xA4);// Disable Entire Display On (0xa4/0xa5) - wr_cmd8(0xA6);// Disable Inverse Display On (0xa6/a7) - - wr_cmd8(0xA1); // reverse order - //wr_cmd8(0xC0);//Set COM/Row Scan Direction - wr_cmd8(0xC8); //reverse direction - wr_cmd8(0xAF);//--turn on oled panel } //////////////////////////////////////////////////////////////////// // functions that overrides the standard ones implemented in LCD.cpp //////////////////////////////////////////////////////////////////// -void SSD1306::copy_to_lcd(void) -{ - - for(int page=0; page<8 /*_LCDPAGES */; page++) - { - wr_cmd8(0x02); // set column low nibble - wr_cmd8(0x10); // set column hi nibble - wr_cmd8(0xB0+page); // set page - wr_grambuf(buffer16+(page*screensize_X>>1), /*screensize_X*/ 128>>1); // send whole page pixels as shorts(16bit) not bytes! - } -} - -void SSD1306::cls(void) -{ - unsigned short tmp = _background^0xFFFF; - //memset(buffer,tmp,/*screensize_X*_LCDPAGES*/ 128*64/8); // clear display buffer - memset(buffer,0x00,screensize_X*(screensize_Y>>3)); // clear display buffer - copy_to_lcd(); -} - void SSD1306::mirrorXY(mirror_t mode) { switch (mode) @@ -196,18 +146,9 @@ wr_cmd16(0x8100|(o&0xFF)); } -void SSD1306::pixel(int x, int y, unsigned short color) -{ - // first check parameter - if((x >= screensize_X) || (y >= screensize_Y) || (x<0) || (y<0)) return; - - //Buffer[(Xpoint + (Ypoint / 8) * sOLED_DIS.OLED_Dis_Column)] |= 1 << (Ypoint % 8); - //Buffer[(Xpoint + (Ypoint / 8) * sOLED_DIS.OLED_Dis_Column)] |= 0 << (Ypoint % 8); - if (color) {buffer[x+((y>>3)*screensize_X)] |= 0 << (y % 8);} - else {buffer[x+((y>>3)*screensize_X)] |= 1 << (y % 8);} - - -} +//////////////////////////////////////////////////////////////////// +// functions that overrides the standard ones implemented in LCD.cpp +//////////////////////////////////////////////////////////////////// const uint8_t scroll_speed[8]={3,2,1,6,0,5,4,7};