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/
Revision 36:668396f861d2, committed 2018-04-22
- Comitter:
- charly
- Date:
- Sun Apr 22 21:41:24 2018 +0000
- Parent:
- 35:b8d3f1e68000
- Child:
- 37:5de028b08308
- Commit message:
- Added SH1106 for OLED Display 128x64 via IIC
Changed in this revision
--- a/Display/LCD.cpp Sun May 21 20:50:09 2017 +0000 +++ b/Display/LCD.cpp Sun Apr 22 21:41:24 2018 +0000 @@ -94,11 +94,11 @@ tftID=0; // locate(0,0); } -LCD::LCD(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char* name) +LCD::LCD(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, PinName reset, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char* name) : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y), _LCDPAGES(lcdsize_y>>3), _IC_X_SEGS(ic_x_segs), _IC_Y_COMS(ic_y_coms), _IC_PAGES(ic_y_coms>>3) { if(displayproto==I2C_){ - proto = new I2C_bus(Hz,address,sda,scl); + proto = new I2C_bus(Hz,address,sda,scl, reset); useNOP=false; } buffer = (unsigned char*) malloc (screensize_X*_LCDPAGES);
--- a/Display/LCD.h Sun May 21 20:50:09 2017 +0000 +++ b/Display/LCD.h Sun Apr 22 21:41:24 2018 +0000 @@ -55,7 +55,7 @@ /** Create a monochrome LCD I2C interface * @param name The name used by the parent class to access the interface */ - LCD(proto_t displayproto, int Hz, int address,PinName sda, PinName scl, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char* name); + LCD(proto_t displayproto, int Hz, int address,PinName sda, PinName scl, PinName reset, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char* name); /** Destructor @@ -237,7 +237,8 @@ int draw_mode; int contrast; -private: +//private: +protected: Protocols* proto; const int screensize_X; @@ -259,8 +260,7 @@ int win_y2; int orientation; bool useNOP; - -public: + unsigned char *buffer; unsigned short *buffer16; };
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Inits/SH1106.cpp Sun Apr 22 21:41:24 2018 +0000 @@ -0,0 +1,225 @@ +/* mbed UniGraphic library - Device specific class + * SH1106 by Karl Zweimüller + * SSD1306 by Copyright (c) 2015 Peter Drescher + * Released under the MIT License: http://mbed.org/license/mit + */ + +#include "Protocols.h" +#include "SH1106.h" + +////////////////////////////////////////////////////////////////////////////////// +// display settings /////////////////////////////////////////////////////// +///////////////////////////////////////////////////////////////////////// + + +#define IC_X_SEGS 132 // 132 SEG +#define IC_Y_COMS 64 // 64 COM + +#define SH1106_SETCONTRAST 0x81 +#define SH1106_DISPLAYALLON_RESUME 0xA4 +#define SH1106_DISPLAYALLON 0xA5 +#define SH1106_NORMALDISPLAY 0xA6 +#define SH1106_INVERTDISPLAY 0xA7 +#define SH1106_DISPLAYOFF 0xAE +#define SH1106_DISPLAYON 0xAF +#define SH1106_SETDISPLAYOFFSET 0xD3 +#define SH1106_SETCOMPINS 0xDA +#define SH1106_SETVCOMDETECT 0xDB +#define SH1106_SETDISPLAYCLOCKDIV 0xD5 +#define SH1106_SETPRECHARGE 0xD9 +#define SH1106_SETMULTIPLEX 0xA8 +#define SH1106_SETLOWCOLUMN 0x00 +#define SH1106_SETHIGHCOLUMN 0x10 +#define SH1106_SETSTARTLINE 0x40 +#define SH1106_MEMORYMODE 0x20 +#define SH1106_COMSCANINC 0xC0 +#define SH1106_COMSCANDEC 0xC8 +#define SH1106_SEGREMAP 0xA0 +#define SH1106_CHARGEPUMP 0x8D + +SH1106::SH1106(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); +} +SH1106::SH1106(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); +} + +SH1106::SH1106(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) +{ + hw_reset(); + init(); + cls(); + set_orientation(1); + locate(0,0); +} + + +// reset and init the lcd controller +void SH1106::init() +{ + /* Start Initial Sequence ----------------------------------------------------*/ + /* SH1106 + // wr_cmd8(0xE2); // sw reset + wait_ms(15); + + wr_cmd8(SH1106_DISPLAYOFF); // no problem in SPI_16 for single byte cmds + wr_cmd16((SH1106_SETDISPLAYCLOCKDIV<<8)|0x80); // wr_cmd16 for multibyte cmds issue in SPI16 mode + // wr_cmd8(0x80); // in SPI_16 it would become 0xE380 and will break things up + wr_cmd16((SH1106_SETMULTIPLEX<<8)|63); + // wr_cmd8(63); + + wr_cmd16((SH1106_SETDISPLAYOFFSET<<8)|0x00); + // wr_cmd8(0x0); + + wr_cmd8(SH1106_SETSTARTLINE | 0x0); // line #0 + + wr_cmd16((SH1106_CHARGEPUMP<<8)|0x14); + // wr_cmd8(0x14); // 0x10 + + wr_cmd16((SH1106_MEMORYMODE<<8)|0x00); + // wr_cmd8(0x00); // 0x0 act like ks0108 + + wr_cmd8(SH1106_SEGREMAP ); //| 0x1); + + wr_cmd8(SH1106_COMSCANDEC); + + wr_cmd16((SH1106_SETCOMPINS<<8)|0x12); + // wr_cmd8(0x12); // LCDSIZE_Y == 32 ? 0x02 : 0x12); + + wr_cmd16((SH1106_SETCONTRAST<<8)|0xCF); + // wr_cmd8(0xCF); // _rawHeight == 32 ? 0x8F : ((vccstate == SH1106_EXTERNALVCC) ? 0x9F : 0xCF) ); + + wr_cmd16((SH1106_SETPRECHARGE<<8)|0xF1); + // wr_cmd8(0xF1); // : 0x22); + + wr_cmd16((SH1106_SETVCOMDETECT<<8)|0x40); + // wr_cmd8(0x40); + + wr_cmd8(SH1106_DISPLAYALLON_RESUME); + + //wr_cmd8(SH1106_NORMALDISPLAY); + wr_cmd8(SH1106_INVERTDISPLAY); + + wr_cmd8(SH1106_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 SH1106::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>>1); // send whole page pixels as shorts(16bit) not bytes! + } +} + +void SH1106::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 SH1106::mirrorXY(mirror_t mode) +{ + switch (mode) { + case(NONE): + wr_cmd16(0xA0C0); + break; + case(X): + wr_cmd16(0xA1C0); + break; + case(Y): + wr_cmd16(0xA0C8); + break; + case(XY): + wr_cmd16(0xA1C8); + break; + } +} + +void SH1106::set_contrast(int o) +{ + contrast = o; + + wr_cmd16(0x8100|(o&0xFF)); +} + +void SH1106::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); + } + + +} + + +unsigned short SH1106::pixelread(int x, int y) +{ + // first check parameter + if((x >= screensize_X) || (y >= screensize_Y) || (x<0) || (y<0)) return 0; + + //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 (buffer[x+((y>>3)*screensize_X)] & 1 << (y % 8) == 0) + return 0xFFFF ; // pixel not set, White + else return 0; // pixel set, Black +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Inits/SH1106.h Sun Apr 22 21:41:24 2018 +0000 @@ -0,0 +1,109 @@ +#ifndef MBED_SH1106_H +#define MBED_SH1106_H + +#include "mbed.h" +#include "LCD.h" + +/** Class for SH1106 display controller +* to be copypasted and adapted for other controllers +*/ +class SH1106 : public LCD +{ + +public: + + /** Create a PAR display interface + * @param displayproto only supports PAR_8 + * @param port GPIO port name to use + * @param CS pin connected to CS of display + * @param reset pin connected to RESET of display + * @param DC pin connected to data/command of display + * @param WR pin connected to SDI of display + * @param RD pin connected to RS of display + * @param name The name used by the parent class to access the interface + * @param LCDSIZE_X x size in pixel - optional + * @param LCDSIZE_Y y size in pixel - optional + */ + SH1106(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char* name, unsigned int LCDSIZE_X = 128, unsigned int LCDSIZE_Y = 64); + + /** Create an SPI display interface + * @param displayproto SPI_8 or SPI_16 + * @param Hz SPI speed in Hz + * @param mosi SPI pin + * @param miso SPI pin + * @param sclk SPI pin + * @param CS pin connected to CS of display + * @param reset pin connected to RESET of display + * @param DC pin connected to data/command of display + * @param name The name used by the parent class to access the interface + * @param LCDSIZE_X x size in pixel - optional + * @param LCDSIZE_Y y size in pixel - optional + */ + SH1106(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char* name , unsigned int LCDSIZE_X = 128, unsigned int LCDSIZE_Y = 64); + + /** Create an I2C display interface + * @param displayproto I2C_ + * @param Hz I2C speed in Hz + * @param address I2C address + * @param sda I2C pin + * @param scl I2C pin + * @param reset pin connected to RESET of display + * @param name The name used by the parent class to access the interface + * @param LCDSIZE_X x size in pixel - optional + * @param LCDSIZE_Y y size in pixel - optional + */ + SH1106(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, PinName reset, const char* name , unsigned int LCDSIZE_X = 128, unsigned int LCDSIZE_Y = 64); + + + + /** set the contrast of the screen + * @note here overrided because of not standard value range + * @param o contrast 0-255 + */ + virtual void set_contrast(int o); + + /** set automatc horizontal scroll mode + * @param l_r direction - left = 0, right = 1 + * @param s_page start page + * @param e_page end page + * @param speed time between horizontal shift. 0 slow .. 7 fast + */ + + /** Framebuffer is used, it needs to be sent to LCD from time to time + */ + virtual void copy_to_lcd(); + + /** clear the entire screen + */ + virtual void cls(); + + /** Draw a pixel in the specified color. + * @param x is the horizontal offset to this pixel. + * @param y is the vertical offset to this pixel. + * @param color defines the color for the pixel. + */ + virtual void pixel(int x, int y, unsigned short color); + + /** Read pixel color at location + * @param x is the horizontal offset to this pixel. + * @param y is the vertical offset to this pixel. + * @returns 16bit color, 0000=Black(pixel set), FFFF=White(pixel clear). + */ + virtual unsigned short pixelread(int x, int y); +protected: + + + /** Init command sequence + */ + void init(); + + /** set mirror mode + * @note here overriding the LCD class default one because of not standard commands + * @param mode NONE, X, Y, XY + */ + virtual void mirrorXY(mirror_t mode); + +}; + + +#endif \ No newline at end of file
--- a/Inits/SSD1306.cpp Sun May 21 20:50:09 2017 +0000 +++ b/Inits/SSD1306.cpp Sun Apr 22 21:41:24 2018 +0000 @@ -11,8 +11,8 @@ ///////////////////////////////////////////////////////////////////////// -#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 IC_X_SEGS 132 // 132 SEG +#define IC_Y_COMS 64 // 64 COM #define SSD1306_SETCONTRAST 0x81 #define SSD1306_DISPLAYALLON_RESUME 0xA4 @@ -57,9 +57,10 @@ locate(0,0); } -SSD1306::SSD1306(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, const char* name , unsigned int LCDSIZE_X, unsigned int LCDSIZE_Y) - : LCD(displayproto, Hz, address, sda, scl, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name) +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) { + hw_reset(); init(); cls(); set_orientation(1); @@ -71,7 +72,7 @@ void SSD1306::init() { /* Start Initial Sequence ----------------------------------------------------*/ - + /* SSD1306 // wr_cmd8(0xE2); // sw reset wait_ms(15); @@ -114,12 +115,61 @@ 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) @@ -146,9 +196,18 @@ wr_cmd16(0x8100|(o&0xFF)); } -//////////////////////////////////////////////////////////////////// -// functions that overrides the standard ones implemented in LCD.cpp -//////////////////////////////////////////////////////////////////// +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);} + + +} const uint8_t scroll_speed[8]={3,2,1,6,0,5,4,7};
--- a/Inits/SSD1306.h Sun May 21 20:50:09 2017 +0000 +++ b/Inits/SSD1306.h Sun Apr 22 21:41:24 2018 +0000 @@ -47,11 +47,12 @@ * @param address I2C address * @param sda I2C pin * @param scl I2C pin + * @param reset pin connected to RESET of display * @param name The name used by the parent class to access the interface * @param LCDSIZE_X x size in pixel - optional * @param LCDSIZE_Y y size in pixel - optional */ - SSD1306(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, const char* name , unsigned int LCDSIZE_X = 128, unsigned int LCDSIZE_Y = 64); + SSD1306(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, PinName reset, const char* name , unsigned int LCDSIZE_X = 128, unsigned int LCDSIZE_Y = 64); @@ -67,6 +68,22 @@ * @param e_page end page * @param speed time between horizontal shift. 0 slow .. 7 fast */ + + /** Framebuffer is used, it needs to be sent to LCD from time to time + */ + virtual void copy_to_lcd(); + + /** clear the entire screen + */ + virtual void cls(); + + /** Draw a pixel in the specified color. + * @param x is the horizontal offset to this pixel. + * @param y is the vertical offset to this pixel. + * @param color defines the color for the pixel. + */ + virtual void pixel(int x, int y, unsigned short color); + void horizontal_scroll(int l_r,int s_page,int e_page,int speed); /** automatic horizontal + vertical scroll mode
--- a/Protocols/I2C_bus.cpp Sun May 21 20:50:09 2017 +0000 +++ b/Protocols/I2C_bus.cpp Sun Apr 22 21:41:24 2018 +0000 @@ -13,12 +13,13 @@ #include "I2C_bus.h" -I2C_bus::I2C_bus(int Hz, int address, PinName sda, PinName scl) - : _i2c(sda,scl) +I2C_bus::I2C_bus(int Hz, int address, PinName sda, PinName scl, PinName reset) + : _i2c(sda,scl), _reset(reset) { _i2c.frequency(Hz); _address = address; - //hw_reset(); + _reset = 1; + hw_reset(); } void I2C_bus::wr_cmd8(unsigned char cmd) @@ -30,7 +31,10 @@ } void I2C_bus::wr_data8(unsigned char data) { - _i2c.write(data); // write 8bit + char tmp[2]; + tmp[0] = 0x40; //data mode + tmp[1] = data; + _i2c.write(_address,tmp,2); // write } void I2C_bus::wr_cmd16(unsigned short cmd) { @@ -83,8 +87,9 @@ _i2c.write(0x40); // data continue while(lenght) { - _i2c.write((*data)>>8); // write 8bit - _i2c.write((*data)&0xFF); // write 8bit + //_i2c.write((*data)>>8); // write high 8bit + _i2c.write((*data)&0xFF); // write low 8bit + _i2c.write((*data)>>8); // write high 8bit data++; lenght--; } @@ -93,7 +98,11 @@ void I2C_bus::hw_reset() { - + wait_ms(15); + _reset = 0; // display reset + wait_ms(2); + _reset = 1; // end reset + wait_ms(100); } void I2C_bus::BusEnable(bool enable) {
--- a/Protocols/I2C_bus.h Sun May 21 20:50:09 2017 +0000 +++ b/Protocols/I2C_bus.h Sun Apr 22 21:41:24 2018 +0000 @@ -16,8 +16,9 @@ * @param I2C address * @param I2C pin sda * @param I2C pin scl + * @param reset pin connected to RESET of display */ - I2C_bus(int Hz, int address,PinName sda, PinName scl); + I2C_bus(int Hz, int address,PinName sda, PinName scl, PinName reset=NC); protected: @@ -132,6 +133,7 @@ I2C _i2c; int _address; + DigitalOut _reset; };