Forked from Neal Horman: Adafruit_GFX, a derived version of the BSD licensed Adafrut GFX library for the SSD1306 controller for an OLED 128x32 or 128x64 display using SPI or I2C. Now it is adopted also for the SH1106 I2C 128x64 display as well...
Dependents: Lab06_oled_i2c Lab06_BME280_oled Lab06_oled_clock I2C_SSD1306andSH1106_nucleo_F446RE
Diff: Adafruit_SSD1306.h
- Revision:
- 9:ddb97c9850a2
- Parent:
- 8:416b8fe451b3
- Child:
- 10:d5aee2d2f8dd
- Child:
- 11:86909e6db3c8
diff -r 416b8fe451b3 -r ddb97c9850a2 Adafruit_SSD1306.h --- a/Adafruit_SSD1306.h Sun Oct 19 04:45:11 2014 +0000 +++ b/Adafruit_SSD1306.h Sun Oct 19 20:55:27 2014 +0000 @@ -17,7 +17,7 @@ *********************************************************************/ /* - * Modified by Neal Horman 7/14/2012 for use in LPC1768 + * Modified by Neal Horman 7/14/2012 for use in mbed */ #ifndef _ADAFRUIT_SSD1306_H_ @@ -26,120 +26,147 @@ #include "mbed.h" #include "Adafruit_GFX.h" -/*========================================================================= - SSD1306 Displays - ----------------------------------------------------------------------- - The driver is used in multiple displays (128x64, 128x32, etc.). - Select the appropriate display below to create an appropriately - sized framebuffer, etc. - - SSD1306_128_64 128x64 pixel display - - SSD1306_128_32 128x32 pixel display - - You also need to set the LCDWIDTH and LCDHEIGHT defines to an - appropriate size - - -----------------------------------------------------------------------*/ -//#define SSD1306_128_64 -#define SSD1306_128_32 - -#define SSD_USES_SPI -//#define SSD_USES_I2C -/*=========================================================================*/ - -#if defined SSD1306_128_64 && defined SSD1306_128_32 - #error "Only one SSD1306 display can be specified at once in SSD1306.h" -#endif -#if !defined SSD1306_128_64 && !defined SSD1306_128_32 - #error "At least one SSD1306 display must be specified in SSD1306.h" -#endif +#include <vector> +#include <algorithm> -#if defined SSD1306_128_64 - #define SSD1306_LCDWIDTH 128 - #define SSD1306_LCDHEIGHT 64 -#endif -#if defined SSD1306_128_32 - #define SSD1306_LCDWIDTH 128 - #define SSD1306_LCDHEIGHT 32 -#endif - -#if defined SSD_USES_SPI && defined SSD_USES_I2C - #error "Only one communication mode can be specified at once in SSD1306.h" -#endif -#if !defined SSD_USES_SPI && !defined SSD_USES_I2C - #error "At least one communication mode must be specified in SSD1306.h" -#endif - -//#define WITHOUT_SPLASH -#define SSD_I2C_ADDRESS 0x78 - -#define SSD_Command_Mode 0x00 -#define SSD_Data_Mode 0x40 +// A DigitalOut sub-class that provides a constructed default state +class DigitalOut2 : public DigitalOut +{ +public: + DigitalOut2(PinName pin, bool active = false) : DigitalOut(pin) { write(active); }; + DigitalOut2& operator= (int value) { write(value); return *this; }; + DigitalOut2& operator= (DigitalOut2& rhs) { write(rhs.read()); return *this; }; + operator int() { return read(); }; +}; -#define SSD1306_SETCONTRAST 0x81 -#define SSD1306_DISPLAYALLON_RESUME 0xA4 -#define SSD1306_DISPLAYALLON 0xA5 -#define SSD1306_NORMALDISPLAY 0xA6 -#define SSD1306_INVERTDISPLAY 0xA7 -#define SSD1306_DISPLAYOFF 0xAE -#define SSD1306_DISPLAYON 0xAF -#define SSD1306_SETDISPLAYOFFSET 0xD3 -#define SSD1306_SETCOMPINS 0xDA -#define SSD1306_SETVCOMDETECT 0xDB -#define SSD1306_SETDISPLAYCLOCKDIV 0xD5 -#define SSD1306_SETPRECHARGE 0xD9 -#define SSD1306_SETMULTIPLEX 0xA8 -#define SSD1306_SETLOWCOLUMN 0x00 -#define SSD1306_SETHIGHCOLUMN 0x10 -#define SSD1306_SETSTARTLINE 0x40 -#define SSD1306_MEMORYMODE 0x20 -#define SSD1306_COMSCANINC 0xC0 -#define SSD1306_COMSCANDEC 0xC8 -#define SSD1306_SEGREMAP 0xA0 -#define SSD1306_CHARGEPUMP 0x8D #define SSD1306_EXTERNALVCC 0x1 #define SSD1306_SWITCHCAPVCC 0x2 -// an DigitalOut sub-class that provides a constructed default state -class DigitalOut2 : public DigitalOut -{ -public: - DigitalOut2(PinName pin, bool active = false) : DigitalOut(pin) { write(active); }; - DigitalOut2& operator= (int value) { write(value); return *this; }; - DigitalOut2& operator= (DigitalOut2& rhs) { write(rhs.read()); return *this; }; - operator int() { return read(); }; -}; - class Adafruit_SSD1306 : public Adafruit_GFX { - public: -#ifdef SSD_USES_SPI - Adafruit_SSD1306(SPI &spi, PinName DC, PinName RST, PinName CS); -#elif defined SSD_USES_I2C - Adafruit_SSD1306(I2C &i2c, PinName RST); -#endif - void begin(uint8_t switchvcc = SSD1306_SWITCHCAPVCC); - void ssd1306_command(uint8_t c); - void ssd1306_data(uint8_t c); +public: + Adafruit_SSD1306(PinName RST, uint8_t rawHeight = 32, uint8_t rawWidth = 128) + : Adafruit_GFX(rawWidth,rawHeight) + , rst(RST,false) + {}; + + void begin(uint8_t switchvcc = SSD1306_SWITCHCAPVCC); + virtual void command(uint8_t c) = 0; + virtual void data(uint8_t c) = 0; - void clearDisplay(void); - virtual void invertDisplay(bool i); - void display(); + void clearDisplay(void); + virtual void invertDisplay(bool i); + void display(); + virtual void splash(); + + virtual void drawPixel(int16_t x, int16_t y, uint16_t color); - virtual void drawPixel(int16_t x, int16_t y, uint16_t color); - -private: - - DigitalOut2 rst; -#ifdef SSD_USES_SPI - DigitalOut2 cs,dc; - SPI &mspi; -#elif defined SSD_USES_I2C - I2C &mi2c; -#endif - // the memory buffer for the LCD - uint8_t buffer[SSD1306_LCDHEIGHT * SSD1306_LCDWIDTH / 8]; +protected: + virtual void sendDisplayBuffer() = 0; + DigitalOut2 rst; + + // the memory buffer for the LCD + std::vector<uint8_t> buffer; +}; + +class Adafruit_SSD1306_Spi : public Adafruit_SSD1306 +{ +public: + Adafruit_SSD1306_Spi(SPI &spi, PinName DC, PinName RST, PinName CS, uint8_t rawHieght = 32, uint8_t rawWidth = 128) + : Adafruit_SSD1306(RST, rawHieght, rawWidth) + , cs(CS,true) + , dc(DC,false) + , mspi(spi) + { + begin(); + splash(); + display(); + }; + + virtual void command(uint8_t c) + { + cs = 1; + dc = 0; + cs = 0; + mspi.write(c); + cs = 1; + }; + + virtual void data(uint8_t c) + { + cs = 1; + dc = 1; + cs = 0; + mspi.write(c); + cs = 1; + }; + +protected: + virtual void sendDisplayBuffer() + { + cs = 1; + dc = 1; + cs = 0; + + for(uint16_t i=0, q=buffer.size(); i<q; i++) + mspi.write(buffer[i]); + + cs = 1; + }; + + DigitalOut2 cs, dc; + SPI &mspi; +}; + +class Adafruit_SSD1306_I2c : public Adafruit_SSD1306 +{ +public: + #define SSD_I2C_ADDRESS 0x78 + Adafruit_SSD1306_I2c(I2C &i2c, PinName RST, uint8_t i2cAddress = SSD_I2C_ADDRESS, uint8_t rawHeight = 32, uint8_t rawWidth = 128) + : Adafruit_SSD1306(RST, rawHeight, rawWidth) + , mi2c(i2c) + , mi2cAddress(i2cAddress) + { + begin(); + splash(); + display(); + }; + + virtual void command(uint8_t c) + { + char buff[2]; + buff[0] = 0; // Command Mode + buff[1] = c; + mi2c.write(mi2cAddress, buff, sizeof(buff)); + } + + virtual void data(uint8_t c) + { + char buff[2]; + buff[0] = 0x40; // Data Mode + buff[1] = c; + mi2c.write(mi2cAddress, buff, sizeof(buff)); + }; + +protected: + virtual void sendDisplayBuffer() + { + char buff[17]; + buff[0] = 0x40; // Data Mode + + // send display buffer in 16 byte chunks + for(uint16_t i=0, q=buffer.size(); i<q; i+=16 ) + { uint8_t x ; + + // TODO - this will segfault if buffer.size() % 16 != 0 + for(x=1; x<sizeof(buff); x++) + buff[x] = buffer[i+x]; + mi2c.write(mi2cAddress, buff, sizeof(buff)); + } + }; + + I2C &mi2c; + uint8_t mi2cAddress; }; #endif \ No newline at end of file