i2c version has an offset due to wrong copy of temp buffer to display buffer, fixed in Adafruit_SSD1306.h
Dependents: ezSBC_MPU9250 Test_OLED_Display untodoenuno OledI2CDisplay ... more
Fork of Adafruit_GFX by
Diff: Adafruit_SSD1306.h
- Revision:
- 21:ef35019b9b50
- Parent:
- 18:6aa925f254d6
--- a/Adafruit_SSD1306.h Sun Nov 06 15:31:50 2016 +0000 +++ b/Adafruit_SSD1306.h Mon Jul 24 21:30:02 2017 +0200 @@ -1,212 +1,133 @@ -/********************************************************************* -This is a library for our Monochrome OLEDs based on SSD1306 drivers - - Pick one up today in the adafruit shop! - ------> http://www.adafruit.com/category/63_98 - -These displays use SPI to communicate, 4 or 5 pins are required to -interface - -Adafruit invests time and resources providing this open source code, -please support Adafruit and open-source hardware by purchasing -products from Adafruit! - -Written by Limor Fried/Ladyada for Adafruit Industries. -BSD license, check license.txt for more information -All text above, and the splash screen must be included in any redistribution -*********************************************************************/ - -/* - * Modified by Neal Horman 7/14/2012 for use in mbed - */ - -#ifndef _ADAFRUIT_SSD1306_H_ -#define _ADAFRUIT_SSD1306_H_ - -#include "mbed.h" -#include "Adafruit_GFX.h" - -#include <vector> -#include <algorithm> - -#define SSD1306_EXTERNALVCC 0x1 -#define SSD1306_SWITCHCAPVCC 0x2 - -/** The pure base class for the SSD1306 display driver. - * - * You should derive from this for a new transport interface type, - * such as the SPI and I2C drivers. - */ -class Adafruit_SSD1306 : public Adafruit_GFX -{ -public: - Adafruit_SSD1306(PinName RST, uint8_t rawHeight = 32, uint8_t rawWidth = 128, bool _flipVertical=false) - : Adafruit_GFX(rawWidth,rawHeight) - , rst(RST,false) - , flipVertical(_flipVertical) - { - buffer.resize(rawHeight * rawWidth / 8); - }; - - void begin(uint8_t switchvcc = SSD1306_SWITCHCAPVCC); - - // These must be implemented in the derived transport driver - virtual void command(uint8_t c) = 0; - virtual void data(uint8_t c) = 0; - virtual void drawPixel(int16_t x, int16_t y, uint16_t color); - - /// Clear the display buffer - void clearDisplay(void); - virtual void invertDisplay(bool i); - - /// Cause the display to be updated with the buffer content. - void display(); - /// Fill the buffer with the AdaFruit splash screen. - virtual void splash(); - -protected: - virtual void sendDisplayBuffer() = 0; - DigitalOut rst; - bool flipVertical; - - // the memory buffer for the LCD - std::vector<uint8_t> buffer; -}; - - -/** This is the SPI SSD1306 display driver transport class - * - */ -class Adafruit_SSD1306_Spi : public Adafruit_SSD1306 -{ -public: - /** Create a SSD1306 SPI transport display driver instance with the specified DC, RST, and CS pins, as well as the display dimentions - * - * Required parameters - * @param spi - a reference to an initialized SPI object - * @param DC (Data/Command) pin name - * @param RST (Reset) pin name - * @param CS (Chip Select) pin name - * - * Optional parameters - * @param rawHeight - the vertical number of pixels for the display, defaults to 32 - * @param rawWidth - the horizonal number of pixels for the display, defaults to 128 - */ - Adafruit_SSD1306_Spi(SPI &spi, PinName DC, PinName RST, PinName CS, uint8_t rawHieght = 32, uint8_t rawWidth = 128, bool flipVertical = false) - : Adafruit_SSD1306(RST, rawHieght, rawWidth, flipVertical) - , 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]); - - if(height() == 32) - { - for(uint16_t i=0, q=buffer.size(); i<q; i++) - mspi.write(0); - } - - cs = 1; - }; - - DigitalOut cs, dc; - SPI &mspi; -}; - -/** This is the I2C SSD1306 display driver transport class - * - */ -class Adafruit_SSD1306_I2c : public Adafruit_SSD1306 -{ -public: - #define SSD_I2C_ADDRESS 0x78 - /** Create a SSD1306 I2C transport display driver instance with the specified RST pin name, the I2C address, as well as the display dimensions - * - * Required parameters - * @param i2c - A reference to an initialized I2C object - * @param RST - The Reset pin name - * - * Optional parameters - * @param i2cAddress - The i2c address of the display - * @param rawHeight - The vertical number of pixels for the display, defaults to 32 - * @param rawWidth - The horizonal number of pixels for the display, defaults to 128 - */ - Adafruit_SSD1306_I2c(I2C &i2c, PinName RST, uint8_t i2cAddress = SSD_I2C_ADDRESS, uint8_t rawHeight = 32, uint8_t rawWidth = 128, bool flipVertical = false) - : Adafruit_SSD1306(RST, rawHeight, rawWidth, flipVertical) - , 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-1]; - mi2c.write(mi2cAddress, buff, sizeof(buff)); - } - }; - - I2C &mi2c; - uint8_t mi2cAddress; -}; - -#endif \ No newline at end of file +/********************************************************************* +This is a library for our Monochrome OLEDs based on SSD1306 drivers + + Pick one up today in the adafruit shop! + ------> http://www.adafruit.com/category/63_98 + +These displays use SPI to communicate, 4 or 5 pins are required to +interface + +Adafruit invests time and resources providing this open source code, +please support Adafruit and open-source hardware by purchasing +products from Adafruit! + +Written by Limor Fried/Ladyada for Adafruit Industries. +BSD license, check license.txt for more information +All text above, and the splash screen must be included in any redistribution +*********************************************************************/ + +/* + * Modified by Neal Horman 7/14/2012 for use in mbed + */ + +#ifndef _ADAFRUIT_SSD1306_H_ +#define _ADAFRUIT_SSD1306_H_ + +#include "mbed.h" +#include "Adafruit_GFX.h" + +#include <vector> +#include <algorithm> + +#define SSD1306_EXTERNALVCC 0x1 +#define SSD1306_SWITCHCAPVCC 0x2 + +/** The pure base class for the SSD1306 display driver. + * + * You should derive from this for a new transport interface type, + * such as the SPI and I2C drivers. + */ +class Adafruit_SSD1306 : public Adafruit_GFX +{ +public: + Adafruit_SSD1306(PinName reset, uint8_t rawHeight = 32, uint8_t rawWidth = 128, bool flipVertical=false); + + // start display sequence + void begin(uint8_t switchvcc = SSD1306_SWITCHCAPVCC); + + // These must be implemented in the derived transport driver + virtual void command(uint8_t c) = 0; + virtual void data(uint8_t c) = 0; + virtual void drawPixel(int16_t x, int16_t y, uint16_t color); + + /// Clear the display buffer + void clearDisplay(void); + virtual void invertDisplay(bool i); + void flipVertical(bool flip); + + /// Cause the display to be updated with the buffer content. + void display(); + /// Fill the buffer with the AdaFruit splash screen. + virtual void splash(); + +protected: + virtual void sendDisplayBuffer() = 0; + DigitalOut _reset; + bool _flipVertical; + + // the memory buffer for the LCD + std::vector<uint8_t> buffer; +}; + + +/** This is the SPI SSD1306 display driver transport class + * + */ +class Adafruit_SSD1306_Spi : public Adafruit_SSD1306 +{ +public: + /** Create a SSD1306 SPI transport display driver instance with the specified DC, RST, and CS pins, as well as the display dimentions + * + * Required parameters + * @param spi - a reference to an initialized SPI object + * @param DC (Data/Command) pin name + * @param RST (Reset) pin name + * @param CS (Chip Select) pin name + * + * Optional parameters + * @param rawHeight - the vertical number of pixels for the display, defaults to 32 + * @param rawWidth - the horizonal number of pixels for the display, defaults to 128 + */ + Adafruit_SSD1306_Spi(SPI &spi, PinName DC, PinName RST, PinName CS, uint8_t rawHieght = 32, uint8_t rawWidth = 128, bool flipVertical = false); + + virtual void command(uint8_t c); + virtual void data(uint8_t c); + +protected: + virtual void sendDisplayBuffer(); + + DigitalOut cs, dc; + SPI &mspi; +}; + +/** This is the I2C SSD1306 display driver transport class + * + */ +class Adafruit_SSD1306_I2c : public Adafruit_SSD1306 +{ +public: + #define SSD_I2C_ADDRESS 0x78 + /** Create a SSD1306 I2C transport display driver instance with the specified RST pin name, the I2C address, as well as the display dimensions + * + * Required parameters + * @param i2c - A reference to an initialized I2C object + * @param RST - The Reset pin name + * + * Optional parameters + * @param i2cAddress - The i2c address of the display + * @param rawHeight - The vertical number of pixels for the display, defaults to 32 + * @param rawWidth - The horizonal number of pixels for the display, defaults to 128 + */ + Adafruit_SSD1306_I2c(I2C &i2c, PinName RST, uint8_t i2cAddress = SSD_I2C_ADDRESS, uint8_t rawHeight = 32, uint8_t rawWidth = 128, bool flipVertical = false); + + virtual void command(uint8_t c); + virtual void data(uint8_t c); + +protected: + virtual void sendDisplayBuffer(); + + I2C &mi2c; + uint8_t mi2cAddress; +}; + +#endif