A simple yet powerful library for controlling graphical displays. Multiple display controllers are supported using inheritance.
Dependents: mbed_rifletool Hexi_Bubble_Game Hexi_Catch-the-dot_Game Hexi_Acceleromagnetic_Synth
NOTE: This library is in beta right now. As far as I know, everything here works, but there are many features that are lacking so far. Most notably containers, button handling, and display drivers other than the SSD1306.
Drivers/SSD1306_I2C.h
- Committer:
- neilt6
- Date:
- 2014-03-14
- Revision:
- 1:f7003ec66a51
- Child:
- 2:bbfc18022ee5
File content as of revision 1:f7003ec66a51:
/* NeatGUI Library * Copyright (c) 2013 Neil Thiessen * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef SSD1306_I2C_H #define SSD1306_I2C_H #include "mbed.h" #include "Display.h" /** SSD1306_I2C class. * Used for controlling an SSD1306-based OLED display connected to i2c. */ class SSD1306_I2C : public Display { public: /** Represents the different I2C address possibilities for the SSD1306 */ enum Address { ADDRESS_0 = (0x3C << 1), /**< SA0 pin = 0 */ ADDRESS_1 = (0x3D << 1), /**< SA0 pin = 1 */ }; /** Create an SSD1306 object connected to the specified I2C pins with the specified I2C slave address * * @param sda The I2C data pin. * @param scl The I2C clock pin. * @param addr The I2C slave address. */ SSD1306_I2C(PinName sda, PinName scl, Address addr); /** Create an SSD1306 object connected to the specified SPI pins with the specified /CS and DC pins * * @param mosi The SPI data out pin. * @param miso The SPI data in pin. * @param sclk The SPI clock pin. * @param sclk The SPI chip select pin. * @param sclk The data/command pin. */ //SSD1306_SPI(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName dc); /** Probe for the SSD1306 and initialize it if present * * @returns * 'true' if the device exists on the bus, * 'false' if the device doesn't exist on the bus. */ virtual bool open(); /** Send the buffer to the SSD1306 */ virtual void finalize(); /** Get the current state of the SSD1306 * * @returns The current state as a Display::State enum. */ virtual Display::State state(); /** Set the state of the SSD1306 * * @param mode The new state as a Display::State enum. */ virtual void state(State s); //void display(); /** Draw a single pixel at the specified coordinates * * @param x The X coordinate. * @param y The Y coordinate. * @param c The color of the pixel as a 32-bit ARGB value. */ virtual void drawPixel(int x, int y, unsigned int c); private: //Commands enum Command { CMD_SETCONTRAST = 0x81, CMD_DISPLAYALLON_RESUME = 0xA4, CMD_DISPLAYALLON = 0xA5, CMD_NORMALDISPLAY = 0xA6, CMD_INVERTDISPLAY = 0xA7, CMD_DISPLAYOFF = 0xAE, CMD_DISPLAYON = 0xAF, CMD_SETDISPLAYOFFSET = 0xD3, CMD_SETCOMPINS = 0xDA, CMD_SETVCOMDETECT = 0xDB, CMD_SETDISPLAYCLOCKDIV = 0xD5, CMD_SETPRECHARGE = 0xD9, CMD_SETMULTIPLEX = 0xA8, CMD_SETLOWCOLUMN = 0x00, CMD_SETHIGHCOLUMN = 0x10, CMD_SETSTARTLINE = 0x40, CMD_MEMORYMODE = 0x20, CMD_COMSCANINC = 0xC0, CMD_COMSCANDEC = 0xC8, CMD_SEGREMAP = 0xA0, CMD_CHARGEPUMP = 0x8D, CMD_CHARGEPUMPON = 0x14, CMD_CHARGEPUMPOFF = 0x10, CMD_ACTIVATE_SCROLL = 0x2F, CMD_DEACTIVATE_SCROLL = 0x2E, CMD_SET_VERTICAL_SCROLL_AREA = 0xA3, CMD_RIGHT_HORIZONTAL_SCROLL = 0x26, CMD_LEFT_HORIZONTAL_SCROLL = 0x27, CMD_VERTICAL_AND_RIGHT_HORIZONTAL_SCROLL = 0x29, CMD_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL = 0x2A }; //Control bytes for the I2C interface enum I2CControlByte { CONTROL_COMMAND = 0x00, CONTROL_DATA = 0x40 }; //I2C interface variables I2C m_I2C; const int m_ADDR; //Back buffer char m_Buffer[1025]; //Command and data helpers void writeCommand(char command); void writeData(char data); }; #endif