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Adafruit_SSD1306.h@17:efa7db909ede, 2016-12-22 (annotated)
- Committer:
- qubit
- Date:
- Thu Dec 22 08:00:06 2016 +0000
- Revision:
- 17:efa7db909ede
- Parent:
- 15:77feec1c0684
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Who changed what in which revision?
User | Revision | Line number | New contents of line |
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nkhorman | 0:c3dcd4c4983a | 1 | /********************************************************************* |
nkhorman | 0:c3dcd4c4983a | 2 | This is a library for our Monochrome OLEDs based on SSD1306 drivers |
nkhorman | 0:c3dcd4c4983a | 3 | |
nkhorman | 0:c3dcd4c4983a | 4 | Pick one up today in the adafruit shop! |
nkhorman | 0:c3dcd4c4983a | 5 | ------> http://www.adafruit.com/category/63_98 |
nkhorman | 0:c3dcd4c4983a | 6 | |
nkhorman | 0:c3dcd4c4983a | 7 | These displays use SPI to communicate, 4 or 5 pins are required to |
nkhorman | 0:c3dcd4c4983a | 8 | interface |
nkhorman | 0:c3dcd4c4983a | 9 | |
nkhorman | 0:c3dcd4c4983a | 10 | Adafruit invests time and resources providing this open source code, |
nkhorman | 0:c3dcd4c4983a | 11 | please support Adafruit and open-source hardware by purchasing |
nkhorman | 0:c3dcd4c4983a | 12 | products from Adafruit! |
nkhorman | 0:c3dcd4c4983a | 13 | |
nkhorman | 0:c3dcd4c4983a | 14 | Written by Limor Fried/Ladyada for Adafruit Industries. |
nkhorman | 0:c3dcd4c4983a | 15 | BSD license, check license.txt for more information |
nkhorman | 0:c3dcd4c4983a | 16 | All text above, and the splash screen must be included in any redistribution |
nkhorman | 0:c3dcd4c4983a | 17 | *********************************************************************/ |
nkhorman | 0:c3dcd4c4983a | 18 | |
nkhorman | 0:c3dcd4c4983a | 19 | /* |
nkhorman | 9:ddb97c9850a2 | 20 | * Modified by Neal Horman 7/14/2012 for use in mbed |
nkhorman | 0:c3dcd4c4983a | 21 | */ |
nkhorman | 0:c3dcd4c4983a | 22 | |
nkhorman | 0:c3dcd4c4983a | 23 | #ifndef _ADAFRUIT_SSD1306_H_ |
nkhorman | 0:c3dcd4c4983a | 24 | #define _ADAFRUIT_SSD1306_H_ |
nkhorman | 0:c3dcd4c4983a | 25 | |
nkhorman | 0:c3dcd4c4983a | 26 | #include "mbed.h" |
nkhorman | 0:c3dcd4c4983a | 27 | #include "Adafruit_GFX.h" |
nkhorman | 0:c3dcd4c4983a | 28 | |
nkhorman | 9:ddb97c9850a2 | 29 | #include <vector> |
nkhorman | 9:ddb97c9850a2 | 30 | #include <algorithm> |
nkhorman | 0:c3dcd4c4983a | 31 | |
nkhorman | 9:ddb97c9850a2 | 32 | // A DigitalOut sub-class that provides a constructed default state |
nkhorman | 9:ddb97c9850a2 | 33 | class DigitalOut2 : public DigitalOut |
nkhorman | 9:ddb97c9850a2 | 34 | { |
nkhorman | 9:ddb97c9850a2 | 35 | public: |
nkhorman | 9:ddb97c9850a2 | 36 | DigitalOut2(PinName pin, bool active = false) : DigitalOut(pin) { write(active); }; |
nkhorman | 9:ddb97c9850a2 | 37 | DigitalOut2& operator= (int value) { write(value); return *this; }; |
nkhorman | 9:ddb97c9850a2 | 38 | DigitalOut2& operator= (DigitalOut2& rhs) { write(rhs.read()); return *this; }; |
nkhorman | 9:ddb97c9850a2 | 39 | operator int() { return read(); }; |
nkhorman | 9:ddb97c9850a2 | 40 | }; |
Neal Horman |
6:1be3e3b46eb7 | 41 | |
nkhorman | 0:c3dcd4c4983a | 42 | #define SSD1306_EXTERNALVCC 0x1 |
nkhorman | 0:c3dcd4c4983a | 43 | #define SSD1306_SWITCHCAPVCC 0x2 |
nkhorman | 0:c3dcd4c4983a | 44 | |
nkhorman | 11:86909e6db3c8 | 45 | /** The pure base class for the SSD1306 display driver. |
nkhorman | 11:86909e6db3c8 | 46 | * |
nkhorman | 11:86909e6db3c8 | 47 | * You should derive from this for a new transport interface type, |
nkhorman | 11:86909e6db3c8 | 48 | * such as the SPI and I2C drivers. |
nkhorman | 11:86909e6db3c8 | 49 | */ |
nkhorman | 0:c3dcd4c4983a | 50 | class Adafruit_SSD1306 : public Adafruit_GFX |
nkhorman | 0:c3dcd4c4983a | 51 | { |
nkhorman | 9:ddb97c9850a2 | 52 | public: |
nkhorman | 9:ddb97c9850a2 | 53 | Adafruit_SSD1306(PinName RST, uint8_t rawHeight = 32, uint8_t rawWidth = 128) |
nkhorman | 9:ddb97c9850a2 | 54 | : Adafruit_GFX(rawWidth,rawHeight) |
nkhorman | 9:ddb97c9850a2 | 55 | , rst(RST,false) |
nkhorman | 11:86909e6db3c8 | 56 | { |
nkhorman | 11:86909e6db3c8 | 57 | buffer.resize(rawHeight * rawWidth / 8); |
nkhorman | 11:86909e6db3c8 | 58 | }; |
nkhorman | 9:ddb97c9850a2 | 59 | |
nkhorman | 9:ddb97c9850a2 | 60 | void begin(uint8_t switchvcc = SSD1306_SWITCHCAPVCC); |
nkhorman | 11:86909e6db3c8 | 61 | |
nkhorman | 11:86909e6db3c8 | 62 | // These must be implemented in the derived transport driver |
nkhorman | 9:ddb97c9850a2 | 63 | virtual void command(uint8_t c) = 0; |
nkhorman | 9:ddb97c9850a2 | 64 | virtual void data(uint8_t c) = 0; |
nkhorman | 11:86909e6db3c8 | 65 | virtual void drawPixel(int16_t x, int16_t y, uint16_t color); |
nkhorman | 11:86909e6db3c8 | 66 | |
nkhorman | 11:86909e6db3c8 | 67 | /// Clear the display buffer |
nkhorman | 9:ddb97c9850a2 | 68 | void clearDisplay(void); |
nkhorman | 9:ddb97c9850a2 | 69 | virtual void invertDisplay(bool i); |
nkhorman | 11:86909e6db3c8 | 70 | |
nkhorman | 11:86909e6db3c8 | 71 | /// Cause the display to be updated with the buffer content. |
nkhorman | 9:ddb97c9850a2 | 72 | void display(); |
nkhorman | 11:86909e6db3c8 | 73 | /// Fill the buffer with the AdaFruit splash screen. |
nkhorman | 9:ddb97c9850a2 | 74 | virtual void splash(); |
nkhorman | 9:ddb97c9850a2 | 75 | |
nkhorman | 9:ddb97c9850a2 | 76 | protected: |
nkhorman | 9:ddb97c9850a2 | 77 | virtual void sendDisplayBuffer() = 0; |
nkhorman | 9:ddb97c9850a2 | 78 | DigitalOut2 rst; |
nkhorman | 9:ddb97c9850a2 | 79 | |
nkhorman | 9:ddb97c9850a2 | 80 | // the memory buffer for the LCD |
nkhorman | 9:ddb97c9850a2 | 81 | std::vector<uint8_t> buffer; |
nkhorman | 9:ddb97c9850a2 | 82 | }; |
nkhorman | 9:ddb97c9850a2 | 83 | |
nkhorman | 11:86909e6db3c8 | 84 | |
nkhorman | 11:86909e6db3c8 | 85 | /** This is the SPI SSD1306 display driver transport class |
nkhorman | 11:86909e6db3c8 | 86 | * |
nkhorman | 11:86909e6db3c8 | 87 | */ |
nkhorman | 9:ddb97c9850a2 | 88 | class Adafruit_SSD1306_Spi : public Adafruit_SSD1306 |
nkhorman | 9:ddb97c9850a2 | 89 | { |
nkhorman | 9:ddb97c9850a2 | 90 | public: |
nkhorman | 11:86909e6db3c8 | 91 | /** Create a SSD1306 SPI transport display driver instance with the specified DC, RST, and CS pins, as well as the display dimentions |
nkhorman | 11:86909e6db3c8 | 92 | * |
nkhorman | 11:86909e6db3c8 | 93 | * Required parameters |
nkhorman | 11:86909e6db3c8 | 94 | * @param spi - a reference to an initialized SPI object |
nkhorman | 11:86909e6db3c8 | 95 | * @param DC (Data/Command) pin name |
nkhorman | 11:86909e6db3c8 | 96 | * @param RST (Reset) pin name |
nkhorman | 11:86909e6db3c8 | 97 | * @param CS (Chip Select) pin name |
nkhorman | 11:86909e6db3c8 | 98 | * |
nkhorman | 11:86909e6db3c8 | 99 | * Optional parameters |
nkhorman | 11:86909e6db3c8 | 100 | * @param rawHeight - the vertical number of pixels for the display, defaults to 32 |
nkhorman | 11:86909e6db3c8 | 101 | * @param rawWidth - the horizonal number of pixels for the display, defaults to 128 |
nkhorman | 11:86909e6db3c8 | 102 | */ |
nkhorman | 9:ddb97c9850a2 | 103 | Adafruit_SSD1306_Spi(SPI &spi, PinName DC, PinName RST, PinName CS, uint8_t rawHieght = 32, uint8_t rawWidth = 128) |
nkhorman | 9:ddb97c9850a2 | 104 | : Adafruit_SSD1306(RST, rawHieght, rawWidth) |
nkhorman | 9:ddb97c9850a2 | 105 | , cs(CS,true) |
nkhorman | 9:ddb97c9850a2 | 106 | , dc(DC,false) |
nkhorman | 9:ddb97c9850a2 | 107 | , mspi(spi) |
nkhorman | 9:ddb97c9850a2 | 108 | { |
nkhorman | 9:ddb97c9850a2 | 109 | begin(); |
nkhorman | 9:ddb97c9850a2 | 110 | splash(); |
nkhorman | 9:ddb97c9850a2 | 111 | display(); |
nkhorman | 9:ddb97c9850a2 | 112 | }; |
nkhorman | 9:ddb97c9850a2 | 113 | |
nkhorman | 9:ddb97c9850a2 | 114 | virtual void command(uint8_t c) |
nkhorman | 9:ddb97c9850a2 | 115 | { |
nkhorman | 9:ddb97c9850a2 | 116 | cs = 1; |
nkhorman | 9:ddb97c9850a2 | 117 | dc = 0; |
nkhorman | 9:ddb97c9850a2 | 118 | cs = 0; |
nkhorman | 9:ddb97c9850a2 | 119 | mspi.write(c); |
nkhorman | 9:ddb97c9850a2 | 120 | cs = 1; |
nkhorman | 9:ddb97c9850a2 | 121 | }; |
nkhorman | 9:ddb97c9850a2 | 122 | |
nkhorman | 9:ddb97c9850a2 | 123 | virtual void data(uint8_t c) |
nkhorman | 9:ddb97c9850a2 | 124 | { |
nkhorman | 9:ddb97c9850a2 | 125 | cs = 1; |
nkhorman | 9:ddb97c9850a2 | 126 | dc = 1; |
nkhorman | 9:ddb97c9850a2 | 127 | cs = 0; |
nkhorman | 9:ddb97c9850a2 | 128 | mspi.write(c); |
nkhorman | 9:ddb97c9850a2 | 129 | cs = 1; |
nkhorman | 9:ddb97c9850a2 | 130 | }; |
nkhorman | 9:ddb97c9850a2 | 131 | |
nkhorman | 9:ddb97c9850a2 | 132 | protected: |
nkhorman | 9:ddb97c9850a2 | 133 | virtual void sendDisplayBuffer() |
nkhorman | 9:ddb97c9850a2 | 134 | { |
nkhorman | 9:ddb97c9850a2 | 135 | cs = 1; |
nkhorman | 9:ddb97c9850a2 | 136 | dc = 1; |
nkhorman | 9:ddb97c9850a2 | 137 | cs = 0; |
nkhorman | 9:ddb97c9850a2 | 138 | |
nkhorman | 9:ddb97c9850a2 | 139 | for(uint16_t i=0, q=buffer.size(); i<q; i++) |
nkhorman | 9:ddb97c9850a2 | 140 | mspi.write(buffer[i]); |
nkhorman | 9:ddb97c9850a2 | 141 | |
nkhorman | 11:86909e6db3c8 | 142 | if(height() == 32) |
nkhorman | 11:86909e6db3c8 | 143 | { |
nkhorman | 11:86909e6db3c8 | 144 | for(uint16_t i=0, q=buffer.size(); i<q; i++) |
nkhorman | 11:86909e6db3c8 | 145 | mspi.write(0); |
nkhorman | 11:86909e6db3c8 | 146 | } |
nkhorman | 11:86909e6db3c8 | 147 | |
nkhorman | 9:ddb97c9850a2 | 148 | cs = 1; |
nkhorman | 9:ddb97c9850a2 | 149 | }; |
nkhorman | 9:ddb97c9850a2 | 150 | |
nkhorman | 9:ddb97c9850a2 | 151 | DigitalOut2 cs, dc; |
nkhorman | 9:ddb97c9850a2 | 152 | SPI &mspi; |
nkhorman | 9:ddb97c9850a2 | 153 | }; |
nkhorman | 9:ddb97c9850a2 | 154 | |
nkhorman | 11:86909e6db3c8 | 155 | /** This is the I2C SSD1306 display driver transport class |
nkhorman | 11:86909e6db3c8 | 156 | * |
nkhorman | 11:86909e6db3c8 | 157 | */ |
nkhorman | 9:ddb97c9850a2 | 158 | class Adafruit_SSD1306_I2c : public Adafruit_SSD1306 |
nkhorman | 9:ddb97c9850a2 | 159 | { |
nkhorman | 9:ddb97c9850a2 | 160 | public: |
nkhorman | 9:ddb97c9850a2 | 161 | #define SSD_I2C_ADDRESS 0x78 |
nkhorman | 11:86909e6db3c8 | 162 | /** Create a SSD1306 I2C transport display driver instance with the specified RST pin name, the I2C address, as well as the display dimensions |
nkhorman | 11:86909e6db3c8 | 163 | * |
nkhorman | 11:86909e6db3c8 | 164 | * Required parameters |
nkhorman | 11:86909e6db3c8 | 165 | * @param i2c - A reference to an initialized I2C object |
nkhorman | 11:86909e6db3c8 | 166 | * @param RST - The Reset pin name |
nkhorman | 11:86909e6db3c8 | 167 | * |
nkhorman | 11:86909e6db3c8 | 168 | * Optional parameters |
nkhorman | 11:86909e6db3c8 | 169 | * @param i2cAddress - The i2c address of the display |
nkhorman | 11:86909e6db3c8 | 170 | * @param rawHeight - The vertical number of pixels for the display, defaults to 32 |
nkhorman | 11:86909e6db3c8 | 171 | * @param rawWidth - The horizonal number of pixels for the display, defaults to 128 |
nkhorman | 11:86909e6db3c8 | 172 | */ |
nkhorman | 9:ddb97c9850a2 | 173 | Adafruit_SSD1306_I2c(I2C &i2c, PinName RST, uint8_t i2cAddress = SSD_I2C_ADDRESS, uint8_t rawHeight = 32, uint8_t rawWidth = 128) |
nkhorman | 9:ddb97c9850a2 | 174 | : Adafruit_SSD1306(RST, rawHeight, rawWidth) |
nkhorman | 9:ddb97c9850a2 | 175 | , mi2c(i2c) |
nkhorman | 9:ddb97c9850a2 | 176 | , mi2cAddress(i2cAddress) |
nkhorman | 9:ddb97c9850a2 | 177 | { |
nkhorman | 9:ddb97c9850a2 | 178 | begin(); |
nkhorman | 9:ddb97c9850a2 | 179 | splash(); |
nkhorman | 9:ddb97c9850a2 | 180 | display(); |
nkhorman | 9:ddb97c9850a2 | 181 | }; |
nkhorman | 9:ddb97c9850a2 | 182 | |
nkhorman | 9:ddb97c9850a2 | 183 | virtual void command(uint8_t c) |
nkhorman | 9:ddb97c9850a2 | 184 | { |
nkhorman | 9:ddb97c9850a2 | 185 | char buff[2]; |
nkhorman | 9:ddb97c9850a2 | 186 | buff[0] = 0; // Command Mode |
nkhorman | 9:ddb97c9850a2 | 187 | buff[1] = c; |
nkhorman | 9:ddb97c9850a2 | 188 | mi2c.write(mi2cAddress, buff, sizeof(buff)); |
nkhorman | 9:ddb97c9850a2 | 189 | } |
nkhorman | 9:ddb97c9850a2 | 190 | |
nkhorman | 9:ddb97c9850a2 | 191 | virtual void data(uint8_t c) |
nkhorman | 9:ddb97c9850a2 | 192 | { |
nkhorman | 9:ddb97c9850a2 | 193 | char buff[2]; |
nkhorman | 9:ddb97c9850a2 | 194 | buff[0] = 0x40; // Data Mode |
nkhorman | 9:ddb97c9850a2 | 195 | buff[1] = c; |
nkhorman | 9:ddb97c9850a2 | 196 | mi2c.write(mi2cAddress, buff, sizeof(buff)); |
nkhorman | 9:ddb97c9850a2 | 197 | }; |
nkhorman | 9:ddb97c9850a2 | 198 | |
nkhorman | 9:ddb97c9850a2 | 199 | protected: |
nkhorman | 9:ddb97c9850a2 | 200 | virtual void sendDisplayBuffer() |
nkhorman | 9:ddb97c9850a2 | 201 | { |
nkhorman | 9:ddb97c9850a2 | 202 | char buff[17]; |
nkhorman | 9:ddb97c9850a2 | 203 | buff[0] = 0x40; // Data Mode |
nkhorman | 9:ddb97c9850a2 | 204 | |
nkhorman | 9:ddb97c9850a2 | 205 | // send display buffer in 16 byte chunks |
nkhorman | 9:ddb97c9850a2 | 206 | for(uint16_t i=0, q=buffer.size(); i<q; i+=16 ) |
nkhorman | 9:ddb97c9850a2 | 207 | { uint8_t x ; |
nkhorman | 9:ddb97c9850a2 | 208 | |
nkhorman | 9:ddb97c9850a2 | 209 | // TODO - this will segfault if buffer.size() % 16 != 0 |
nkhorman | 9:ddb97c9850a2 | 210 | for(x=1; x<sizeof(buff); x++) |
JojoS | 15:77feec1c0684 | 211 | buff[x] = buffer[i+x-1]; |
nkhorman | 9:ddb97c9850a2 | 212 | mi2c.write(mi2cAddress, buff, sizeof(buff)); |
nkhorman | 9:ddb97c9850a2 | 213 | } |
nkhorman | 9:ddb97c9850a2 | 214 | }; |
nkhorman | 9:ddb97c9850a2 | 215 | |
nkhorman | 9:ddb97c9850a2 | 216 | I2C &mi2c; |
nkhorman | 9:ddb97c9850a2 | 217 | uint8_t mi2cAddress; |
nkhorman | 0:c3dcd4c4983a | 218 | }; |
nkhorman | 0:c3dcd4c4983a | 219 | |
nkhorman | 0:c3dcd4c4983a | 220 | #endif |