Guide program for the display oled 128x64
Dependents: programa_pantalla_oled_128x64_I2C 19E042PIM_V3_Z2 19E042PIM_T3_R 19E042PIM_TJAN_2020_0494 ... more
Adafruit_SSD1306.h
- Committer:
- nkhorman
- Date:
- 2014-10-19
- Revision:
- 9:ddb97c9850a2
- Parent:
- 8:416b8fe451b3
- Child:
- 10:d5aee2d2f8dd
- Child:
- 11:86909e6db3c8
File content as of revision 9:ddb97c9850a2:
/********************************************************************* 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> // 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_EXTERNALVCC 0x1 #define SSD1306_SWITCHCAPVCC 0x2 class Adafruit_SSD1306 : public Adafruit_GFX { 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(); virtual void splash(); virtual void drawPixel(int16_t x, int16_t y, uint16_t color); 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