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.
Diff: Adafruit_SSD1306.cpp
- Revision:
- 0:c3dcd4c4983a
- Child:
- 4:853097cfa773
diff -r 000000000000 -r c3dcd4c4983a Adafruit_SSD1306.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Adafruit_SSD1306.cpp Mon Jul 16 02:19:36 2012 +0000 @@ -0,0 +1,274 @@ +/********************************************************************* +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 below must be included in any redistribution +*********************************************************************/ + +/* + * Modified by Neal Horman 7/14/2012 for use in LPC1768 + */ + +#include "mbed.h" +#include "Adafruit_SSD1306.h" + +uint8_t splashScreen[SSD1306_LCDHEIGHT * SSD1306_LCDWIDTH / 8] = { +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, +0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x80, 0x80, 0xC0, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xF8, 0xE0, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, +0x80, 0x80, 0x00, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0xFF, +0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, +0x80, 0xFF, 0xFF, 0x80, 0x80, 0x00, 0x80, 0x80, 0x00, 0x80, 0x80, 0x80, 0x80, 0x00, 0x80, 0x80, +0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x8C, 0x8E, 0x84, 0x00, 0x00, 0x80, 0xF8, +0xF8, 0xF8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xE0, 0xE0, 0xC0, 0x80, +0x00, 0xE0, 0xFC, 0xFE, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFF, 0xC7, 0x01, 0x01, +0x01, 0x01, 0x83, 0xFF, 0xFF, 0x00, 0x00, 0x7C, 0xFE, 0xC7, 0x01, 0x01, 0x01, 0x01, 0x83, 0xFF, +0xFF, 0xFF, 0x00, 0x38, 0xFE, 0xC7, 0x83, 0x01, 0x01, 0x01, 0x83, 0xC7, 0xFF, 0xFF, 0x00, 0x00, +0x01, 0xFF, 0xFF, 0x01, 0x01, 0x00, 0xFF, 0xFF, 0x07, 0x01, 0x01, 0x01, 0x00, 0x00, 0x7F, 0xFF, +0x80, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x7F, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x01, 0xFF, +0xFF, 0xFF, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x03, 0x0F, 0x3F, 0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE7, 0xC7, 0xC7, 0x8F, +0x8F, 0x9F, 0xBF, 0xFF, 0xFF, 0xC3, 0xC0, 0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xFC, 0xFC, +0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xF8, 0xF8, 0xF0, 0xF0, 0xE0, 0xC0, 0x00, 0x01, 0x03, 0x03, 0x03, +0x03, 0x03, 0x01, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01, +0x03, 0x01, 0x00, 0x00, 0x00, 0x01, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01, 0x03, 0x03, 0x00, 0x00, +0x00, 0x03, 0x03, 0x00, 0x00, 0x00, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, +0x03, 0x03, 0x03, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x01, 0x03, 0x01, 0x00, 0x00, 0x00, 0x03, +0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +#if (SSD1306_LCDHEIGHT == 64) +0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0xF0, 0xF9, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x1F, 0x0F, +0x87, 0xC7, 0xF7, 0xFF, 0xFF, 0x1F, 0x1F, 0x3D, 0xFC, 0xF8, 0xF8, 0xF8, 0xF8, 0x7C, 0x7D, 0xFF, +0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x0F, 0x07, 0x00, 0x30, 0x30, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0xFE, 0xFE, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0xC0, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0xC0, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x7F, 0x3F, 0x1F, +0x0F, 0x07, 0x1F, 0x7F, 0xFF, 0xFF, 0xF8, 0xF8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xF8, 0xE0, +0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00, +0x00, 0xFC, 0xFE, 0xFC, 0x0C, 0x06, 0x06, 0x0E, 0xFC, 0xF8, 0x00, 0x00, 0xF0, 0xF8, 0x1C, 0x0E, +0x06, 0x06, 0x06, 0x0C, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00, 0x00, 0x00, 0xFC, +0xFE, 0xFC, 0x00, 0x18, 0x3C, 0x7E, 0x66, 0xE6, 0xCE, 0x84, 0x00, 0x00, 0x06, 0xFF, 0xFF, 0x06, +0x06, 0xFC, 0xFE, 0xFC, 0x0C, 0x06, 0x06, 0x06, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00, 0xC0, 0xF8, +0xFC, 0x4E, 0x46, 0x46, 0x46, 0x4E, 0x7C, 0x78, 0x40, 0x18, 0x3C, 0x76, 0xE6, 0xCE, 0xCC, 0x80, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x01, 0x07, 0x0F, 0x1F, 0x1F, 0x3F, 0x3F, 0x3F, 0x3F, 0x1F, 0x0F, 0x03, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00, +0x00, 0x0F, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00, 0x03, 0x07, 0x0E, 0x0C, +0x18, 0x18, 0x0C, 0x06, 0x0F, 0x0F, 0x0F, 0x00, 0x00, 0x01, 0x0F, 0x0E, 0x0C, 0x18, 0x0C, 0x0F, +0x07, 0x01, 0x00, 0x04, 0x0E, 0x0C, 0x18, 0x0C, 0x0F, 0x07, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, +0x00, 0x0F, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x07, +0x07, 0x0C, 0x0C, 0x18, 0x1C, 0x0C, 0x06, 0x06, 0x00, 0x04, 0x0E, 0x0C, 0x18, 0x0C, 0x0F, 0x07, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +#endif +}; + +Adafruit_SSD1306::Adafruit_SSD1306(SPI &spi, PinName DC, PinName RST, PinName CS) + : Adafruit_GFX(SSD1306_LCDWIDTH, SSD1306_LCDHEIGHT) + , rst(RST,false), cs(CS,true), dc(DC,false), mspi(spi) +{ + memcpy(buffer,splashScreen,sizeof(buffer)); + begin(); + display(); +}; + +void Adafruit_SSD1306::begin(uint8_t vccstate) +{ + rst = 1; + // VDD (3.3V) goes high at start, lets just chill for a ms + wait_ms(1); + // bring reset low + rst = 0; + // wait 10ms + wait_ms(10); + // bring out of reset + rst = 1; + // turn on VCC (9V?) + +#if defined SSD1306_128_32 + // Init sequence for 128x32 OLED module + ssd1306_command(SSD1306_DISPLAYOFF); // 0xAE + ssd1306_command(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 + ssd1306_command(0x80); // the suggested ratio 0x80 + ssd1306_command(SSD1306_SETMULTIPLEX); // 0xA8 + ssd1306_command(0x1F); + ssd1306_command(SSD1306_SETDISPLAYOFFSET); // 0xD3 + ssd1306_command(0x0); // no offset + ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0 + ssd1306_command(SSD1306_CHARGEPUMP); // 0x8D + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306_command(0x10); } + else + { ssd1306_command(0x14); } + ssd1306_command(SSD1306_MEMORYMODE); // 0x20 + ssd1306_command(0x00); // 0x0 act like ks0108 + ssd1306_command(SSD1306_SEGREMAP | 0x1); + ssd1306_command(SSD1306_COMSCANDEC); + ssd1306_command(SSD1306_SETCOMPINS); // 0xDA + ssd1306_command(0x02); + ssd1306_command(SSD1306_SETCONTRAST); // 0x81 + ssd1306_command(0x8F); + ssd1306_command(SSD1306_SETPRECHARGE); // 0xd9 + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306_command(0x22); } + else + { ssd1306_command(0xF1); } + ssd1306_command(SSD1306_SETVCOMDETECT); // 0xDB + ssd1306_command(0x40); + ssd1306_command(SSD1306_DISPLAYALLON_RESUME); // 0xA4 + ssd1306_command(SSD1306_NORMALDISPLAY); // 0xA6 +#endif + +#if defined SSD1306_128_64 + // Init sequence for 128x64 OLED module + ssd1306_command(SSD1306_DISPLAYOFF); // 0xAE + ssd1306_command(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 + ssd1306_command(0x80); // the suggested ratio 0x80 + ssd1306_command(SSD1306_SETMULTIPLEX); // 0xA8 + ssd1306_command(0x3F); + ssd1306_command(SSD1306_SETDISPLAYOFFSET); // 0xD3 + ssd1306_command(0x0); // no offset + ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0 + ssd1306_command(SSD1306_CHARGEPUMP); // 0x8D + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306_command(0x10); } + else + { ssd1306_command(0x14); } + ssd1306_command(SSD1306_MEMORYMODE); // 0x20 + ssd1306_command(0x00); // 0x0 act like ks0108 + ssd1306_command(SSD1306_SEGREMAP | 0x1); + ssd1306_command(SSD1306_COMSCANDEC); + ssd1306_command(SSD1306_SETCOMPINS); // 0xDA + ssd1306_command(0x12); + ssd1306_command(SSD1306_SETCONTRAST); // 0x81 + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306_command(0x9F); } + else + { ssd1306_command(0xCF); } + ssd1306_command(SSD1306_SETPRECHARGE); // 0xd9 + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306_command(0x22); } + else + { ssd1306_command(0xF1); } + ssd1306_command(SSD1306_SETVCOMDETECT); // 0xDB + ssd1306_command(0x40); + ssd1306_command(SSD1306_DISPLAYALLON_RESUME); // 0xA4 + ssd1306_command(SSD1306_NORMALDISPLAY); // 0xA6 +#endif + + ssd1306_command(SSD1306_DISPLAYON);//--turn on oled panel +} + +// the most basic function, set a single pixel +void Adafruit_SSD1306::drawPixel(int16_t x, int16_t y, uint16_t color) +{ + if ((x < 0) || (x >= width()) || (y < 0) || (y >= height())) + return; + + // check rotation, move pixel around if necessary + switch (getRotation()) + { + case 1: + swap(x, y); + x = _rawWidth - x - 1; + break; + case 2: + x = _rawWidth - x - 1; + y = _rawHeight - y - 1; + break; + case 3: + swap(x, y); + y = _rawHeight - y - 1; + break; + } + + // x is which column + if (color == WHITE) + buffer[x+ (y/8)*SSD1306_LCDWIDTH] |= _BV((y%8)); + else + buffer[x+ (y/8)*SSD1306_LCDWIDTH] &= ~_BV((y%8)); +} + +void Adafruit_SSD1306::invertDisplay(bool i) +{ + if (i) + ssd1306_command(SSD1306_INVERTDISPLAY); + else + ssd1306_command(SSD1306_NORMALDISPLAY); +} + +void Adafruit_SSD1306::ssd1306_command(uint8_t c) +{ + cs = 1; + dc = 0; + cs = 0; + mspi.write(c); + cs = 1; +} + +void Adafruit_SSD1306::ssd1306_data(uint8_t c) +{ + cs = 1; + dc = 1; + cs = 0; + mspi.write(c); + cs = 1; +} + +void Adafruit_SSD1306::display(void) +{ + ssd1306_command(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0 + ssd1306_command(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0 + ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0 + + cs = 1; + dc = 1; + cs = 0; + + for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) + mspi.write(buffer[i]); + + // i wonder why we have to do this (check datasheet) + if (SSD1306_LCDHEIGHT == 32) + { + for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) + mspi.write(0); + } + + cs = 1; +} + +// clear everything +void Adafruit_SSD1306::clearDisplay(void) +{ + memset(buffer,0,sizeof(buffer)); +}