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Adafruit_SSD1306.cpp
00001 /********************************************************************* 00002 This is a library for our Monochrome OLEDs based on SSD1306 drivers 00003 00004 Pick one up today in the adafruit shop! 00005 ------> http://www.adafruit.com/category/63_98 00006 00007 These displays use SPI to communicate, 4 or 5 pins are required to 00008 interface 00009 00010 Adafruit invests time and resources providing this open source code, 00011 please support Adafruit and open-source hardware by purchasing 00012 products from Adafruit! 00013 00014 Written by Limor Fried/Ladyada for Adafruit Industries. 00015 BSD license, check license.txt for more information 00016 All text above, and the splash screen below must be included in any redistribution 00017 *********************************************************************/ 00018 00019 /* 00020 * Modified by Neal Horman 7/14/2012 for use in LPC1768 00021 */ 00022 00023 #include "mbed.h" 00024 #include "Adafruit_SSD1306.h" 00025 00026 uint8_t splashScreen[SSD1306_LCDHEIGHT * SSD1306_LCDWIDTH / 8] = { 00027 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00028 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00029 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00030 0x70, 0xFC, 0xFE, 0xFC, 0xF1, 0x07, 0xFF, 0xFF, 0xFE, 0xFC, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 00031 0x80, 0x80, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0xF0, 00032 0xF0, 0xF0, 0xF0, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00033 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00034 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 00035 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00036 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00037 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFE, 0xFF, 0xFE, 0xF8, 0xF0, 00038 0xF0, 0xE1, 0xE3, 0x47, 0x47, 0x00, 0x07, 0x07, 0x03, 0x01, 0x00, 0x00, 0x00, 0x7C, 0xFE, 0xFF, 00039 0xFF, 0xFF, 0xE7, 0xC3, 0x83, 0x83, 0x83, 0x03, 0x03, 0x07, 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 00040 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0xE0, 0xE0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xE0, 0xC0, 0x00, 0x00, 00041 0x00, 0x00, 0x00, 0x00, 0xC0, 0xC0, 0xE0, 0xE0, 0xE0, 0x70, 0x70, 0x70, 0xE0, 0xE0, 0xE0, 0xC0, 00042 0xC0, 0x80, 0x00, 0x00, 0x00, 0xF0, 0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0xF0, 0xF0, 00043 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00044 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 00045 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xFE, 0xFF, 0x7F, 0x7F, 0x3F, 0x1F, 0x1F, 0x0F, 0x87, 0x87, 0xC3, 00046 0xC1, 0xE1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 00047 0x03, 0x07, 0x07, 0x0F, 0x0F, 0x0F, 0x1F, 0xFF, 0xFF, 0xFE, 0xFC, 0xF0, 0x00, 0x00, 0x00, 0xFF, 00048 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 00049 0x00, 0x00, 0x7C, 0xFF, 0xFF, 0xFF, 0xFF, 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0xFF, 0xFF, 00050 0xFF, 0xFF, 0x7C, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 00051 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00052 0x00, 0x00, 0x00, 0x00, 0x80, 0xC0, 0xC0, 0xE0, 0xF0, 0xF8, 0x78, 0x3C, 0x3E, 0x1F, 0x1F, 0x0F, 00053 0x8F, 0x87, 0x03, 0x03, 0x01, 0x00, 0x00, 0xF8, 0xF8, 0xFC, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 00054 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0E, 0x0F, 0x1F, 00055 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1F, 0x0F, 0x0F, 0x07, 0x03, 0x00, 0x00, 0x00, 0x00, 0x1F, 00056 0x1F, 0x1F, 0x1F, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00, 00057 0x00, 0x00, 0x00, 0x01, 0x07, 0x07, 0x0F, 0x0F, 0x1F, 0x1E, 0x1E, 0x1E, 0x1F, 0x0F, 0x0F, 0x07, 00058 0x07, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0F, 0x0F, 0x1F, 0x1F, 0x1E, 0x1E, 0x1E, 0x1E, 00059 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0xC0, 0xC0, 0x60, 0x70, 0x30, 0x38, 0x18, 0x1C, 00060 0x0E, 0x8E, 0x07, 0x07, 0x03, 0x03, 0x01, 0xF1, 0xF0, 0xF8, 0xF8, 0xFC, 0xFC, 0xFE, 0xFF, 0xFF, 00061 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 00062 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xE0, 00063 0xE0, 0x60, 0x30, 0x30, 0x30, 0x30, 0x30, 0x70, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 00064 0xC0, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00065 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xC0, 0xE0, 0x00, 0x00, 0x00, 00066 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00067 0x04, 0x04, 0x02, 0x02, 0x01, 0x01, 0x01, 0xF0, 0xF8, 0xF8, 0xF8, 0xFC, 0xFC, 0xFE, 0xFE, 0xFF, 00068 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 00069 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 00070 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x3F, 0x7F, 00071 0x78, 0xF0, 0xE0, 0xC0, 0xC0, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0xFF, 00072 0xFF, 0xFF, 0x0C, 0x0C, 0x0C, 0x0C, 0x00, 0x00, 0x00, 0x28, 0x18, 0x18, 0x0C, 0x0C, 0x0C, 0x0C, 00073 0x18, 0x38, 0xF8, 0xF0, 0xC0, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0xFF, 0xFF, 0xFF, 0x0C, 0x0C, 0x0C, 00074 0x0C, 0x00, 0x00, 0x00, 0xE0, 0xF0, 0xF8, 0x1C, 0x0C, 0x0C, 0x0C, 0x1C, 0x18, 0x00, 0x00, 0x00, 00075 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x3F, 0x3F, 0x3F, 0x3F, 0x7F, 00076 0x7F, 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 00077 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 00078 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 00079 0x00, 0x00, 0x00, 0x01, 0x01, 0x03, 0x87, 0xFF, 0xFE, 0x7C, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 00080 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0xF0, 0xF8, 0x1C, 0x0C, 0x06, 0x06, 0x06, 00081 0x06, 0x86, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 00082 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x07, 0x07, 0x0F, 0x0E, 0x1C, 0xFC, 0xF8, 0xF0, 0x00, 0x00, 00083 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00084 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x03, 0x07, 0x07, 00085 0x07, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F, 0x3F, 0x3F, 0x3F, 0x3F, 0x7F, 0x7F, 0x7F, 00086 0x7F, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x07, 00087 0x06, 0x06, 0x06, 0x06, 0x06, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 00088 0x03, 0x07, 0x07, 0x06, 0x06, 0x06, 0x00, 0x00, 0x00, 0x03, 0x03, 0x07, 0x06, 0x06, 0x06, 0x03, 00089 0x03, 0x01, 0x07, 0x07, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03, 0x07, 0x07, 0x06, 0x06, 00090 0x06, 0x00, 0x00, 0x00, 0x03, 0x03, 0x06, 0x06, 0x06, 0x07, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00 00091 }; 00092 00093 Adafruit_SSD1306::Adafruit_SSD1306(SPI &spi, PinName DC, PinName RST, PinName CS) 00094 : Adafruit_GFX(SSD1306_LCDWIDTH, SSD1306_LCDHEIGHT) 00095 , rst(RST,false), cs(CS,true), dc(DC,false), mspi(spi) 00096 { 00097 memcpy(buffer,splashScreen,sizeof(buffer)); 00098 begin(); 00099 }; 00100 00101 void Adafruit_SSD1306::begin(uint8_t vccstate) 00102 { 00103 rst = 1; 00104 // VDD (3.3V) goes high at start, lets just chill for a ms 00105 wait_ms(1); 00106 // bring reset low 00107 rst = 0; 00108 // wait 10ms 00109 wait_ms(10); 00110 // bring out of reset 00111 rst = 1; 00112 // turn on VCC (9V?) 00113 00114 #if defined SSD1306_128_32 00115 // Init sequence for 128x32 OLED module 00116 ssd1306_command(SSD1306_DISPLAYOFF); // 0xAE 00117 ssd1306_command(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 00118 ssd1306_command(0x80); // the suggested ratio 0x80 00119 ssd1306_command(SSD1306_SETMULTIPLEX); // 0xA8 00120 ssd1306_command(0x1F); 00121 ssd1306_command(SSD1306_SETDISPLAYOFFSET); // 0xD3 00122 ssd1306_command(0x0); // no offset 00123 ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0 00124 ssd1306_command(SSD1306_CHARGEPUMP); // 0x8D 00125 if (vccstate == SSD1306_EXTERNALVCC) 00126 { ssd1306_command(0x10); } 00127 else 00128 { ssd1306_command(0x14); } 00129 ssd1306_command(SSD1306_MEMORYMODE); // 0x20 00130 ssd1306_command(0x00); // 0x0 act like ks0108 00131 ssd1306_command(SSD1306_SEGREMAP | 0x1); 00132 ssd1306_command(SSD1306_COMSCANDEC); 00133 ssd1306_command(SSD1306_SETCOMPINS); // 0xDA 00134 ssd1306_command(0x02); 00135 ssd1306_command(SSD1306_SETCONTRAST); // 0x81 00136 ssd1306_command(0x8F); 00137 ssd1306_command(SSD1306_SETPRECHARGE); // 0xd9 00138 if (vccstate == SSD1306_EXTERNALVCC) 00139 { ssd1306_command(0x22); } 00140 else 00141 { ssd1306_command(0xF1); } 00142 ssd1306_command(SSD1306_SETVCOMDETECT); // 0xDB 00143 ssd1306_command(0x40); 00144 ssd1306_command(SSD1306_DISPLAYALLON_RESUME); // 0xA4 00145 ssd1306_command(SSD1306_NORMALDISPLAY); // 0xA6 00146 #endif 00147 00148 #if defined SSD1306_128_64 00149 // Init sequence for 128x64 OLED module 00150 ssd1306_command(SSD1306_DISPLAYOFF); // 0xAE 00151 ssd1306_command(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 00152 ssd1306_command(0x80); // the suggested ratio 0x80 00153 ssd1306_command(SSD1306_SETMULTIPLEX); // 0xA8 00154 ssd1306_command(0x3F); 00155 ssd1306_command(SSD1306_SETDISPLAYOFFSET); // 0xD3 00156 ssd1306_command(0x0); // no offset 00157 ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0 00158 ssd1306_command(SSD1306_CHARGEPUMP); // 0x8D 00159 if (vccstate == SSD1306_EXTERNALVCC) 00160 { ssd1306_command(0x10); } 00161 else 00162 { ssd1306_command(0x14); } 00163 ssd1306_command(SSD1306_MEMORYMODE); // 0x20 00164 ssd1306_command(0x00); // 0x0 act like ks0108 00165 ssd1306_command(SSD1306_SEGREMAP | 0x1); 00166 ssd1306_command(SSD1306_COMSCANDEC); 00167 ssd1306_command(SSD1306_SETCOMPINS); // 0xDA 00168 ssd1306_command(0x12); 00169 ssd1306_command(SSD1306_SETCONTRAST); // 0x81 00170 if (vccstate == SSD1306_EXTERNALVCC) 00171 { ssd1306_command(0x9F); } // Originally 0x9F 00172 else 00173 { ssd1306_command(0xCF); } // Originally 0xCF 00174 ssd1306_command(SSD1306_SETPRECHARGE); // 0xd9 00175 if (vccstate == SSD1306_EXTERNALVCC) 00176 { ssd1306_command(0x22); } 00177 else 00178 { ssd1306_command(0xF1); } 00179 ssd1306_command(SSD1306_SETVCOMDETECT); // 0xDB 00180 ssd1306_command(0x40); 00181 ssd1306_command(SSD1306_DISPLAYALLON_RESUME); // 0xA4 00182 ssd1306_command(SSD1306_NORMALDISPLAY); // 0xA6 00183 #endif 00184 00185 ssd1306_command(SSD1306_DISPLAYON);//--turn on oled panel 00186 } 00187 00188 // the most basic function, set a single pixel 00189 void Adafruit_SSD1306::drawPixel(int16_t x, int16_t y, uint16_t color) 00190 { 00191 if ((x < 0) || (x >= width()) || (y < 0) || (y >= height())) 00192 return; 00193 00194 // check rotation, move pixel around if necessary 00195 switch (getRotation()) 00196 { 00197 case 1: 00198 swap(x, y); 00199 x = _rawWidth - x - 1; 00200 break; 00201 case 2: 00202 x = _rawWidth - x - 1; 00203 y = _rawHeight - y - 1; 00204 break; 00205 case 3: 00206 swap(x, y); 00207 y = _rawHeight - y - 1; 00208 break; 00209 } 00210 00211 // x is which column 00212 if (color == WHITE) 00213 buffer[x+ (y/8)*SSD1306_LCDWIDTH] |= _BV((y%8)); 00214 else 00215 buffer[x+ (y/8)*SSD1306_LCDWIDTH] &= ~_BV((y%8)); 00216 } 00217 00218 void Adafruit_SSD1306::invertDisplay(bool i) 00219 { 00220 if (i) 00221 ssd1306_command(SSD1306_INVERTDISPLAY); 00222 else 00223 ssd1306_command(SSD1306_NORMALDISPLAY); 00224 } 00225 00226 void Adafruit_SSD1306::ssd1306_command(uint8_t c) 00227 { 00228 cs = 1; 00229 dc = 0; 00230 cs = 0; 00231 mspi.write(c); 00232 cs = 1; 00233 } 00234 00235 void Adafruit_SSD1306::ssd1306_data(uint8_t c) 00236 { 00237 cs = 1; 00238 dc = 1; 00239 cs = 0; 00240 mspi.write(c); 00241 cs = 1; 00242 } 00243 00244 void Adafruit_SSD1306::display(void) 00245 { 00246 ssd1306_command(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0 00247 ssd1306_command(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0 00248 ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0 00249 00250 cs = 1; 00251 dc = 1; 00252 cs = 0; 00253 00254 for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) 00255 mspi.write(buffer[i]); 00256 00257 // i wonder why we have to do this (check datasheet) 00258 if (SSD1306_LCDHEIGHT == 32) 00259 { 00260 for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) 00261 mspi.write(0); 00262 } 00263 00264 cs = 1; 00265 } 00266 00267 // clear everything 00268 void Adafruit_SSD1306::clearDisplay(void) 00269 { 00270 memset(buffer,0,sizeof(buffer)); 00271 }
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