Christian Taedcke
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Adafruit_GFX
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Adafruit_GFX
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Neal Horman
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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 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 00031 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00032 0x00, 0x80, 0x80, 0xC0, 0xC0, 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, 0x00, 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, 0x80, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xF8, 0xE0, 0x00, 0x00, 0x00, 0x00, 00037 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 00038 0x80, 0x80, 0x00, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0xFF, 00039 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 00040 0x80, 0xFF, 0xFF, 0x80, 0x80, 0x00, 0x80, 0x80, 0x00, 0x80, 0x80, 0x80, 0x80, 0x00, 0x80, 0x80, 00041 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x8C, 0x8E, 0x84, 0x00, 0x00, 0x80, 0xF8, 00042 0xF8, 0xF8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00043 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xE0, 0xE0, 0xC0, 0x80, 00044 0x00, 0xE0, 0xFC, 0xFE, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 00045 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFF, 0xC7, 0x01, 0x01, 00046 0x01, 0x01, 0x83, 0xFF, 0xFF, 0x00, 0x00, 0x7C, 0xFE, 0xC7, 0x01, 0x01, 0x01, 0x01, 0x83, 0xFF, 00047 0xFF, 0xFF, 0x00, 0x38, 0xFE, 0xC7, 0x83, 0x01, 0x01, 0x01, 0x83, 0xC7, 0xFF, 0xFF, 0x00, 0x00, 00048 0x01, 0xFF, 0xFF, 0x01, 0x01, 0x00, 0xFF, 0xFF, 0x07, 0x01, 0x01, 0x01, 0x00, 0x00, 0x7F, 0xFF, 00049 0x80, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x7F, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x01, 0xFF, 00050 0xFF, 0xFF, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00051 0x03, 0x0F, 0x3F, 0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE7, 0xC7, 0xC7, 0x8F, 00052 0x8F, 0x9F, 0xBF, 0xFF, 0xFF, 0xC3, 0xC0, 0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xFC, 0xFC, 00053 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xF8, 0xF8, 0xF0, 0xF0, 0xE0, 0xC0, 0x00, 0x01, 0x03, 0x03, 0x03, 00054 0x03, 0x03, 0x01, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01, 00055 0x03, 0x01, 0x00, 0x00, 0x00, 0x01, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01, 0x03, 0x03, 0x00, 0x00, 00056 0x00, 0x03, 0x03, 0x00, 0x00, 0x00, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 00057 0x03, 0x03, 0x03, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x01, 0x03, 0x01, 0x00, 0x00, 0x00, 0x03, 00058 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00059 #if (SSD1306_LCDHEIGHT == 64) 00060 0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0xF0, 0xF9, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x1F, 0x0F, 00061 0x87, 0xC7, 0xF7, 0xFF, 0xFF, 0x1F, 0x1F, 0x3D, 0xFC, 0xF8, 0xF8, 0xF8, 0xF8, 0x7C, 0x7D, 0xFF, 00062 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x0F, 0x07, 0x00, 0x30, 0x30, 0x00, 0x00, 00063 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00064 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFE, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00065 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0xC0, 0x00, 00066 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 00067 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00068 0x00, 0xC0, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x7F, 0x3F, 0x1F, 00069 0x0F, 0x07, 0x1F, 0x7F, 0xFF, 0xFF, 0xF8, 0xF8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xF8, 0xE0, 00070 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00, 00071 0x00, 0xFC, 0xFE, 0xFC, 0x0C, 0x06, 0x06, 0x0E, 0xFC, 0xF8, 0x00, 0x00, 0xF0, 0xF8, 0x1C, 0x0E, 00072 0x06, 0x06, 0x06, 0x0C, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00, 0x00, 0x00, 0xFC, 00073 0xFE, 0xFC, 0x00, 0x18, 0x3C, 0x7E, 0x66, 0xE6, 0xCE, 0x84, 0x00, 0x00, 0x06, 0xFF, 0xFF, 0x06, 00074 0x06, 0xFC, 0xFE, 0xFC, 0x0C, 0x06, 0x06, 0x06, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00, 0xC0, 0xF8, 00075 0xFC, 0x4E, 0x46, 0x46, 0x46, 0x4E, 0x7C, 0x78, 0x40, 0x18, 0x3C, 0x76, 0xE6, 0xCE, 0xCC, 0x80, 00076 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00077 0x00, 0x00, 0x00, 0x00, 0x01, 0x07, 0x0F, 0x1F, 0x1F, 0x3F, 0x3F, 0x3F, 0x3F, 0x1F, 0x0F, 0x03, 00078 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00, 00079 0x00, 0x0F, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00, 0x03, 0x07, 0x0E, 0x0C, 00080 0x18, 0x18, 0x0C, 0x06, 0x0F, 0x0F, 0x0F, 0x00, 0x00, 0x01, 0x0F, 0x0E, 0x0C, 0x18, 0x0C, 0x0F, 00081 0x07, 0x01, 0x00, 0x04, 0x0E, 0x0C, 0x18, 0x0C, 0x0F, 0x07, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 00082 0x00, 0x0F, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x07, 00083 0x07, 0x0C, 0x0C, 0x18, 0x1C, 0x0C, 0x06, 0x06, 0x00, 0x04, 0x0E, 0x0C, 0x18, 0x0C, 0x0F, 0x07, 00084 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00085 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00086 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00087 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00088 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00089 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00090 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 00091 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 00092 #endif 00093 }; 00094 00095 Adafruit_SSD1306::Adafruit_SSD1306(SPI &spi, PinName DC, PinName RST, PinName CS) 00096 : Adafruit_GFX(SSD1306_LCDWIDTH, SSD1306_LCDHEIGHT) 00097 , rst(RST,false), cs(CS,true), dc(DC,false), mspi(spi) 00098 { 00099 memcpy(buffer,splashScreen,sizeof(buffer)); 00100 begin(); 00101 display(); 00102 }; 00103 00104 void Adafruit_SSD1306::begin(uint8_t vccstate) 00105 { 00106 rst = 1; 00107 // VDD (3.3V) goes high at start, lets just chill for a ms 00108 wait_ms(1); 00109 // bring reset low 00110 rst = 0; 00111 // wait 10ms 00112 wait_ms(10); 00113 // bring out of reset 00114 rst = 1; 00115 // turn on VCC (9V?) 00116 00117 #if defined SSD1306_128_32 00118 uint8_t setmultiplex = 0x1F; 00119 uint8_t setcompins = 0x02; 00120 uint8_t setcontrast = 0x8F; 00121 #elif defined SSD1306_128_64 00122 uint8_t setmultiplex = 0x3F; 00123 uint8_t setcompins = 0x12; 00124 uint8_t setcontrast = (vccstate == SSD1306_EXTERNALVCC) ? 0x9F : 0xCF; 00125 #else 00126 #error "Display dimensions must be defined" 00127 #endif 00128 00129 ssd1306_command(SSD1306_DISPLAYOFF); // 0xAE 00130 ssd1306_command(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 00131 ssd1306_command(0x80); // the suggested ratio 0x80 00132 ssd1306_command(SSD1306_SETMULTIPLEX); // 0xA8 00133 ssd1306_command(setmultiplex); 00134 ssd1306_command(SSD1306_SETDISPLAYOFFSET); // 0xD3 00135 ssd1306_command(0x0); // no offset 00136 ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0 00137 ssd1306_command(SSD1306_CHARGEPUMP); // 0x8D 00138 if (vccstate == SSD1306_EXTERNALVCC) 00139 { ssd1306_command(0x10); } 00140 else 00141 { ssd1306_command(0x14); } 00142 ssd1306_command(SSD1306_MEMORYMODE); // 0x20 00143 ssd1306_command(0x00); // 0x0 act like ks0108 00144 ssd1306_command(SSD1306_SEGREMAP | 0x1); 00145 ssd1306_command(SSD1306_COMSCANDEC); 00146 ssd1306_command(SSD1306_SETCOMPINS); // 0xDA 00147 ssd1306_command(setcompins); 00148 ssd1306_command(SSD1306_SETCONTRAST); // 0x81 00149 ssd1306_command(setcontrast); 00150 ssd1306_command(SSD1306_SETPRECHARGE); // 0xd9 00151 if (vccstate == SSD1306_EXTERNALVCC) 00152 { ssd1306_command(0x22); } 00153 else 00154 { ssd1306_command(0xF1); } 00155 ssd1306_command(SSD1306_SETVCOMDETECT); // 0xDB 00156 ssd1306_command(0x40); 00157 ssd1306_command(SSD1306_DISPLAYALLON_RESUME); // 0xA4 00158 ssd1306_command(SSD1306_NORMALDISPLAY); // 0xA6 00159 00160 ssd1306_command(SSD1306_DISPLAYON);//--turn on oled panel 00161 } 00162 00163 // the most basic function, set a single pixel 00164 void Adafruit_SSD1306::drawPixel(int16_t x, int16_t y, uint16_t color) 00165 { 00166 if ((x < 0) || (x >= width()) || (y < 0) || (y >= height())) 00167 return; 00168 00169 // check rotation, move pixel around if necessary 00170 switch (getRotation()) 00171 { 00172 case 1: 00173 swap(x, y); 00174 x = _rawWidth - x - 1; 00175 break; 00176 case 2: 00177 x = _rawWidth - x - 1; 00178 y = _rawHeight - y - 1; 00179 break; 00180 case 3: 00181 swap(x, y); 00182 y = _rawHeight - y - 1; 00183 break; 00184 } 00185 00186 // x is which column 00187 if (color == WHITE) 00188 buffer[x+ (y/8)*SSD1306_LCDWIDTH] |= _BV((y%8)); 00189 else 00190 buffer[x+ (y/8)*SSD1306_LCDWIDTH] &= ~_BV((y%8)); 00191 } 00192 00193 void Adafruit_SSD1306::invertDisplay(bool i) 00194 { 00195 if (i) 00196 ssd1306_command(SSD1306_INVERTDISPLAY); 00197 else 00198 ssd1306_command(SSD1306_NORMALDISPLAY); 00199 } 00200 00201 void Adafruit_SSD1306::ssd1306_command(uint8_t c) 00202 { 00203 cs = 1; 00204 dc = 0; 00205 cs = 0; 00206 mspi.write(c); 00207 cs = 1; 00208 } 00209 00210 void Adafruit_SSD1306::ssd1306_data(uint8_t c) 00211 { 00212 cs = 1; 00213 dc = 1; 00214 cs = 0; 00215 mspi.write(c); 00216 cs = 1; 00217 } 00218 00219 void Adafruit_SSD1306::display(void) 00220 { 00221 ssd1306_command(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0 00222 ssd1306_command(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0 00223 ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0 00224 00225 cs = 1; 00226 dc = 1; 00227 cs = 0; 00228 00229 for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) 00230 mspi.write(buffer[i]); 00231 00232 // i wonder why we have to do this (check datasheet) 00233 if (SSD1306_LCDHEIGHT == 32) 00234 { 00235 for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) 00236 mspi.write(0); 00237 } 00238 00239 cs = 1; 00240 } 00241 00242 // clear everything 00243 void Adafruit_SSD1306::clearDisplay(void) 00244 { 00245 memset(buffer,0,sizeof(buffer)); 00246 }
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