Adafruit_GFX - A derived version of the BSD licensed Adafrut GFX…

GGTA team » Code » Adafruit_GFX
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.
Fork of Adafruit_GFX by Neal Horman
Diff: Adafruit_SSD1306.cpp

Revision:: 0:c3dcd4c4983a
Child:: 4:853097cfa773
--- /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));
+}
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Type:	Library
Created:	19 Apr 2015
Imports:	12
Forks:	0
Commits:	20
Dependents:	0
Dependencies:	0
Followers:	3
Diff: Adafruit_SSD1306.cpp

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