Diff: Drivers/SSD1351_SPI.h

Revision:

2:bbfc18022ee5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Drivers/SSD1351_SPI.h	Tue May 27 20:05:29 2014 +0000
@@ -0,0 +1,126 @@
+/* NeatGUI Library
+ * Copyright (c) 2013 Neil Thiessen
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SSD1351_SPI_H
+#define SSD1351_SPI_H
+
+#include "mbed.h"
+#include "Display.h"
+
+/** SSD1351_SPI class.
+ *  Used for controlling an SSD1351-based OLED display connected to SPI.
+ */
+class SSD1351_SPI : public Display
+{
+public:
+
+    /** Create an SSD1351 object connected to the specified SPI pins with the specified /CS and DC pins
+     *
+     * @param mosi The SPI data out pin.
+     * @param miso The SPI data in pin.
+     * @param sclk The SPI clock pin.
+     * @param cs The SPI chip select pin.
+     * @param dc The data/command pin.
+     */
+    SSD1351_SPI(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName dc);
+
+    /** Probe for the SSD1351 and initialize it if present
+     *
+     * @returns
+     *   'true' if the device exists on the bus,
+     *   'false' if the device doesn't exist on the bus.
+     */
+    virtual bool open();
+
+    /** Send the buffer to the SSD1351
+     */
+    virtual void flush();
+
+    /** Get the current state of the SSD1351
+     *
+     * @returns The current state as a Display::State enum.
+     */
+    virtual Display::State state();
+
+    /** Set the state of the SSD1351
+     *
+     * @param mode The new state as a Display::State enum.
+     */
+    virtual void state(State s);
+
+    /** Draw a single pixel at the specified coordinates
+    *
+    * @param x The X coordinate.
+    * @param y The Y coordinate.
+    * @param c The color of the pixel as a 32-bit ARGB value.
+    */
+    virtual void drawPixel(int x, int y, unsigned int c);
+
+private:
+    //Commands
+    enum Command {
+        CMD_SETCOLUMN       = 0x15,
+        CMD_SETROW          = 0x75,
+        CMD_WRITERAM        = 0x5C,
+        CMD_READRAM         = 0x5D,
+        CMD_SETREMAP        = 0xA0,
+        CMD_STARTLINE       = 0xA1,
+        CMD_DISPLAYOFFSET   = 0xA2,
+        CMD_DISPLAYALLOFF   = 0xA4,
+        CMD_DISPLAYALLON    = 0xA5,
+        CMD_NORMALDISPLAY   = 0xA6,
+        CMD_INVERTDISPLAY   = 0xA7,
+        CMD_FUNCTIONSELECT  = 0xAB,
+        CMD_DISPLAYOFF      = 0xAE,
+        CMD_DISPLAYON       = 0xAF,
+        CMD_PRECHARGE       = 0xB1,
+        CMD_DISPLAYENHANCE  = 0xB2,
+        CMD_CLOCKDIV        = 0xB3,
+        CMD_SETVSL          = 0xB4,
+        CMD_SETGPIO         = 0xB5,
+        CMD_PRECHARGE2      = 0xB6,
+        CMD_SETGRAY         = 0xB8,
+        CMD_USELUT          = 0xB9,
+        CMD_PRECHARGELEVEL  = 0xBB,
+        CMD_VCOMH           = 0xBE,
+        CMD_CONTRASTABC     = 0xC1,
+        CMD_CONTRASTMASTER  = 0xC7,
+        CMD_MUXRATIO        = 0xCA,
+        CMD_COMMANDLOCK     = 0xFD,
+        CMD_HORIZSCROLL     = 0x96,
+        CMD_STOPSCROLL      = 0x9E,
+        CMD_STARTSCROLL     = 0x9F
+    };
+
+    //SPI interface variables
+    SPI m_SPI;
+    DigitalOut m_CS;
+    DigitalOut m_DC;
+
+    //Caching variables
+    int m_StartX;
+    int m_StartY;
+    int m_CursX;
+    int m_CursY;
+    char m_Cache[1024];
+    int m_CacheIndex;
+
+    //Command and data helpers
+    void writeCommand(char command);
+    void writeData(char data);
+};
+
+#endif