GraphicOLED.h

00001 // GraphicOLED.h
00002 #pragma once
00003 #include "mbed.h"
00004 
00005 /** GraphicOLED interface for WS0010
00006  *
00007  * Currently support UTF-8 KANJI(misaki font) 
00008  *
00009  * @code
00010  * #include "mbed.h"
00011  * #include "GraphicOLED.h"
00012  * 
00013  * GraphicOLED oled(p24, p26, p27, p28, p29, p30); // rs, e, d4-d7
00014  * 
00015  * int main() {
00016  *     oled.printf("Hello World!\n");
00017  * }
00018  * @endcode
00019  */
00020 class GraphicOLED : public Stream {
00021 public:
00022     /** Create a GraphicOLED interface
00023      *
00024      * @param rs    Instruction/data control line
00025      * @param e     Enable line (clock)
00026      * @param d4-d7 Data lines for using as a 4-bit interface
00027      */
00028     GraphicOLED(PinName rs, PinName e, PinName d4, PinName d5, PinName d6, PinName d7);
00029 
00030 #if DOXYGEN_ONLY
00031     /** Write a character to the OLED
00032      *
00033      * @param c The character to write to the display
00034      */
00035     int putc(int c);
00036 
00037     /** Write a formated string to the OLED
00038      *
00039      * @param format A printf-style format string, followed by the
00040      *               variables to use in formating the string.
00041      */
00042     int printf(const char* format, ...);
00043 #endif
00044 
00045     /** Locate to a screen column and row
00046      *
00047      * @param column  The horizontal position from the left, indexed from 0
00048      * @param row     The vertical position from the top, indexed from 0
00049      */
00050     void locate(int column, int row);
00051 
00052     /** Clear the screen and locate to 0,0 */
00053     void cls();
00054 
00055     int rows();
00056     int columns();
00057 
00058     void g_write(uint8_t pat, int x, int y);
00059     void g_write(uint8_t *buf, int len, int x, int y);
00060        
00061 private:
00062     int _uni_len;
00063     uint32_t _unicode;
00064 
00065     // Stream implementation functions
00066     virtual int _putc(int value);
00067     virtual int _getc();
00068 
00069     int character(int column, int row, int c);
00070     void writeByte(uint8_t value);
00071     void writeCommand(uint8_t command);
00072     void writeData(uint8_t data);
00073 
00074     DigitalOut _rs, _e;
00075     BusOut _d;
00076 
00077     int _column;
00078     int _row;
00079 };
00080