EaPaper Library for EM027BS013
Dependencies: EM027BS013 TFT_fonts
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Diff: EaEpaper.h
- Revision:
- 0:fedcef5319f5
- Child:
- 1:90d18805a8a4
diff -r 000000000000 -r fedcef5319f5 EaEpaper.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EaEpaper.h Sat Nov 09 23:37:43 2013 +0000 @@ -0,0 +1,260 @@ +/* mbed library for 264*176 pixel 2.7 INCH E-PAPER DISPLAY from Pervasive Displays + * Copyright (c) 2013 Peter Drescher - DC2PD + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + + +// 09.11.2013 initial Version + +#ifndef EAEPAPER_H +#define EAEPAPER_H + +/** + * Includes + */ +#include "mbed.h" +#include "EPD.h" +#include "GraphicsDisplay.h" + +// we have to double buffer the display +#define EA_IMG_BUF_SZ (5808) // 264 x 176 / 8 = 5808 + +/** Draw mode + * NORMAl + * XOR set pixel by xor of the screen + */ +enum {NORMAL,XOR}; + +/** Bitmap + */ +struct Bitmap{ + int xSize; + int ySize; + int Byte_in_Line; + char* data; + }; + +/* color definitions */ +#define Black 0x0 +#define White 0x1 + +/** Display control class, based on GraphicsDisplay and TextDisplay + * + * Example: + * @code + * #include "mbed.h" + * #include "EaEpaper.h" + * #include "Arial28x28.h" + * #include "Arial12x12.h" + * #include "font_big.h" + * #include "graphics.h" + + * // the E-Paper board from embedded artists has a LM75 temp sensor to compensate the temperature effect. If it is cold the display reacts slower. + * // The LM75 need a I2C -> 2 pins : sda and scl + * // The display data is written via SPI -> 3 pins : mosi,miso,sck + * // There are also some control signals + * // The pwm pin has to be connected to a PWM enabled pin : pwm + * // The other signals are connected to normal IO`s + * // + * EaEpaper epaper(PTD7, // PWR_CTRL + * PTD6, // BORDER + * PTE31, // DISCHARGE + * PTA17, // RESET_DISP + * PTA16, // BUSY + * PTC17, // SSEL + * PTD4, // PWM + * PTD2,PTD3,PTD1, // MOSI,MISO,SCLK + * PTE0,PTE1); // SDA,SDL + * + * int main() { + * + * epaper.cls(); // clear screen + * epaper.set_font((unsigned char*) Arial28x28); // select the font + * epaper.locate(5,20); // set cursor + * epaper.printf("Hello Mbed"); // print text + * epaper.rect(3,15,150,50,1); // draw frame + * epaper.write_disp(); // update screen + * + * @endcode + */ + + +class EaEpaper : public GraphicsDisplay { + +public: + + /** + * Constructor. + */ + EaEpaper(PinName p_on, PinName border, PinName discharge, PinName reset, PinName busy, PinName cs, // IO-Pins + PinName pwm, // PWM Pin + PinName mosi, PinName miso, PinName sck, // SPI + PinName sda, PinName scl, // I2C + const char* name ="E_Paper"); + + /** Get the width of the screen in pixel + * + * @param + * @returns width of screen in pixel + * + */ + virtual int width(); + + /** Get the height of the screen in pixel + * + * @returns height of screen in pixel + * + */ + virtual int height(); + + + /** + * Clear the display + */ + void clear(); + + /** + * Write image buffer to display + */ + void write_disp(void); + + /** + * set or reset a single pixel + * + * @param x horizontal position + * @param y vertical position + * @param color : 0 white, 1 black + */ + virtual void pixel(int x, int y, int color); + + /** Fill the screen with white + * + */ + virtual void cls(void); + + /** draw a 1 pixel line + * + * @param x0,y0 start point + * @param x1,y1 stop point + * @param color : 0 white, 1 black + */ + void line(int x0, int y0, int x1, int y1, int color); + + /** draw a rect + * + * @param x0,y0 top left corner + * @param x1,y1 down right corner + * @param color : 0 white, 1 black + */ + void rect(int x0, int y0, int x1, int y1, int color); + + /** draw a filled rect + * + * @param x0,y0 top left corner + * @param x1,y1 down right corner + * @param color : 0 white, 1 black + */ + void fillrect(int x0, int y0, int x1, int y1, int color); + + /** draw a circle + * + * @param x0,y0 center + * @param r radius + * @param color : 0 white, 1 black * + */ + void circle(int x0, int y0, int r, int color); + + /** draw a filled circle + * + * @param x0,y0 center + * @param r radius + * @param color : 0 white, 1 black * + */ + void fillcircle(int x0, int y0, int r, int color); + + /** set drawing mode + * @param NORMAL : paint normal color, XOR : paint XOR of current pixels + */ + void setmode(int mode); + + /** setup cursor position + * + * @param x x-position (top left) + * @param y y-position + */ + virtual void locate(int x, int y); + + /** calculate the max number of char in a line + * + * @returns max columns + * depends on actual font size + */ + virtual int columns(); + + /** calculate the max number of columns + * + * @returns max column + * depends on actual font size + */ + virtual int rows(); + + /** put a char on the screen + * + * @param value char to print + * @returns printed char + */ + virtual int _putc(int value); + + /** paint a character on given position out of the active font to the screen buffer + * + * @param x x-position (top left) + * @param y y-position + * @param c char code + */ + virtual void character(int x, int y, int c); + + /** select the font to use + * + * @param f pointer to font array + * + * font array can created with GLCD Font Creator from http://www.mikroe.com + * you have to add 4 parameter at the beginning of the font array to use: + * - the number of byte / char + * - the vertial size in pixel + * - the horizontal size in pixel + * - the number of byte per vertical line + * you also have to change the array to char[] + */ + void set_font(unsigned char* f); + + /** print bitmap to buffer + * + * @param bm struct Bitmap in flash + * @param x x start + * @param y y start + * + */ + void print_bm(Bitmap bm, int x, int y); + + + unsigned char* font; + unsigned int draw_mode; + + private: + + EPD_Class epd_; + I2C i2c_; + unsigned int char_x; + unsigned int char_y; + int32_t readTemperature(); + +}; + + #endif /* EAEPAPER_H */ \ No newline at end of file