Diff: LEDMatrix.h

Revision:

0:13728deac7a7

Child:

1:79cf2e115449

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LEDMatrix.h	Fri Nov 08 06:45:52 2013 +0000
@@ -0,0 +1,89 @@
+/**
+ * LED Matrix library for http://www.seeedstudio.com/depot/ultrathin-16x32-red-led-matrix-panel-p-1582.html
+ * The LED Matrix panel has 32x16 pixels. Several panel can be combined together as a large screen.
+ * 
+ * Coordinate & Connection (mbed -> panel 0 -> panel 1 -> ...)
+ *   (0, 0)                                     (0, 0)
+ *     +--------+--------+--------+               +--------+--------+
+ *     |   5    |    3   |    1   |               |    1   |    0   |
+ *     |        |        |        |               |        |        |<----- mbed
+ *     +--------+--------+--------+               +--------+--------+
+ *     |   4    |    2   |    0   |                              (64, 16)
+ *     |        |        |        |<----- mbed
+ *     +--------+--------+--------+
+ *                             (96, 32)
+ *  Copyright (c) 2013 Seeed Technology Inc.
+ *  @auther     Yihui Xiong
+ *  @date       Nov 7, 2013
+ *  @license    Apache
+ */
+
+
+#ifndef __LED_MATRIX_H__
+#define __LED_MATRIX_H__
+
+#include "mbed.h"
+
+class LEDMatrix {
+public:
+    LEDMatrix(PinName pinA, PinName pinB, PinName pinC, PinName pinD, PinName pinOE, PinName pinR1, PinName pinSTB, PinName pinCLK);
+    
+    /**
+     * set the display's display buffer and number, the buffer's size must be not less than 512 * number / 8 bytes
+     * @param displaybuf    display buffer
+     * @param number        panels' number
+     */
+    void begin(uint8_t *displaybuf, uint16_t width, uint16_t height);
+
+    /**
+     * draw a point
+     * @param x     x
+     * @param y     y
+     * @param pixel 0: led off, >0: led on
+     */
+    void drawPoint(uint16_t x, uint16_t y, uint8_t pixel);
+
+    /**
+     * draw a rect
+     * @param (x1, y1)   top-left position
+     * @param (x2, y2)   bottom-right position, not included in the rect
+     * @param pixel      0: rect off, >0: rect on
+     */
+    void drawRect(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint8_t pixel);
+
+    /**
+     * draw a image
+     * @param (x1, y1)   top-left position
+     * @param (x2, y2)   bottom-right position, not included in the rect
+     * @param pixels     contents, 1 bit to 1 led
+     */
+    void drawImage(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint8_t *image);
+
+    /**
+     * Set screen buffer to zero
+     */
+    void clear();
+
+    /**
+     * turn off 1/16 leds and turn on another 1/16 leds
+     */
+    void scan();
+
+    void reverse();
+
+    uint8_t isReversed();
+
+    void on();
+
+    void off();
+
+private:
+    DigitalOut a, b, c, d, oe, r1, stb, clk;
+    uint8_t *displaybuf;
+    uint16_t width;
+    uint16_t height;
+    uint8_t  mask;
+    uint8_t  state;
+};
+
+#endif