Diff: DigitDisplay.h

Revision:

0:d3173c8bfd48

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DigitDisplay.h	Sat Feb 08 05:42:09 2014 +0000
@@ -0,0 +1,96 @@
+/* The library of Grove - 4 Digit Display
+ *
+ * \author  Yihui Xiong
+ * \date    2014/2/8
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Seeed Technology Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * 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.
+ */
+
+#ifndef __DIGIT_DISPLAY__
+#define __DIGIT_DISPLAY__
+
+#include "mbed.h"
+
+class DigitDisplay
+{
+public:
+    DigitDisplay(PinName clk, PinName dio);
+    
+    /**
+     * Display a decimal number, A number larger than 10000 or smaller than -1000 will be truncated, MSB will be lost.
+     */
+    void write(int16_t number);
+    
+    /**
+     * Display four numbers
+     * \param   numbers     0 - 0xF:     0 - 9, A, b, C, d, E, F
+     *                      0x10 - 0xFE: '_'(unknown)
+     *                      0xFF:        ' '(null)
+     */
+    void write(uint8_t numbers[]);
+    
+    /**
+     * Display a number in a specific position
+     * \param   position    0 - 3, left to right
+     * \param   number      0 - 0xF:     0 - 9, A, b, C, d, E, F
+     *                      0x10 - 0xFE: '_'
+     *                      0xFF:        ' '
+     */
+    void write(uint8_t position, uint8_t number);
+    
+    void writeRaw(uint8_t position, uint8_t segments);
+    void writeRaw(uint8_t segments[]);
+    
+    void clear();
+    void on();
+    void off();
+    
+    /**
+     * Set the brightness, level 0 to level 7
+     */
+    void setBrightness(uint8_t brightness);
+    
+    /**
+     * Enable/Disable the colon
+     */
+    void setColon(bool enable);
+    
+    DigitDisplay& operator= (int16_t number) {
+        write(number);
+        return *this;
+    }
+    
+private:
+    void start();
+    bool send(uint8_t data);
+    void stop();
+    
+    DigitalOut   _clk;
+    DigitalInOut _dio;
+    bool         _off;
+    bool         _colon;
+    uint8_t      _brightness;
+    uint8_t      _content[4];
+};
+
+#endif // __DIGIT_DISPLAY__