Diff: Spi7Seg.h

Revision:

0:f0806724e7c9

Child:

1:fcb72bd26532

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Spi7Seg.h	Fri Jan 30 21:05:27 2015 +0000
@@ -0,0 +1,193 @@
+/*
+  SpiLED.h - mbed library for Serial seven segment LED driver.
+  This library is for Serial-in pararel-out shift register (HC595) and 7 Segiemnt LED module 
+  Copyright 20145 by morecat_lab
+   
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+*/
+
+#ifndef SPI7SEG_H
+#define SPI7SEG_H
+
+#include <Timer.h>
+#include "mbed.h"
+
+// LED PIN ASSIGN
+//
+// P G F E D C B A
+//
+//   A
+//   --
+// F|__|B
+// E|G |C
+//   --   .P
+//   D
+
+#define NUM_PAT_0 0xc0
+#define NUM_PAT_1 0xf9
+#define NUM_PAT_2 0xa4
+#define NUM_PAT_3 0xb0
+#define NUM_PAT_4 0x99
+#define NUM_PAT_5 0x92
+#define NUM_PAT_6 0x82
+#define NUM_PAT_7 0xf8
+#define NUM_PAT_8 0x80
+#define NUM_PAT_9 0x90
+#define NUM_PAT_A 0x88
+#define NUM_PAT_B 0x83
+#define NUM_PAT_C 0xa7
+#define NUM_PAT_D 0xa1
+#define NUM_PAT_E 0x86
+#define NUM_PAT_F 0x8e
+
+/**
+ * Spi Seven segment LED driver library (8 digit)
+ */
+class Spi7Seg
+{
+private:
+    DigitalOut _dataPin, _clockPin, _ratchPin;
+    char _buffer[8];
+    int _numOfDigs;
+    bool _zeroSupress;
+    Timer timer;
+public:
+    static const int numConv[16];
+    /**
+     * create an 8 digit SPI driven seven segment driver
+     *
+     * @param PinName a Pin No for segment data
+     * @param PinName b Pin No for segment clock
+     * @param PinName c Pin No for segment ratch
+     */
+    Spi7Seg(PinName data,PinName clock,PinName ratch);
+   
+    /**
+     * start driver
+     */
+    void begin(void);
+
+    /**
+     * get a charcter pattern from a number
+     *
+     * @param i number
+     *
+     * @returns bit pattern of number i
+     *
+     */
+    char segCh(char i);
+
+    /**
+     * turn on DP 
+     *
+     * @param d dight
+     *
+     */
+    void setDot(int d);
+
+    /**
+     * turn off DP 
+     *
+     * @param d dight
+     *
+     */
+    void clearDot(int d);
+    
+    /**
+     * write a number to LED 
+     *
+     * @param n number
+     *
+     */
+    void writeNum(long n);
+
+    /**
+     * write numbers to each dight of 8 dight LED 
+     *
+     * @param d1 digit 1 number
+     * @param d2 digit 2 number
+     * @param d3 digit 3 number
+     * @param d4 digit 4 number
+     * @param d5 digit 5 number
+     * @param d6 digit 6 number
+     * @param d7 digit 7 number
+     * @param d8 digit 8 number
+     *
+     */
+    void writeNum(char d1, char d2, char d3, char d4, char d5, char d6, char d7, char d8);
+
+    /**
+     * zero supress: tell driver not to display 0 in the left
+     *
+     */
+    void supressZero();
+
+    /**
+     * control zero supress bit
+     *
+     * @param t, 1:supress on, 0:supress off
+     *
+     */
+    void setZeroSupress(bool t);
+
+    /**
+     * write hex number to LED
+     *
+     * @param n (long)number
+     *
+     */
+    void writeHex(long n);
+
+    /**
+     * write patterns to each dight of 8 dight LED 
+     *
+     * @param d1 digit 1 pattern
+     * @param d2 digit 2 pattern
+     * @param d3 digit 3 pattern
+     * @param d4 digit 4 pattern
+     * @param d5 digit 5 pattern
+     * @param d6 digit 6 pattern
+     * @param d7 digit 7 pattern
+     * @param d8 digit 8 pattern
+     *
+     */
+    void writeRawData(char d1, char d2, char d3, char d4, char d5, char d6, char d7, char d8);
+
+    void write(uint8_t x, uint8_t y, uint8_t value);
+
+    /**
+     * write patterns to a dight 
+     *
+     * @param d digit
+     *
+     * @param value pattern
+     *
+     */
+    void write(uint8_t d, uint8_t value);
+ 
+    /**
+     * Clear LED buffer
+     */
+    void clear(void);
+    
+    /**
+     * Update LED (by internal clock)
+     *
+     * @returns sync = 1, if digit == 0
+     *
+     */
+    void update(void);
+
+    /**
+     * keep updating LED for specified period
+     *
+     * @param ms period (ms)
+     *
+     */
+    void updateWithDelay(int ms);
+
+};
+
+#endif  // SPI7SEG.h