LTC_SMPTE.h

00001 /**
00002  * SMPTE timedode (LTC) decode library for mbed
00003  * Copyright (c) 2015 Suga
00004  * Released under the MIT License: http://mbed.org/license/mit
00005  */
00006 /** @file
00007  * @brief SMPTE timedode (LTC) decode library for mbed
00008  */
00009 
00010 #ifndef _LTC_SMPTE_H_
00011 #define _LTC_SMPTE_H_
00012 
00013 #include "mbed.h"
00014 
00015 class LTC_SMPTE {
00016 public:
00017     enum LTC_TYPE {
00018         LTC_INPUT,
00019         LTC_OUTPUT
00020     };
00021 
00022     LTC_SMPTE (PinName pin, enum LTC_TYPE type = LTC_INPUT);
00023 
00024     void read (int *hour, int *min, int *sec, int *frame, int *dir = NULL);
00025     int isReceived ();
00026 
00027     void write (int hour, int min, int sec, int frame, int dir = 0);
00028 
00029     static LTC_SMPTE *_inst;
00030     void isr_ticker ();
00031 
00032 protected:
00033     InterruptIn *_input;
00034     Timer _timer;
00035     DigitalOut *_output;
00036 
00037     int mode;
00038     int oneflg;
00039     int count;
00040     int bit;
00041     char code[10];
00042     int hour, min, sec, frame;
00043     int drop, direction, fps;
00044     int received;
00045 
00046     enum LTC_TYPE type;
00047     int phase, zeroflg;
00048 
00049     void isr_change ();
00050     void parse_code ();
00051 
00052 };
00053 
00054 #endif