ReceiverIR.h

00001 /**
00002  * IR receiver (Version 0.0.4)
00003  *
00004  * Copyright (C) 2010 Shinichiro Nakamura (CuBeatSystems)
00005  * http://shinta.main.jp/
00006  *
00007  * -------------------------------------------------------
00008  * 130616 suupen
00009  * IRC Helicopter "SWIFT" Propo support
00010  *  Conditional compilation 
00011  *      "SWIFT_PROTCOL"
00012  *      "IR_RAW_DATA_ANALYSIS"
00013  *      "ERRORWAIT" : recive error no fuuki taisaku
00014  *--------------------------------------------------------
00015  */
00016 
00017 #ifndef _RECEIVER_IR_H_
00018 #define _RECEIVER_IR_H_
00019 
00020 #include <mbed.h>
00021 
00022 #include "RemoteIR.h"
00023 
00024 //#define IR_RAW_DATA_ANALYSIS
00025 #define ERRORWAIT
00026 
00027 /**
00028  * IR receiver class.
00029  */
00030 class ReceiverIR {
00031 public:
00032 
00033     /**
00034      * Constructor.
00035      *
00036      * @param rxpin Pin for receive IR signal.
00037      */
00038     explicit ReceiverIR(PinName rxpin);
00039     
00040     /**
00041      * Destructor.
00042      */
00043     ~ReceiverIR();
00044 
00045     /**
00046      * State.
00047      */
00048     typedef enum {
00049         Idle,
00050         Receiving,
00051         Received,
00052 #ifdef ERRORWAIT        
00053         ErrorWait, 
00054 #endif // ERRORWAIT
00055     } State;
00056     
00057     /**
00058      * Get state.
00059      *
00060      * @return Current state.
00061      */
00062     State getState();
00063     
00064     /**
00065      * Get data.
00066      *
00067      * @param format Pointer to format.
00068      * @param buf Buffer of a data.
00069      * @param bitlength Bit length of the buffer.
00070      *
00071      * @return Data bit length.
00072      */
00073     int getData(RemoteIR::Format *format, uint8_t *buf, int bitlength);
00074     
00075 private:
00076     
00077     typedef struct {
00078         RemoteIR::Format format;
00079         int bitcount;
00080         uint8_t buffer[64];
00081     } data_t;
00082     
00083     typedef struct {
00084         State state;
00085         int c1;
00086         int c2;
00087         int c3;
00088         int d1;
00089         int d2;
00090     } work_t;
00091     
00092  #ifdef IR_RAW_DATA_ANALYSIS
00093     typedef struct {
00094         State state;
00095         int timecount[1000];   // Hi,Lo count (1/1 [us]/count)
00096         int bitcount;
00097     } check_t;
00098 #endif //IR_RAW_DATA_ANALYSIS
00099 
00100     InterruptIn evt;    /**< Interrupt based input for input. */
00101     Timer timer;        /**< Timer for WDT. */
00102     Ticker ticker;      /**< Tciker for tick. */
00103     Timeout timeout;    /**< Timeout for tail. */
00104 
00105     data_t data;
00106     work_t work;
00107  #ifdef IR_RAW_DATA_ANALYSIS
00108     check_t check;
00109 #endif //IR_RAW_DATA_ANALYSIS
00110    
00111     void init_state(void);
00112 
00113 #ifdef ERRORWAIT
00114     void errorWait(void);
00115 #endif // ERRORWAIT
00116 
00117     void isr_wdt(void);
00118     void isr_fall(void);
00119     void isr_rise(void);
00120     
00121     /**
00122      * ISR timeout for tail detection.
00123      */
00124     void isr_timeout(void);
00125 
00126 };
00127 
00128 #endif
00129