DMX.h

00001 /*
00002  * DMX512 send/recv library
00003  * Copyright (c) 2013 Hiroshi Suga
00004  * Released under the MIT License: http://mbed.org/license/mit
00005  */
00006 
00007 /** @file
00008  * @brief DMX512 send/recv
00009  */
00010  
00011 #ifndef DMX_H
00012 #define DMX_H
00013 
00014 #include "mbed.h"
00015 #include "RawSerial.h"
00016 
00017 //#define DMX_UART_DIRECT
00018 
00019 #define DMX_SIZE        512
00020 #define DMX_START_CODE  0
00021 
00022 #define DMX_TIME_BREAK  100 // 100us (88us-1s)
00023 #define DMX_TIME_MAB    12 // 12us (8us-1s)
00024 #define DMX_TIME_MBB    200 // 10us (0-1s)
00025 
00026 enum DMX_MODE {
00027     DMX_MODE_BEGIN,
00028     DMX_MODE_START,
00029     DMX_MODE_BREAK,
00030     DMX_MODE_MAB,
00031     DMX_MODE_DATA,
00032     DMX_MODE_ERROR,
00033     DMX_MODE_STOP,
00034 };
00035 
00036 /** DMX512 class (sender/client)
00037  */
00038 class DMX {
00039 public:
00040     /** init DMX class
00041      * @param p_tx TX serial port (p9, p13, p28)
00042      * @param p_rx RX serial port (p10, p14, p27)
00043      */
00044     DMX (PinName p_tx, PinName p_rx); 
00045 
00046     /** Send the data
00047      * @param addr DMX data address (0-511)
00048      * @param data DMX data (0-255)
00049      */
00050     void put (int addr, int data);
00051     /** Send the data
00052      * @param buf DMX data buffer
00053      * @param addr DMX data address
00054      * @param len data length
00055      */
00056     void put (unsigned char *buf, int addr = 0, int len = DMX_SIZE);
00057 
00058     /** Send the data
00059      * @param addr DMX data address (0-511)
00060      * @return DMX data (0-255)
00061      */
00062     int get (int addr);
00063     /** Send the data
00064      * @param buf DMX data buffer
00065      * @param addr DMX data address
00066      * @param len data length
00067      */
00068     void get (unsigned char *buf, int addr = 0, int len = DMX_SIZE);
00069 
00070     /** Start DMX send operation
00071      */
00072     void start ();
00073     /** Stop DMX send operation
00074      */
00075     void stop ();
00076     /** Clear DMX data
00077      */
00078     void clear ();
00079 
00080     int isReceived ();
00081     int isSent ();
00082     unsigned char *getRxBuffer ();
00083     unsigned char *getTxBuffer ();
00084     int setTimingParameters (int breaktime, int mab, int mbb);
00085     
00086     void attach(void (*function)(void));
00087 
00088 protected:
00089 
00090     void int_timer ();
00091     void int_tx ();
00092     void int_rx ();
00093     void on_received();
00094 
00095 //    Serial _dmx;
00096     RawSerial _dmx;
00097     Timeout timeout01;
00098     volatile DMX_MODE mode_tx, mode_rx;
00099     volatile int addr_tx, addr_rx;
00100     unsigned char data_tx[DMX_SIZE];
00101     unsigned char data_rx_working[DMX_SIZE];
00102     unsigned char data_rx[DMX_SIZE];
00103     int is_received, is_sent;
00104     int time_break, time_mab, time_mbb;
00105     Callback<void()> on_rx;
00106 
00107 private:
00108 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368) || defined(TARGET_LPC4088)
00109     LPC_UART_TypeDef *_uart;
00110 #elif defined(TARGET_LPC11UXX)
00111     LPC_USART_Type *_uart;
00112 #elif defined(TARGET_LPC11XX)
00113     LPC_UART_TypeDef *_uart;
00114 #elif defined(TARGET_STM)
00115     USART_TypeDef *_uart;
00116 #else
00117 #error "this CPU not supported."
00118 #endif
00119 
00120 };
00121 
00122 #endif