Karl Zweimüller
Program for decoding radio-signals sent by a ETH-Window-Shutter-Contact, received with a RFM12B-module. The messages are sent to KNX via a freebus rs-interface. Details see http://mbed.org/users/charly/notebook/connecting-a-radio-window-shutter-contact-to-knx/
Dependencies: TextLCD mbed ConfigFile
eth_comfort.h@0:b79cb3278583, 2011-04-27 (annotated)
- Committer:
- charly
- Date:
- Wed Apr 27 19:02:00 2011 +0000
- Revision:
- 0:b79cb3278583
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| charly | 0:b79cb3278583 | 1 | #ifndef ETH_COMFORT_H |
| charly | 0:b79cb3278583 | 2 | #define ETH_COMFORT_H |
| charly | 0:b79cb3278583 | 3 | |
| charly | 0:b79cb3278583 | 4 | /*! |
| charly | 0:b79cb3278583 | 5 | * \file eth_comfort.h |
| charly | 0:b79cb3278583 | 6 | * \brief Read the messages from the ETH-Radio-Shutter |
| charly | 0:b79cb3278583 | 7 | * \author Karl Zweimüller |
| charly | 0:b79cb3278583 | 8 | */ |
| charly | 0:b79cb3278583 | 9 | |
| charly | 0:b79cb3278583 | 10 | |
| charly | 0:b79cb3278583 | 11 | #include "mbed.h" |
| charly | 0:b79cb3278583 | 12 | |
| charly | 0:b79cb3278583 | 13 | #include "rfm12b.h" |
| charly | 0:b79cb3278583 | 14 | |
| charly | 0:b79cb3278583 | 15 | // a message from the eth-Device |
| charly | 0:b79cb3278583 | 16 | struct eth_message { |
| charly | 0:b79cb3278583 | 17 | uint8_t cnt; //message-counter |
| charly | 0:b79cb3278583 | 18 | uint8_t len; //message-length |
| charly | 0:b79cb3278583 | 19 | uint32_t adr; // unique address of device |
| charly | 0:b79cb3278583 | 20 | uint8_t cmd; // the command |
| charly | 0:b79cb3278583 | 21 | uint8_t data; // optional data |
| charly | 0:b79cb3278583 | 22 | uint8_t xdata; // optional extra data |
| charly | 0:b79cb3278583 | 23 | uint16_t crc; // crc fro the message |
| charly | 0:b79cb3278583 | 24 | }; |
| charly | 0:b79cb3278583 | 25 | |
| charly | 0:b79cb3278583 | 26 | /** |
| charly | 0:b79cb3278583 | 27 | * Class for the ETH-Window shutter by ELV(R) |
| charly | 0:b79cb3278583 | 28 | * Uses the rfm12B to receive the signals sent by the radio-shutter |
| charly | 0:b79cb3278583 | 29 | * |
| charly | 0:b79cb3278583 | 30 | */ |
| charly | 0:b79cb3278583 | 31 | class eth_comfort { |
| charly | 0:b79cb3278583 | 32 | |
| charly | 0:b79cb3278583 | 33 | public: |
| charly | 0:b79cb3278583 | 34 | |
| charly | 0:b79cb3278583 | 35 | /** |
| charly | 0:b79cb3278583 | 36 | * Constructor. |
| charly | 0:b79cb3278583 | 37 | * |
| charly | 0:b79cb3278583 | 38 | * @param mosi SPI-Interface. One of the 2 PSI-Interfaces of mbed. Pin p5 or p11 |
| charly | 0:b79cb3278583 | 39 | * @param miso SPI-Interface. One of the 2 PSI-Interfaces of mbed. Pin p6 or p12 |
| charly | 0:b79cb3278583 | 40 | * @param sclk SPI-Interface. One of the 2 PSI-Interfaces of mbed. Pin p7 or p13 |
| charly | 0:b79cb3278583 | 41 | * @param nsel Chip-Select. A Digial Output of mbed |
| charly | 0:b79cb3278583 | 42 | * @param rxdata Data-Pin for received data. A DigitalIn of mbed |
| charly | 0:b79cb3278583 | 43 | * @param rxled LED1 - LED4 for showing received bytes |
| charly | 0:b79cb3278583 | 44 | */ |
| charly | 0:b79cb3278583 | 45 | eth_comfort(PinName mosi, PinName miso, PinName sclk, PinName nsel, PinName rxdata, PinName rxled); |
| charly | 0:b79cb3278583 | 46 | |
| charly | 0:b79cb3278583 | 47 | |
| charly | 0:b79cb3278583 | 48 | // initialize eth_comfort-receiver |
| charly | 0:b79cb3278583 | 49 | void init(); |
| charly | 0:b79cb3278583 | 50 | |
| charly | 0:b79cb3278583 | 51 | // is a new message readable - non blocking |
| charly | 0:b79cb3278583 | 52 | bool readable(); |
| charly | 0:b79cb3278583 | 53 | |
| charly | 0:b79cb3278583 | 54 | // read a eth-messsage - non blocking, shows the old message if no new is available |
| charly | 0:b79cb3278583 | 55 | eth_message getMessage(); |
| charly | 0:b79cb3278583 | 56 | |
| charly | 0:b79cb3278583 | 57 | |
| charly | 0:b79cb3278583 | 58 | |
| charly | 0:b79cb3278583 | 59 | private: |
| charly | 0:b79cb3278583 | 60 | |
| charly | 0:b79cb3278583 | 61 | // Interrupt Routine |
| charly | 0:b79cb3278583 | 62 | void ISR(); |
| charly | 0:b79cb3278583 | 63 | |
| charly | 0:b79cb3278583 | 64 | // the last received message |
| charly | 0:b79cb3278583 | 65 | eth_message last_message; |
| charly | 0:b79cb3278583 | 66 | |
| charly | 0:b79cb3278583 | 67 | // new meeesage |
| charly | 0:b79cb3278583 | 68 | eth_message new_message; |
| charly | 0:b79cb3278583 | 69 | |
| charly | 0:b79cb3278583 | 70 | // is a new message in the buffer? |
| charly | 0:b79cb3278583 | 71 | bool message_received; |
| charly | 0:b79cb3278583 | 72 | |
| charly | 0:b79cb3278583 | 73 | // calcualte the crc for eth |
| charly | 0:b79cb3278583 | 74 | uint16_t calcCRC16r( uint16_t c,uint16_t crc, uint16_t mask); |
| charly | 0:b79cb3278583 | 75 | |
| charly | 0:b79cb3278583 | 76 | volatile uint8_t bit_cnt; |
| charly | 0:b79cb3278583 | 77 | volatile uint16_t buffer_cnt; |
| charly | 0:b79cb3278583 | 78 | |
| charly | 0:b79cb3278583 | 79 | volatile uint8_t rbyte; |
| charly | 0:b79cb3278583 | 80 | |
| charly | 0:b79cb3278583 | 81 | volatile uint8_t buf[1024]; |
| charly | 0:b79cb3278583 | 82 | volatile uint8_t pack_ok,startbit; |
| charly | 0:b79cb3278583 | 83 | volatile uint8_t decode,bcnt,lastbit; |
| charly | 0:b79cb3278583 | 84 | volatile uint8_t state; |
| charly | 0:b79cb3278583 | 85 | volatile uint16_t b; |
| charly | 0:b79cb3278583 | 86 | volatile uint8_t blocklength; |
| charly | 0:b79cb3278583 | 87 | int i,j,k; |
| charly | 0:b79cb3278583 | 88 | bool crc_ok; |
| charly | 0:b79cb3278583 | 89 | uint16_t crc, swapped; |
| charly | 0:b79cb3278583 | 90 | |
| charly | 0:b79cb3278583 | 91 | rfm12b *rfm12b_spi; |
| charly | 0:b79cb3278583 | 92 | |
| charly | 0:b79cb3278583 | 93 | DigitalOut *rxLED; |
| charly | 0:b79cb3278583 | 94 | |
| charly | 0:b79cb3278583 | 95 | }; |
| charly | 0:b79cb3278583 | 96 | |
| charly | 0:b79cb3278583 | 97 | #endif |
| charly | 0:b79cb3278583 | 98 |