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
Diff: rfm12b.h
- Revision:
- 0:b79cb3278583
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rfm12b.h Wed Apr 27 19:02:00 2011 +0000 @@ -0,0 +1,79 @@ +#ifndef rfm12B_H +#define rfm12B_H + +#include <mbed.h> + +/*! + * \file rfm12b.h + * \brief class for rfm2b in rawmode - only receive part implemented + * \author Karl Zweimüller based on code from WED 6.9.2009 + */ + +typedef unsigned char Byte; // used to be uint8_t : something a byte wide, whatever .... + +/** This Class handles a rfm12b transceiver + * see http://www.hoperf.com/rf_fsk/rfm12b.htm + * +*/ +class rfm12b { +public: + /** Create a rfm12b object + * + * @param mosi SPI-Interface. One of the 2 PSI-Interfaces of mbed. Pin p5 or p11 + * @param miso SPI-Interface. One of the 2 PSI-Interfaces of mbed. Pin p6 or p12 + * @param sclk SPI-Interface. One of the 2 PSI-Interfaces of mbed. Pin p7 or p13 + * @param nsel Chip-Select. A Digial Output of mbed + * @param rxdata Data-Pin for received data. A DigitalIn of mbed + */ + rfm12b(PinName mosi, PinName miso, PinName sclk, PinName nsel, PinName rxdata); + + /** init the spi-interface + */ + void init_spi(); + + /** initialize the device + */ + void RFM_init(void); + + /** write and read 16 bit + */ + uint16_t rfm_spi16(uint16_t outval); + + /** attach a function to be called when the data-pin changes from 0->1 and from 1->0 + * this function has to do all the decoding + * keep this function short, as no interrrupts can occour within + * + * @param fptr Pointer to callback-function + */ + void attachISR(void (*fptr)(void)) { + m_pinRXData->fall(fptr); + m_pinRXData->rise(fptr); + } + + template<typename T> + /** attach an object member function to be called when the data-pin changes from 0->1 and from 1->0 + * + * @param tptr pointer to object + * @param mprt pointer ro member function + * + */ + void attachISR(T* tptr, void (T::*mptr)(void)) { + if ((mptr != NULL) && (tptr != NULL)) { + m_pinRXData->fall(tptr, mptr); + m_pinRXData->rise(tptr, mptr); + } + } + + + +private: + + + DigitalOut *cs; //chipselect + InterruptIn *m_pinRXData; //rx data pin + SPI *rfm12b_spi; //spi-interface + + +}; + +#endif