Programm for decoding radio-signals sent by a ETH-Window-Shutter-Contact, received with a RFM12B-module

Dependencies:   TextLCD mbed

rfm12b.h

Committer:
charly
Date:
2011-03-02
Revision:
0:96794c9fc5a3
Child:
1:fc72e0bdb693

File content as of revision 0:96794c9fc5a3:

#ifndef rfm12B_H
#define rfm12B_H

#include <mbed.h>

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);
    }


private:

  
    DigitalOut    *cs;          //chipselect
    InterruptIn   *m_pinRXData; //rx data pin
    SPI           *rfm12b_spi;  //spi-interface
  

};

#endif