Harry Eakins / RF12B

Library to send and receive data using RF12B transceiver modules Big thanks to the tutorial at https://loee.jottit.com/rfm12b_and_avr_-_quick_start and madcowswe

Dependents:   Measure_system Quadcopter_copy

RF12B.h@5:a92c3f6d1711, 2011-03-10 (annotated)

Committer:
harryeakins
Date:
Thu Mar 10 18:07:53 2011 +0000
Revision:
5:a92c3f6d1711
Parent:
4:2a295db9ba1a
Child:
6:98da0571ec31
Fixed some problems in initialization. Pretty much fully working now!

Who changed what in which revision?

UserRevisionLine numberNew contents of line
harryeakins 0:bd1232f200be 1 #ifndef _RF12B_H
harryeakins 0:bd1232f200be 2 #define _RF12B_H
harryeakins 0:bd1232f200be 3
harryeakins 0:bd1232f200be 4 #include "mbed.h"
harryeakins 4:2a295db9ba1a 5 #include <queue>
harryeakins 4:2a295db9ba1a 6
harryeakins 4:2a295db9ba1a 7 #define PACKET_LEN 16
harryeakins 4:2a295db9ba1a 8
harryeakins 4:2a295db9ba1a 9 enum rfmode_t{RX, TX};
harryeakins 0:bd1232f200be 10
harryeakins 0:bd1232f200be 11 class RF12B {
harryeakins 0:bd1232f200be 12 public:
harryeakins 4:2a295db9ba1a 13 /* Constructor */
harryeakins 0:bd1232f200be 14 RF12B(PinName SDI,
harryeakins 2:99cf337cd23e 15 PinName SDO,
harryeakins 2:99cf337cd23e 16 PinName SCK,
harryeakins 2:99cf337cd23e 17 PinName NCS,
harryeakins 2:99cf337cd23e 18 PinName NIRQ);
harryeakins 2:99cf337cd23e 19
harryeakins 4:2a295db9ba1a 20 /* Reads a byte of data from the receive buffer
harryeakins 4:2a295db9ba1a 21 Returns 0xFF if there is no data */
harryeakins 0:bd1232f200be 22 unsigned char read();
harryeakins 2:99cf337cd23e 23
harryeakins 4:2a295db9ba1a 24 /* Transmits a packet of data */
harryeakins 4:2a295db9ba1a 25 void write(unsigned char * data, unsigned char length);
harryeakins 4:2a295db9ba1a 26
harryeakins 4:2a295db9ba1a 27 /* Transmits a 1-byte packet of data */
harryeakins 4:2a295db9ba1a 28 void write(unsigned char data);
harryeakins 4:2a295db9ba1a 29
harryeakins 4:2a295db9ba1a 30 /* Returns true if data is available in the receive buffer*/
harryeakins 4:2a295db9ba1a 31 bool available();
harryeakins 0:bd1232f200be 32
harryeakins 0:bd1232f200be 33 private:
harryeakins 4:2a295db9ba1a 34 /* Receive FIFO buffer */
harryeakins 4:2a295db9ba1a 35 queue<unsigned char> fifo;
harryeakins 4:2a295db9ba1a 36
harryeakins 4:2a295db9ba1a 37 /* SPI module */
harryeakins 0:bd1232f200be 38 SPI spi;
harryeakins 4:2a295db9ba1a 39
harryeakins 4:2a295db9ba1a 40 /* Other digital pins */
harryeakins 0:bd1232f200be 41 DigitalOut NCS;
harryeakins 4:2a295db9ba1a 42 InterruptIn NIRQ;
harryeakins 4:2a295db9ba1a 43 DigitalIn NIRQ_in;
harryeakins 5:a92c3f6d1711 44 DigitalOut rfled;
harryeakins 3:e72ad65868ab 45
harryeakins 2:99cf337cd23e 46 /* Initialises the RF12B module */
harryeakins 3:e72ad65868ab 47 void init();
harryeakins 4:2a295db9ba1a 48
harryeakins 4:2a295db9ba1a 49 /* Write a command to the RF Module */
harryeakins 4:2a295db9ba1a 50 unsigned int writeCmd(unsigned int cmd);
harryeakins 4:2a295db9ba1a 51
harryeakins 4:2a295db9ba1a 52 /* Sends a byte of data across RF */
harryeakins 4:2a295db9ba1a 53 void send(unsigned char data);
harryeakins 4:2a295db9ba1a 54
harryeakins 3:e72ad65868ab 55 /* Switch module between receive and transmit modes */
harryeakins 4:2a295db9ba1a 56 void changeMode(rfmode_t mode);
harryeakins 4:2a295db9ba1a 57
harryeakins 4:2a295db9ba1a 58 /* Interrupt routine for data reception */
harryeakins 4:2a295db9ba1a 59 void rxISR();
harryeakins 4:2a295db9ba1a 60
harryeakins 4:2a295db9ba1a 61 /* Tell the RF Module this packet is received and wait for the next */
harryeakins 4:2a295db9ba1a 62 void resetRX();
harryeakins 5:a92c3f6d1711 63
harryeakins 5:a92c3f6d1711 64 /* Return the RF Module Status word */
harryeakins 5:a92c3f6d1711 65 unsigned int status();
harryeakins 0:bd1232f200be 66 };
harryeakins 0:bd1232f200be 67
harryeakins 0:bd1232f200be 68 #endif /* _RF12B_H */