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/**** RFM 12 library for Atmel AVR Microcontrollers *******
*
* This software is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*
* @author Peter Fuhrmann, Hans-Gert Dahmen, Soeren Heisrath
*/
/******************************************************
* *
* C O N F I G U R A T I O N *
* *
******************************************************/
/*
Connect the RFM12 to the AVR as follows:
RFM12 | AVR
----------------+------------
SDO | MISO
nIRQ | INT0
FSK/DATA/nFFS | VCC
DCLK/CFIL/FFIT | -
CLK | -
nRES | -
GND | GND
ANT | -
VDD | VCC
GND | GND
nINT/VDI | -
SDI | MOSI
SCK | SCK
nSEL | Slave select pin defined below
*/
#include "../config.h"
#include "../makros.h"
//Pin that the RFM12's slave select is connected to
//#define DDR_SS DDRB
//#define PORT_SS PORTB
//#define BIT_SS PB4
#define DDR_SS DDR(PORT_SS)
//SPI port
//#define DDR_SPI DDRB
#define DDR_SPI DDR(PORT_SPI)
//#define PORT_SPI PORTB
//#define PIN_SPI PINB
//#define BIT_MOSI 5
//#define BIT_MISO 6
//#define BIT_SCK 7
//#define BIT_SPI_SS 4
//this is the hardware SS pin of the AVR - it
//needs to be set to output for the spi-interface to work
//correctly, independently of the CS pin used for the RFM12
/************************
* RFM12 CONFIGURATION OPTIONS
*/
//baseband of the module (either RFM12_BAND_433, RFM12_BAND_868 or RFM12_BAND_912)
#define RFM12_BASEBAND RFM12_BAND_433
//center frequency to use (+- FSK frequency shift)
#define RFM12_FREQUENCY 433000000UL
//FSK frequency shift in kHz
#define FSK_SHIFT 45000
//Receive RSSI Threshold
#define RFM12_RSSI_THRESHOLD RFM12_RXCTRL_RSSI_79
//Receive Filter Bandwidth
#define RFM12_FILTER_BW RFM12_RXCTRL_BW_134
//Output power relative to maximum (0dB is maximum)
#define RFM12_POWER RFM12_TXCONF_POWER_0
//Receive LNA gain
#define RFM12_LNA_GAIN RFM12_RXCTRL_LNA_6
//crystal load capacitance - the frequency can be verified by measuring the
//clock output of RFM12 and comparing to 1MHz.
//11.5pF seems to be o.k. for RFM12, and 10.5pF for RFM12BP, but this may vary.
#define RFM12_XTAL_LOAD RFM12_XTAL_11_5PF
//use this for datarates >= 2700 Baud
#define DATARATE_VALUE RFM12_DATARATE_CALC_HIGH(9600.0)
//use this for 340 Baud < datarate < 2700 Baud
//#define DATARATE_VALUE RFM12_DATARATE_CALC_LOW(1200.0)
//TX BUFFER SIZE
#define RFM12_TX_BUFFER_SIZE 10
//RX BUFFER SIZE (there are going to be 2 Buffers of this size for double_buffering)
#define RFM12_RX_BUFFER_SIZE 10
/************************
* INTERRUPT VECTOR
* set the name for the interrupt vector here
*/
//the interrupt vector
#define RFM12_INT_VECT (INT0_vect)
//the interrupt mask register
#define RFM12_INT_MSK GIMSK
//the interrupt bit in the mask register
#define RFM12_INT_BIT (INT0)
//the interrupt flag register
#define RFM12_INT_FLAG GIFR
//the interrupt bit in the flag register
#define RFM12_FLAG_BIT (INTF0)
//setup the interrupt to trigger on negative edge
#define RFM12_INT_SETUP() MCUCR |= (1 << ISC01)
/************************
* FEATURE CONFIGURATION
*/
#define RFM12_LOW_BATT_DETECTOR 0
#define RFM12_USE_WAKEUP_TIMER 0
#define RFM12_TRANSMIT_ONLY 0
#define RFM12_SPI_SOFTWARE 0
//setup the low battery detector to 2.2v
//Vlb = 2.2 + (val * 0.1)
//hint: minimum measured supply voltage is 1.98V !
#define RFM12_LBD_VOLTAGE RFM12_LBD_VOLTAGE_2V2
/**** UART DEBUGGING
* en- or disable debugging via uart.
*/
#define RFM12_UART_DEBUG 0