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Transmitter code for quadcopter
Revision 0:1b2cbe8cabf1, committed 2011-11-22
- Comitter:
- madcowswe
- Date:
- Tue Nov 22 23:20:34 2011 +0000
- Commit message:
Changed in this revision
diff -r 000000000000 -r 1b2cbe8cabf1 RF12B/RF12B.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/RF12B/RF12B.cpp Tue Nov 22 23:20:34 2011 +0000 @@ -0,0 +1,376 @@ +#include "RF12B.h" + +#include "RF_defs.h" +#include <algorithm> + +RF12B::RF12B(PinName _SDI, + PinName _SDO, + PinName _SCK, + PinName _NCS, + PinName _NIRQ):spi(_SDI, _SDO, _SCK), + NCS(_NCS), NIRQ(_NIRQ), NIRQ_in(_NIRQ), rfled(LED3) { + + /* SPI frequency, word lenght, polarity and phase */ + spi.format(16,0); + spi.frequency(2000000); + + /* Set ~CS high */ + NCS = 1; + + /* Initialise RF Module */ + init(); + + /* Setup interrupt to happen on falling edge of NIRQ */ + NIRQ.fall(this, &RF12B::rxISR); +} + +/* Returns the packet length if data is available in the receive buffer, 0 otherwise*/ +unsigned int RF12B::available() { + return fifo.size(); +} + +/* Reads a packet of data, with length "size" Returns false if read failed. TODO: make a metafifo to isolate packets*/ +bool RF12B::read(unsigned char* data, unsigned int size) { + if (fifo.size() == 0) { + return false; + } else { + unsigned int i = 0; + while (fifo.size() > 0 && i < size) { + data[i++] = fifo.front(); + fifo.pop(); + } + return true; + } +} + +/* Reads a byte of data from the receive buffer */ +unsigned char RF12B::read() { + if (available()) { + unsigned char data = fifo.front(); + fifo.pop(); + return data; + } else { + return 0xFF; // Error val although could also be data... + } +} + +/* Sends a packet of data to the RF module for transmission TODO: Make asych*/ +void RF12B::write(unsigned char *data, unsigned char length) { + unsigned char crc = 0; + + /* Transmitter mode */ + changeMode(TX); + + writeCmd(0x0000); + send(0xAA); // PREAMBLE + send(0xAA); + send(0xAA); + send(0x2D); // SYNC + send(0xD4); + /* Packet Length */ + send(length); + crc = crc8(crc, length); + send(crc); + crc = crc8(crc, crc); + /* Packet Data */ + for (unsigned char i=0; i<length; i++) { + send(data[i]); + crc = crc8(crc, data[i]); + } + send(crc); + send(0xAA); // DUMMY BYTES + send(0xAA); + send(0xAA); + + /* Back to receiver mode */ + changeMode(RX); + status(); +} + +/* Transmit a 1-byte data packet */ +void RF12B::write(unsigned char data) { + write(&data, 1); +} + +void RF12B::write(queue<char> &data, int length) { + char crc = 0; + char length_byte = 0; + + /* -1 means try to transmit everything in the queue */ + if(length == -1) { + length = data.size(); + } + + /* max length of packet is 255 */ + length_byte = min(length, 255); + + /* Transmitter mode */ + changeMode(TX); + + writeCmd(0x0000); + send(0xAA); // PREAMBLE + send(0xAA); + send(0xAA); + send(0x2D); // SYNC + send(0xD4); + /* Packet Length */ + send(length_byte); + crc = crc8(crc, length_byte); + send(crc); + crc = crc8(crc, crc); + /* Packet Data */ + for (char i=0; i<length_byte; i++) { + send(data.front()); + crc = crc8(crc, data.front()); + data.pop(); + } + send(crc); + send(0xAA); // DUMMY BYTES + send(0xAA); + send(0xAA); + + /* Back to receiver mode */ + changeMode(RX); + status(); +} + +/********************************************************************** + * PRIVATE FUNCTIONS + *********************************************************************/ + +/* Initialises the RF12B module */ +void RF12B::init() { + /* writeCmd(0x80E7); //EL,EF,868band,12.0pF + changeMode(RX); + writeCmd(0xA640); //frequency select + writeCmd(0xC647); //4.8kbps + writeCmd(0x94A0); //VDI,FAST,134kHz,0dBm,-103dBm + writeCmd(0xC2AC); //AL,!ml,DIG,DQD4 + writeCmd(0xCA81); //FIFO8,SYNC,!ff,DR + writeCmd(0xCED4); //SYNC=2DD4 + writeCmd(0xC483); //@PWR,NO RSTRIC,!st,!fi,OE,EN + writeCmd(0x9850); //!mp,90kHz,MAX OUT + writeCmd(0xCC17); //OB1, COB0, LPX, Iddy, CDDIT�CBW0 + writeCmd(0xE000); //NOT USED + writeCmd(0xC800); //NOT USED + writeCmd(0xC040); //1.66MHz,2.2V */ + + writeCmd( + RFM_CONFIG_EL | + RFM_CONFIG_EF | + RFM_CONFIG_BAND_433 //| + //RFM_CONFIG_X_11_0pf // meh, using default + ); + + // 2. Power Management Command + // leave everything switched off for now + /* + writeCmd( + RFM_POWER_MANAGEMENT // switch all off + ); + */ + + // 3. Frequency Setting Command + writeCmd( + RFM_FREQUENCY | + RFM_FREQ_433Band(435.7) //I totally made this value up... if someone knows where the sweetspots are in this band, tell me! + ); + + + // 4. Data Rate Command + writeCmd(RFM_DATA_RATE_9600); + + + // 5. Receiver Control Command + writeCmd( + RFM_RX_CONTROL_P20_VDI | + RFM_RX_CONTROL_VDI_FAST | + //RFM_RX_CONTROL_BW(RFM_BAUD_RATE) | + RFM_RX_CONTROL_BW_134 | // CHANGE THIS TO 67 TO IMPROVE RANGE! (though the bitrate must then be below 8kbaud, and fsk modulation changed) + RFM_RX_CONTROL_GAIN_0 | + RFM_RX_CONTROL_RSSI_103 // Might need adjustment. Datasheet says around 10^-5 bit error rate at this level and baudrate. + ); + + // 6. Data Filter Command + writeCmd( + RFM_DATA_FILTER_AL | + RFM_DATA_FILTER_ML | + RFM_DATA_FILTER_DIG //| + //RFM_DATA_FILTER_DQD(4) + ); + + // 7. FIFO and Reset Mode Command + writeCmd( + RFM_FIFO_IT(8) | + RFM_FIFO_DR | + 0x8 //turn on 16bit sync word + ); + + // 8. FIFO Syncword + // Leave as default: 0xD4 + + // 9. Receiver FIFO Read + // when the interupt goes high, (and if we can assume that it was a fifo fill interrupt) we can read a byte using: + // result = RFM_READ_FIFO(); + + // 10. AFC Command + writeCmd( + //RFM_AFC_AUTO_VDI | //Note this might be changed to improve range. Refer to datasheet. + RFM_AFC_AUTO_INDEPENDENT | + RFM_AFC_RANGE_LIMIT_7_8 | + RFM_AFC_EN | + RFM_AFC_OE | + RFM_AFC_FI + ); + + // 11. TX Configuration Control Command + writeCmd( + RFM_TX_CONTROL_MOD_60 | + RFM_TX_CONTROL_POW_0 + ); + + + // 12. PLL Setting Command + writeCmd( + 0xCC77 & ~0x01 // Setting the PLL bandwith, less noise, but max bitrate capped at 86.2 + // I think this will slow down the pll's reaction time. Not sure, check with someone! + ); + + resetRX(); + status(); +} + +/* Write a command to the RF Module */ +unsigned int RF12B::writeCmd(unsigned int cmd) { + NCS = 0; + unsigned int recv = spi.write(cmd); + NCS = 1; + return recv; +} + +/* Sends a byte of data across RF */ +void RF12B::send(unsigned char data) { + while (NIRQ); + writeCmd(0xB800 + data); +} + +/* Change the mode of the RF module to Transmitting or Receiving */ +void RF12B::changeMode(rfmode_t _mode) { + mode = _mode; + if (_mode == TX) { + writeCmd(0x8239); //!er,!ebb,ET,ES,EX,!eb,!ew,DC + } else { /* mode == RX */ + writeCmd(0x8299); //er,!ebb,ET,ES,EX,!eb,!ew,DC + } +} + +/* Interrupt routine for data reception */ +void RF12B::rxISR() { + unsigned int data = 0; + static int i = -2; + static unsigned char packet_length = 0; + static unsigned char crc = 0; + static queue<unsigned char> temp; + + //Loop while interrupt is asserted + while (!NIRQ_in && mode == RX) { + + /* Grab the packet's length byte */ + if (i == -2) { + data = writeCmd(0x0000); + if ( (data&0x8000) ) { + data = writeCmd(0xB000); + packet_length = (data&0x00FF); + crc = crc8(crc, packet_length); + i++; + } + } + + //If we exhaust the interrupt, exit + if (NIRQ_in) + break; + + // Check that packet length was correct + if (i == -1) { + data = writeCmd(0x0000); + if ( (data&0x8000) ) { + data = writeCmd(0xB000); + unsigned char crcofsize = (data&0x00FF); + if (crcofsize != crc) { + //It was wrong, start over + i = -2; + packet_length = 0; + crc = 0; + temp = queue<unsigned char>(); + resetRX(); + } else { + crc = crc8(crc, crcofsize); + i++; + } + } + } + + //If we exhaust the interrupt, exit + if (NIRQ_in) + break; + + /* Grab the packet's data */ + if (i >= 0 && i < packet_length) { + data = writeCmd(0x0000); + if ( (data&0x8000) ) { + data = writeCmd(0xB000); + temp.push(data&0x00FF); + crc = crc8(crc, (unsigned char)(data&0x00FF)); + i++; + } + } + + //If we exhaust the interrupt, exit + if (NIRQ_in) + break; + + if (i >= packet_length) { + data = writeCmd(0x0000); + if ( (data&0x8000) ) { + data = writeCmd(0xB000); + if ((unsigned char)(data & 0x00FF) == crc) { + //If the checksum is correct, add our data to the end of the output buffer + while (!temp.empty()) { + fifo.push(temp.front()); + temp.pop(); + } + } + + /* Tell RF Module we are finished, and clean up */ + i = -2; + packet_length = 0; + crc = 0; + temp = queue<unsigned char>(); + resetRX(); + } + } + } +} + +unsigned int RF12B::status() { + return writeCmd(0x0000); +} + +/* Tell the RF Module this packet is received and wait for the next */ +void RF12B::resetRX() { + writeCmd(0xCA81); + writeCmd(0xCA83); +}; + +/* Calculate CRC8 */ +unsigned char RF12B::crc8(unsigned char crc, unsigned char data) { + crc = crc ^ data; + for (int i = 0; i < 8; i++) { + if (crc & 0x01) { + crc = (crc >> 1) ^ 0x8C; + } else { + crc >>= 1; + } + } + return crc; +} \ No newline at end of file
diff -r 000000000000 -r 1b2cbe8cabf1 RF12B/RF12B.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/RF12B/RF12B.h Tue Nov 22 23:20:34 2011 +0000 @@ -0,0 +1,75 @@ +#ifndef _RF12B_H +#define _RF12B_H + +#include "mbed.h" +#include <queue> + +enum rfmode_t{RX, TX}; + +class RF12B { +public: + /* Constructor */ + RF12B(PinName SDI, + PinName SDO, + PinName SCK, + PinName NCS, + PinName NIRQ); + + + + /* Reads a packet of data. Returns false if read failed. Use available() to check how much space to allocate for buffer */ + bool read(unsigned char* data, unsigned int size); + + /* Reads a byte of data from the receive buffer + Returns 0xFF if there is no data */ + unsigned char read(); + + /* Transmits a packet of data */ + void write(unsigned char* data, unsigned char length); + void write(unsigned char data); /* 1-byte packet */ + void write(queue<char> &data, int length = -1); /* sends a whole queue */ + + /* Returns the packet length if data is available in the receive buffer, 0 otherwise*/ + unsigned int available(); + +protected: + /* Receive FIFO buffer */ + queue<unsigned char> fifo; + + /* SPI module */ + SPI spi; + + /* Other digital pins */ + DigitalOut NCS; + InterruptIn NIRQ; + DigitalIn NIRQ_in; + DigitalOut rfled; + + rfmode_t mode; + + /* Initialises the RF12B module */ + void init(); + + /* Write a command to the RF Module */ + unsigned int writeCmd(unsigned int cmd); + + /* Sends a byte of data across RF */ + void send(unsigned char data); + + /* Switch module between receive and transmit modes */ + void changeMode(rfmode_t mode); + + /* Interrupt routine for data reception */ + void rxISR(); + + /* Tell the RF Module this packet is received and wait for the next */ + void resetRX(); + + /* Return the RF Module Status word */ + unsigned int status(); + + /* Calculate CRC8 */ + unsigned char crc8(unsigned char crc, unsigned char data); +}; + +#endif /* _RF12B_H */ \ No newline at end of file
diff -r 000000000000 -r 1b2cbe8cabf1 RF12B/RFSerial.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/RF12B/RFSerial.cpp Tue Nov 22 23:20:34 2011 +0000 @@ -0,0 +1,25 @@ + +/* Constructor */ +#include "RFSerial.h" + +RFSerial::RFSerial(PinName _SDI, + PinName _SDO, + PinName _SCK, + PinName _NCS, + PinName _NIRQ) +:RF12B(_SDI, _SDO, _SCK, _NCS, _NIRQ) { + +} + +// Stream implementation functions +int RFSerial::_putc(int value) { + RF12B::write((unsigned char) value); + return value; +} +int RFSerial::_getc() { + if(available()) { + return RF12B::read(); + } else { + return EOF; + } +} \ No newline at end of file
diff -r 000000000000 -r 1b2cbe8cabf1 RF12B/RFSerial.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/RF12B/RFSerial.h Tue Nov 22 23:20:34 2011 +0000 @@ -0,0 +1,17 @@ +#include "mbed.h" +#include "RF12B.h" + +class RFSerial : public Stream, public RF12B { +public: + /* Constructor */ + RFSerial(PinName _SDI, + PinName _SDO, + PinName _SCK, + PinName _NCS, + PinName _NIRQ); + +protected: + // Stream implementation functions + virtual int _putc(int value); + virtual int _getc(); +}; \ No newline at end of file
diff -r 000000000000 -r 1b2cbe8cabf1 RF12B/RF_defs.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/RF12B/RF_defs.h Tue Nov 22 23:20:34 2011 +0000 @@ -0,0 +1,478 @@ +/* + * Open HR20 + * + * target: ATmega169 @ 4 MHz in Honnywell Rondostat HR20E + * + * compiler: WinAVR-20071221 + * avr-libc 1.6.0 + * GCC 4.2.2 + * + * copyright: 2008 Dario Carluccio (hr20-at-carluccio-dot-de) + * 2008 Jiri Dobry (jdobry-at-centrum-dot-cz) + * 2008 Mario Fischer (MarioFischer-at-gmx-dot-net) + * 2007 Michael Smola (Michael-dot-Smola-at-gmx-dot-net) + * + * license: This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This program 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 program. If not, see http:*www.gnu.org/licenses + */ + +/* + * \file rfm.h + * \brief functions to control the RFM12 Radio Transceiver Module + * \author Mario Fischer <MarioFischer-at-gmx-dot-net>; Michael Smola <Michael-dot-Smola-at-gmx-dot-net> + * \date $Date: 2010/04/17 17:57:02 $ + * $Rev: 260 $ + */ + + +//#pragma once // multi-iclude prevention. gcc knows this pragma +#ifndef rfm_H +#define rfm_H + + +#define RFM_SPI_16(OUTVAL) rfm_spi16(OUTVAL) //<! a function that gets a uint16_t (clocked out value) and returns a uint16_t (clocked in value) + +#define RFM_CLK_OUTPUT 0 + +/* +#define RFM_TESTPIN_INIT +#define RFM_TESTPIN_ON +#define RFM_TESTPIN_OFF +#define RFM_TESTPIN_TOG + +#define RFM_CONFIG_DISABLE 0x00 //<! RFM_CONFIG_*** are combinable flags, what the RFM shold do +#define RFM_CONFIG_BROADCASTSTATUS 0x01 //<! Flag that enables the HR20's status broadcast every minute + +#define RFM_CONFIG_ENABLEALL 0xff +*/ + + +/////////////////////////////////////////////////////////////////////////////// +// +// RFM status bits +// +/////////////////////////////////////////////////////////////////////////////// + +// Interrupt bits, latched //////////////////////////////////////////////////// + +#define RFM_STATUS_FFIT 0x8000 // RX FIFO reached the progr. number of bits + // Cleared by any FIFO read method + +#define RFM_STATUS_RGIT 0x8000 // TX register is ready to receive + // Cleared by TX write + +#define RFM_STATUS_POR 0x4000 // Power On reset + // Cleared by read status + +#define RFM_STATUS_RGUR 0x2000 // TX register underrun, register over write + // Cleared by read status + +#define RFM_STATUS_FFOV 0x2000 // RX FIFO overflow + // Cleared by read status + +#define RFM_STATUS_WKUP 0x1000 // Wake up timer overflow + // Cleared by read status + +#define RFM_STATUS_EXT 0x0800 // Interupt changed to low + // Cleared by read status + +#define RFM_STATUS_LBD 0x0400 // Low battery detect + +// Status bits //////////////////////////////////////////////////////////////// + +#define RFM_STATUS_FFEM 0x0200 // FIFO is empty +#define RFM_STATUS_ATS 0x0100 // TX mode: Strong enough RF signal +#define RFM_STATUS_RSSI 0x0100 // RX mode: signal strength above programmed limit +#define RFM_STATUS_DQD 0x0080 // Data Quality detector output +#define RFM_STATUS_CRL 0x0040 // Clock recovery lock +#define RFM_STATUS_ATGL 0x0020 // Toggling in each AFC cycle + +/////////////////////////////////////////////////////////////////////////////// +// +// 1. Configuration Setting Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_CONFIG 0x8000 + +#define RFM_CONFIG_EL 0x8080 // Enable TX Register +#define RFM_CONFIG_EF 0x8040 // Enable RX FIFO buffer +#define RFM_CONFIG_BAND_315 0x8000 // Frequency band +#define RFM_CONFIG_BAND_433 0x8010 +#define RFM_CONFIG_BAND_868 0x8020 +#define RFM_CONFIG_BAND_915 0x8030 +#define RFM_CONFIG_X_8_5pf 0x8000 // Crystal Load Capacitor +#define RFM_CONFIG_X_9_0pf 0x8001 +#define RFM_CONFIG_X_9_5pf 0x8002 +#define RFM_CONFIG_X_10_0pf 0x8003 +#define RFM_CONFIG_X_10_5pf 0x8004 +#define RFM_CONFIG_X_11_0pf 0x8005 +#define RFM_CONFIG_X_11_5pf 0x8006 +#define RFM_CONFIG_X_12_0pf 0x8007 +#define RFM_CONFIG_X_12_5pf 0x8008 +#define RFM_CONFIG_X_13_0pf 0x8009 +#define RFM_CONFIG_X_13_5pf 0x800A +#define RFM_CONFIG_X_14_0pf 0x800B +#define RFM_CONFIG_X_14_5pf 0x800C +#define RFM_CONFIG_X_15_0pf 0x800D +#define RFM_CONFIG_X_15_5pf 0x800E +#define RFM_CONFIG_X_16_0pf 0x800F + +/////////////////////////////////////////////////////////////////////////////// +// +// 2. Power Management Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_POWER_MANAGEMENT 0x8200 + +#define RFM_POWER_MANAGEMENT_ER 0x8280 // Enable receiver +#define RFM_POWER_MANAGEMENT_EBB 0x8240 // Enable base band block +#define RFM_POWER_MANAGEMENT_ET 0x8220 // Enable transmitter +#define RFM_POWER_MANAGEMENT_ES 0x8210 // Enable synthesizer +#define RFM_POWER_MANAGEMENT_EX 0x8208 // Enable crystal oscillator +#define RFM_POWER_MANAGEMENT_EB 0x8204 // Enable low battery detector +#define RFM_POWER_MANAGEMENT_EW 0x8202 // Enable wake-up timer +#define RFM_POWER_MANAGEMENT_DC 0x8201 // Disable clock output of CLK pin + +#ifndef RFM_CLK_OUTPUT + #error RFM_CLK_OUTPUT must be defined to 0 or 1 +#endif +#if RFM_CLK_OUTPUT + #define RFM_TX_ON_PRE() RFM_SPI_16( \ + RFM_POWER_MANAGEMENT_ES | \ + RFM_POWER_MANAGEMENT_EX ) + #define RFM_TX_ON() RFM_SPI_16( \ + RFM_POWER_MANAGEMENT_ET | \ + RFM_POWER_MANAGEMENT_ES | \ + RFM_POWER_MANAGEMENT_EX ) + #define RFM_RX_ON() RFM_SPI_16( \ + RFM_POWER_MANAGEMENT_ER | \ + RFM_POWER_MANAGEMENT_EBB | \ + RFM_POWER_MANAGEMENT_ES | \ + RFM_POWER_MANAGEMENT_EX ) + #define RFM_OFF() RFM_SPI_16( \ + RFM_POWER_MANAGEMENT_EX ) +#else + #define RFM_TX_ON_PRE() RFM_SPI_16( \ + RFM_POWER_MANAGEMENT_DC | \ + RFM_POWER_MANAGEMENT_ES | \ + RFM_POWER_MANAGEMENT_EX ) + #define RFM_TX_ON() RFM_SPI_16( \ + RFM_POWER_MANAGEMENT_DC | \ + RFM_POWER_MANAGEMENT_ET | \ + RFM_POWER_MANAGEMENT_ES | \ + RFM_POWER_MANAGEMENT_EX ) + #define RFM_RX_ON() RFM_SPI_16( \ + RFM_POWER_MANAGEMENT_DC | \ + RFM_POWER_MANAGEMENT_ER | \ + RFM_POWER_MANAGEMENT_EBB | \ + RFM_POWER_MANAGEMENT_ES | \ + RFM_POWER_MANAGEMENT_EX ) + #define RFM_OFF() RFM_SPI_16(RFM_POWER_MANAGEMENT_DC) +#endif +/////////////////////////////////////////////////////////////////////////////// +// +// 3. Frequency Setting Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_FREQUENCY 0xA000 + +#define RFM_FREQ_315Band(v) (uint16_t)((v/10.0-31)*4000) +#define RFM_FREQ_433Band(v) (uint16_t)((v/10.0-43)*4000) +#define RFM_FREQ_868Band(v) (uint16_t)((v/20.0-43)*4000) +#define RFM_FREQ_915Band(v) (uint16_t)((v/30.0-30)*4000) + +/////////////////////////////////////////////////////////////////////////////// +// +// 4. Data Rate Command +// +///////////////////////////////////////////////////////////////////////////////// + +#define RFM_BAUD_RATE 9600 + +#define RFM_DATA_RATE 0xC600 + +#define RFM_DATA_RATE_CS 0xC680 +#define RFM_DATA_RATE_4800 0xC647 +#define RFM_DATA_RATE_9600 0xC623 +#define RFM_DATA_RATE_19200 0xC611 +#define RFM_DATA_RATE_38400 0xC608 +#define RFM_DATA_RATE_57600 0xC605 + +#define RFM_SET_DATARATE(baud) ( ((baud)<5400) ? (RFM_DATA_RATE_CS|((43104/(baud))-1)) : (RFM_DATA_RATE|((344828UL/(baud))-1)) ) + +/////////////////////////////////////////////////////////////////////////////// +// +// 5. Receiver Control Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_RX_CONTROL 0x9000 + +#define RFM_RX_CONTROL_P20_INT 0x9000 // Pin20 = ExternalInt +#define RFM_RX_CONTROL_P20_VDI 0x9400 // Pin20 = VDI out + +#define RFM_RX_CONTROL_VDI_FAST 0x9000 // fast VDI Response time +#define RFM_RX_CONTROL_VDI_MED 0x9100 // medium +#define RFM_RX_CONTROL_VDI_SLOW 0x9200 // slow +#define RFM_RX_CONTROL_VDI_ON 0x9300 // Always on + +#define RFM_RX_CONTROL_BW_400 0x9020 // bandwidth 400kHz +#define RFM_RX_CONTROL_BW_340 0x9040 // bandwidth 340kHz +#define RFM_RX_CONTROL_BW_270 0x9060 // bandwidth 270kHz +#define RFM_RX_CONTROL_BW_200 0x9080 // bandwidth 200kHz +#define RFM_RX_CONTROL_BW_134 0x90A0 // bandwidth 134kHz +#define RFM_RX_CONTROL_BW_67 0x90C0 // bandwidth 67kHz + +#define RFM_RX_CONTROL_GAIN_0 0x9000 // LNA gain 0db +#define RFM_RX_CONTROL_GAIN_6 0x9008 // LNA gain -6db +#define RFM_RX_CONTROL_GAIN_14 0x9010 // LNA gain -14db +#define RFM_RX_CONTROL_GAIN_20 0x9018 // LNA gain -20db + +#define RFM_RX_CONTROL_RSSI_103 0x9000 // DRSSI threshold -103dbm +#define RFM_RX_CONTROL_RSSI_97 0x9001 // DRSSI threshold -97dbm +#define RFM_RX_CONTROL_RSSI_91 0x9002 // DRSSI threshold -91dbm +#define RFM_RX_CONTROL_RSSI_85 0x9003 // DRSSI threshold -85dbm +#define RFM_RX_CONTROL_RSSI_79 0x9004 // DRSSI threshold -79dbm +#define RFM_RX_CONTROL_RSSI_73 0x9005 // DRSSI threshold -73dbm +//#define RFM_RX_CONTROL_RSSI_67 0x9006 // DRSSI threshold -67dbm // RF12B reserved +//#define RFM_RX_CONTROL_RSSI_61 0x9007 // DRSSI threshold -61dbm // RF12B reserved + +#define RFM_RX_CONTROL_BW(baud) (((baud)<8000) ? \ + RFM_RX_CONTROL_BW_67 : \ + ( \ + ((baud)<30000) ? \ + RFM_RX_CONTROL_BW_134 : \ + RFM_RX_CONTROL_BW_200 \ + )) + +/////////////////////////////////////////////////////////////////////////////// +// +// 6. Data Filter Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_DATA_FILTER 0xC228 + +#define RFM_DATA_FILTER_AL 0xC2A8 // clock recovery auto-lock +#define RFM_DATA_FILTER_ML 0xC268 // clock recovery fast mode +#define RFM_DATA_FILTER_DIG 0xC228 // data filter type digital +#define RFM_DATA_FILTER_ANALOG 0xC238 // data filter type analog +#define RFM_DATA_FILTER_DQD(level) (RFM_DATA_FILTER | (level & 0x7)) + +/////////////////////////////////////////////////////////////////////////////// +// +// 7. FIFO and Reset Mode Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_FIFO 0xCA00 + +#define RFM_FIFO_AL 0xCA04 // FIFO Start condition sync-word/always +#define RFM_FIFO_FF 0xCA02 // Enable FIFO fill +#define RFM_FIFO_DR 0xCA01 // Disable hi sens reset mode +#define RFM_FIFO_IT(level) (RFM_FIFO | (( (level) & 0xF)<<4)) + +#define RFM_FIFO_OFF() RFM_SPI_16(RFM_FIFO_IT(8) | RFM_FIFO_DR) +#define RFM_FIFO_ON() RFM_SPI_16(RFM_FIFO_IT(8) | RFM_FIFO_FF | RFM_FIFO_DR) + +///////////////////////////////////////////////////////////////////////////// +// +// 8. Receiver FIFO Read +// +///////////////////////////////////////////////////////////////////////////// + +#define RFM_READ_FIFO() (RFM_SPI_16(0xB000) & 0xFF) + +///////////////////////////////////////////////////////////////////////////// +// +// 9. AFC Command +// +///////////////////////////////////////////////////////////////////////////// + +#define RFM_AFC 0xC400 + +#define RFM_AFC_EN 0xC401 +#define RFM_AFC_OE 0xC402 +#define RFM_AFC_FI 0xC404 +#define RFM_AFC_ST 0xC408 + +// Limits the value of the frequency offset register to the next values: + +#define RFM_AFC_RANGE_LIMIT_NO 0xC400 // 0: No restriction +#define RFM_AFC_RANGE_LIMIT_15_16 0xC410 // 1: +15 fres to -16 fres +#define RFM_AFC_RANGE_LIMIT_7_8 0xC420 // 2: +7 fres to -8 fres +#define RFM_AFC_RANGE_LIMIT_3_4 0xC430 // 3: +3 fres to -4 fres + +// fres=2.5 kHz in 315MHz and 433MHz Bands +// fres=5.0 kHz in 868MHz Band +// fres=7.5 kHz in 915MHz Band + +#define RFM_AFC_AUTO_OFF 0xC400 // 0: Auto mode off (Strobe is controlled by microcontroller) +#define RFM_AFC_AUTO_ONCE 0xC440 // 1: Runs only once after each power-up +#define RFM_AFC_AUTO_VDI 0xC480 // 2: Keep the foffset only during receiving(VDI=high) +#define RFM_AFC_AUTO_INDEPENDENT 0xC4C0 // 3: Keep the foffset value independently trom the state of the VDI signal + +/////////////////////////////////////////////////////////////////////////////// +// +// 10. TX Configuration Control Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_TX_CONTROL 0x9800 + +#define RFM_TX_CONTROL_POW_0 0x9800 +#define RFM_TX_CONTROL_POW_3 0x9801 +#define RFM_TX_CONTROL_POW_6 0x9802 +#define RFM_TX_CONTROL_POW_9 0x9803 +#define RFM_TX_CONTROL_POW_12 0x9804 +#define RFM_TX_CONTROL_POW_15 0x9805 +#define RFM_TX_CONTROL_POW_18 0x9806 +#define RFM_TX_CONTROL_POW_21 0x9807 +#define RFM_TX_CONTROL_MOD_15 0x9800 +#define RFM_TX_CONTROL_MOD_30 0x9810 +#define RFM_TX_CONTROL_MOD_45 0x9820 +#define RFM_TX_CONTROL_MOD_60 0x9830 +#define RFM_TX_CONTROL_MOD_75 0x9840 +#define RFM_TX_CONTROL_MOD_90 0x9850 +#define RFM_TX_CONTROL_MOD_105 0x9860 +#define RFM_TX_CONTROL_MOD_120 0x9870 +#define RFM_TX_CONTROL_MOD_135 0x9880 +#define RFM_TX_CONTROL_MOD_150 0x9890 +#define RFM_TX_CONTROL_MOD_165 0x98A0 +#define RFM_TX_CONTROL_MOD_180 0x98B0 +#define RFM_TX_CONTROL_MOD_195 0x98C0 +#define RFM_TX_CONTROL_MOD_210 0x98D0 +#define RFM_TX_CONTROL_MOD_225 0x98E0 +#define RFM_TX_CONTROL_MOD_240 0x98F0 +#define RFM_TX_CONTROL_MP 0x9900 + +#define RFM_TX_CONTROL_MOD(baud) (((baud)<8000) ? \ + RFM_TX_CONTROL_MOD_45 : \ + ( \ + ((baud)<20000) ? \ + RFM_TX_CONTROL_MOD_60 : \ + ( \ + ((baud)<30000) ? \ + RFM_TX_CONTROL_MOD_75 : \ + ( \ + ((baud)<40000) ? \ + RFM_TX_CONTROL_MOD_90 : \ + RFM_TX_CONTROL_MOD_120 \ + ) \ + ) \ + )) + +///////////////////////////////////////////////////////////////////////////// +// +// 11. Transmitter Register Write Command +// +///////////////////////////////////////////////////////////////////////////// + +//#define RFM_WRITE(byte) RFM_SPI_16(0xB800 | ((byte) & 0xFF)) +#define RFM_WRITE(byte) RFM_SPI_16(0xB800 | (byte) ) + +/////////////////////////////////////////////////////////////////////////////// +// +// 12. Wake-up Timer Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_WAKEUP_TIMER 0xE000 +#define RFM_WAKEUP_SET(time) RFM_SPI_16(RFM_WAKEUP_TIMER | (time)) + +#define RFM_WAKEUP_480s (RFM_WAKEUP_TIMER |(11 << 8)| 234) +#define RFM_WAKEUP_240s (RFM_WAKEUP_TIMER |(10 << 8)| 234) +#define RFM_WAKEUP_120s (RFM_WAKEUP_TIMER |(9 << 8)| 234) +#define RFM_WAKEUP_119s (RFM_WAKEUP_TIMER |(9 << 8)| 232) + +#define RFM_WAKEUP_60s (RFM_WAKEUP_TIMER |(8 << 8) | 235) +#define RFM_WAKEUP_59s (RFM_WAKEUP_TIMER |(8 << 8) | 230) + +#define RFM_WAKEUP_30s (RFM_WAKEUP_TIMER |(7 << 8) | 235) +#define RFM_WAKEUP_29s (RFM_WAKEUP_TIMER |(7 << 8) | 227) + +#define RFM_WAKEUP_8s (RFM_WAKEUP_TIMER |(5 << 8) | 250) +#define RFM_WAKEUP_7s (RFM_WAKEUP_TIMER |(5 << 8) | 219) +#define RFM_WAKEUP_6s (RFM_WAKEUP_TIMER |(6 << 8) | 94) +#define RFM_WAKEUP_5s (RFM_WAKEUP_TIMER |(5 << 8) | 156) +#define RFM_WAKEUP_4s (RFM_WAKEUP_TIMER |(5 << 8) | 125) +#define RFM_WAKEUP_1s (RFM_WAKEUP_TIMER |(2 << 8) | 250) +#define RFM_WAKEUP_900ms (RFM_WAKEUP_TIMER |(2 << 8) | 225) +#define RFM_WAKEUP_800ms (RFM_WAKEUP_TIMER |(2 << 8) | 200) +#define RFM_WAKEUP_700ms (RFM_WAKEUP_TIMER |(2 << 8) | 175) +#define RFM_WAKEUP_600ms (RFM_WAKEUP_TIMER |(2 << 8) | 150) +#define RFM_WAKEUP_500ms (RFM_WAKEUP_TIMER |(2 << 8) | 125) +#define RFM_WAKEUP_400ms (RFM_WAKEUP_TIMER |(2 << 8) | 100) +#define RFM_WAKEUP_300ms (RFM_WAKEUP_TIMER |(2 << 8) | 75) +#define RFM_WAKEUP_200ms (RFM_WAKEUP_TIMER |(2 << 8) | 50) +#define RFM_WAKEUP_100ms (RFM_WAKEUP_TIMER |(2 << 8) | 25) + +/////////////////////////////////////////////////////////////////////////////// +// +// 13. Low Duty-Cycle Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_LOW_DUTY_CYCLE 0xC800 + +/////////////////////////////////////////////////////////////////////////////// +// +// 14. Low Battery Detector Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_LOW_BATT_DETECT 0xC000 +#define RFM_LOW_BATT_DETECT_D_1MHZ 0xC000 +#define RFM_LOW_BATT_DETECT_D_1_25MHZ 0xC020 +#define RFM_LOW_BATT_DETECT_D_1_66MHZ 0xC040 +#define RFM_LOW_BATT_DETECT_D_2MHZ 0xC060 +#define RFM_LOW_BATT_DETECT_D_2_5MHZ 0xC080 +#define RFM_LOW_BATT_DETECT_D_3_33MHZ 0xC0A0 +#define RFM_LOW_BATT_DETECT_D_5MHZ 0xC0C0 +#define RFM_LOW_BATT_DETECT_D_10MHZ 0xC0E0 + +/////////////////////////////////////////////////////////////////////////////// +// +// 15. Status Read Command +// +/////////////////////////////////////////////////////////////////////////////// + +#define RFM_READ_STATUS() RFM_SPI_16(0x0000) +#define RFM_READ_STATUS_FFIT() SPI_1 (0x00) +#define RFM_READ_STATUS_RGIT RFM_READ_STATUS_FFIT + +/////////////////////////////////////////////////////////////////////////////// + +// RFM air protocol flags: + +#define RFMPROTO_FLAGS_BITASK_PACKETTYPE 0b11000000 //!< the uppermost 2 bits of the flags field encode the packettype +#define RFMPROTO_FLAGS_PACKETTYPE_BROADCAST 0b00000000 //!< broadcast packettype (message from hr20, protocol; step 1) +#define RFMPROTO_FLAGS_PACKETTYPE_COMMAND 0b01000000 //!< command packettype (message to hr20, protocol; step 2) +#define RFMPROTO_FLAGS_PACKETTYPE_REPLY 0b10000000 //!< reply packettype (message from hr20, protocol; step 3) +#define RFMPROTO_FLAGS_PACKETTYPE_SPECIAL 0b11000000 //!< currently unused packettype + +#define RFMPROTO_FLAGS_BITASK_DEVICETYPE 0b00011111 //!< the lowermost 5 bytes denote the device type. this way other sensors and actors may coexist +#define RFMPROTO_FLAGS_DEVICETYPE_OPENHR20 0b00010100 //!< topen HR20 device type. 10100 is for decimal 20 + +#define RFMPROTO_IS_PACKETTYPE_BROADCAST(FLAGS) ( RFMPROTO_FLAGS_PACKETTYPE_BROADCAST == ((FLAGS) & RFMPROTO_FLAGS_BITASK_PACKETTYPE) ) +#define RFMPROTO_IS_PACKETTYPE_COMMAND(FLAGS) ( RFMPROTO_FLAGS_PACKETTYPE_COMMAND == ((FLAGS) & RFMPROTO_FLAGS_BITASK_PACKETTYPE) ) +#define RFMPROTO_IS_PACKETTYPE_REPLY(FLAGS) ( RFMPROTO_FLAGS_PACKETTYPE_REPLY == ((FLAGS) & RFMPROTO_FLAGS_BITASK_PACKETTYPE) ) +#define RFMPROTO_IS_PACKETTYPE_SPECIAL(FLAGS) ( RFMPROTO_FLAGS_PACKETTYPE_SPECIAL == ((FLAGS) & RFMPROTO_FLAGS_BITASK_PACKETTYPE) ) +#define RFMPROTO_IS_DEVICETYPE_OPENHR20(FLAGS) ( RFMPROTO_FLAGS_DEVICETYPE_OPENHR20 == ((FLAGS) & RFMPROTO_FLAGS_BITASK_DEVICETYPE) ) + +/////////////////////////////////////////////////////////////////////////////// + +#endif \ No newline at end of file
diff -r 000000000000 -r 1b2cbe8cabf1 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue Nov 22 23:20:34 2011 +0000 @@ -0,0 +1,20 @@ +#include "mbed.h" +#include "RF12B.h" +#include <queue> + +Serial pc(USBTX, USBRX); +RF12B radiolink(p5, p6, p7, p8, p9); + +//This program just listens to pc serial and sends a "sizeofpacket" prefixed packet over rf +//for now, it is as blocking as it gets.. +int main() { + while (1) { + queue<char> qtobesent; + char packet_length = pc.getc(); + for (int i = 0; i < packet_length; i++) { + qtobesent.push(pc.getc()); + } + + radiolink.write(qtobesent); + } +}
diff -r 000000000000 -r 1b2cbe8cabf1 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Nov 22 23:20:34 2011 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912