ENEL400 / AlohaTransceiver

Basic MAC data interface for LoRa transceiver

Dependencies:   L2Frame crc

Dependents:   LoRaBaseStation LoRaTerminal

AlohaTransceiver.cpp@24:8f31c33c7675, 2016-09-02 (annotated)

Committer:
rba90
Date:
Fri Sep 02 04:43:42 2016 +0000
Revision:
24:8f31c33c7675
Parent:
23:4b51a8e27f6a
Child:
25:bcd1cee4e5a8
replace old send() by the new one

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rba90 0:e2ccabf3f30c 1 #include "AlohaTransceiver.h"
rba90 0:e2ccabf3f30c 2 #include "mbed.h"
rba90 0:e2ccabf3f30c 3 #include "radio.h"
rba90 18:3e6483550f25 4 #include "debug.h"
rba90 0:e2ccabf3f30c 5 #include "AlohaFrame.h"
rba90 15:0dc9df48687a 6 #include "RingBuffer.h"
rba90 0:e2ccabf3f30c 7
rba90 18:3e6483550f25 8
rba90 0:e2ccabf3f30c 9 // declear the type of radio state
rba90 0:e2ccabf3f30c 10 typedef enum
rba90 0:e2ccabf3f30c 11 {
rba90 0:e2ccabf3f30c 12 LOWPOWER = 0,
rba90 0:e2ccabf3f30c 13 IDLE,
rba90 0:e2ccabf3f30c 14
rba90 0:e2ccabf3f30c 15 RX,
rba90 0:e2ccabf3f30c 16 RX_TIMEOUT,
rba90 0:e2ccabf3f30c 17 RX_ERROR,
rba90 0:e2ccabf3f30c 18
rba90 0:e2ccabf3f30c 19 TX,
rba90 0:e2ccabf3f30c 20 TX_TIMEOUT,
rba90 0:e2ccabf3f30c 21
rba90 0:e2ccabf3f30c 22 CAD,
rba90 0:e2ccabf3f30c 23 CAD_DONE
rba90 0:e2ccabf3f30c 24 }AppStates_t;
rba90 0:e2ccabf3f30c 25
rba90 0:e2ccabf3f30c 26 // radio driver related variables
rba90 0:e2ccabf3f30c 27 static uint16_t BufferSize;
rba90 0:e2ccabf3f30c 28 static uint8_t Buffer[BUFFER_SIZE];
rba90 0:e2ccabf3f30c 29
rba90 0:e2ccabf3f30c 30 static int16_t RssiValue;
rba90 0:e2ccabf3f30c 31 static int8_t SnrValue;
rba90 0:e2ccabf3f30c 32
rba90 0:e2ccabf3f30c 33 static volatile AppStates_t State;
rba90 0:e2ccabf3f30c 34 static RadioEvents_t RadioEvents;
rba90 0:e2ccabf3f30c 35
rba90 17:c6e2e2cd6e5f 36
rba90 17:c6e2e2cd6e5f 37
rba90 0:e2ccabf3f30c 38 // callback functions for radio driver
rba90 0:e2ccabf3f30c 39 void OnTxDone();
rba90 0:e2ccabf3f30c 40 void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr );
rba90 0:e2ccabf3f30c 41 void OnTxTimeout();
rba90 0:e2ccabf3f30c 42 void OnRxTimeout();
rba90 0:e2ccabf3f30c 43 void OnRxError();
rba90 0:e2ccabf3f30c 44 void OnFhssChangeChannel( uint8_t channelIndex );
rba90 0:e2ccabf3f30c 45 void OnCadDone();
rba90 0:e2ccabf3f30c 46
rba90 0:e2ccabf3f30c 47 // radio driver
rba90 20:bd26d3cbc0bd 48 #ifdef DRIVER_SX1276
rba90 0:e2ccabf3f30c 49 SX1276MB1xAS Radio( NULL );
rba90 0:e2ccabf3f30c 50 #endif
rba90 0:e2ccabf3f30c 51
rba90 20:bd26d3cbc0bd 52 #ifdef DRIVER_INAIR
rba90 0:e2ccabf3f30c 53 SX1276inAir Radio( NULL );
rba90 0:e2ccabf3f30c 54 #endif
rba90 0:e2ccabf3f30c 55
rba90 0:e2ccabf3f30c 56
rba90 0:e2ccabf3f30c 57 /*
rba90 0:e2ccabf3f30c 58 * Abstract interface for accessing radio driver
rba90 0:e2ccabf3f30c 59 */
rba90 0:e2ccabf3f30c 60
rba90 11:3e1ff29da71a 61 AlohaTransceiver::AlohaTransceiver(uint8_t id)
rba90 0:e2ccabf3f30c 62 {
rba90 11:3e1ff29da71a 63 // store unique device id
rba90 11:3e1ff29da71a 64 deviceId = id;
rba90 11:3e1ff29da71a 65
rba90 17:c6e2e2cd6e5f 66 // initialize sequenceid
rba90 17:c6e2e2cd6e5f 67 memset(seqid, 0x0, sizeof(seqid));
rba90 17:c6e2e2cd6e5f 68
rba90 0:e2ccabf3f30c 69 // configure properties
rba90 0:e2ccabf3f30c 70 #if USE_MODEM_LORA == 1
rba90 0:e2ccabf3f30c 71 Settings.Power = TX_OUTPUT_POWER;
rba90 0:e2ccabf3f30c 72 Settings.Bandwidth = LORA_BANDWIDTH;
rba90 0:e2ccabf3f30c 73 Settings.Datarate = LORA_SPREADING_FACTOR;
rba90 0:e2ccabf3f30c 74 Settings.Coderate = LORA_CODINGRATE;
rba90 0:e2ccabf3f30c 75 Settings.PreambleLen = LORA_PREAMBLE_LENGTH;
rba90 0:e2ccabf3f30c 76 Settings.SymbolTimeout = LORA_SYMBOL_TIMEOUT;
rba90 0:e2ccabf3f30c 77 Settings.FixLen = LORA_FIX_LENGTH_PAYLOAD_ON;
rba90 0:e2ccabf3f30c 78 Settings.PayloadLen = 0;
rba90 0:e2ccabf3f30c 79 Settings.CrcOn = LORA_CRC_ENABLED;
rba90 0:e2ccabf3f30c 80 Settings.FreqHopOn = LORA_FHSS_ENABLED;
rba90 0:e2ccabf3f30c 81 Settings.HopPeriod = LORA_NB_SYMB_HOP;
rba90 0:e2ccabf3f30c 82 Settings.IqInverted = LORA_IQ_INVERSION_ON;
rba90 0:e2ccabf3f30c 83 Settings.RxContinuous = true;
rba90 0:e2ccabf3f30c 84 Settings.TxTimeout = TX_TIMEOUT_VALUE;
rba90 0:e2ccabf3f30c 85
rba90 0:e2ccabf3f30c 86 #elif USE_MODEM_FSK == 1
rba90 0:e2ccabf3f30c 87 // TODO: Complete settings for FSK mode
rba90 0:e2ccabf3f30c 88 #error "FSK not implemented"
rba90 0:e2ccabf3f30c 89 #else
rba90 0:e2ccabf3f30c 90 #error "Please define a modem in the compiler options."
rba90 0:e2ccabf3f30c 91 #endif
rba90 0:e2ccabf3f30c 92 }
rba90 0:e2ccabf3f30c 93
rba90 0:e2ccabf3f30c 94 AlohaTransceiver::~AlohaTransceiver()
rba90 0:e2ccabf3f30c 95 {
rba90 0:e2ccabf3f30c 96
rba90 0:e2ccabf3f30c 97 }
rba90 0:e2ccabf3f30c 98
rba90 6:f545f5aa7de3 99 void AlohaTransceiver::boardInit()
rba90 0:e2ccabf3f30c 100 {
rba90 0:e2ccabf3f30c 101 // configure callback functions
rba90 0:e2ccabf3f30c 102 RadioEvents.TxDone = OnTxDone;
rba90 0:e2ccabf3f30c 103 RadioEvents.RxDone = OnRxDone;
rba90 0:e2ccabf3f30c 104 RadioEvents.RxError = OnRxError;
rba90 0:e2ccabf3f30c 105 RadioEvents.TxTimeout = OnTxTimeout;
rba90 0:e2ccabf3f30c 106 RadioEvents.RxTimeout = OnRxTimeout;
rba90 0:e2ccabf3f30c 107 Radio.Init( &RadioEvents );
rba90 0:e2ccabf3f30c 108
rba90 0:e2ccabf3f30c 109 // verify the connection with the board
rba90 0:e2ccabf3f30c 110 while( Radio.Read( REG_VERSION ) == 0x00 )
rba90 0:e2ccabf3f30c 111 {
rba90 18:3e6483550f25 112 #ifdef DEBUG_ALOHA
rba90 18:3e6483550f25 113 debug( "Radio could not be detected!\n\r" );
rba90 18:3e6483550f25 114 #endif
rba90 0:e2ccabf3f30c 115 wait( 1 );
rba90 0:e2ccabf3f30c 116 }
rba90 18:3e6483550f25 117 #ifdef DEBUG_ALOHA
rba90 0:e2ccabf3f30c 118 printf("RadioRegVersion: %d\r\n", Radio.Read( REG_VERSION ));
rba90 18:3e6483550f25 119 #endif
rba90 0:e2ccabf3f30c 120 }
rba90 0:e2ccabf3f30c 121
rba90 0:e2ccabf3f30c 122 void AlohaTransceiver::updateSettings()
rba90 0:e2ccabf3f30c 123 {
rba90 6:f545f5aa7de3 124 Radio.SetChannel( RF_FREQUENCY );
rba90 0:e2ccabf3f30c 125 #if USE_MODEM_LORA == 1
rba90 0:e2ccabf3f30c 126
rba90 0:e2ccabf3f30c 127 Radio.SetTxConfig( MODEM_LORA, Settings.Power, 0, Settings.Bandwidth,
rba90 0:e2ccabf3f30c 128 Settings.Datarate, Settings.Coderate,
rba90 0:e2ccabf3f30c 129 Settings.PreambleLen, Settings.FixLen,
rba90 0:e2ccabf3f30c 130 Settings.CrcOn, Settings.FreqHopOn, Settings.HopPeriod,
rba90 0:e2ccabf3f30c 131 Settings.IqInverted, Settings.TxTimeout );
rba90 0:e2ccabf3f30c 132
rba90 0:e2ccabf3f30c 133 Radio.SetRxConfig( MODEM_LORA, Settings.Bandwidth, Settings.Datarate,
rba90 0:e2ccabf3f30c 134 Settings.Coderate, 0, Settings.PreambleLen,
rba90 0:e2ccabf3f30c 135 Settings.SymbolTimeout, Settings.FixLen, Settings.PayloadLen,
rba90 0:e2ccabf3f30c 136 Settings.CrcOn, Settings.FreqHopOn, Settings.HopPeriod,
rba90 0:e2ccabf3f30c 137 Settings.IqInverted, Settings.RxContinuous );
rba90 0:e2ccabf3f30c 138
rba90 0:e2ccabf3f30c 139 #elif USE_MODEM_FSK == 1
rba90 0:e2ccabf3f30c 140 #error "FSK not implemented"
rba90 0:e2ccabf3f30c 141 #else
rba90 0:e2ccabf3f30c 142 #error "Please define a modem in the compiler options."
rba90 0:e2ccabf3f30c 143 #endif
rba90 0:e2ccabf3f30c 144 }
rba90 0:e2ccabf3f30c 145
rba90 6:f545f5aa7de3 146 void AlohaTransceiver::enable()
rba90 6:f545f5aa7de3 147 {
rba90 6:f545f5aa7de3 148 // entering passive receiver mode
rba90 10:065a4b58c6ff 149 Radio.Rx( 0 );
rba90 6:f545f5aa7de3 150 }
rba90 6:f545f5aa7de3 151
rba90 0:e2ccabf3f30c 152 void AlohaTransceiver::poll()
rba90 0:e2ccabf3f30c 153 {
rba90 0:e2ccabf3f30c 154 switch( State )
rba90 0:e2ccabf3f30c 155 {
rba90 0:e2ccabf3f30c 156 case RX:
rba90 5:c3741633dc6f 157 {
rba90 0:e2ccabf3f30c 158 // create new frame instance
rba90 0:e2ccabf3f30c 159 AlohaFrame frame(Buffer, BufferSize);
rba90 0:e2ccabf3f30c 160
rba90 11:3e1ff29da71a 161 // check destination
rba90 11:3e1ff29da71a 162 // if the destination is the device id, then processing, otherwise drop the packet and continue
rba90 11:3e1ff29da71a 163 // listening
rba90 11:3e1ff29da71a 164 if (frame.getDestinationAddress() == (deviceId & 0x0f))
rba90 17:c6e2e2cd6e5f 165 {
rba90 17:c6e2e2cd6e5f 166 // currently we only have 1 payload per frame
rba90 17:c6e2e2cd6e5f 167 uint8_t payload_length = frame.getPayloadLength();
rba90 17:c6e2e2cd6e5f 168 uint8_t payload[payload_length];
rba90 17:c6e2e2cd6e5f 169 uint8_t src_addr = frame.getSourceAddress();
rba90 17:c6e2e2cd6e5f 170 uint8_t type = frame.getType();
rba90 17:c6e2e2cd6e5f 171
rba90 17:c6e2e2cd6e5f 172 // extract payload
rba90 17:c6e2e2cd6e5f 173 for (uint8_t i = 0; i < payload_length; i++)
rba90 17:c6e2e2cd6e5f 174 {
rba90 17:c6e2e2cd6e5f 175 payload[i] = frame.getPayload(i);
rba90 17:c6e2e2cd6e5f 176 }
rba90 17:c6e2e2cd6e5f 177
rba90 11:3e1ff29da71a 178 // check registered callback function
rba90 11:3e1ff29da71a 179 // execute callback functions if registered
rba90 17:c6e2e2cd6e5f 180
rba90 17:c6e2e2cd6e5f 181 if (AlohaTypeCallbackTable[type] != NULL)
rba90 11:3e1ff29da71a 182 {
rba90 17:c6e2e2cd6e5f 183 AlohaTypeCallbackTable[type](payload, payload_length, src_addr);
rba90 11:3e1ff29da71a 184 }
rba90 0:e2ccabf3f30c 185 }
rba90 0:e2ccabf3f30c 186
rba90 10:065a4b58c6ff 187 Radio.Rx( 0 );
rba90 0:e2ccabf3f30c 188 State = LOWPOWER;
rba90 0:e2ccabf3f30c 189 break;
rba90 0:e2ccabf3f30c 190 }
rba90 0:e2ccabf3f30c 191 case TX:
rba90 0:e2ccabf3f30c 192 {
rba90 10:065a4b58c6ff 193 Radio.Rx( 0 );
rba90 0:e2ccabf3f30c 194 State = LOWPOWER;
rba90 0:e2ccabf3f30c 195 break;
rba90 0:e2ccabf3f30c 196 }
rba90 0:e2ccabf3f30c 197 case RX_TIMEOUT:
rba90 0:e2ccabf3f30c 198 {
rba90 10:065a4b58c6ff 199 Radio.Rx( 0 );
rba90 0:e2ccabf3f30c 200 State = LOWPOWER;
rba90 0:e2ccabf3f30c 201 break;
rba90 0:e2ccabf3f30c 202 }
rba90 0:e2ccabf3f30c 203 case RX_ERROR:
rba90 0:e2ccabf3f30c 204 {
rba90 10:065a4b58c6ff 205 Radio.Rx( 0 );
rba90 0:e2ccabf3f30c 206 State = LOWPOWER;
rba90 0:e2ccabf3f30c 207 break;
rba90 0:e2ccabf3f30c 208 }
rba90 0:e2ccabf3f30c 209 case TX_TIMEOUT:
rba90 0:e2ccabf3f30c 210 {
rba90 10:065a4b58c6ff 211 Radio.Rx( 0 );
rba90 0:e2ccabf3f30c 212 State = LOWPOWER;
rba90 0:e2ccabf3f30c 213 break;
rba90 0:e2ccabf3f30c 214 }
rba90 0:e2ccabf3f30c 215 case LOWPOWER:
rba90 0:e2ccabf3f30c 216 {
rba90 22:2e39f382f782 217 // transmit packet when the radio is free
rba90 23:4b51a8e27f6a 218 if (AlohaTxQueue.getCounter() > 0)
rba90 22:2e39f382f782 219 {
rba90 22:2e39f382f782 220 AlohaFrame *frame = AlohaTxQueue.dequeue();
rba90 22:2e39f382f782 221
rba90 22:2e39f382f782 222 // create a buffer for transmit
rba90 22:2e39f382f782 223 uint8_t frame_length = frame->getPayloadLength() + FIXED_BYTE;
rba90 22:2e39f382f782 224 uint8_t buffer[frame_length]; // 4 fix fields
rba90 22:2e39f382f782 225 memset(buffer, 0x0, sizeof(buffer));
rba90 22:2e39f382f782 226
rba90 22:2e39f382f782 227 // copy content to buffer
rba90 22:2e39f382f782 228 frame->serialize(buffer);
rba90 22:2e39f382f782 229
rba90 22:2e39f382f782 230 // send to radio
rba90 22:2e39f382f782 231 Radio.Send(buffer, frame_length);
rba90 22:2e39f382f782 232
rba90 22:2e39f382f782 233 // free memory
rba90 22:2e39f382f782 234 delete frame;
rba90 22:2e39f382f782 235 }
rba90 0:e2ccabf3f30c 236 break;
rba90 0:e2ccabf3f30c 237 }
rba90 0:e2ccabf3f30c 238 default:
rba90 0:e2ccabf3f30c 239 {
rba90 0:e2ccabf3f30c 240 State = LOWPOWER;
rba90 0:e2ccabf3f30c 241 break;
rba90 0:e2ccabf3f30c 242 }
rba90 0:e2ccabf3f30c 243 }
rba90 0:e2ccabf3f30c 244 }
rba90 0:e2ccabf3f30c 245
rba90 24:8f31c33c7675 246 bool AlohaTransceiver::send(BasicPacket *packet)
rba90 24:8f31c33c7675 247 {
rba90 24:8f31c33c7675 248 // for the reason that we only transmit basic packet format, the
rba90 24:8f31c33c7675 249 // length is always 8
rba90 24:8f31c33c7675 250 uint8_t payload_length = 8;
rba90 24:8f31c33c7675 251
rba90 24:8f31c33c7675 252 // get destination address
rba90 24:8f31c33c7675 253 uint8_t destination_address = findNextHop(packet->getDestinationID());
rba90 24:8f31c33c7675 254
rba90 24:8f31c33c7675 255 // serialize the packet from upper layer
rba90 24:8f31c33c7675 256 uint8_t buffer[payload_length];
rba90 24:8f31c33c7675 257 memset(buffer, 0x0, sizeof(buffer));
rba90 24:8f31c33c7675 258
rba90 24:8f31c33c7675 259 // copy bytes into buffer
rba90 24:8f31c33c7675 260 packet->serialize(buffer);
rba90 17:c6e2e2cd6e5f 261
rba90 17:c6e2e2cd6e5f 262 // create a new frame
rba90 22:2e39f382f782 263 AlohaFrame *frame = new AlohaFrame();
rba90 17:c6e2e2cd6e5f 264
rba90 22:2e39f382f782 265 // set properfies
rba90 24:8f31c33c7675 266 // set payload as data
rba90 22:2e39f382f782 267 frame->setType(AlohaFrame::Aloha_Data);
rba90 24:8f31c33c7675 268
rba90 24:8f31c33c7675 269 // set payload length (8 bytes for BasicPacket)
rba90 22:2e39f382f782 270 frame->setPayloadLength(payload_length);
rba90 24:8f31c33c7675 271
rba90 24:8f31c33c7675 272 // set mac layer device id
rba90 22:2e39f382f782 273 frame->setSourceAddress(deviceId);
rba90 24:8f31c33c7675 274
rba90 24:8f31c33c7675 275 // set mac layer destination id
rba90 24:8f31c33c7675 276 // for multiple hop system, the destination is the next hop
rba90 24:8f31c33c7675 277 // in this case, we use destination id from upper layer
rba90 24:8f31c33c7675 278 frame->setDestinationAddress(packet->getDestinationID());
rba90 24:8f31c33c7675 279
rba90 24:8f31c33c7675 280 // set full message flag (always true in this case)
rba90 22:2e39f382f782 281 frame->setFullMessageFlag(0x1);
rba90 22:2e39f382f782 282
rba90 24:8f31c33c7675 283 // use dest_addr as key for accessing sequence id
rba90 24:8f31c33c7675 284 // the seqid should increase as it successfully transmit the packet
rba90 24:8f31c33c7675 285 frame->setSequenceID(seqid[destination_address]++);
rba90 24:8f31c33c7675 286
rba90 22:2e39f382f782 287 // set payload
rba90 17:c6e2e2cd6e5f 288 for (uint8_t i = 0; i < payload_length; i++)
rba90 17:c6e2e2cd6e5f 289 {
rba90 24:8f31c33c7675 290 frame->setPayload(i, buffer[i]);
rba90 17:c6e2e2cd6e5f 291 }
rba90 17:c6e2e2cd6e5f 292
rba90 17:c6e2e2cd6e5f 293 // calculate crc
rba90 22:2e39f382f782 294 frame->generateCrc();
rba90 17:c6e2e2cd6e5f 295
rba90 22:2e39f382f782 296 // push frame to the back of queue
rba90 22:2e39f382f782 297 AlohaTxQueue.enqueue(frame);
rba90 24:8f31c33c7675 298
rba90 17:c6e2e2cd6e5f 299 return true;
rba90 0:e2ccabf3f30c 300 }
rba90 0:e2ccabf3f30c 301
rba90 0:e2ccabf3f30c 302 void AlohaTransceiver::registerType(AlohaFrame::AlohaType_t type, aloha_callback_func f)
rba90 0:e2ccabf3f30c 303 {
rba90 0:e2ccabf3f30c 304 AlohaTypeCallbackTable[type] = f;
rba90 0:e2ccabf3f30c 305 }
rba90 0:e2ccabf3f30c 306
rba90 0:e2ccabf3f30c 307 void AlohaTransceiver::deRegisterType(AlohaFrame::AlohaType_t type, aloha_callback_func f)
rba90 0:e2ccabf3f30c 308 {
rba90 0:e2ccabf3f30c 309 AlohaTypeCallbackTable[type] = NULL;
rba90 0:e2ccabf3f30c 310 }
rba90 0:e2ccabf3f30c 311
rba90 2:fa264e48d5f7 312 int16_t AlohaTransceiver::getRssi()
rba90 2:fa264e48d5f7 313 {
rba90 2:fa264e48d5f7 314 return RssiValue;
rba90 2:fa264e48d5f7 315 }
rba90 2:fa264e48d5f7 316
rba90 2:fa264e48d5f7 317 int8_t AlohaTransceiver::getSnr()
rba90 2:fa264e48d5f7 318 {
rba90 2:fa264e48d5f7 319 return SnrValue;
rba90 2:fa264e48d5f7 320 }
rba90 2:fa264e48d5f7 321
rba90 17:c6e2e2cd6e5f 322 uint8_t AlohaTransceiver::getDeviceID()
rba90 11:3e1ff29da71a 323 {
rba90 11:3e1ff29da71a 324 return deviceId;
rba90 11:3e1ff29da71a 325 }
rba90 11:3e1ff29da71a 326
rba90 17:c6e2e2cd6e5f 327 void AlohaTransceiver::setDeviceID(uint8_t id)
rba90 11:3e1ff29da71a 328 {
rba90 11:3e1ff29da71a 329 deviceId = id;
rba90 11:3e1ff29da71a 330 }
rba90 11:3e1ff29da71a 331
rba90 24:8f31c33c7675 332 uint8_t AlohaTransceiver::findNextHop(uint8_t addr)
rba90 24:8f31c33c7675 333 {
rba90 24:8f31c33c7675 334 // TODO: maintain a routing lookup table for choosing shortest path
rba90 24:8f31c33c7675 335 return addr;
rba90 24:8f31c33c7675 336 }
rba90 24:8f31c33c7675 337
rba90 8:4bda842f73d4 338 #if USE_MODEM_LORA == 1
rba90 8:4bda842f73d4 339 AlohaTransceiver::LoRaSettings_t *AlohaTransceiver::getSettings()
rba90 8:4bda842f73d4 340 {
rba90 8:4bda842f73d4 341 return &Settings;
rba90 8:4bda842f73d4 342 }
rba90 8:4bda842f73d4 343
rba90 8:4bda842f73d4 344 #elif USE_MODEM_FSK == 1
rba90 8:4bda842f73d4 345 AlohaTransceiver::FskSettings_t *AlohaTransceiver::getSettings()
rba90 8:4bda842f73d4 346 {
rba90 8:4bda842f73d4 347 return &Settings;
rba90 8:4bda842f73d4 348 }
rba90 8:4bda842f73d4 349 #else
rba90 8:4bda842f73d4 350 #error "Please define a modem in the compiler options."
rba90 8:4bda842f73d4 351 #endif
rba90 8:4bda842f73d4 352
rba90 0:e2ccabf3f30c 353 void OnTxDone( void )
rba90 0:e2ccabf3f30c 354 {
rba90 0:e2ccabf3f30c 355 Radio.Sleep( );
rba90 0:e2ccabf3f30c 356 State = TX;
rba90 18:3e6483550f25 357
rba90 18:3e6483550f25 358 #ifdef DEBUG_ALOHA
rba90 18:3e6483550f25 359 debug("> OnTxDone\n\r" );
rba90 18:3e6483550f25 360 #endif
rba90 0:e2ccabf3f30c 361 }
rba90 0:e2ccabf3f30c 362
rba90 0:e2ccabf3f30c 363 void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr)
rba90 0:e2ccabf3f30c 364 {
rba90 0:e2ccabf3f30c 365 Radio.Sleep( );
rba90 0:e2ccabf3f30c 366
rba90 0:e2ccabf3f30c 367 // safeguard: if size exceeded maximum buffer size, it will cause memory overflow
rba90 0:e2ccabf3f30c 368 BufferSize = size ? BUFFER_SIZE : size <= BUFFER_SIZE;
rba90 0:e2ccabf3f30c 369
rba90 0:e2ccabf3f30c 370 memcpy( Buffer, payload, BufferSize );
rba90 0:e2ccabf3f30c 371 RssiValue = rssi;
rba90 0:e2ccabf3f30c 372 SnrValue = snr;
rba90 0:e2ccabf3f30c 373 State = RX;
rba90 18:3e6483550f25 374
rba90 18:3e6483550f25 375 #ifdef DEBUG_ALOHA
rba90 18:3e6483550f25 376 debug("> OnRxDone\n\r" );
rba90 18:3e6483550f25 377 #endif
rba90 0:e2ccabf3f30c 378 }
rba90 0:e2ccabf3f30c 379
rba90 0:e2ccabf3f30c 380 void OnTxTimeout( void )
rba90 0:e2ccabf3f30c 381 {
rba90 0:e2ccabf3f30c 382 Radio.Sleep( );
rba90 0:e2ccabf3f30c 383 State = TX_TIMEOUT;
rba90 18:3e6483550f25 384
rba90 18:3e6483550f25 385 #ifdef DEBUG_ALOHA
rba90 18:3e6483550f25 386 debug("> OnTxTimeout\n\r" );
rba90 18:3e6483550f25 387 #endif
rba90 0:e2ccabf3f30c 388 }
rba90 0:e2ccabf3f30c 389
rba90 0:e2ccabf3f30c 390 void OnRxTimeout( void )
rba90 0:e2ccabf3f30c 391 {
rba90 0:e2ccabf3f30c 392 Radio.Sleep( );
rba90 0:e2ccabf3f30c 393 Buffer[ BufferSize ] = 0;
rba90 0:e2ccabf3f30c 394 State = RX_TIMEOUT;
rba90 18:3e6483550f25 395
rba90 18:3e6483550f25 396 #ifdef DEBUG_ALOHA
rba90 18:3e6483550f25 397 debug("> OnRxTimeout\n\r" );
rba90 18:3e6483550f25 398 #endif
rba90 0:e2ccabf3f30c 399 }
rba90 0:e2ccabf3f30c 400
rba90 0:e2ccabf3f30c 401 void OnRxError( void )
rba90 0:e2ccabf3f30c 402 {
rba90 0:e2ccabf3f30c 403 Radio.Sleep( );
rba90 0:e2ccabf3f30c 404 State = RX_ERROR;
rba90 18:3e6483550f25 405
rba90 18:3e6483550f25 406 #ifdef DEBUG_ALOHA
rba90 18:3e6483550f25 407 debug( "> OnRxError\n\r" );
rba90 18:3e6483550f25 408 #endif
rba90 0:e2ccabf3f30c 409 }
rba90 24:8f31c33c7675 410