Lukas Formanek / Mbed 2 deprecated LoRa_Access_Point

LoRa Access Point 1.5.2018

Dependencies:   mbed ds3231 SX1276Lib_LoRa_Access_Point

RFM95W.cpp@4:e20eb5efd859, 2018-04-30 (annotated)

Committer:
lukas_formanek
Date:
Mon Apr 30 17:09:34 2018 +0000
Revision:
4:e20eb5efd859
Parent:
3:7a3ddda464bf
Child:
5:19b34c4d27a1
30.4.2018

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lukas_formanek 0:ea088908ad26 1 #include "RFM95W.h"
lukas_formanek 0:ea088908ad26 2
lukas_formanek 0:ea088908ad26 3 RFM95W rfm; // Globalna instancia
lukas_formanek 0:ea088908ad26 4
lukas_formanek 0:ea088908ad26 5 //--------------------------- Callback funkcie ---------------------------------
lukas_formanek 0:ea088908ad26 6 void TxDone(void){rfm.OnTxDone();};
lukas_formanek 0:ea088908ad26 7
lukas_formanek 0:ea088908ad26 8 void RxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr ){rfm.OnRxDone(payload,size,rssi,snr);};
lukas_formanek 0:ea088908ad26 9
lukas_formanek 0:ea088908ad26 10 void TxTimeout(void){rfm.OnTxTimeout();};
lukas_formanek 0:ea088908ad26 11
lukas_formanek 0:ea088908ad26 12 void RxTimeout(void){rfm.OnRxTimeout();};
lukas_formanek 0:ea088908ad26 13
lukas_formanek 0:ea088908ad26 14 void RxError(void){rfm.OnRxError();};
lukas_formanek 0:ea088908ad26 15
lukas_formanek 0:ea088908ad26 16 void CadDone(bool channelActivityDetected){rfm.OnCadDone(channelActivityDetected);};
lukas_formanek 0:ea088908ad26 17 //------------------------------------------------------------------------------
lukas_formanek 0:ea088908ad26 18
lukas_formanek 0:ea088908ad26 19 RFM95W::RFM95W()
lukas_formanek 0:ea088908ad26 20 : radio(NULL),
lukas_formanek 3:7a3ddda464bf 21 indicationLed(LED_PIN),
lukas_formanek 3:7a3ddda464bf 22 noise(NOISE_PIN)
lukas_formanek 0:ea088908ad26 23 {
lukas_formanek 0:ea088908ad26 24 for(uint16_t i=0; i<MAX_DEVICES;i++)
lukas_formanek 3:7a3ddda464bf 25 messageNumbers[i]=NULL;
lukas_formanek 0:ea088908ad26 26 memset(receivedMessage, '\0', sizeof(receivedMessage));
lukas_formanek 0:ea088908ad26 27 ledState = 0;
lukas_formanek 0:ea088908ad26 28 timeOnAirSec = 0.3;
lukas_formanek 0:ea088908ad26 29 indicationLed = 1;
lukas_formanek 3:7a3ddda464bf 30 messageNumber = GATEWAY_ID;
lukas_formanek 3:7a3ddda464bf 31 sendCounter = 0;
lukas_formanek 3:7a3ddda464bf 32 receivedAck = false;
lukas_formanek 0:ea088908ad26 33 };
lukas_formanek 0:ea088908ad26 34
lukas_formanek 0:ea088908ad26 35 void RFM95W::OnLedTick()
lukas_formanek 0:ea088908ad26 36 {
lukas_formanek 0:ea088908ad26 37 if(ledState<6) {
lukas_formanek 0:ea088908ad26 38 indicationLed = !indicationLed;
lukas_formanek 0:ea088908ad26 39 } else {
lukas_formanek 0:ea088908ad26 40 ledState = 0;
lukas_formanek 0:ea088908ad26 41 indicationLed = 1;
lukas_formanek 0:ea088908ad26 42 ledTicker.detach();
lukas_formanek 0:ea088908ad26 43 }
lukas_formanek 0:ea088908ad26 44 ledState++;
lukas_formanek 0:ea088908ad26 45 }
lukas_formanek 0:ea088908ad26 46
lukas_formanek 3:7a3ddda464bf 47 void RFM95W::SendMessage()
lukas_formanek 3:7a3ddda464bf 48 {
lukas_formanek 3:7a3ddda464bf 49 snprintf((char *)ack, 3, "%c%c%c",GATEWAY_ID, sendBuffer[0], messageNumber);
lukas_formanek 4:e20eb5efd859 50 radio.Send( sendBuffer, 15 ); // poslem len 10 bajtov
lukas_formanek 3:7a3ddda464bf 51 }
lukas_formanek 3:7a3ddda464bf 52
lukas_formanek 0:ea088908ad26 53 void RFM95W::SendAck(uint8_t addr, uint8_t messageNumber)
lukas_formanek 0:ea088908ad26 54 {
lukas_formanek 0:ea088908ad26 55 uint8_t ack[3];
lukas_formanek 3:7a3ddda464bf 56 snprintf((char *)ack, sizeof(ack), "%c%c%c", addr, GATEWAY_ID, messageNumber);
lukas_formanek 0:ea088908ad26 57 pc.printf("Sending Ack : %s \r\n",ack);
lukas_formanek 0:ea088908ad26 58 radio.Send(ack, 3);
lukas_formanek 0:ea088908ad26 59 };
lukas_formanek 0:ea088908ad26 60
lukas_formanek 3:7a3ddda464bf 61 float RFM95W::CalculateRandomTime()
lukas_formanek 3:7a3ddda464bf 62 {
lukas_formanek 4:e20eb5efd859 63 uint8_t number = rand() % 1500;;
lukas_formanek 4:e20eb5efd859 64 while(number == 0) {number = rand() % 1500;}
lukas_formanek 4:e20eb5efd859 65 return (timeOnAirSec * (number / 150.0));
lukas_formanek 3:7a3ddda464bf 66 };
lukas_formanek 3:7a3ddda464bf 67
lukas_formanek 3:7a3ddda464bf 68 void RFM95W::OnCheckAck()
lukas_formanek 3:7a3ddda464bf 69 {
lukas_formanek 3:7a3ddda464bf 70 if((receivedAck == false) && (sendCounter < MAX_RESENDS))
lukas_formanek 4:e20eb5efd859 71 sendTicker.attach(callback(this,&RFM95W::OnSendAgain), CalculateRandomTime());
lukas_formanek 4:e20eb5efd859 72 else if((receivedAck == false) && (sendCounter >= MAX_RESENDS))
lukas_formanek 3:7a3ddda464bf 73 {
lukas_formanek 4:e20eb5efd859 74 messageNumber++;
lukas_formanek 4:e20eb5efd859 75 if(messageNumber>255)
lukas_formanek 4:e20eb5efd859 76 messageNumber = 0;
lukas_formanek 3:7a3ddda464bf 77 }
lukas_formanek 3:7a3ddda464bf 78 ackTicker.detach();
lukas_formanek 3:7a3ddda464bf 79 };
lukas_formanek 3:7a3ddda464bf 80
lukas_formanek 3:7a3ddda464bf 81 void RFM95W::OnSendAgain()
lukas_formanek 3:7a3ddda464bf 82 {
lukas_formanek 4:e20eb5efd859 83 pc.printf("On send again \r\n");
lukas_formanek 3:7a3ddda464bf 84 SendMessage();
lukas_formanek 3:7a3ddda464bf 85 sendCounter++;
lukas_formanek 3:7a3ddda464bf 86 sendTicker.detach();
lukas_formanek 3:7a3ddda464bf 87 };
lukas_formanek 3:7a3ddda464bf 88
lukas_formanek 0:ea088908ad26 89 void RFM95W::OnTxDone( void )
lukas_formanek 0:ea088908ad26 90 {
lukas_formanek 0:ea088908ad26 91 radio.Sleep();
lukas_formanek 3:7a3ddda464bf 92 if(sendingAck)
lukas_formanek 3:7a3ddda464bf 93 sendingAck = false;
lukas_formanek 3:7a3ddda464bf 94 else
lukas_formanek 3:7a3ddda464bf 95 {
lukas_formanek 4:e20eb5efd859 96 pc.printf("OnTxDone !\r\n");
lukas_formanek 3:7a3ddda464bf 97 receivedAck = false;
lukas_formanek 3:7a3ddda464bf 98 ackTicker.attach(callback(this,&RFM95W::OnCheckAck),timeOnAirSec*3);
lukas_formanek 3:7a3ddda464bf 99 }
lukas_formanek 0:ea088908ad26 100 radio.Rx(0);
lukas_formanek 0:ea088908ad26 101 };
lukas_formanek 0:ea088908ad26 102
lukas_formanek 0:ea088908ad26 103 void RFM95W::OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
lukas_formanek 0:ea088908ad26 104 {
lukas_formanek 0:ea088908ad26 105 radio.Sleep();
lukas_formanek 3:7a3ddda464bf 106 // debug("%d \r\n", payload[0]);
lukas_formanek 3:7a3ddda464bf 107 if(payload[0] == GATEWAY_ID) {
lukas_formanek 3:7a3ddda464bf 108 indicationLed=0;
lukas_formanek 3:7a3ddda464bf 109 ledTicker.attach(callback(this,&RFM95W::OnLedTick), LED_BLIK_PERIOD);
lukas_formanek 3:7a3ddda464bf 110 if((size == 3) && (strncmp( ( const char* )payload, ( const char* )ack, 3 ) == 0) )
lukas_formanek 3:7a3ddda464bf 111 {
lukas_formanek 3:7a3ddda464bf 112 receivedAck = true;
lukas_formanek 3:7a3ddda464bf 113 pc.printf("Received Ack : %s \r\n",ack);
lukas_formanek 3:7a3ddda464bf 114 messageNumber++;
lukas_formanek 3:7a3ddda464bf 115 if(messageNumber>255)
lukas_formanek 3:7a3ddda464bf 116 messageNumber = 0;
lukas_formanek 3:7a3ddda464bf 117 radio.Rx(0);
lukas_formanek 3:7a3ddda464bf 118 return;
lukas_formanek 3:7a3ddda464bf 119 }
lukas_formanek 3:7a3ddda464bf 120 sendingAck = true;
lukas_formanek 0:ea088908ad26 121 // moje ID - adresa brany, konverzia na cislo
lukas_formanek 3:7a3ddda464bf 122 uint8_t msgFrom = payload[1]; // konverzia na cislo
lukas_formanek 3:7a3ddda464bf 123 SendAck(msgFrom,payload[2]);
lukas_formanek 3:7a3ddda464bf 124 pc.printf("MSG from : %c , message number received= %d \r\n",msgFrom,payload[2]);
lukas_formanek 3:7a3ddda464bf 125 if(payload[2] == messageNumbers[msgFrom])
lukas_formanek 0:ea088908ad26 126 {
lukas_formanek 0:ea088908ad26 127 pc.printf("--------------------- Ta ista sprava -------------------- \r\n");
lukas_formanek 3:7a3ddda464bf 128 // radio.Rx(0);
lukas_formanek 0:ea088908ad26 129 return;
lukas_formanek 0:ea088908ad26 130 }
lukas_formanek 3:7a3ddda464bf 131 messageNumbers[msgFrom] = payload[2];
lukas_formanek 0:ea088908ad26 132 payload[2] = 48; // ASCII hodnota cisla 0
lukas_formanek 3:7a3ddda464bf 133 // pc.printf("Message number saved= %d \r\n",messageNumbers[MsgFrom]);
lukas_formanek 3:7a3ddda464bf 134
lukas_formanek 3:7a3ddda464bf 135 memmove(payload, payload+4, size - 4 + 1); // orezem prve styri bajty
lukas_formanek 3:7a3ddda464bf 136
lukas_formanek 3:7a3ddda464bf 137 snprintf((char *)receivedMessage, BUFF_SIZE, "%d|%d|%d|%d|%s|\r\n", rssi, snr, GATEWAY_ID, msgFrom, payload);
lukas_formanek 0:ea088908ad26 138 wifi.SendMessage((char *)receivedMessage);
lukas_formanek 0:ea088908ad26 139 // debug_if( DEBUG_MESSAGE, "> OnRxDone\n\r" );
lukas_formanek 3:7a3ddda464bf 140
lukas_formanek 0:ea088908ad26 141 return;
lukas_formanek 0:ea088908ad26 142 }
lukas_formanek 3:7a3ddda464bf 143 radio.Rx(0); // som zakomentil :P
lukas_formanek 0:ea088908ad26 144 };
lukas_formanek 0:ea088908ad26 145
lukas_formanek 0:ea088908ad26 146 void RFM95W::OnTxTimeout( void )
lukas_formanek 0:ea088908ad26 147 {
lukas_formanek 0:ea088908ad26 148 radio.Sleep();
lukas_formanek 0:ea088908ad26 149 Init();
lukas_formanek 3:7a3ddda464bf 150 // radio.Rx(0);
lukas_formanek 0:ea088908ad26 151 };
lukas_formanek 0:ea088908ad26 152
lukas_formanek 0:ea088908ad26 153 void RFM95W::OnRxTimeout( void )
lukas_formanek 0:ea088908ad26 154 {
lukas_formanek 0:ea088908ad26 155 radio.Sleep();
lukas_formanek 0:ea088908ad26 156 radio.Rx(0);
lukas_formanek 0:ea088908ad26 157 };
lukas_formanek 0:ea088908ad26 158
lukas_formanek 0:ea088908ad26 159 void RFM95W::OnRxError( void )
lukas_formanek 0:ea088908ad26 160 {
lukas_formanek 0:ea088908ad26 161 radio.Sleep();
lukas_formanek 0:ea088908ad26 162 pc.printf("Chyba prijatia ! \r\n");
lukas_formanek 0:ea088908ad26 163 radio.Rx(0);
lukas_formanek 0:ea088908ad26 164 };
lukas_formanek 0:ea088908ad26 165
lukas_formanek 0:ea088908ad26 166 void RFM95W::OnCadDone( bool channelActivityDetected ){};
lukas_formanek 0:ea088908ad26 167
lukas_formanek 3:7a3ddda464bf 168 void RFM95W::SendValue(uint8_t addr, float value)
lukas_formanek 3:7a3ddda464bf 169 {
lukas_formanek 3:7a3ddda464bf 170 snprintf((char *)sendBuffer, BUFF_SIZE, "%c%c%c|%.2f|",addr, GATEWAY_ID, messageNumber, value);
lukas_formanek 3:7a3ddda464bf 171 sendCounter = 0;
lukas_formanek 3:7a3ddda464bf 172 receivedAck = false;
lukas_formanek 4:e20eb5efd859 173 SendMessage();
lukas_formanek 4:e20eb5efd859 174 };
lukas_formanek 4:e20eb5efd859 175
lukas_formanek 4:e20eb5efd859 176 void RFM95W::SendValue(uint8_t addr, int value)
lukas_formanek 4:e20eb5efd859 177 {
lukas_formanek 4:e20eb5efd859 178 snprintf((char *)sendBuffer, BUFF_SIZE, "%c%c%c|%d|",addr, GATEWAY_ID, messageNumber, value);
lukas_formanek 4:e20eb5efd859 179 sendCounter = 0;
lukas_formanek 4:e20eb5efd859 180 receivedAck = false;
lukas_formanek 4:e20eb5efd859 181 SendMessage();
lukas_formanek 4:e20eb5efd859 182 };
lukas_formanek 4:e20eb5efd859 183
lukas_formanek 4:e20eb5efd859 184 void RFM95W::SendMessage(char* message)
lukas_formanek 4:e20eb5efd859 185 {
lukas_formanek 4:e20eb5efd859 186 snprintf((char *)sendBuffer, BUFF_SIZE, "%s", message);
lukas_formanek 4:e20eb5efd859 187 sendBuffer[0] = (char)sendBuffer[0];
lukas_formanek 4:e20eb5efd859 188 sendBuffer[1] = (char)GATEWAY_ID;
lukas_formanek 4:e20eb5efd859 189 sendBuffer[2] = (char)messageNumber;
lukas_formanek 4:e20eb5efd859 190 sendCounter = 0;
lukas_formanek 4:e20eb5efd859 191 receivedAck = false;
lukas_formanek 4:e20eb5efd859 192
lukas_formanek 4:e20eb5efd859 193 pc.printf("%s",sendBuffer);
lukas_formanek 4:e20eb5efd859 194 SendMessage();
lukas_formanek 3:7a3ddda464bf 195 };
lukas_formanek 3:7a3ddda464bf 196
lukas_formanek 0:ea088908ad26 197 void RFM95W::Init( void )
lukas_formanek 0:ea088908ad26 198 {
lukas_formanek 0:ea088908ad26 199 pc.printf( "\n\n\r------- RFM95W GATEWAY -------\n\r" );
lukas_formanek 0:ea088908ad26 200 // Initialize Radio driver
lukas_formanek 0:ea088908ad26 201 radioEvents.TxDone = TxDone;
lukas_formanek 0:ea088908ad26 202 radioEvents.RxDone = RxDone;
lukas_formanek 0:ea088908ad26 203 radioEvents.RxError = RxError;
lukas_formanek 0:ea088908ad26 204 radioEvents.TxTimeout = TxTimeout;
lukas_formanek 0:ea088908ad26 205 radioEvents.RxTimeout = RxTimeout;
lukas_formanek 0:ea088908ad26 206 radioEvents.CadDone = CadDone;
lukas_formanek 0:ea088908ad26 207 radio.Init( &radioEvents );
lukas_formanek 0:ea088908ad26 208 // verify the connection with the board
lukas_formanek 0:ea088908ad26 209 while( radio.Read( REG_VERSION ) == 0x00 ) {
lukas_formanek 0:ea088908ad26 210 pc.printf( "Radiovy modul nie je pripojeny!\n\r", NULL );
lukas_formanek 0:ea088908ad26 211 wait(1);
lukas_formanek 0:ea088908ad26 212 }
lukas_formanek 0:ea088908ad26 213
lukas_formanek 0:ea088908ad26 214 // debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1276MB1LAS ) ) , "\n\r > TYP: RFM95W < \n\r" );
lukas_formanek 0:ea088908ad26 215 // debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1276MB1MAS ) ) , "\n\r > TYP: RFM95W < \n\r" );
lukas_formanek 0:ea088908ad26 216 radio.SetChannel( RF_FREQUENCY );
lukas_formanek 0:ea088908ad26 217 #if USE_MODEM_LORA == 1
lukas_formanek 0:ea088908ad26 218
lukas_formanek 0:ea088908ad26 219 // debug_if( LORA_FHSS_ENABLED, "\n\r > LORA FHSS Mod < \n\n\r");
lukas_formanek 0:ea088908ad26 220 // debug_if( !LORA_FHSS_ENABLED, "\n\r > LORA Mod < \n\n\r");
lukas_formanek 2:0499e1d037a5 221 pc.printf("\n\r > LORA Mod < \n\n\r");
lukas_formanek 0:ea088908ad26 222 radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,
lukas_formanek 0:ea088908ad26 223 LORA_SPREADING_FACTOR, LORA_CODINGRATE,
lukas_formanek 0:ea088908ad26 224 LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,
lukas_formanek 0:ea088908ad26 225 LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
lukas_formanek 0:ea088908ad26 226 LORA_IQ_INVERSION_ON, 2000000 );
lukas_formanek 0:ea088908ad26 227
lukas_formanek 0:ea088908ad26 228 radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
lukas_formanek 0:ea088908ad26 229 LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
lukas_formanek 0:ea088908ad26 230 LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON, 0,
lukas_formanek 0:ea088908ad26 231 LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
lukas_formanek 0:ea088908ad26 232 LORA_IQ_INVERSION_ON, true );
lukas_formanek 0:ea088908ad26 233
lukas_formanek 0:ea088908ad26 234 #elif USE_MODEM_FSK == 1
lukas_formanek 0:ea088908ad26 235
lukas_formanek 2:0499e1d037a5 236 pc.printf("\n\r > FSK Mod < \n\n\r");
lukas_formanek 0:ea088908ad26 237 radio.SetTxConfig( MODEM_FSK, TX_OUTPUT_POWER, FSK_FDEV, 0,
lukas_formanek 0:ea088908ad26 238 FSK_DATARATE, 0,
lukas_formanek 0:ea088908ad26 239 FSK_PREAMBLE_LENGTH, FSK_FIX_LENGTH_PAYLOAD_ON,
lukas_formanek 0:ea088908ad26 240 FSK_CRC_ENABLED, 0, 0, 0, 2000000 );
lukas_formanek 0:ea088908ad26 241
lukas_formanek 0:ea088908ad26 242 radio.SetRxConfig( MODEM_FSK, FSK_BANDWIDTH, FSK_DATARATE,
lukas_formanek 0:ea088908ad26 243 0, FSK_AFC_BANDWIDTH, FSK_PREAMBLE_LENGTH,
lukas_formanek 0:ea088908ad26 244 0, FSK_FIX_LENGTH_PAYLOAD_ON, 0, FSK_CRC_ENABLED,
lukas_formanek 0:ea088908ad26 245 0, 0, false, true );
lukas_formanek 0:ea088908ad26 246
lukas_formanek 0:ea088908ad26 247 #else
lukas_formanek 0:ea088908ad26 248
lukas_formanek 0:ea088908ad26 249 #error "Nie je definovany typ modemu."
lukas_formanek 0:ea088908ad26 250
lukas_formanek 0:ea088908ad26 251 #endif
lukas_formanek 0:ea088908ad26 252 // Konfiguracia pre moznost max. vysielacieho vykonu
lukas_formanek 0:ea088908ad26 253 uint8_t paConfig;
lukas_formanek 0:ea088908ad26 254 paConfig = radio.Read( REG_PACONFIG );
lukas_formanek 0:ea088908ad26 255 paConfig |= RF_PACONFIG_PASELECT_PABOOST;
lukas_formanek 0:ea088908ad26 256 radio.Write( REG_PACONFIG, paConfig );
lukas_formanek 0:ea088908ad26 257
lukas_formanek 0:ea088908ad26 258 pc.printf("________Start aplikacie________\r\n" );
lukas_formanek 2:0499e1d037a5 259 timeOnAirSec = (radio.TimeOnAir( MODEM_LORA, 10)/1000.0); // time on air v ms
lukas_formanek 0:ea088908ad26 260 pc.printf( "\n\n\r------- Time on air : %f sec. -------\n\r", timeOnAirSec);
lukas_formanek 0:ea088908ad26 261 indicationLed = 1;
lukas_formanek 3:7a3ddda464bf 262 InitRandom();
lukas_formanek 3:7a3ddda464bf 263 messageNumber = rand();
lukas_formanek 0:ea088908ad26 264 radio.Rx(0);
lukas_formanek 0:ea088908ad26 265 };
lukas_formanek 0:ea088908ad26 266
lukas_formanek 3:7a3ddda464bf 267 void RFM95W::InitRandom()
lukas_formanek 3:7a3ddda464bf 268 {
lukas_formanek 3:7a3ddda464bf 269 uint32_t seed;
lukas_formanek 3:7a3ddda464bf 270 uint8_t loops = 3;
lukas_formanek 3:7a3ddda464bf 271 for (int i=0; i<(32*loops); i++) {
lukas_formanek 3:7a3ddda464bf 272 seed ^= noise.read_u16();
lukas_formanek 3:7a3ddda464bf 273 if (seed & 1<31) { // shift left and wrap.
lukas_formanek 3:7a3ddda464bf 274 seed <<= 1;
lukas_formanek 3:7a3ddda464bf 275 seed |= 1;
lukas_formanek 3:7a3ddda464bf 276 } else
lukas_formanek 3:7a3ddda464bf 277 seed <<= 1;
lukas_formanek 3:7a3ddda464bf 278 }
lukas_formanek 3:7a3ddda464bf 279 srand(seed);
lukas_formanek 3:7a3ddda464bf 280 };