Wenkai Gong
The Modified Dot Library for SX1272
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ChannelPlan.h
00001 /** __ ___ ____ _ ______ __ ____ __ ____ 00002 * / |/ /_ __/ / /_(_)__/_ __/__ ____/ / / __/_ _____ / /____ __ _ ___ / _/__ ____ 00003 * / /|_/ / // / / __/ /___// / / -_) __/ _ \ _\ \/ // (_-</ __/ -_) ' \(_-< _/ // _ \/ __/ __ 00004 * /_/ /_/\_,_/_/\__/_/ /_/ \__/\__/_//_/ /___/\_, /___/\__/\__/_/_/_/___/ /___/_//_/\__/ /_/ 00005 * Copyright (C) 2015 by Multi-Tech Systems /___/ 00006 * 00007 * 00008 * @author Jason Reiss 00009 * @date 10-31-2015 00010 * @brief lora::ChannelPlan provides an interface for LoRaWAN channel schemes 00011 * 00012 * @details 00013 * 00014 */ 00015 00016 #ifndef __CHANNEL_STRATEGY_H__ 00017 #define __CHANNEL_STRATEGY_H__ 00018 00019 #include "mbed_events.h" 00020 00021 #include "Lora.h" 00022 #include "SxRadio.h" 00023 #include <vector> 00024 00025 namespace lora { 00026 00027 class ChannelPlan { 00028 public: 00029 00030 /** 00031 * Descriptions for channel plans & region information. 00032 * Bits 0-2 represent the plan type (fixed or dynamic) 00033 * 0b000 cannot be used as plans may line up with old definitions and cause much badness 00034 * 0b001 fixed channel plans 00035 * 0b010 dynamic channel plans 00036 * 0b011 - 0b111 RFU 00037 * Bits 3-7 represent the specific channel plan/region within the plan type 00038 */ 00039 enum PlanType { 00040 FIXED = 0x20, 00041 DYNAMIC = 0x40, 00042 }; 00043 00044 enum Plan { 00045 EU868_OLD = 0x00, 00046 US915_OLD = 0x01, 00047 AU915_OLD = 0x02, 00048 00049 FB_EU868 = 0x00, 00050 FB_US915 = 0x01, 00051 FB_AU915 = 0x02, 00052 00053 FB_868 = 0x00, 00054 FB_915 = 0x01, 00055 00056 US915 = FIXED | 0x00, 00057 AU915 = FIXED | 0x01, 00058 00059 EU868 = DYNAMIC | 0x00, 00060 IN865 = DYNAMIC | 0x01, 00061 AS923 = DYNAMIC | 0x02, 00062 KR920 = DYNAMIC | 0x03, 00063 AS923_JAPAN = DYNAMIC | 0x04, 00064 RU864 = DYNAMIC | 0x05, 00065 00066 NONE = 0xFF, 00067 }; 00068 00069 /** 00070 * ChannelPlan constructor 00071 * @param radio SxRadio object used to set Tx/Rx config 00072 * @param settings Settings object 00073 */ 00074 ChannelPlan(SxRadio* radio, Settings* settings); 00075 00076 /** 00077 * ChannelPlan destructor 00078 */ 00079 virtual ~ChannelPlan(); 00080 00081 /** 00082 * Checks that at least one channel exist for the data rate 00083 */ 00084 virtual uint8_t ValidateAdrDatarate(uint8_t status); 00085 00086 /** 00087 * Initialize channels, datarates and duty cycle bands according to current channel plan in settings 00088 */ 00089 virtual void Init() = 0; 00090 00091 /** 00092 * Set SxRadio object to be used to set Tx/Rx config 00093 */ 00094 virtual void SetRadio(SxRadio* radio); 00095 00096 /** 00097 * Set Settings object 00098 */ 00099 virtual void SetSettings(Settings* settings); 00100 00101 /** 00102 * Setter for the event queue 00103 */ 00104 virtual void SetEventQueue(EventQueue* queue); 00105 00106 /** 00107 * Get the next channel to use to transmit 00108 * @return LORA_OK if channel was found 00109 * @return LORA_NO_CHANS_ENABLED 00110 */ 00111 virtual uint8_t GetNextChannel() = 0; 00112 00113 /** 00114 * Set the number of channels in the plan 00115 */ 00116 virtual void SetNumberOfChannels(uint8_t channels, bool resize = true); 00117 00118 /** 00119 * Get the number of channels in the plan 00120 */ 00121 virtual uint8_t GetNumberOfChannels(); 00122 00123 /** 00124 * Check if channel is enabled 00125 * @return true if enabled 00126 */ 00127 virtual bool IsChannelEnabled(uint8_t channel); 00128 00129 /** 00130 * Set a 16 bit channel mask with offset 00131 * @param index of mask to set 0:0-15, 1:16-31 ... 00132 * @param mask 16 bit mask of enabled channels 00133 * @return true 00134 */ 00135 virtual bool SetChannelMask(uint8_t index, uint16_t mask); 00136 00137 /** 00138 * Get the channel mask of currently enabled channels 00139 * @return vector containing channel bit masks 00140 */ 00141 virtual std::vector<uint16_t> GetChannelMask(); 00142 00143 /** 00144 * Add a channel to the ChannelPlan 00145 * @param index of channel, use -1 to add to end 00146 * @param channel settings to add 00147 */ 00148 virtual uint8_t AddChannel(int8_t index, Channel channel) = 0; 00149 00150 /** 00151 * Get channel at index 00152 * @return Channel 00153 */ 00154 virtual Channel GetChannel(int8_t index) = 0; 00155 00156 /** 00157 * Add a downlink channel to the ChannelPlan 00158 * Set to 0 to use the default uplink channel frequency 00159 * @param index of channel, use -1 to add to end 00160 * @param channel settings to add 00161 */ 00162 virtual uint8_t AddDownlinkChannel(int8_t index, Channel channel); 00163 00164 /** 00165 * Get channel at index 00166 * @return Channel 00167 */ 00168 virtual Channel GetDownlinkChannel(uint8_t index); 00169 00170 /** 00171 * Set number of datarates in ChannelPlan 00172 * @param datarates 00173 */ 00174 virtual void SetNumberOfDatarates(uint8_t datarates); 00175 00176 /** 00177 * Add a datarate to the ChannelPlan 00178 * @param index of datarate, use -1 to add to end 00179 * @param datarate settings to add 00180 */ 00181 virtual uint8_t AddDatarate(int8_t index, Datarate datarate); 00182 00183 /** 00184 * Get datarate at index 00185 * @return Datarate 00186 */ 00187 virtual Datarate GetDatarate(int8_t index); 00188 00189 /** 00190 * Get max payload size for current datarate 00191 * @return size in bytes 00192 */ 00193 virtual uint8_t GetMaxPayloadSize(); 00194 00195 /** 00196 * Get rx window settings for requested window 00197 * RX_1, RX_2, RX_BEACON, RX_SLOT 00198 * @param window 00199 * @return RxWindow 00200 */ 00201 virtual RxWindow GetRxWindow(uint8_t window) = 0; 00202 00203 /** 00204 * Get current channel to use for transmitting 00205 * @param channel index of channel 00206 * @return LORA_OK 00207 */ 00208 virtual uint8_t SetTxChannel(uint8_t channel); 00209 00210 /** 00211 * Get datarate to use on the join request 00212 * @return datarate index 00213 */ 00214 virtual uint8_t GetJoinDatarate() = 0; 00215 00216 /** 00217 * Calculate the next time a join request is possible 00218 * @param size of join frame 00219 * @returns LORA_OK 00220 */ 00221 virtual uint8_t CalculateJoinBackoff(uint8_t size) = 0; 00222 00223 /** 00224 * Get the current datarate 00225 * @return Datarate 00226 */ 00227 virtual Datarate GetTxDatarate(); 00228 00229 /** 00230 * Set the current datarate 00231 * @param index of datarate 00232 * @return LORA_OK 00233 */ 00234 virtual uint8_t SetTxDatarate(uint8_t index); 00235 00236 /** 00237 * Set the datarate offset used for first receive window 00238 * @param offset 00239 * @return LORA_OK 00240 */ 00241 virtual uint8_t SetRx1Offset(uint8_t offset); 00242 00243 /** 00244 * Set the frequency for second receive window 00245 * @param freq 00246 * @return LORA_OK 00247 */ 00248 virtual uint8_t SetRx2Frequency(uint32_t freq); 00249 00250 /** 00251 * Set the datarate index used for second receive window 00252 * @param index 00253 * @return LORA_OK 00254 */ 00255 virtual uint8_t SetRx2DatarateIndex(uint8_t index); 00256 00257 /** 00258 * Get next channel and set the SxRadio tx config with current settings 00259 * @return LORA_OK 00260 */ 00261 virtual uint8_t SetTxConfig() = 0; 00262 00263 /** 00264 * Set the SxRadio rx config provided window 00265 * @param window to be opened 00266 * @param continuous keep window open 00267 * @param wnd_growth factor to increase the rx window by 00268 * @param pad_ms time in milliseconds to add to computed window size 00269 * @return LORA_OK 00270 */ 00271 virtual uint8_t SetRxConfig(uint8_t window, 00272 bool continuous, 00273 uint16_t wnd_growth = 1, 00274 uint16_t pad_ms = 0) = 0; 00275 00276 /** 00277 * Set frequency sub band if supported by plan 00278 * @param sub_band 00279 * @return LORA_OK 00280 */ 00281 virtual uint8_t SetFrequencySubBand(uint8_t group) = 0; 00282 00283 /** 00284 * Get frequency sub band if supported by plan 00285 * @return sub band 0-8 or 0 if not supported 00286 */ 00287 virtual uint8_t GetFrequencySubBand(); 00288 00289 /** 00290 * Reset the ack counter used to lower datarate if ACK's are missed 00291 */ 00292 virtual void ResetAckCounter(); 00293 00294 /** 00295 * Callback for radio to request channel change when frequency hopping 00296 * @param currentChannel 00297 */ 00298 virtual void FhssChangeChannel(uint8_t currentChannel); 00299 00300 /** 00301 * Callback for ACK timeout event 00302 * @return LORA_OK 00303 */ 00304 virtual uint8_t HandleAckTimeout(); 00305 00306 /** 00307 * Callback for Join Accept packet to load optional channels 00308 * @return LORA_OK 00309 */ 00310 virtual uint8_t HandleJoinAccept(const uint8_t* buffer, uint8_t size) = 0; 00311 00312 /** 00313 * Callback to for rx parameter setup ServerCommand 00314 * @param payload packet data 00315 * @param index of start of command buffer 00316 * @param size number of bytes in command buffer 00317 * @param[out] status to be returned in MoteCommand answer 00318 * @return LORA_OK 00319 */ 00320 virtual uint8_t HandleRxParamSetup(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) = 0; 00321 00322 /** 00323 * Callback to for new channel ServerCommand 00324 * @param payload packet data 00325 * @param index of start of command buffer 00326 * @param size number of bytes in command buffer 00327 * @param[out] status to be returned in MoteCommand answer 00328 * @return LORA_OK 00329 */ 00330 virtual uint8_t HandleNewChannel(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) = 0; 00331 00332 /** 00333 * Callback to for downlink channel request ServerCommand 00334 * @param payload packet data 00335 * @param index of start of command buffer 00336 * @param size number of bytes in command buffer 00337 * @param[out] status to be returned in MoteCommand answer 00338 * @return LORA_OK 00339 */ 00340 virtual uint8_t HandleDownlinkChannelReq(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status); 00341 00342 /** 00343 * Callback to for ping slot channel request ServerCommand 00344 * @param payload packet data 00345 * @param index of start of command buffer 00346 * @param size number of bytes in command buffer 00347 * @param[out] status to be returned in MoteCommand answer 00348 * @return LORA_OK 00349 */ 00350 virtual uint8_t HandlePingSlotChannelReq(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) = 0; 00351 00352 /** 00353 * Callback to for beacon frequency request ServerCommand 00354 * @param payload packet data 00355 * @param index of start of command buffer 00356 * @param size number of bytes in command buffer 00357 * @param[out] status to be returned in MoteCommand answer 00358 * @return LORA_OK 00359 */ 00360 virtual uint8_t HandleBeaconFrequencyReq(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) = 0; 00361 00362 /** 00363 * Callback to for adaptive datarate ServerCommand 00364 * @param payload packet data 00365 * @param index of start of command buffer 00366 * @param size number of bytes in command buffer 00367 * @param[out] status to be returned in MoteCommand answer 00368 * @return LORA_OK 00369 */ 00370 virtual uint8_t HandleAdrCommand(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) = 0; 00371 00372 /** 00373 * Validate the configuration after multiple ADR commands have been applied 00374 * @return status to be returned in MoteCommand answer 00375 */ 00376 virtual uint8_t ValidateAdrConfiguration() = 0; 00377 00378 /** 00379 * Check that Rf Frequency is within channel plan range 00380 * @param freq frequency in Hz 00381 * @return true if valid frequency 00382 */ 00383 virtual bool CheckRfFrequency(uint32_t freq); 00384 00385 /** 00386 * Flag for ADR 00387 * @return true if ADR is enable in settings 00388 */ 00389 virtual bool IsAdrEnabled(); 00390 00391 /** 00392 * Flag if ADR ACK should be sent in next packet 00393 * @return true when flag should be set 00394 */ 00395 virtual bool AdrAckReq(); 00396 00397 /** 00398 * Increment the ADR counter to track when ADR ACK request should be sent 00399 * @return current value 00400 */ 00401 virtual uint8_t IncAdrCounter(); 00402 00403 /** 00404 * Reset the ADR counter when valid downlink is received from network server 00405 */ 00406 virtual void ResetAdrCounter(); 00407 00408 /** 00409 * Get the time the radio must be off air to comply with regulations 00410 * Time to wait may be dependent on duty-cycle restrictions per channel 00411 * Or duty-cycle of join requests if OTAA is being attempted 00412 * @return ms of time to wait for next tx opportunity 00413 */ 00414 virtual uint32_t GetTimeOffAir() = 0; 00415 00416 /** 00417 * Get the channels in use by current channel plan 00418 * @return channel frequencies 00419 */ 00420 virtual std::vector<uint32_t> GetChannels() = 0; 00421 00422 /** 00423 * Get the downlink channels in use by current channel plan 00424 * @return channel frequencies 00425 */ 00426 virtual std::vector<uint32_t> GetDownlinkChannels(); 00427 00428 /** 00429 * Get the channel datarate ranges in use by current channel plan 00430 * @return channel datarate ranges 00431 */ 00432 virtual std::vector<uint8_t> GetChannelRanges() = 0; 00433 00434 /** 00435 * Set the time off air for the given duty band 00436 * @param band index 00437 * @param time off air in ms 00438 */ 00439 virtual void SetDutyBandTimeOff(uint8_t band, uint32_t timeoff); 00440 00441 /** 00442 * Get the time off air for the given duty band 00443 * @param band index 00444 * @return time off air in ms 00445 */ 00446 virtual uint32_t GetDutyBandTimeOff(uint8_t band); 00447 00448 /** 00449 * Get the number of duty bands in the current channel plan 00450 * @return number of bands 00451 */ 00452 virtual uint8_t GetNumDutyBands(); 00453 00454 /** 00455 * Get the duty band index for the given frequency 00456 * @param freq frequency in Hz 00457 * @return index of duty band 00458 */ 00459 virtual int8_t GetDutyBand(uint32_t freq); 00460 00461 /** 00462 * Add duty band 00463 * @param index of duty band or -1 to append 00464 * @param band DutyBand definition 00465 * @return LORA_OK 00466 */ 00467 virtual uint8_t AddDutyBand(int8_t index, DutyBand band); 00468 00469 /** 00470 * Update duty cycle with current settings 00471 */ 00472 void UpdateDutyCycle(uint8_t bytes); 00473 00474 /** 00475 * Update duty cycle with at given frequency and time on air 00476 * @param freq frequency 00477 * @param time_on_air_ms tx time on air 00478 */ 00479 virtual void UpdateDutyCycle(uint32_t freq, uint32_t time_on_air_ms); 00480 00481 /** 00482 * Get time on air with current settings 00483 * @param bytes number of bytes to be sent 00484 * @param cfg for setting up the radio before getting time on air 00485 */ 00486 virtual uint32_t GetTimeOnAir(uint8_t bytes, RadioCfg_t cfg = TX_RADIO_CFG); 00487 00488 /** 00489 * Reset the duty timers with the current time off air 00490 */ 00491 virtual void ResetDutyCycleTimer(); 00492 00493 /** 00494 * Print log message for given rx window 00495 * @param wnd 1 or 2 00496 */ 00497 virtual void LogRxWindow(uint8_t wnd) = 0; 00498 00499 /** 00500 * Indicator of P2P mode 00501 * @return true if enabled 00502 */ 00503 virtual bool P2PEnabled(); 00504 00505 /** 00506 * Ack timeout for P2P mode 00507 * @return timeout in ms 00508 */ 00509 virtual uint16_t P2PTimeout(); 00510 00511 /** 00512 * Ack backoff for P2P mode 00513 * @return backoff in ms 00514 */ 00515 virtual uint16_t P2PBackoff(); 00516 00517 /** 00518 * Enable the default channels of the channel plan 00519 */ 00520 virtual void EnableDefaultChannels() = 0; 00521 00522 /** 00523 * Callback for radio thread to signal 00524 */ 00525 virtual void MacEvent(); 00526 00527 /** 00528 * Called when MAC layer doesn't know about a command. 00529 * Use to add custom or new mac command handling 00530 * @return LORA_OK 00531 */ 00532 virtual uint8_t HandleMacCommand(uint8_t* payload, uint8_t& index); 00533 00534 virtual void DecrementDatarate(); 00535 virtual void IncrementDatarate(); 00536 00537 virtual std::string GetPlanName(); 00538 virtual uint8_t GetPlan(); 00539 virtual bool IsPlanFixed(); 00540 virtual bool IsPlanDynamic(); 00541 static bool IsPlanFixed(uint8_t plan); 00542 static bool IsPlanDynamic(uint8_t plan); 00543 virtual uint32_t GetMinFrequency(); 00544 virtual uint32_t GetMaxFrequency(); 00545 00546 virtual uint8_t GetMinDatarate(); 00547 virtual uint8_t GetMaxDatarate(); 00548 virtual uint8_t GetMinDatarateOffset(); 00549 virtual uint8_t GetMaxDatarateOffset(); 00550 00551 virtual uint8_t GetMinRx2Datarate(); 00552 virtual uint8_t GetMaxRx2Datarate(); 00553 virtual uint8_t GetMaxTxPower(); 00554 virtual uint8_t GetMinTxPower(); 00555 00556 virtual uint16_t GetLBT_TimeUs(); 00557 virtual void SetLBT_TimeUs(uint16_t us); 00558 00559 virtual int8_t GetLBT_Threshold(); 00560 virtual void SetLBT_Threshold(int8_t rssi); 00561 00562 /** 00563 * Set LBT time and threshold to defaults 00564 */ 00565 virtual void DefaultLBT(); 00566 00567 virtual bool ListenBeforeTalk(); 00568 00569 /** 00570 * use to clear downlink channels on join 00571 */ 00572 virtual void ClearChannels(); 00573 00574 /** 00575 * Check if this packet is a beacon and if so extract parameters needed 00576 * @param payload of potential beacon 00577 * @param size of the packet 00578 * @param [out] data extracted from the beacon if this packet was indeed a beacon 00579 * @return true if this packet is beacon, false if not 00580 */ 00581 virtual bool DecodeBeacon(const uint8_t* payload, 00582 size_t size, 00583 BeaconData_t& data) = 0; 00584 00585 /** 00586 * Update class B beacon and ping slot settings if frequency hopping enabled 00587 * @param time received in the last beacon 00588 * @param period of the beacon 00589 * @param devAddr of this end device 00590 */ 00591 virtual void FrequencyHop(uint32_t time, uint32_t period, uint32_t devAddr) { } 00592 00593 00594 /* 00595 * Get default number of channels for a plan 00596 */ 00597 virtual uint8_t GetNumDefaultChans(); 00598 protected: 00599 00600 SxRadio* GetRadio(); //!< Get pointer to the SxRadio object or assert if it is null 00601 Settings* GetSettings(); //!< Get pointer to the settings object or assert if it is null 00602 /** 00603 * 16 bit ITU-T CRC implementation 00604 */ 00605 uint16_t CRC16(const uint8_t* data, size_t size); 00606 00607 uint8_t _txChannel; //!< Current channel for transmit 00608 uint8_t _txFrequencySubBand; //!< Current frequency sub band for hybrid operation 00609 00610 std::vector<Datarate> _datarates; //!< List of datarates 00611 00612 std::vector<Channel> _channels; //!< List of channels for transmit 00613 std::vector<Channel> _dlChannels; //!< List of channels for receive if changed from default 00614 00615 std::vector<DutyBand> _dutyBands; //!< List of duty bands to limit radio time on air 00616 00617 uint8_t _maxTxPower; //!< Max Tx power for channel Plan 00618 uint8_t _minTxPower; 00619 00620 uint32_t _minFrequency; //!< Minimum Frequency 00621 uint32_t _maxFrequency; //!< Maximum Frequency 00622 00623 uint8_t _minDatarate; //!< Minimum datarate to accept in ADR request 00624 uint8_t _maxDatarate; //!< Maximum datarate to accept in ADR request 00625 00626 uint8_t _minRx2Datarate; //!< Minimum datarate to accept in for Rx2 00627 uint8_t _maxRx2Datarate; //!< Maximum datarate to accept in for Rx2 00628 uint8_t _minDatarateOffset; //!< Minimum datarate offset to accept 00629 uint8_t _maxDatarateOffset; //!< Maximum datarate offset to accept 00630 00631 uint32_t _freqUBase125k; //!< Start of 125K uplink channels 00632 uint32_t _freqUStep125k; //!< Step between 125K uplink channels 00633 uint32_t _freqUBase500k; //!< Start of 500K uplink channels 00634 uint32_t _freqUStep500k; //!< Step between 500K uplink channels 00635 uint32_t _freqDBase500k; //!< Start of 500K downlink channels 00636 uint32_t _freqDStep500k; //!< Step between 500K downlink channels 00637 00638 uint8_t _numChans; //!< Number of total channels in plan 00639 uint8_t _numChans125k; //!< Number of 125K channels in plan 00640 uint8_t _numChans500k; //!< Number of 500K channels in plan 00641 uint8_t _numDefaultChans; //!< Number of default channels in plan 00642 00643 uint16_t _LBT_TimeUs; //!< Sample time in us for LBT 00644 int8_t _LBT_Threshold; //!< Threshold in dBm for LBT 00645 00646 std::vector<uint16_t> _channelMask; //!< Bit mask for currently enabled channels 00647 00648 Timer _dutyCycleTimer; //!< Timer for tracking time-off-air 00649 int _txDutyEvtId; //!< Event ID for expiration of time-off-air 00650 00651 bool _txDutyCyclePending; //!< Flag for pending duty cycle event 00652 00653 void OnTxDutyCycleEvent(); //!< Callback for duty cycle event 00654 void OnTxDutyCycleEventBottom(); //!< Callback for duty cycle event 00655 00656 static const uint8_t* TX_POWERS; //!< List of available tx powers 00657 static const uint8_t* RADIO_POWERS; //!< List of available tx powers 00658 static const uint8_t* MAX_PAYLOAD_SIZE; //!< List of max payload sizes for each datarate 00659 static const uint8_t* MAX_PAYLOAD_SIZE_REPEATER; //!< List of repeater compatible max payload sizes for each datarate 00660 00661 uint8_t _plan; 00662 std::string _planName; 00663 00664 private: 00665 00666 SxRadio* _radio; //!< Injected SxRadio dependency 00667 Settings* _settings; //!< Current settings 00668 EventQueue* _evtQueue; //!< mbed Event Queue 00669 }; 00670 } 00671 00672 #endif
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