Thanh Nguyen
ver1
Diff: plans/ChannelPlan_US915.cpp
- Revision:
- 82:0f5a742a08cd
- Child:
- 84:29648b580369
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/plans/ChannelPlan_US915.cpp Mon Jun 19 16:03:40 2017 -0500
@@ -0,0 +1,986 @@
+/**********************************************************************
+* COPYRIGHT 2016 MULTI-TECH SYSTEMS, INC.
+*
+* ALL RIGHTS RESERVED BY AND FOR THE EXCLUSIVE BENEFIT OF
+* MULTI-TECH SYSTEMS, INC.
+*
+* MULTI-TECH SYSTEMS, INC. - CONFIDENTIAL AND PROPRIETARY
+* INFORMATION AND/OR TRADE SECRET.
+*
+* NOTICE: ALL CODE, PROGRAM, INFORMATION, SCRIPT, INSTRUCTION,
+* DATA, AND COMMENT HEREIN IS AND SHALL REMAIN THE CONFIDENTIAL
+* INFORMATION AND PROPERTY OF MULTI-TECH SYSTEMS, INC.
+* USE AND DISCLOSURE THEREOF, EXCEPT AS STRICTLY AUTHORIZED IN A
+* WRITTEN AGREEMENT SIGNED BY MULTI-TECH SYSTEMS, INC. IS PROHIBITED.
+*
+***********************************************************************/
+
+#include "ChannelPlan_US915.h"
+#include "limits.h"
+
+using namespace lora;
+
+const uint8_t ChannelPlan_US915::US915_TX_POWERS[] = { 30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10 };
+const uint8_t ChannelPlan_US915::US915_RADIO_POWERS[] = { 3, 3, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 18, 19, 19 };
+const uint8_t ChannelPlan_US915::US915_MAX_PAYLOAD_SIZE[] = { 11, 53, 126, 242, 242, 0, 0, 0, 53, 129, 242, 242, 242, 242, 0, 0 };
+const uint8_t ChannelPlan_US915::US915_MAX_PAYLOAD_SIZE_REPEATER[] = { 11, 53, 126, 222, 222, 0, 0, 33, 109, 222, 222, 222, 0, 0 };
+
+ChannelPlan_US915::ChannelPlan_US915()
+:
+ ChannelPlan(NULL, NULL)
+{
+
+}
+
+ChannelPlan_US915::ChannelPlan_US915(Settings* settings)
+:
+ ChannelPlan(NULL, settings)
+{
+
+}
+
+ChannelPlan_US915::ChannelPlan_US915(SxRadio* radio, Settings* settings)
+:
+ ChannelPlan(radio, settings)
+{
+
+}
+
+ChannelPlan_US915::~ChannelPlan_US915() {
+
+}
+
+void ChannelPlan_US915::Init() {
+ _plan = US915;
+ _planName = "US915";
+
+ _datarates.clear();
+ _channels.clear();
+ _dutyBands.clear();
+
+ DutyBand band;
+
+ band.Index = 0;
+ band.DutyCycle = 0;
+
+ Datarate dr;
+
+ _maxTxPower = 30;
+ _minTxPower = 0;
+
+ _minFrequency = US915_FREQ_MIN;
+ _maxFrequency = US915_FREQ_MAX;
+
+ TX_POWERS = US915_TX_POWERS;
+ RADIO_POWERS = US915_RADIO_POWERS;
+ MAX_PAYLOAD_SIZE = US915_MAX_PAYLOAD_SIZE;
+ MAX_PAYLOAD_SIZE_REPEATER = US915_MAX_PAYLOAD_SIZE_REPEATER;
+
+ band.FrequencyMin = US915_FREQ_MIN;
+ band.FrequencyMax = US915_FREQ_MAX;
+
+ _freqUBase125k = US915_125K_FREQ_BASE;
+ _freqUStep125k = US915_125K_FREQ_STEP;
+ _freqUBase500k = US915_500K_FREQ_BASE;
+ _freqUStep500k = US915_500K_FREQ_STEP;
+ _freqDBase500k = US915_500K_DBASE;
+ _freqDStep500k = US915_500K_DSTEP;
+ GetSettings()->Session.Rx2Frequency = US915_500K_DBASE;
+
+ _minDatarate = US915_MIN_DATARATE;
+ _maxDatarate = US915_MAX_DATARATE;
+ _minRx2Datarate = DR_8;
+ _maxRx2Datarate = DR_13;
+ _minDatarateOffset = US915_MIN_DATARATE_OFFSET;
+ _maxDatarateOffset = US915_MAX_DATARATE_OFFSET;
+
+ _numChans125k = US915_125K_NUM_CHANS;
+ _numChans500k = US915_500K_NUM_CHANS;
+
+ logInfo("Initialize channels...");
+
+ SetNumberOfChannels(US915_125K_NUM_CHANS + US915_500K_NUM_CHANS, false);
+
+ dr.SpreadingFactor = SF_10;
+
+ logInfo("Initialize datarates...");
+
+ // Add DR0-3
+ while (dr.SpreadingFactor >= SF_7) {
+ AddDatarate(-1, dr);
+ dr.SpreadingFactor--;
+ dr.Index++;
+ }
+
+ // Add DR4
+ dr.SpreadingFactor = SF_8;
+ dr.Bandwidth = BW_500;
+ AddDatarate(-1, dr);
+ dr.Index++;
+
+ // Skip DR5-7 RFU
+ dr.SpreadingFactor = SF_INVALID;
+ AddDatarate(-1, dr), dr.Index++;
+ AddDatarate(-1, dr), dr.Index++;
+ AddDatarate(-1, dr), dr.Index++;
+
+ band.PowerMax = 30;
+
+ band.TimeOffEnd = 0;
+
+ AddDutyBand(-1, band);
+
+ GetSettings()->Session.Rx2DatarateIndex = DR_8;
+
+ // Add DR8-13
+ dr.SpreadingFactor = SF_12;
+ while (dr.SpreadingFactor >= SF_7) {
+ AddDatarate(-1, dr);
+ dr.SpreadingFactor--;
+ dr.Index++;
+ }
+
+ // Skip DR14-15 RFU
+ dr.SpreadingFactor = SF_INVALID;
+ AddDatarate(-1, dr), AddDatarate(-1, dr);
+
+ GetSettings()->Session.TxDatarate = DR_0;
+ GetSettings()->Session.TxPower = GetSettings()->Network.TxPower;
+
+ SetFrequencySubBand(GetSettings()->Network.FrequencySubBand);
+
+}
+
+uint8_t ChannelPlan_US915::HandleJoinAccept(const uint8_t* buffer, uint8_t size) {
+
+ if (size > 17) {
+ // TODO: Handle future channel mask settings
+ }
+
+ return LORA_OK;
+}
+
+void ChannelPlan_US915::SetNumberOfChannels(uint8_t channels, bool resize) {
+ uint8_t newsize = ((channels - 1) / CHAN_MASK_SIZE) + 1;
+
+ if (resize) {
+ _channels.resize(channels);
+ }
+
+ _channelMask.resize(newsize, 0x0);
+ _numChans = channels;
+
+}
+
+bool ChannelPlan_US915::IsChannelEnabled(uint8_t channel) {
+ uint8_t index = channel / CHAN_MASK_SIZE;
+ uint8_t shift = channel % CHAN_MASK_SIZE;
+
+ assert(index < _channelMask.size() * CHAN_MASK_SIZE);
+
+ // cannot shift over 32 bits
+ assert(shift < 32);
+
+ // logDebug("index: %d shift %d cm: %04x bit: %04x enabled: %d", index, shift, _channelMask[index], (1 << shift), (_channelMask[index] & (1 << shift)) == (1 << shift));
+
+ return (_channelMask[index] & (1 << shift)) == (1 << shift);
+}
+
+uint8_t ChannelPlan_US915::GetMinDatarate() {
+ if (GetSettings()->Network.Mode == lora::PEER_TO_PEER)
+ return 8;
+ else
+ return _minDatarate;
+}
+
+uint8_t ChannelPlan_US915::GetMaxDatarate() {
+ if (GetSettings()->Network.Mode == lora::PEER_TO_PEER)
+ return 13;
+ else
+ return _maxDatarate;
+}
+
+uint8_t ChannelPlan_US915::SetRx1Offset(uint8_t offset) {
+ GetSettings()->Session.Rx1DatarateOffset = offset;
+ return LORA_OK;
+}
+
+uint8_t ChannelPlan_US915::SetRx2Frequency(uint32_t freq) {
+ GetSettings()->Session.Rx2Frequency = freq;
+ return LORA_OK;
+}
+
+uint8_t ChannelPlan_US915::SetRx2DatarateIndex(uint8_t index) {
+ GetSettings()->Session.Rx2DatarateIndex = index;
+ return LORA_OK;
+}
+
+uint8_t ChannelPlan_US915::SetTxConfig() {
+ logInfo("Configure radio for TX");
+
+ uint8_t band = GetDutyBand(GetChannel(_txChannel).Frequency);
+ Datarate txDr = GetDatarate(GetSettings()->Session.TxDatarate);
+ int8_t max_pwr = _dutyBands[band].PowerMax;
+ uint8_t chans_enabled = 0;
+
+ int8_t pwr = 0;
+
+ pwr = std::min < int8_t > (GetSettings()->Session.TxPower, max_pwr);
+
+ // spec states that if < 50 125kHz channels are enabled, power is limited to 21dB conducted
+ chans_enabled += CountBits(_channelMask[0]);
+ chans_enabled += CountBits(_channelMask[1]);
+ chans_enabled += CountBits(_channelMask[2]);
+ chans_enabled += CountBits(_channelMask[3]);
+ if (chans_enabled < 50 && pwr > 21) {
+ pwr = 21;
+ }
+
+ if (pwr + GetSettings()->Network.AntennaGain >= max_pwr + 6 && GetSettings()->Network.AntennaGain > 6) {
+ pwr -= (GetSettings()->Network.AntennaGain - 6);
+ }
+
+ for (int i = 20; i >= 0; i--) {
+ if (RADIO_POWERS[i] <= pwr) {
+ pwr = i;
+ break;
+ }
+ if (i == 0) {
+ pwr = i;
+ }
+ }
+
+ logDebug("Session pwr: %d ant: %d max: %d", GetSettings()->Session.TxPower, GetSettings()->Network.AntennaGain, max_pwr);
+ logDebug("Radio Power index: %d output: %d total: %d", pwr, RADIO_POWERS[pwr], RADIO_POWERS[pwr] + GetSettings()->Network.AntennaGain);
+
+ uint32_t bw = txDr.Bandwidth;
+ uint32_t sf = txDr.SpreadingFactor;
+ uint8_t cr = txDr.Coderate;
+ uint8_t pl = txDr.PreambleLength;
+ uint16_t fdev = 0;
+ bool crc = txDr.Crc;
+ bool iq = txDr.TxIQ;
+
+ if (GetSettings()->Network.DisableCRC == true)
+ crc = false;
+
+ SxRadio::RadioModems_t modem = SxRadio::MODEM_LORA;
+
+ if (sf == SF_FSK) {
+ modem = SxRadio::MODEM_FSK;
+ sf = 50e3;
+ fdev = 25e3;
+ bw = 0;
+ }
+
+ GetRadio()->SetTxConfig(modem, pwr, fdev, bw, sf, cr, pl, false, crc, false, 0, iq, 3e3);
+
+ logDebug("TX PWR: %u DR: %u SF: %u BW: %u CR: %u PL: %u CRC: %d IQ: %d", pwr, txDr.Index, sf, bw, cr, pl, crc, iq);
+
+ return LORA_OK;
+}
+
+uint8_t ChannelPlan_US915::SetRxConfig(uint8_t window, bool continuous) {
+
+ RxWindow rxw = GetRxWindow(window);
+ GetRadio()->SetChannel(rxw.Frequency);
+
+ Datarate rxDr = GetDatarate(rxw.DatarateIndex);
+ uint32_t bw = rxDr.Bandwidth;
+ uint32_t sf = rxDr.SpreadingFactor;
+ uint8_t cr = rxDr.Coderate;
+ uint8_t pl = rxDr.PreambleLength;
+ uint16_t sto = rxDr.SymbolTimeout();
+ uint32_t afc = 0;
+ bool crc = false; // downlink does not use CRC according to LORAWAN
+
+ if (GetSettings()->Network.DisableCRC == true)
+ crc = false;
+
+ Datarate txDr = GetDatarate(GetSettings()->Session.TxDatarate);
+ bool iq = txDr.RxIQ;
+
+ if (P2PEnabled()) {
+ iq = txDr.TxIQ;
+ }
+
+ SxRadio::RadioModems_t modem = SxRadio::MODEM_LORA;
+
+ if (sf == SF_FSK) {
+ modem = SxRadio::MODEM_FSK;
+ sf = 50e3;
+ cr = 0;
+ bw = 50e3;
+ afc = 83333;
+ iq = false;
+ crc = true; // FSK must use CRC
+ }
+
+ // Disable printf's to actually receive packets, printing to debug may mess up the timing
+ // logTrace("Configure radio for RX%d on freq: %lu", window, rxw.Frequency);
+ // logTrace("RX SF: %u BW: %u CR: %u PL: %u STO: %u CRC: %d IQ: %d", sf, bw, cr, pl, sto, crc, iq);
+
+ GetRadio()->SetRxConfig(modem, bw, sf, cr, afc, pl, sto, false, 0, crc, false, 0, iq, continuous);
+
+ return LORA_OK;
+}
+
+uint8_t ChannelPlan_US915::AddChannel(int8_t index, Channel channel) {
+ logTrace("Add Channel %d : %lu : %02x %d", index, channel.Frequency, channel.DrRange.Value, _channels.size());
+
+ assert(index < (int) _channels.size());
+
+ if (index >= 0) {
+ _channels[index] = channel;
+ } else {
+ _channels.push_back(channel);
+ }
+
+ return LORA_OK;
+}
+
+Channel ChannelPlan_US915::GetChannel(int8_t index) {
+ Channel chan;
+ memset(&chan, 0, sizeof(Channel));
+
+ if (_channels.size() > 0) {
+ chan = _channels[index];
+ } else {
+ if (index < 64) {
+ chan.Index = index;
+ chan.DrRange.Fields.Min = _minDatarate;
+ chan.DrRange.Fields.Max = _maxDatarate - 1;
+ chan.Frequency = _freqUBase125k + (_freqUStep125k * index);
+ } else if (index < 72) {
+ chan.Index = index;
+ chan.DrRange.Fields.Min = _maxDatarate;
+ chan.DrRange.Fields.Max = _maxDatarate;
+ chan.Frequency = _freqUBase500k + (_freqUStep500k * (index - 64));
+ }
+ }
+
+ return chan;
+}
+
+uint8_t ChannelPlan_US915::SetFrequencySubBand(uint8_t sub_band) {
+
+ _txFrequencySubBand = sub_band;
+
+ if (sub_band > 0) {
+ SetChannelMask(0, 0x0000);
+ SetChannelMask(1, 0x0000);
+ SetChannelMask(2, 0x0000);
+ SetChannelMask(3, 0x0000);
+ SetChannelMask(4, 0x0000);
+ SetChannelMask((sub_band - 1) / 2, (sub_band % 2) ? 0x00FF : 0xFF00);
+ SetChannelMask(4, 1 << (sub_band - 1));
+ } else {
+ SetChannelMask(0, 0xFFFF);
+ SetChannelMask(1, 0xFFFF);
+ SetChannelMask(2, 0xFFFF);
+ SetChannelMask(3, 0xFFFF);
+ SetChannelMask(4, 0x00FF);
+ }
+
+ return LORA_OK;
+}
+
+
+void ChannelPlan_US915::LogRxWindow(uint8_t wnd) {
+
+ RxWindow rxw = GetRxWindow(wnd);
+ Datarate rxDr = GetDatarate(rxw.DatarateIndex);
+ uint8_t bw = rxDr.Bandwidth;
+ uint8_t sf = rxDr.SpreadingFactor;
+ uint8_t cr = rxDr.Coderate;
+ uint8_t pl = rxDr.PreambleLength;
+ uint16_t sto = rxDr.SymbolTimeout();
+ bool crc = false; // downlink does not use CRC according to LORAWAN
+ bool iq = GetTxDatarate().RxIQ;
+
+ logTrace("RX%d on freq: %lu", wnd, rxw.Frequency);
+ logTrace("RX DR: %u SF: %u BW: %u CR: %u PL: %u STO: %u CRC: %d IQ: %d", rxDr.Index, sf, bw, cr, pl, sto, crc, iq);
+}
+
+RxWindow ChannelPlan_US915::GetRxWindow(uint8_t window) {
+ RxWindow rxw;
+ int index = 0;
+
+ if (P2PEnabled()) {
+ rxw.Frequency = GetSettings()->Network.TxFrequency;
+ index = GetSettings()->Session.TxDatarate;
+ } else {
+ if (window == 1) {
+ if (_txChannel < _numChans125k) {
+ if (GetSettings()->Network.Mode == PUBLIC) {
+ rxw.Frequency = _freqDBase500k + (_txChannel % 8) * _freqDStep500k;
+ } else {
+ rxw.Frequency = _freqDBase500k + (_txChannel / 8) * _freqDStep500k;
+ }
+ } else
+ rxw.Frequency = _freqDBase500k + (_txChannel - _numChans125k) * _freqDStep500k;
+
+ if (GetSettings()->Session.TxDatarate <= DR_6) {
+ index = GetSettings()->Session.TxDatarate + 10 - GetSettings()->Session.Rx1DatarateOffset;
+
+ if (index < DR_8)
+ index = DR_8;
+ if (index > DR_13)
+ index = DR_13;
+ } else if (GetSettings()->Session.TxDatarate >= DR_8) {
+ index = GetSettings()->Session.TxDatarate - GetSettings()->Session.Rx1DatarateOffset;
+ if (index < DR_8)
+ index = DR_8;
+ }
+ } else {
+ if (GetSettings()->Network.Mode == PUBLIC) {
+ rxw.Frequency = GetSettings()->Session.Rx2Frequency;
+ } else {
+ if (_txChannel < 64)
+ rxw.Frequency = _freqDBase500k + (_txChannel / 8) * _freqDStep500k;
+ else
+ rxw.Frequency = _freqDBase500k + (_txChannel % 8) * _freqDStep500k;
+ }
+ index = GetSettings()->Session.Rx2DatarateIndex;
+ }
+ }
+
+ rxw.DatarateIndex = index;
+
+ return rxw;
+}
+
+uint8_t ChannelPlan_US915::HandleRxParamSetup(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) {
+ status = 0x07;
+ int8_t datarate = 0;
+ int8_t drOffset = 0;
+ uint32_t freq = 0;
+
+ drOffset = payload[index++];
+ datarate = drOffset & 0x0F;
+ drOffset = (drOffset >> 4) & 0x07;
+
+ freq = payload[index++];
+ freq |= payload[index++] << 8;
+ freq |= payload[index++] << 16;
+ freq *= 100;
+
+ if (!CheckRfFrequency(freq)) {
+ logInfo("Freq KO");
+ status &= 0xFE; // Channel frequency KO
+ }
+
+ if (datarate < _minRx2Datarate || datarate > _maxRx2Datarate) {
+ logInfo("DR KO");
+ status &= 0xFD; // Datarate KO
+ }
+
+ if (drOffset < 0 || drOffset > _maxDatarateOffset) {
+ logInfo("DR Offset KO");
+ status &= 0xFB; // Rx1DrOffset range KO
+ }
+
+ if ((status & 0x07) == 0x07) {
+ logInfo("RxParamSetup accepted Rx2DR: %d Rx2Freq: %d Rx1Offset: %d", datarate, freq, drOffset);
+ SetRx2DatarateIndex(datarate);
+ SetRx2Frequency(freq);
+ SetRx1Offset(drOffset);
+ } else {
+ logInfo("RxParamSetup rejected Rx2DR: %d Rx2Freq: %d Rx1Offset: %d", datarate, freq, drOffset);
+ }
+
+ return LORA_OK;
+}
+
+uint8_t ChannelPlan_US915::HandleNewChannel(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) {
+
+ // Not Supported in US915
+ status = 0;
+ return LORA_OK;
+}
+
+uint8_t ChannelPlan_US915::HandlePingSlotChannelReq(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) {
+
+ lora::CopyFreqtoInt(payload + index, _beaconRxChannel.Frequency);
+ index += 3;
+
+ if (_beaconRxChannel.Frequency != 0) {
+ _beaconRxChannel.DrRange.Value = payload[index];
+ } else {
+ // TODO: set to default beacon rx channel
+ }
+
+ status = 0x03;
+ return LORA_OK;
+}
+
+uint8_t ChannelPlan_US915::HandleBeaconFrequencyReq(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) {
+
+ status = 0x03;
+ Channel chParam;
+
+ // Skip channel index
+ index++;
+
+ lora::CopyFreqtoInt(payload + index, chParam.Frequency);
+ index += 3;
+ chParam.DrRange.Value = payload[index++];
+
+ if (!GetRadio()->CheckRfFrequency(chParam.Frequency)) {
+ status &= 0xFE; // Channel frequency KO
+ }
+
+ if (chParam.DrRange.Fields.Min < chParam.DrRange.Fields.Max) {
+ status &= 0xFD; // Datarate range KO
+ } else if (chParam.DrRange.Fields.Min < _minDatarate || chParam.DrRange.Fields.Min > _maxDatarate) {
+ status &= 0xFD; // Datarate range KO
+ } else if (chParam.DrRange.Fields.Max < _minDatarate || chParam.DrRange.Fields.Max > _maxDatarate) {
+ status &= 0xFD; // Datarate range KO
+ }
+
+ if ((status & 0x03) == 0x03) {
+ _beaconChannel = chParam;
+ }
+
+ if (_beaconChannel.Frequency == 0) {
+ // TODO: Set to default
+ }
+
+ status = 0x01;
+
+ return LORA_OK;
+}
+
+
+uint8_t ChannelPlan_US915::HandleAdrCommand(const uint8_t* payload, uint8_t index, uint8_t size, uint8_t& status) {
+
+ uint8_t power = 0;
+ uint8_t datarate = 0;
+ uint16_t mask = 0;
+ uint8_t ctrl = 0;
+ uint8_t nbRep = 0;
+
+ status = 0x07;
+ datarate = payload[index++];
+ power = datarate & 0x0F;
+ datarate = (datarate >> 4) & 0x0F;
+
+ mask = payload[index++];
+ mask |= payload[index++] << 8;
+
+ nbRep = payload[index++];
+ ctrl = (nbRep >> 4) & 0x07;
+ nbRep &= 0x0F;
+
+ if (nbRep == 0) {
+ nbRep = 1;
+ }
+
+ if (datarate > _maxDatarate) {
+ status &= 0xFD; // Datarate KO
+ }
+ //
+ // Remark MaxTxPower = 0 and MinTxPower = 10
+ //
+ if (power < 0 || power > 10) {
+ status &= 0xFB; // TxPower KO
+ }
+
+ switch (ctrl) {
+ case 0:
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ SetChannelMask(ctrl, mask);
+ break;
+
+ case 6:
+ // enable all 125 kHz channels
+ SetChannelMask(0, 0xFFFF);
+ SetChannelMask(1, 0xFFFF);
+ SetChannelMask(2, 0xFFFF);
+ SetChannelMask(3, 0xFFFF);
+ SetChannelMask(4, mask);
+ break;
+
+ case 7:
+ // disable all 125 kHz channels
+ SetChannelMask(0, 0x0);
+ SetChannelMask(1, 0x0);
+ SetChannelMask(2, 0x0);
+ SetChannelMask(3, 0x0);
+ SetChannelMask(4, mask);
+ break;
+
+ default:
+ logWarning("rejecting RFU or unknown control value %d", ctrl);
+ status &= 0xFE; // ChannelMask KO
+ return LORA_ERROR;
+ }
+
+ if (GetSettings()->Network.ADREnabled) {
+ GetSettings()->Session.TxDatarate = datarate;
+ GetSettings()->Session.TxPower = TX_POWERS[power];
+ GetSettings()->Session.Redundancy = nbRep;
+ } else {
+ logDebug("ADR is disabled, DR and Power not changed.");
+ status &= 0xFB; // TxPower KO
+ status &= 0xFD; // Datarate KO
+ }
+
+ logDebug("ADR DR: %u PWR: %u Ctrl: %02x Mask: %04x NbRep: %u Stat: %02x", datarate, power, ctrl, mask, nbRep, status);
+
+ return LORA_OK;
+}
+
+uint8_t ChannelPlan_US915::ValidateAdrConfiguration() {
+ uint8_t status = 0x07;
+ uint8_t chans_enabled = 0;
+ uint8_t datarate = GetSettings()->Session.TxDatarate;
+ uint8_t power = GetSettings()->Session.TxPower;
+
+ if (!GetSettings()->Network.ADREnabled) {
+ logDebug("ADR disabled - no applied changes to validate");
+ return status;
+ }
+
+ if (datarate > _maxDatarate) {
+ logWarning("ADR Datarate KO - outside allowed range");
+ status &= 0xFD; // Datarate KO
+ }
+ if (power < _minTxPower || power > _maxTxPower) {
+ logWarning("ADR TX Power KO - outside allowed range");
+ status &= 0xFB; // TxPower KO
+ }
+
+ // at least 6 125kHz channels must be enabled
+ chans_enabled += CountBits(_channelMask[0]);
+ chans_enabled += CountBits(_channelMask[1]);
+ chans_enabled += CountBits(_channelMask[2]);
+ chans_enabled += CountBits(_channelMask[3]);
+ if (chans_enabled < 6) {
+ logWarning("ADR Channel Mask KO - at least 6 125kHz channels must be enabled");
+ status &= 0xFE; // ChannelMask KO
+ }
+
+ // if TXDR == 4 (SF8@500kHz) at least 1 500kHz channel must be enabled
+ if (datarate == DR_4 && (CountBits(_channelMask[4] & 0xFF) == 0)) {
+ logWarning("ADR Datarate KO - DR4 requires at least 1 500kHz channel enabled");
+ status &= 0xFD; // Datarate KO
+ }
+
+ return status;
+}
+
+uint32_t ChannelPlan_US915::GetTimeOffAir()
+{
+ if (GetSettings()->Test.DisableDutyCycle == lora::ON)
+ return 0;
+
+ uint32_t min = 0;
+ uint32_t now = _dutyCycleTimer.read_ms();
+
+ if (GetSettings()->Session.AggregatedTimeOffEnd > 0 && GetSettings()->Session.AggregatedTimeOffEnd > now) {
+ min = std::max < uint32_t > (min, GetSettings()->Session.AggregatedTimeOffEnd - now);
+ }
+
+ now = time(NULL);
+ uint32_t join_time = 0;
+
+ if (GetSettings()->Session.JoinFirstAttempt != 0 && now < GetSettings()->Session.JoinTimeOffEnd) {
+ join_time = (GetSettings()->Session.JoinTimeOffEnd - now) * 1000;
+ }
+
+ min = std::max < uint32_t > (join_time, min);
+
+ return min;
+}
+
+std::vector<uint32_t> lora::ChannelPlan_US915::GetChannels() {
+ std::vector < uint32_t > chans;
+
+ if (GetSettings()->Network.FrequencySubBand > 0) {
+ uint8_t chans_per_group = 8;
+ size_t start = (GetSettings()->Network.FrequencySubBand - 1) * chans_per_group;
+ for (int8_t i = start; i < int8_t(start + chans_per_group); i++) {
+ chans.push_back(GetChannel(i).Frequency);
+ }
+ chans.push_back(GetChannel(_numChans125k + (GetSettings()->Network.FrequencySubBand - 1)).Frequency);
+ chans.push_back(GetRxWindow(2).Frequency);
+ } else {
+ for (int8_t i = 0; i < _numChans; i++) {
+ chans.push_back(GetChannel(i).Frequency);
+ }
+ chans.push_back(GetRxWindow(2).Frequency);
+ }
+
+ return chans;
+}
+
+std::vector<uint8_t> lora::ChannelPlan_US915::GetChannelRanges() {
+ std::vector < uint8_t > ranges;
+
+ if (GetSettings()->Network.FrequencySubBand > 0) {
+ uint8_t chans_per_group = 8;
+ size_t start = (GetSettings()->Network.FrequencySubBand - 1) * chans_per_group;
+ for (int8_t i = start; i < int8_t(start + chans_per_group); i++) {
+ ranges.push_back(GetChannel(i).DrRange.Value);
+ }
+ ranges.push_back(GetChannel(_numChans125k + (GetSettings()->Network.FrequencySubBand - 1)).DrRange.Value);
+ ranges.push_back(GetRxWindow(2).DatarateIndex);
+ } else {
+ for (int8_t i = 0; i < _numChans; i++) {
+ ranges.push_back(GetChannel(i).DrRange.Value);
+ }
+ ranges.push_back(GetRxWindow(2).DatarateIndex);
+ }
+
+ ranges.push_back(GetRxWindow(2).DatarateIndex);
+
+ return ranges;
+
+}
+
+void lora::ChannelPlan_US915::EnableDefaultChannels() {
+ SetFrequencySubBand(GetFrequencySubBand());
+}
+
+uint8_t ChannelPlan_US915::GetNextChannel()
+{
+ if (GetSettings()->Session.AggregatedTimeOffEnd != 0) {
+ return LORA_AGGREGATED_DUTY_CYCLE;
+ }
+
+ if (P2PEnabled() || GetSettings()->Network.TxFrequency != 0) {
+ logDebug("Using frequency %d", GetSettings()->Network.TxFrequency);
+
+ if (GetSettings()->Test.DisableDutyCycle != lora::ON) {
+ int8_t band = GetDutyBand(GetSettings()->Network.TxFrequency);
+ logDebug("band: %d freq: %d", band, GetSettings()->Network.TxFrequency);
+ if (band != -1 && _dutyBands[band].TimeOffEnd != 0) {
+ return LORA_NO_CHANS_ENABLED;
+ }
+ }
+
+ GetRadio()->SetChannel(GetSettings()->Network.TxFrequency);
+ return LORA_OK;
+ }
+
+ uint8_t start = 0;
+ uint8_t maxChannels = _numChans125k;
+ uint8_t nbEnabledChannels = 0;
+ uint8_t *enabledChannels = new uint8_t[maxChannels];
+
+ if (GetTxDatarate().Bandwidth == BW_500) {
+ maxChannels = _numChans500k;
+ start = _numChans125k;
+ }
+
+// Search how many channels are enabled
+ DatarateRange range;
+ uint8_t dr_index = GetSettings()->Session.TxDatarate;
+ uint32_t now = _dutyCycleTimer.read_ms();
+
+ for (size_t i = 0; i < _dutyBands.size(); i++) {
+ if (_dutyBands[i].TimeOffEnd < now || GetSettings()->Test.DisableDutyCycle == lora::ON) {
+ _dutyBands[i].TimeOffEnd = 0;
+ }
+ }
+
+ for (uint8_t i = start; i < start + maxChannels; i++) {
+ range = GetChannel(i).DrRange;
+ // logDebug("chan: %d freq: %d range:%02x", i, GetChannel(i).Frequency, range.Value);
+
+ if (IsChannelEnabled(i) && (dr_index >= range.Fields.Min && dr_index <= range.Fields.Max)) {
+ int8_t band = GetDutyBand(GetChannel(i).Frequency);
+ // logDebug("band: %d freq: %d", band, _channels[i].Frequency);
+ if (band != -1 && _dutyBands[band].TimeOffEnd == 0) {
+ enabledChannels[nbEnabledChannels++] = i;
+ }
+ }
+ }
+
+ if (GetTxDatarate().Bandwidth == BW_500) {
+ _dutyBands[0].PowerMax = 26;
+ } else {
+ if (nbEnabledChannels < 50)
+ _dutyBands[0].PowerMax = 21;
+ else
+ _dutyBands[0].PowerMax = 30;
+ }
+
+ logTrace("Number of available channels: %d", nbEnabledChannels);
+
+ uint32_t freq = 0;
+ uint8_t sf = GetTxDatarate().SpreadingFactor;
+ uint8_t bw = GetTxDatarate().Bandwidth;
+ int16_t thres = DEFAULT_FREE_CHAN_RSSI_THRESHOLD;
+
+ if (nbEnabledChannels == 0) {
+ delete [] enabledChannels;
+ return LORA_NO_CHANS_ENABLED;
+ }
+
+ if (GetSettings()->Network.CADEnabled) {
+ // Search for free channel with ms timeout
+ int16_t timeout = 10000;
+ Timer tmr;
+ tmr.start();
+
+ for (uint8_t j = rand_r(0, nbEnabledChannels - 1); tmr.read_ms() < timeout; j++) {
+ freq = GetChannel(enabledChannels[j]).Frequency;
+
+ if (GetRadio()->IsChannelFree(SxRadio::MODEM_LORA, freq, sf, thres, bw)) {
+ _txChannel = enabledChannels[j];
+ break;
+ }
+ }
+ } else {
+ uint8_t j = rand_r(0, nbEnabledChannels - 1);
+ _txChannel = enabledChannels[j];
+ freq = GetChannel(_txChannel).Frequency;
+ }
+
+ assert(freq != 0);
+
+ logDebug("Using channel %d : %d", _txChannel, freq);
+ GetRadio()->SetChannel(freq);
+
+ delete [] enabledChannels;
+ return LORA_OK;
+}
+
+uint8_t lora::ChannelPlan_US915::GetJoinDatarate() {
+ uint8_t dr = GetSettings()->Session.TxDatarate;
+
+ if (GetSettings()->Test.DisableRandomJoinDatarate == lora::OFF) {
+ static bool altDatarate = false;
+
+ if (GetSettings()->Network.FrequencySubBand == 0) {
+ static uint16_t used_bands_125k = 0;
+ static uint16_t used_bands_500k = 0;
+ uint8_t frequency_sub_band = 0;
+
+ if (altDatarate) {
+ // 500k channel
+ if (CountBits(used_bands_500k) == 8) {
+ used_bands_500k = 0;
+ }
+ while ((frequency_sub_band = rand_r(1, 8)) && (used_bands_500k & (1 << (frequency_sub_band - 1))) != 0)
+ ;
+ used_bands_500k |= (1 << (frequency_sub_band - 1));
+ } else {
+ // 125k channel
+ if (CountBits(used_bands_125k) == 8) {
+ used_bands_125k = 0;
+ }
+ while ((frequency_sub_band = rand_r(1, 8)) && (used_bands_125k & (1 << (frequency_sub_band - 1))) != 0)
+ ;
+ used_bands_125k |= (1 << (frequency_sub_band - 1));
+ }
+
+ logWarning("JoinDatarate setting frequency sub band to %d 125k: %04x 500k: %04x", frequency_sub_band, used_bands_125k, used_bands_500k);
+ SetFrequencySubBand(frequency_sub_band);
+ }
+
+ if (altDatarate && CountBits(_channelMask[4] > 0)) {
+ dr = lora::DR_4;
+ } else {
+ dr = lora::DR_0;
+ }
+ altDatarate = !altDatarate;
+ }
+
+ return dr;
+}
+
+uint8_t lora::ChannelPlan_US915::CalculateJoinBackoff(uint8_t size) {
+
+ time_t now = time(NULL);
+ uint32_t time_on_max = 0;
+ static uint32_t time_off_max = 15;
+ uint32_t rand_time_off = 0;
+ static uint16_t join_cnt = 0;
+
+ // TODO: calc time-off-max based on RTC time from JoinFirstAttempt, time-off-max is lost over sleep
+
+ if ((time_t)GetSettings()->Session.JoinTimeOffEnd > now) {
+ return LORA_JOIN_BACKOFF;
+ }
+
+ uint32_t secs_since_first_attempt = (now - GetSettings()->Session.JoinFirstAttempt);
+ uint16_t hours_since_first_attempt = secs_since_first_attempt / (60 * 60);
+
+ join_cnt = (join_cnt+1) % 16;
+
+ if (GetSettings()->Session.JoinFirstAttempt == 0) {
+ /* 1 % duty-cycle for first hour
+ * 0.1 % next 10 hours
+ * 0.01 % upto 24 hours */
+ GetSettings()->Session.JoinFirstAttempt = now;
+ GetSettings()->Session.JoinTimeOnAir += GetTimeOnAir(size);
+ GetSettings()->Session.JoinTimeOffEnd = now + rand_r(GetSettings()->Network.JoinDelay + 2, GetSettings()->Network.JoinDelay + 3);
+ } else if (join_cnt == 0) {
+ if (hours_since_first_attempt < 1) {
+ time_on_max = 36000;
+ rand_time_off = rand_r(time_off_max - 1, time_off_max + 1);
+ // time off max 1 hour
+ time_off_max = std::min < uint32_t > (time_off_max * 2, 60 * 60);
+
+ if (GetSettings()->Session.JoinTimeOnAir < time_on_max) {
+ GetSettings()->Session.JoinTimeOnAir += GetTimeOnAir(size);
+ GetSettings()->Session.JoinTimeOffEnd = now + rand_time_off;
+ } else {
+ logWarning("Max time-on-air limit met for current join backoff period");
+ GetSettings()->Session.JoinTimeOffEnd = GetSettings()->Session.JoinFirstAttempt + 60 * 60;
+ }
+ } else if (hours_since_first_attempt < 11) {
+ if (GetSettings()->Session.JoinTimeOnAir < 36000) {
+ GetSettings()->Session.JoinTimeOnAir = 36000;
+ }
+ time_on_max = 72000;
+ rand_time_off = rand_r(time_off_max - 1, time_off_max + 1);
+ // time off max 1 hour
+ time_off_max = std::min < uint32_t > (time_off_max * 2, 60 * 60);
+
+ if (GetSettings()->Session.JoinTimeOnAir < time_on_max) {
+ GetSettings()->Session.JoinTimeOnAir += GetTimeOnAir(size);
+ GetSettings()->Session.JoinTimeOffEnd = now + rand_time_off;
+ } else {
+ logWarning("Max time-on-air limit met for current join backoff period");
+ GetSettings()->Session.JoinTimeOffEnd = GetSettings()->Session.JoinFirstAttempt + 11 * 60 * 60;
+ }
+ } else {
+ if (GetSettings()->Session.JoinTimeOnAir < 72000) {
+ GetSettings()->Session.JoinTimeOnAir = 72000;
+ }
+ uint32_t join_time = 2500;
+
+ // 16 join attempts is ~2754 ms, check if this is the third of the 24 hour period
+
+ time_on_max = 80700;
+ time_off_max = 1 * 60 * 60; // 1 hour
+ rand_time_off = rand_r(time_off_max - 1, time_off_max + 1);
+
+ if (GetSettings()->Session.JoinTimeOnAir < time_on_max - join_time) {
+ GetSettings()->Session.JoinTimeOnAir += GetTimeOnAir(size);
+ GetSettings()->Session.JoinTimeOffEnd = now + rand_time_off;
+ } else {
+ logWarning("Max time-on-air limit met for current join backoff period");
+ // Reset the join time on air and set end of restriction to the next 24 hour period
+ GetSettings()->Session.JoinTimeOnAir = 72000;
+ uint16_t days = (now - GetSettings()->Session.JoinFirstAttempt) / (24 * 60 * 60) + 1;
+ logWarning("days : %d", days);
+ GetSettings()->Session.JoinTimeOffEnd = GetSettings()->Session.JoinFirstAttempt + ((days * 24) + 11) * 60 * 60;
+ }
+ }
+
+ logWarning("JoinBackoff: %lu seconds Time On Air: %lu / %lu", GetSettings()->Session.JoinTimeOffEnd - now, GetSettings()->Session.JoinTimeOnAir, time_on_max);
+ } else {
+ GetSettings()->Session.JoinTimeOnAir += GetTimeOnAir(size);
+ GetSettings()->Session.JoinTimeOffEnd = now + rand_r(GetSettings()->Network.JoinDelay + 2, GetSettings()->Network.JoinDelay + 3);
+ }
+
+ return LORA_OK;
+}