LoRaPHYIN865.cpp

00001 /**
00002  *  @file LoRaPHYIN865.cpp
00003  *
00004  *  @brief Implements LoRaPHY for Indian 865 MHz band
00005  *
00006  *  \code
00007  *   ______                              _
00008  *  / _____)             _              | |
00009  * ( (____  _____ ____ _| |_ _____  ____| |__
00010  *  \____ \| ___ |    (_   _) ___ |/ ___)  _ \
00011  *  _____) ) ____| | | || |_| ____( (___| | | |
00012  * (______/|_____)_|_|_| \__)_____)\____)_| |_|
00013  *   (C)2013 Semtech
00014  *  ___ _____ _   ___ _  _____ ___  ___  ___ ___
00015  * / __|_   _/_\ / __| |/ / __/ _ \| _ \/ __| __|
00016  * \__ \ | |/ _ \ (__| ' <| _| (_) |   / (__| _|
00017  * |___/ |_/_/ \_\___|_|\_\_| \___/|_|_\\___|___|
00018  * embedded.connectivity.solutions===============
00019  *
00020  * \endcode
00021  *
00022  *
00023  * License: Revised BSD License, see LICENSE.TXT file include in the project
00024  *
00025  * Maintainer: Miguel Luis ( Semtech ), Gregory Cristian ( Semtech ) and Daniel Jaeckle ( STACKFORCE )
00026  *
00027  * Copyright (c) 2017, Arm Limited and affiliates.
00028  * SPDX-License-Identifier: BSD-3-Clause
00029  *
00030  */
00031 
00032 #include "LoRaPHYIN865.h"
00033 #include "lora_phy_ds.h"
00034 
00035 
00036 /*!
00037  * Number of default channels
00038  */
00039 #define IN865_NUMB_DEFAULT_CHANNELS                 3
00040 
00041 /*!
00042  * Number of channels to apply for the CF list
00043  */
00044 #define IN865_NUMB_CHANNELS_CF_LIST                 5
00045 
00046 /*!
00047  * Minimal datarate that can be used by the node
00048  */
00049 #define IN865_TX_MIN_DATARATE                       DR_0
00050 
00051 /*!
00052  * Maximal datarate that can be used by the node
00053  */
00054 #define IN865_TX_MAX_DATARATE                       DR_7
00055 
00056 /*!
00057  * Minimal datarate that can be used by the node
00058  */
00059 #define IN865_RX_MIN_DATARATE                       DR_0
00060 
00061 /*!
00062  * Maximal datarate that can be used by the node
00063  */
00064 #define IN865_RX_MAX_DATARATE                       DR_7
00065 
00066 /*!
00067  * Default datarate used by the node
00068  */
00069 #define IN865_DEFAULT_DATARATE                      DR_0
00070 #define IN865_DEFAULT_MAX_DATARATE                  DR_5
00071 
00072 /*!
00073  * Minimal Rx1 receive datarate offset
00074  */
00075 #define IN865_MIN_RX1_DR_OFFSET                     0
00076 
00077 /*!
00078  * Maximal Rx1 receive datarate offset
00079  */
00080 #define IN865_MAX_RX1_DR_OFFSET                     7
00081 
00082 /*!
00083  * Default Rx1 receive datarate offset
00084  */
00085 #define IN865_DEFAULT_RX1_DR_OFFSET                 0
00086 
00087 /*!
00088  * Minimal Tx output power that can be used by the node
00089  */
00090 #define IN865_MIN_TX_POWER                          TX_POWER_10
00091 
00092 /*!
00093  * Maximal Tx output power that can be used by the node
00094  */
00095 #define IN865_MAX_TX_POWER                          TX_POWER_0
00096 
00097 /*!
00098  * Default Tx output power used by the node
00099  */
00100 #define IN865_DEFAULT_TX_POWER                      TX_POWER_0
00101 
00102 /*!
00103  * Default Max EIRP
00104  */
00105 #define IN865_DEFAULT_MAX_EIRP                      30.0f
00106 
00107 /*!
00108  * Default antenna gain
00109  */
00110 #define IN865_DEFAULT_ANTENNA_GAIN                  2.15f
00111 
00112 /*!
00113  * ADR Ack limit
00114  */
00115 #define IN865_ADR_ACK_LIMIT                         64
00116 
00117 /*!
00118  * ADR Ack delay
00119  */
00120 #define IN865_ADR_ACK_DELAY                         32
00121 
00122 /*!
00123  * Enabled or disabled the duty cycle
00124  */
00125 #define IN865_DUTY_CYCLE_ENABLED                    1
00126 
00127 /*!
00128  * Maximum RX window duration
00129  */
00130 #define IN865_MAX_RX_WINDOW                         3000
00131 
00132 /*!
00133  * Receive delay 1
00134  */
00135 #define IN865_RECEIVE_DELAY1                        1000
00136 
00137 /*!
00138  * Receive delay 2
00139  */
00140 #define IN865_RECEIVE_DELAY2                        2000
00141 
00142 /*!
00143  * Join accept delay 1
00144  */
00145 #define IN865_JOIN_ACCEPT_DELAY1                    5000
00146 
00147 /*!
00148  * Join accept delay 2
00149  */
00150 #define IN865_JOIN_ACCEPT_DELAY2                    6000
00151 
00152 /*!
00153  * Maximum frame counter gap
00154  */
00155 #define IN865_MAX_FCNT_GAP                          16384
00156 
00157 /*!
00158  * Ack timeout
00159  */
00160 #define IN865_ACKTIMEOUT                            2000
00161 
00162 /*!
00163  * Random ack timeout limits
00164  */
00165 #define IN865_ACK_TIMEOUT_RND                       1000
00166 
00167 #if ( IN865_DEFAULT_DATARATE > DR_5 )
00168 #error "A default DR higher than DR_5 may lead to connectivity loss."
00169 #endif
00170 
00171 /*!
00172  * Second reception window channel frequency definition.
00173  */
00174 #define IN865_RX_WND_2_FREQ                         866550000
00175 
00176 /*!
00177  * Second reception window channel datarate definition.
00178  */
00179 #define IN865_RX_WND_2_DR                           DR_2
00180 
00181 /*!
00182  * Band 0 definition
00183  * { DutyCycle, TxMaxPower, LastJoinTxDoneTime, LastTxDoneTime, TimeOff }
00184  */
00185 static const band_t  IN865_BAND0  = { 1 , IN865_MAX_TX_POWER, 0, 0, 0, 865000000, 867000000 }; //  100.0 %
00186 
00187 /*!
00188  * LoRaMac default channel 1
00189  * Channel = { Frequency [Hz], RX1 Frequency [Hz], { ( ( DrMax << 4 ) | DrMin ) }, Band }
00190  */
00191 static const channel_params_t  IN865_LC1  = { 865062500, 0, { ( ( DR_5 << 4 ) | DR_0 ) }, 0 };
00192 
00193 /*!
00194  * LoRaMac default channel 2
00195  * Channel = { Frequency [Hz], RX1 Frequency [Hz], { ( ( DrMax << 4 ) | DrMin ) }, Band }
00196  */
00197 static const channel_params_t  IN865_LC2  = { 865402500, 0, { ( ( DR_5 << 4 ) | DR_0 ) }, 0 };
00198 
00199 /*!
00200  * LoRaMac default channel 3
00201  * Channel = { Frequency [Hz], RX1 Frequency [Hz], { ( ( DrMax << 4 ) | DrMin ) }, Band }
00202  */
00203 static const channel_params_t  IN865_LC3  = { 865985000, 0, { ( ( DR_5 << 4 ) | DR_0 ) }, 0 };
00204 
00205 /*!
00206  * LoRaMac channels which are allowed for the join procedure
00207  */
00208 #define IN865_JOIN_CHANNELS                         ( uint16_t )( LC( 1 ) | LC( 2 ) | LC( 3 ) )
00209 
00210 /*!
00211  * Data rates table definition
00212  */
00213 static const uint8_t datarates_IN865 []  = { 12, 11, 10,  9,  8,  7,  7, 50 };
00214 
00215 /*!
00216  * Bandwidths table definition in Hz
00217  */
00218 static const uint32_t bandwidths_IN865 [] = { 125000, 125000, 125000, 125000, 125000, 125000, 250000, 0 };
00219 
00220 /*!
00221  * Maximum payload with respect to the datarate index. Cannot operate with repeater.
00222  */
00223 static const uint8_t max_payloads_IN865 [] = { 51, 51, 51, 115, 242, 242, 242, 242 };
00224 
00225 /*!
00226  * Maximum payload with respect to the datarate index. Can operate with repeater.
00227  */
00228 static const uint8_t max_payloads_with_repeater [] = { 51, 51, 51, 115, 222, 222, 222, 222 };
00229 
00230 /*!
00231  * Effective datarate offsets for receive window 1.
00232  */
00233 static const int8_t rx1_dr_offset_IN865 [] = { 0, 1, 2, 3, 4, 5, -1, -2 };
00234 
00235 LoRaPHYIN865::LoRaPHYIN865(LoRaWANTimeHandler &lora_time)
00236         : LoRaPHY(lora_time)
00237 {
00238     bands[0] = IN865_BAND0 ;
00239 
00240     // Default Channels are always enabled, rest will be added later
00241     channels[0] = IN865_LC1 ;
00242     channels[1] = IN865_LC2 ;
00243     channels[2] = IN865_LC3 ;
00244 
00245     // Initialize the channels default mask
00246     default_channel_mask[0] = LC(1) + LC(2) + LC(3);
00247     // Update the channels mask
00248     copy_channel_mask(channel_mask, default_channel_mask, 1);
00249 
00250     // set default channels
00251     phy_params.channels.channel_list = channels;
00252     phy_params.channels.channel_list_size = IN865_MAX_NB_CHANNELS;
00253     phy_params.channels.mask = channel_mask;
00254     phy_params.channels.default_mask = default_channel_mask;
00255     phy_params.channels.mask_size = IN865_CHANNEL_MASK_SIZE;
00256 
00257     // set bands for IN865 spectrum
00258     phy_params.bands.table = (void *) bands;
00259     phy_params.bands.size = IN865_MAX_NB_BANDS;
00260 
00261     // set bandwidths available in IN865 spectrum
00262     phy_params.bandwidths.table = (void *) bandwidths_IN865 ;
00263     phy_params.bandwidths.size = 8;
00264 
00265     // set data rates available in IN865 spectrum
00266     phy_params.datarates.table = (void *) datarates_IN865 ;
00267     phy_params.datarates.size = 8;
00268 
00269     // set payload sizes with respect to data rates
00270     phy_params.payloads.table = (void *) max_payloads_IN865 ;
00271     phy_params.payloads.size = 8;
00272     phy_params.payloads_with_repeater.table = (void *) max_payloads_with_repeater ;
00273     phy_params.payloads_with_repeater.size = 8;
00274 
00275     // dwell time setting
00276     phy_params.ul_dwell_time_setting = 0;
00277     phy_params.dl_dwell_time_setting = 0;
00278 
00279     // set initial and default parameters
00280     phy_params.duty_cycle_enabled = IN865_DUTY_CYCLE_ENABLED;
00281     phy_params.accept_tx_param_setup_req = false;
00282     phy_params.fsk_supported = true;
00283     phy_params.cflist_supported = true;
00284     phy_params.dl_channel_req_supported = true;
00285     phy_params.custom_channelplans_supported = true;
00286     phy_params.default_channel_cnt = IN865_NUMB_DEFAULT_CHANNELS;
00287     phy_params.max_channel_cnt = IN865_MAX_NB_CHANNELS;
00288     phy_params.cflist_channel_cnt = IN865_NUMB_CHANNELS_CF_LIST;
00289     phy_params.min_tx_datarate = IN865_TX_MIN_DATARATE;
00290     phy_params.max_tx_datarate = IN865_TX_MAX_DATARATE;
00291     phy_params.min_rx_datarate = IN865_RX_MIN_DATARATE;
00292     phy_params.max_rx_datarate = IN865_RX_MAX_DATARATE;
00293     phy_params.default_datarate = IN865_DEFAULT_DATARATE;
00294     phy_params.default_max_datarate = IN865_DEFAULT_MAX_DATARATE;
00295     phy_params.min_rx1_dr_offset = IN865_MIN_RX1_DR_OFFSET;
00296     phy_params.max_rx1_dr_offset = IN865_MAX_RX1_DR_OFFSET;
00297     phy_params.default_rx1_dr_offset = IN865_DEFAULT_RX1_DR_OFFSET;
00298     phy_params.min_tx_power = IN865_MIN_TX_POWER;
00299     phy_params.max_tx_power = IN865_MAX_TX_POWER;
00300     phy_params.default_tx_power = IN865_DEFAULT_TX_POWER;
00301     phy_params.default_max_eirp = IN865_DEFAULT_MAX_EIRP;
00302     phy_params.default_antenna_gain = IN865_DEFAULT_ANTENNA_GAIN;
00303     phy_params.adr_ack_limit = IN865_ADR_ACK_LIMIT;
00304     phy_params.adr_ack_delay = IN865_ADR_ACK_DELAY;
00305     phy_params.max_rx_window = IN865_MAX_RX_WINDOW;
00306     phy_params.recv_delay1 = IN865_RECEIVE_DELAY1;
00307     phy_params.recv_delay2 = IN865_RECEIVE_DELAY2;
00308     phy_params.join_channel_mask = IN865_JOIN_CHANNELS;
00309     phy_params.join_accept_delay1 = IN865_JOIN_ACCEPT_DELAY1;
00310     phy_params.join_accept_delay2 = IN865_JOIN_ACCEPT_DELAY2;
00311     phy_params.max_fcnt_gap = IN865_MAX_FCNT_GAP;
00312     phy_params.ack_timeout = IN865_ACKTIMEOUT;
00313     phy_params.ack_timeout_rnd = IN865_ACK_TIMEOUT_RND;
00314     phy_params.rx_window2_datarate = IN865_RX_WND_2_DR;
00315     phy_params.rx_window2_frequency = IN865_RX_WND_2_FREQ;
00316 }
00317 
00318 LoRaPHYIN865::~LoRaPHYIN865()
00319 {
00320 }
00321 
00322 uint8_t LoRaPHYIN865::apply_DR_offset(int8_t dr, int8_t dr_offset)
00323 {
00324     // Apply offset formula
00325     return MIN(DR_5, MAX(DR_0, dr - rx1_dr_offset_IN865 [dr_offset]));
00326 }