Harry Chen / Mbed OS Dot-Examples

fp

Dependencies:   libmDot-mbed5 ISL29011

examples/src/peer_to_peer_example.cpp@25:56f7775c702f, 2018-03-14 (annotated)

Committer:
Evan Hosseini
Date:
Wed Mar 14 14:38:08 2018 -0500
Revision:
25:56f7775c702f
Parent:
22:d9bc10bbc433
Child:
30:2f5ae37e6c47
Updates for the dot 3.1 release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Mike Fiore 11:d2e31743433a 1 #include "dot_util.h"
Mike Fiore 14:19fae4509473 2 #include "RadioEvent.h"
Mike Fiore 11:d2e31743433a 3
Mike Fiore 11:d2e31743433a 4 #if ACTIVE_EXAMPLE == PEER_TO_PEER_EXAMPLE
Mike Fiore 11:d2e31743433a 5
mfiore 17:d4f82e16de5f 6 /////////////////////////////////////////////////////////////////////////////
mfiore 17:d4f82e16de5f 7 // -------------------- DOT LIBRARY REQUIRED ------------------------------//
mfiore 17:d4f82e16de5f 8 // * Because these example programs can be used for both mDot and xDot //
mfiore 17:d4f82e16de5f 9 // devices, the LoRa stack is not included. The libmDot library should //
mfiore 17:d4f82e16de5f 10 // be imported if building for mDot devices. The libxDot library //
mfiore 17:d4f82e16de5f 11 // should be imported if building for xDot devices. //
mfiore 17:d4f82e16de5f 12 // * https://developer.mbed.org/teams/MultiTech/code/libmDot-dev-mbed5/ //
mfiore 17:d4f82e16de5f 13 // * https://developer.mbed.org/teams/MultiTech/code/libmDot-mbed5/ //
mfiore 17:d4f82e16de5f 14 // * https://developer.mbed.org/teams/MultiTech/code/libxDot-dev-mbed5/ //
mfiore 17:d4f82e16de5f 15 // * https://developer.mbed.org/teams/MultiTech/code/libxDot-mbed5/ //
mfiore 17:d4f82e16de5f 16 /////////////////////////////////////////////////////////////////////////////
mfiore 17:d4f82e16de5f 17
Mike Fiore 11:d2e31743433a 18 /////////////////////////////////////////////////////////////
Mike Fiore 11:d2e31743433a 19 // * these options must match between the two devices in //
Mike Fiore 11:d2e31743433a 20 // order for communication to be successful
Mike Fiore 11:d2e31743433a 21 /////////////////////////////////////////////////////////////
Mike Fiore 11:d2e31743433a 22 static uint8_t network_address[] = { 0x01, 0x02, 0x03, 0x04 };
Mike Fiore 11:d2e31743433a 23 static uint8_t network_session_key[] = { 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04 };
Mike Fiore 11:d2e31743433a 24 static uint8_t data_session_key[] = { 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04 };
Mike Fiore 11:d2e31743433a 25
Mike Fiore 11:d2e31743433a 26 mDot* dot = NULL;
Mike Fiore 21:09d05faf0e13 27 lora::ChannelPlan* plan = NULL;
Mike Fiore 11:d2e31743433a 28
Mike Fiore 11:d2e31743433a 29 Serial pc(USBTX, USBRX);
Mike Fiore 11:d2e31743433a 30
Mike Fiore 11:d2e31743433a 31 int main() {
Mike Fiore 14:19fae4509473 32 // Custom event handler for automatically displaying RX data
Mike Fiore 11:d2e31743433a 33 RadioEvent events;
Mike Fiore 11:d2e31743433a 34 uint32_t tx_frequency;
Mike Fiore 11:d2e31743433a 35 uint8_t tx_datarate;
Mike Fiore 11:d2e31743433a 36 uint8_t tx_power;
Mike Fiore 11:d2e31743433a 37 uint8_t frequency_band;
Mike Fiore 11:d2e31743433a 38
Mike Fiore 11:d2e31743433a 39 pc.baud(115200);
Mike Fiore 11:d2e31743433a 40
Mike Fiore 11:d2e31743433a 41 mts::MTSLog::setLogLevel(mts::MTSLog::TRACE_LEVEL);
Mike Fiore 11:d2e31743433a 42
Mike Fiore 21:09d05faf0e13 43 #if CHANNEL_PLAN == CP_US915
Mike Fiore 21:09d05faf0e13 44 plan = new lora::ChannelPlan_US915();
Mike Fiore 21:09d05faf0e13 45 #elif CHANNEL_PLAN == CP_AU915
Mike Fiore 21:09d05faf0e13 46 plan = new lora::ChannelPlan_AU915();
Mike Fiore 21:09d05faf0e13 47 #elif CHANNEL_PLAN == CP_EU868
Mike Fiore 21:09d05faf0e13 48 plan = new lora::ChannelPlan_EU868();
Mike Fiore 21:09d05faf0e13 49 #elif CHANNEL_PLAN == CP_KR920
Mike Fiore 21:09d05faf0e13 50 plan = new lora::ChannelPlan_KR920();
Mike Fiore 21:09d05faf0e13 51 #elif CHANNEL_PLAN == CP_AS923
Mike Fiore 21:09d05faf0e13 52 plan = new lora::ChannelPlan_AS923();
Mike Fiore 21:09d05faf0e13 53 #elif CHANNEL_PLAN == CP_AS923_JAPAN
Mike Fiore 21:09d05faf0e13 54 plan = new lora::ChannelPlan_AS923_Japan();
mfiore 22:d9bc10bbc433 55 #elif CHANNEL_PLAN == CP_IN865
mfiore 22:d9bc10bbc433 56 plan = new lora::ChannelPlan_IN865();
Mike Fiore 21:09d05faf0e13 57 #endif
Mike Fiore 21:09d05faf0e13 58 assert(plan);
Mike Fiore 21:09d05faf0e13 59
Mike Fiore 21:09d05faf0e13 60 dot = mDot::getInstance(plan);
Mike Fiore 21:09d05faf0e13 61 assert(dot);
Mike Fiore 11:d2e31743433a 62
Mike Fiore 16:a3832552dfe1 63 logInfo("mbed-os library version: %d", MBED_LIBRARY_VERSION);
Mike Fiore 16:a3832552dfe1 64
Mike Fiore 12:ec9768677cea 65 // start from a well-known state
Mike Fiore 12:ec9768677cea 66 logInfo("defaulting Dot configuration");
Mike Fiore 12:ec9768677cea 67 dot->resetConfig();
Mike Fiore 12:ec9768677cea 68
Mike Fiore 11:d2e31743433a 69 // make sure library logging is turned on
Mike Fiore 11:d2e31743433a 70 dot->setLogLevel(mts::MTSLog::INFO_LEVEL);
Mike Fiore 11:d2e31743433a 71
Mike Fiore 11:d2e31743433a 72 // attach the custom events handler
Mike Fiore 11:d2e31743433a 73 dot->setEvents(&events);
Mike Fiore 11:d2e31743433a 74
Mike Fiore 11:d2e31743433a 75 // update configuration if necessary
Mike Fiore 11:d2e31743433a 76 if (dot->getJoinMode() != mDot::PEER_TO_PEER) {
Mike Fiore 11:d2e31743433a 77 logInfo("changing network join mode to PEER_TO_PEER");
Mike Fiore 11:d2e31743433a 78 if (dot->setJoinMode(mDot::PEER_TO_PEER) != mDot::MDOT_OK) {
Mike Fiore 11:d2e31743433a 79 logError("failed to set network join mode to PEER_TO_PEER");
Mike Fiore 11:d2e31743433a 80 }
Mike Fiore 11:d2e31743433a 81 }
Mike Fiore 11:d2e31743433a 82 frequency_band = dot->getFrequencyBand();
Mike Fiore 11:d2e31743433a 83 switch (frequency_band) {
Mike Fiore 21:09d05faf0e13 84 case lora::ChannelPlan::EU868_OLD:
Mike Fiore 21:09d05faf0e13 85 case lora::ChannelPlan::EU868:
Mike Fiore 11:d2e31743433a 86 // 250kHz channels achieve higher throughput
Mike Fiore 21:09d05faf0e13 87 // DR_6 : SF7 @ 250kHz
Mike Fiore 21:09d05faf0e13 88 // DR_0 - DR_5 (125kHz channels) available but much slower
Mike Fiore 11:d2e31743433a 89 tx_frequency = 869850000;
Mike Fiore 21:09d05faf0e13 90 tx_datarate = lora::DR_6;
Mike Fiore 11:d2e31743433a 91 // the 869850000 frequency is 100% duty cycle if the total power is under 7 dBm - tx power 4 + antenna gain 3 = 7
Mike Fiore 11:d2e31743433a 92 tx_power = 4;
Mike Fiore 11:d2e31743433a 93 break;
Mike Fiore 21:09d05faf0e13 94
Mike Fiore 21:09d05faf0e13 95 case lora::ChannelPlan::US915_OLD:
Mike Fiore 21:09d05faf0e13 96 case lora::ChannelPlan::US915:
Mike Fiore 21:09d05faf0e13 97 case lora::ChannelPlan::AU915_OLD:
Mike Fiore 21:09d05faf0e13 98 case lora::ChannelPlan::AU915:
Mike Fiore 11:d2e31743433a 99 // 500kHz channels achieve highest throughput
Mike Fiore 21:09d05faf0e13 100 // DR_8 : SF12 @ 500kHz
Mike Fiore 21:09d05faf0e13 101 // DR_9 : SF11 @ 500kHz
Mike Fiore 21:09d05faf0e13 102 // DR_10 : SF10 @ 500kHz
Mike Fiore 21:09d05faf0e13 103 // DR_11 : SF9 @ 500kHz
Mike Fiore 21:09d05faf0e13 104 // DR_12 : SF8 @ 500kHz
Mike Fiore 21:09d05faf0e13 105 // DR_13 : SF7 @ 500kHz
Mike Fiore 21:09d05faf0e13 106 // DR_0 - DR_3 (125kHz channels) available but much slower
Mike Fiore 11:d2e31743433a 107 tx_frequency = 915500000;
Mike Fiore 21:09d05faf0e13 108 tx_datarate = lora::DR_13;
Mike Fiore 11:d2e31743433a 109 // 915 bands have no duty cycle restrictions, set tx power to max
Mike Fiore 11:d2e31743433a 110 tx_power = 20;
Mike Fiore 11:d2e31743433a 111 break;
Mike Fiore 21:09d05faf0e13 112
Mike Fiore 21:09d05faf0e13 113 case lora::ChannelPlan::AS923:
Mike Fiore 21:09d05faf0e13 114 case lora::ChannelPlan::AS923_JAPAN:
Mike Fiore 21:09d05faf0e13 115 // 250kHz channels achieve higher throughput
Mike Fiore 21:09d05faf0e13 116 // DR_6 : SF7 @ 250kHz
Mike Fiore 21:09d05faf0e13 117 // DR_0 - DR_5 (125kHz channels) available but much slower
Mike Fiore 21:09d05faf0e13 118 tx_frequency = 924800000;
Mike Fiore 21:09d05faf0e13 119 tx_datarate = lora::DR_6;
Mike Fiore 21:09d05faf0e13 120 tx_power = 16;
Mike Fiore 21:09d05faf0e13 121 break;
Mike Fiore 21:09d05faf0e13 122
Mike Fiore 21:09d05faf0e13 123 case lora::ChannelPlan::KR920:
Mike Fiore 21:09d05faf0e13 124 // DR_5 : SF7 @ 125kHz
Mike Fiore 21:09d05faf0e13 125 tx_frequency = 922700000;
Mike Fiore 21:09d05faf0e13 126 tx_datarate = lora::DR_5;
Mike Fiore 21:09d05faf0e13 127 tx_power = 14;
Mike Fiore 21:09d05faf0e13 128 break;
Mike Fiore 21:09d05faf0e13 129
Mike Fiore 21:09d05faf0e13 130 default:
Mike Fiore 21:09d05faf0e13 131 while (true) {
Mike Fiore 21:09d05faf0e13 132 logFatal("no known channel plan in use - extra configuration is needed!");
Mike Fiore 21:09d05faf0e13 133 wait(5);
Mike Fiore 21:09d05faf0e13 134 }
Mike Fiore 21:09d05faf0e13 135 break;
Mike Fiore 11:d2e31743433a 136 }
Mike Fiore 11:d2e31743433a 137 // in PEER_TO_PEER mode there is no join request/response transaction
Mike Fiore 11:d2e31743433a 138 // as long as both Dots are configured correctly, they should be able to communicate
Mike Fiore 11:d2e31743433a 139 update_peer_to_peer_config(network_address, network_session_key, data_session_key, tx_frequency, tx_datarate, tx_power);
Mike Fiore 11:d2e31743433a 140
Mike Fiore 11:d2e31743433a 141 // save changes to configuration
Mike Fiore 11:d2e31743433a 142 logInfo("saving configuration");
Mike Fiore 11:d2e31743433a 143 if (!dot->saveConfig()) {
Mike Fiore 11:d2e31743433a 144 logError("failed to save configuration");
Mike Fiore 11:d2e31743433a 145 }
Mike Fiore 11:d2e31743433a 146
Mike Fiore 11:d2e31743433a 147 // display configuration
Mike Fiore 11:d2e31743433a 148 display_config();
Mike Fiore 11:d2e31743433a 149
Evan Hosseini 25:56f7775c702f 150 uint8_t counter = 0;
Mike Fiore 11:d2e31743433a 151 while (true) {
Mike Fiore 11:d2e31743433a 152 std::vector<uint8_t> tx_data;
Mike Fiore 11:d2e31743433a 153
Mike Fiore 11:d2e31743433a 154 // join network if not joined
Mike Fiore 11:d2e31743433a 155 if (!dot->getNetworkJoinStatus()) {
Mike Fiore 11:d2e31743433a 156 join_network();
Mike Fiore 11:d2e31743433a 157 }
Mike Fiore 11:d2e31743433a 158
Evan Hosseini 25:56f7775c702f 159 tx_data.push_back(++counter);
Evan Hosseini 25:56f7775c702f 160 logInfo("sending uplink with data = %d", counter);
Mike Fiore 11:d2e31743433a 161 send_data(tx_data);
Mike Fiore 11:d2e31743433a 162
Mike Fiore 11:d2e31743433a 163 // the Dot can't sleep in PEER_TO_PEER mode
Mike Fiore 11:d2e31743433a 164 // it must be waiting for data from the other Dot
Mike Fiore 11:d2e31743433a 165 // send data every 5 seconds
Mike Fiore 11:d2e31743433a 166 logInfo("waiting for 5s");
Mike Fiore 11:d2e31743433a 167 wait(5);
Mike Fiore 11:d2e31743433a 168 }
Mike Fiore 11:d2e31743433a 169
Mike Fiore 11:d2e31743433a 170 return 0;
Mike Fiore 11:d2e31743433a 171 }
Mike Fiore 11:d2e31743433a 172
Mike Fiore 11:d2e31743433a 173 #endif