bruno rovagnati / Mbed 2 deprecated mDot_LoRa_example_TTN_connect

a Hello world to connect to The Things Network

Dependencies:   libmDot mbed-rtos mbed

Fork of mDot_LoRa_Connect_Example by MultiTech

main.cpp@4:36e214ebfa56, 2015-09-30 (annotated)

Committer:
mfiore
Date:
Wed Sep 30 19:49:02 2015 +0000
Revision:
4:36e214ebfa56
Parent:
2:6e2c378339d9
Child:
6:8f7276e7d206
add comments clarifying configuration and behavior

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mfiore 0:09250cd371d2 1 #include "mbed.h"
mfiore 0:09250cd371d2 2 #include "mDot.h"
mfiore 4:36e214ebfa56 3 #include "MTSLog.h"
mfiore 0:09250cd371d2 4 #include <string>
mfiore 0:09250cd371d2 5 #include <vector>
mfiore 4:36e214ebfa56 6 #include <algorithm>
mfiore 0:09250cd371d2 7
mfiore 2:6e2c378339d9 8 // these options must match the settings on your Conduit
mfiore 2:6e2c378339d9 9 // uncomment the following lines and edit their values to match your configuration
mfiore 2:6e2c378339d9 10 //static std::string config_network_name = "<lora network id>";
mfiore 2:6e2c378339d9 11 //static std::string config_network_pass = "<lora network key>";
mfiore 2:6e2c378339d9 12 //static uint8_t config_frequency_sub_band = 1;
mfiore 0:09250cd371d2 13
mfiore 0:09250cd371d2 14 int main() {
mfiore 0:09250cd371d2 15 int32_t ret;
mfiore 0:09250cd371d2 16 mDot* dot;
mfiore 0:09250cd371d2 17 std::vector<uint8_t> data;
mfiore 4:36e214ebfa56 18 std::string data_str = "hello!";
mfiore 2:6e2c378339d9 19
mfiore 0:09250cd371d2 20 // get a mDot handle
mfiore 0:09250cd371d2 21 dot = mDot::getInstance();
mfiore 2:6e2c378339d9 22
mfiore 2:6e2c378339d9 23 // print library version information
mfiore 2:6e2c378339d9 24 logInfo("version: %s", dot->getId().c_str());
mfiore 0:09250cd371d2 25
mfiore 2:6e2c378339d9 26 //*******************************************
mfiore 2:6e2c378339d9 27 // configuration
mfiore 2:6e2c378339d9 28 //*******************************************
mfiore 0:09250cd371d2 29 // reset to default config so we know what state we're in
mfiore 0:09250cd371d2 30 dot->resetConfig();
mfiore 0:09250cd371d2 31
mfiore 4:36e214ebfa56 32 dot->setLogLevel(mts::MTSLog::INFO_LEVEL);
mfiore 0:09250cd371d2 33
mfiore 2:6e2c378339d9 34 // set up the mDot with our network information: frequency sub band, network name, and network password
mfiore 2:6e2c378339d9 35 // these can all be saved in NVM so they don't need to be set every time - see mDot::saveConfig()
mfiore 4:36e214ebfa56 36
mfiore 4:36e214ebfa56 37 // frequency sub band is only applicable in the 915 (US) frequency band
mfiore 4:36e214ebfa56 38 // if using a MultiTech Conduit gateway, use the same sub band as your Conduit (1-8) - the mDot will use the 8 channels in that sub band
mfiore 4:36e214ebfa56 39 // if using a gateway that supports all 64 channels, use sub band 0 - the mDot will use all 64 channels
mfiore 2:6e2c378339d9 40 logInfo("setting frequency sub band");
mfiore 0:09250cd371d2 41 if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 42 logError("failed to set frequency sub band %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 2:6e2c378339d9 43 }
mfiore 4:36e214ebfa56 44
mfiore 2:6e2c378339d9 45 logInfo("setting network name");
mfiore 2:6e2c378339d9 46 if ((ret = dot->setNetworkName(config_network_name)) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 47 logError("failed to set network name %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 0:09250cd371d2 48 }
mfiore 4:36e214ebfa56 49
mfiore 2:6e2c378339d9 50 logInfo("setting network password");
mfiore 2:6e2c378339d9 51 if ((ret = dot->setNetworkPassphrase(config_network_pass)) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 52 logError("failed to set network password %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 0:09250cd371d2 53 }
mfiore 4:36e214ebfa56 54
mfiore 4:36e214ebfa56 55 // a higher spreading factor allows for longer range but lower throughput
mfiore 4:36e214ebfa56 56 // in the 915 (US) frequency band, spreading factors 7 - 10 are available
mfiore 4:36e214ebfa56 57 // in the 868 (EU) frequency band, spreading factors 7 - 12 are available
mfiore 4:36e214ebfa56 58 logInfo("setting TX spreading factor");
mfiore 4:36e214ebfa56 59 if ((ret = dot->setTxDataRate(mDot::SF_10)) != mDot::MDOT_OK) {
mfiore 4:36e214ebfa56 60 logError("failed to set TX datarate %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 4:36e214ebfa56 61 }
mfiore 4:36e214ebfa56 62
mfiore 4:36e214ebfa56 63 // request receive confirmation of packets from the gateway
mfiore 4:36e214ebfa56 64 logInfo("enabling ACKs");
mfiore 4:36e214ebfa56 65 if ((ret = dot->setAck(1)) != mDot::MDOT_OK) {
mfiore 4:36e214ebfa56 66 logError("failed to enable ACKs %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 4:36e214ebfa56 67 }
mfiore 4:36e214ebfa56 68
mfiore 4:36e214ebfa56 69 // save this configuration to the mDot's NVM
mfiore 2:6e2c378339d9 70 logInfo("saving config");
mfiore 2:6e2c378339d9 71 if (! dot->saveConfig()) {
mfiore 2:6e2c378339d9 72 logError("failed to save configuration");
mfiore 0:09250cd371d2 73 }
mfiore 2:6e2c378339d9 74 //*******************************************
mfiore 2:6e2c378339d9 75 // end of configuration
mfiore 2:6e2c378339d9 76 //*******************************************
mfiore 0:09250cd371d2 77
mfiore 0:09250cd371d2 78 // attempt to join the network
mfiore 2:6e2c378339d9 79 logInfo("joining network");
mfiore 0:09250cd371d2 80 while ((ret = dot->joinNetwork()) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 81 logError("failed to join network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 4:36e214ebfa56 82 // in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again
mfiore 4:36e214ebfa56 83 osDelay(std::max((uint32_t)1000, (uint32_t)dot->getNextTxMs()));
mfiore 0:09250cd371d2 84 }
mfiore 0:09250cd371d2 85
mfiore 0:09250cd371d2 86 // format data for sending to the gateway
mfiore 0:09250cd371d2 87 for (std::string::iterator it = data_str.begin(); it != data_str.end(); it++)
mfiore 0:09250cd371d2 88 data.push_back((uint8_t) *it);
mfiore 0:09250cd371d2 89
mfiore 0:09250cd371d2 90 while (true) {
mfiore 4:36e214ebfa56 91 // send the data to the gateway
mfiore 0:09250cd371d2 92 if ((ret = dot->send(data)) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 93 logError("failed to send", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 0:09250cd371d2 94 } else {
mfiore 2:6e2c378339d9 95 logInfo("successfully sent data to gateway");
mfiore 0:09250cd371d2 96 }
mfiore 0:09250cd371d2 97
mfiore 4:36e214ebfa56 98 // in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again
mfiore 4:36e214ebfa56 99 osDelay(std::max((uint32_t)5000, (uint32_t)dot->getNextTxMs()));
mfiore 0:09250cd371d2 100 }
mfiore 0:09250cd371d2 101
mfiore 0:09250cd371d2 102 return 0;
mfiore 0:09250cd371d2 103 }