main.cpp

00001 #include "mbed.h"
00002 #include "mDot.h"
00003 #include "MTSLog.h"
00004 #include <string>
00005 #include <vector>
00006 #include <algorithm>
00007 
00008 // these options must match the settings on your Conduit
00009 // uncomment the following lines and edit their values to match your configuration
00010 static std::string config_network_name = "<lora network id>";
00011 static std::string config_network_pass = "<lora network key>";
00012 static uint8_t config_frequency_sub_band = 1;
00013 
00014 int main() {
00015     int32_t ret;
00016     mDot* dot;
00017     std::vector<uint8_t> data;
00018     std::string data_str = "hello!";
00019     
00020     // get a mDot handle
00021     dot = mDot::getInstance();
00022     
00023     // print library version information
00024     logInfo("version: %s", dot->getId().c_str());
00025 
00026     //*******************************************
00027     // configuration
00028     //*******************************************
00029     // reset to default config so we know what state we're in
00030     dot->resetConfig();
00031     
00032     dot->setLogLevel(mts::MTSLog::INFO_LEVEL);
00033 
00034     // set up the mDot with our network information: frequency sub band, network name, and network password
00035     // these can all be saved in NVM so they don't need to be set every time - see mDot::saveConfig()
00036     
00037     // frequency sub band is only applicable in the 915 (US) frequency band
00038     // 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
00039     // if using a gateway that supports all 64 channels, use sub band 0 - the mDot will use all 64 channels
00040     
00041 //    logInfo("setting to public network");
00042 //    if ((ret = dot->setPublicNetwork(true)) != mDot::MDOT_OK) {
00043 //        logError("failed to set public network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
00044 //    }
00045 
00046     logInfo("setting frequency sub band");    
00047     if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK) {
00048         logError("failed to set frequency sub band %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
00049     }
00050     
00051     logInfo("setting network name");
00052     if ((ret = dot->setNetworkName(config_network_name)) != mDot::MDOT_OK) {
00053         logError("failed to set network name %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
00054     }
00055     
00056     logInfo("setting network password");
00057     if ((ret = dot->setNetworkPassphrase(config_network_pass)) != mDot::MDOT_OK) {
00058         logError("failed to set network password %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
00059     }
00060     
00061     // a higher spreading factor allows for longer range but lower throughput
00062     // in the 915 (US) frequency band, spreading factors 7 - 10 are available
00063     // in the 868 (EU) frequency band, spreading factors 7 - 12 are available
00064     logInfo("setting TX spreading factor");
00065     if ((ret = dot->setTxDataRate(mDot::SF_10)) != mDot::MDOT_OK) {
00066         logError("failed to set TX datarate %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
00067     }
00068     
00069     // request receive confirmation of packets from the gateway
00070     logInfo("enabling ACKs");
00071     if ((ret = dot->setAck(1)) != mDot::MDOT_OK) {
00072         logError("failed to enable ACKs %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
00073     }
00074     
00075     // save this configuration to the mDot's NVM
00076     logInfo("saving config");
00077     if (! dot->saveConfig()) {
00078         logError("failed to save configuration");
00079     }
00080     //*******************************************
00081     // end of configuration
00082     //*******************************************
00083 
00084     // attempt to join the network
00085     logInfo("joining network");
00086     while ((ret = dot->joinNetwork()) != mDot::MDOT_OK) {
00087         logError("failed to join network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
00088         // in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again
00089         osDelay(std::max((uint32_t)1000, (uint32_t)dot->getNextTxMs()));
00090     }
00091 
00092     // format data for sending to the gateway
00093     for (std::string::iterator it = data_str.begin(); it != data_str.end(); it++)
00094         data.push_back((uint8_t) *it);
00095 
00096     while (true) {
00097         // send the data to the gateway
00098         if ((ret = dot->send(data)) != mDot::MDOT_OK) {
00099             logError("failed to send", ret, mDot::getReturnCodeString(ret).c_str());
00100         } else {
00101             logInfo("successfully sent data to gateway");
00102         }
00103 
00104         // in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again
00105         osDelay(std::max((uint32_t)5000, (uint32_t)dot->getNextTxMs()));
00106     }
00107 
00108     return 0;
00109 }