Connecting to gateway, sending packets with a MultiTech mDot and entering deepsleep mode between transmissions.
Dependencies: libmDot mbed-rtos mbed
Fork of libmDot_sleep by
Diff: main.cpp
- Revision:
- 4:ac599fe6bc41
- Parent:
- 2:4f4f5307d9e4
diff -r f1587aed3d9a -r ac599fe6bc41 main.cpp --- a/main.cpp Thu Sep 10 18:24:37 2015 +0000 +++ b/main.cpp Wed Sep 30 20:06:52 2015 +0000 @@ -1,8 +1,9 @@ #include "mbed.h" #include "mDot.h" +#include "MTSLog.h" #include <string> #include <vector> -#include "MTSLog.h" +#include <algorithm> // these options must match the settings on your Conduit // uncomment the following lines and edit their values to match your configuration @@ -14,8 +15,8 @@ int32_t ret; mDot* dot; std::vector<uint8_t> data; - std::string data_str = "hello world!"; - + std::string data_str = "hello!"; + // get a mDot handle dot = mDot::getInstance(); @@ -28,22 +29,50 @@ // reset to default config so we know what state we're in dot->resetConfig(); - dot->setLogLevel(mts::MTSLog::TRACE_LEVEL); + dot->setLogLevel(mts::MTSLog::INFO_LEVEL); // set up the mDot with our network information: frequency sub band, network name, and network password // these can all be saved in NVM so they don't need to be set every time - see mDot::saveConfig() + + // frequency sub band is only applicable in the 915 (US) frequency band + // 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 + // if using a gateway that supports all 64 channels, use sub band 0 - the mDot will use all 64 channels logInfo("setting frequency sub band"); if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK) { logError("failed to set frequency sub band %d:%s", ret, mDot::getReturnCodeString(ret).c_str()); } + logInfo("setting network name"); if ((ret = dot->setNetworkName(config_network_name)) != mDot::MDOT_OK) { logError("failed to set network name %d:%s", ret, mDot::getReturnCodeString(ret).c_str()); } + logInfo("setting network password"); if ((ret = dot->setNetworkPassphrase(config_network_pass)) != mDot::MDOT_OK) { logError("failed to set network password %d:%s", ret, mDot::getReturnCodeString(ret).c_str()); } + + // a higher spreading factor allows for longer range but lower throughput + // in the 915 (US) frequency band, spreading factors 7 - 10 are available + // in the 868 (EU) frequency band, spreading factors 7 - 12 are available + logInfo("setting TX spreading factor"); + if ((ret = dot->setTxDataRate(mDot::SF_10)) != mDot::MDOT_OK) { + logError("failed to set TX datarate %d:%s", ret, mDot::getReturnCodeString(ret).c_str()); + } + + // request receive confirmation of packets from the gateway + logInfo("enabling ACKs"); + if ((ret = dot->setAck(1)) != mDot::MDOT_OK) { + logError("failed to enable ACKs %d:%s", ret, mDot::getReturnCodeString(ret).c_str()); + } + + // set join mode to AUTO_OTA so the mDot doesn't have to rejoin after sleeping + logInfo("setting join mode to AUTO_OTA"); + if ((ret = dot->setJoinMode(mDot::AUTO_OTA)) != mDot::MDOT_OK) { + logError("failed to set join mode %d:%s", ret, mDot::getReturnCodeString(ret).c_str()); + } + + // save this configuration to the mDot's NVM logInfo("saving config"); if (! dot->saveConfig()) { logError("failed to save configuration"); @@ -51,17 +80,12 @@ //******************************************* // end of configuration //******************************************* - - // attempt to join the network - logInfo("joining network"); - if ((ret = dot->joinNetwork()) != mDot::MDOT_OK) { - logError("failed to join network %d:%s", ret, mDot::getReturnCodeString(ret).c_str()); - } // format data for sending to the gateway for (std::string::iterator it = data_str.begin(); it != data_str.end(); it++) data.push_back((uint8_t) *it); + // join the network if not joined if (!dot->getNetworkJoinStatus()) { logInfo("network not joined, joining network"); if ((ret = dot->joinNetwork()) != mDot::MDOT_OK) { @@ -78,7 +102,8 @@ } } - uint32_t sleep_time = (dot->getNextTxMs() / 1000) + 10; + // in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again + uint32_t sleep_time = std::max((uint32_t)10000, (uint32_t)dot->getNextTxMs()) / 1000; logInfo("going to sleep..."); // go to deepsleep and wake up automatically sleep_time seconds later