TTN OTAA Test w/ Multitech mDot

ttn_otaa_test.cpp

#include "mbed.h"
#include "mDot.h"
#include "MTSLog.h"
#include <string>
#include <vector>

#define SLEEPTIME 5*60*1000

static uint8_t config_appEui[] = { <appEUI> };
static uint8_t config_appKey[] = { <appKey> };
static uint8_t config_frequency_sub_band = 2;
    
std::vector<uint8_t> data;

mDot* dot;

void setupNetwork();

int main() {
    setupNetwork();
    
    int32_t ret;
        
    float _temperature = 73.45;         
    uint32_t temperature = (_temperature * 1000000);
    uint8_t tByteArr[4];

    for (int i = 0; i < 4; i++) {
        tByteArr[i] = (temperature >> (i * 8));
    }

    // push 1 byte chunks of 'temperature' into a byte vector
    for (int i = 0; i < 4; i++) {
        data.push_back(tByteArr[i]);
    }
    
    // Send the data
    if ((ret = dot->send(data)) != mDot::MDOT_OK) {
        // Oops, there was an error, check the debug screent
        logError("Failed to send", ret, mDot::getReturnCodeString(ret).c_str());
    } else {
        // Sent the data
        logInfo("Successfully sent data");
    }

    // Enter deep sleep
    uint32_t sleep_time = SLEEPTIME;
    
    sleep_time = sleep_time / 1000;
    dot->sleep(sleep_time, dot->RTC_ALARM, true);
}

void setupNetwork() {
    
    int32_t ret;

    // get a mDot handle
    dot = mDot::getInstance();
    
    // print library version information
    logInfo("Version: %s", dot->getId().c_str());

    // reset to default config so we know what state we're in
    dot->resetConfig();
    
    dot->setLogLevel(mts::MTSLog::INFO_LEVEL);
    
    //joinmode: [MANUAL = ABP]/[OTA]/[AUTO_OTA]
    dot->setJoinMode(mDot::AUTO_OTA);
        
    // 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
    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());
    }
    
    std::vector<uint8_t> temp;

    if ((ret = dot->setPublicNetwork(true)) != mDot::MDOT_OK) {
        logError("Failed to enable public network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
    }

    for (int i = 0; i < 8; i++) {
        temp.push_back(config_appEui[i]);    
    }
 
    logInfo("setting App EUI ");
    if ((ret = dot->setNetworkId(temp)) != mDot::MDOT_OK) {
        logError("failed to set App EUI %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
    }
    
    temp.clear();
    for (int i = 0; i < 16; i++) {
        temp.push_back(config_appKey[i]);
    }
    
    logInfo("setting App Key ");
    if ((ret = dot->setNetworkKey(temp)) != mDot::MDOT_OK) {
        logError("failed to set AppKey %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
    logInfo("Setting TX spreading factor");
    if ((ret = dot->setTxDataRate(mDot::SF_7)) != 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("Disabling ACKs");
    if ((ret = dot->setAck(0)) != mDot::MDOT_OK) {
        logError("Failed to enable ACKs %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");
    }
    
    logInfo("Joining Network");
 
    while ((ret = dot->joinNetwork()) != mDot::MDOT_OK) {
        logError("failed to join network [%d][%s]", ret, mDot::getReturnCodeString(ret).c_str());
        wait_ms(100);
    }
 
    logInfo("Joined Network");
}