File content as of revision 2:ffac7b141b72:

#include "dot_util.h"
 
#if ACTIVE_EXAMPLE == OTA_EXAMPLE

///////////////////////////////////////////////////////////
// these options must match the settings on your gateway //
// edit their values to match your configuration         //
// frequency sub band is only relevant for the 915 bands //
///////////////////////////////////////////////////////////
static std::string network_name = "mikes_lora_network";
static std::string network_passphrase = "password_123";
static uint8_t frequency_sub_band = 6;
static bool public_network = false;
static uint8_t ack = 1;

// deepsleep consumes slightly less current than sleep
// in sleep mode, IO state is maintained, RAM is retained, and application will resume after waking up
// in deepsleep mode, IOs float, RAM is lost, and application will start from beginning after waking up
// if deep_sleep == true, device will enter deepsleep mode
static bool deep_sleep = false;

mDot* dot = NULL;

Serial pc(USBTX, USBRX);

#if defined(TARGET_XDOT_L151CC)
I2C i2c(I2C_SDA, I2C_SCL);
ISL29011 lux(i2c);
#else
AnalogIn lux(XBEE_AD0);
#endif

int main() {
    pc.baud(115200);

    mts::MTSLog::setLogLevel(mts::MTSLog::TRACE_LEVEL);
    
    dot = mDot::getInstance();

    // make sure library logging is turned on
    dot->setLogLevel(mts::MTSLog::INFO_LEVEL);

    // update configuration if necessary, then display it
    if (dot->getJoinMode() != mDot::OTA) {
        logInfo("changing network join mode to OTA");
        if (dot->setJoinMode(mDot::OTA) != mDot::MDOT_OK) {
            logError("failed to set network join mode to OTA");
        }
    }
    update_ota_config(network_name, network_passphrase, frequency_sub_band, public_network, ack);
    display_config();

    // restore the saved session if the dot woke from deepsleep mode
    // useful to use with deepsleep because session info is otherwise lost when the dot enters deepsleep
    if (dot->getStandbyFlag()) {
        logInfo("restoring network session from NVM");
        dot->restoreNetworkSession();
    }
    
    while (true) {
        uint16_t light;
        std::vector<uint8_t> tx_data;

        // join network if not joined
        if (!dot->getNetworkJoinStatus()) {
            join_network();
        }

#if defined(TARGET_XDOT_L151CC)
        // configure the ISL29011 sensor on the xDot-DK for continuous ambient light sampling, 16 bit conversion, and maximum range
        lux.setMode(ISL29011::ALS_CONT);
        lux.setResolution(ISL29011::ADC_16BIT);
        lux.setRange(ISL29011::RNG_64000);

        // get the latest light sample and send it to the gateway
        light = lux.getData();
        tx_data.push_back((light >> 8) & 0xFF);
        tx_data.push_back(light & 0xFF);
        logInfo("light: %lu [0x%04X]", light, light);
        send_data(tx_data);

        // put the LSL29011 ambient light sensor into a low power state
        lux.setMode(ISL29011::PWR_DOWN);
#else 
        // get some dummy data and send it to the gateway
        light = lux.read_u16();
        tx_data.push_back((light >> 8) & 0xFF);
        tx_data.push_back(light & 0xFF);
        logInfo("light: %lu [0x%04X]", light, light);
        send_data(tx_data);
#endif

        // if going into deepsleep mode, save the session so we don't need to join again after waking up
        // not necessary if going into sleep mode since RAM is retained
        if (deep_sleep) {
            logInfo("saving network session to NVM");
            dot->saveNetworkSession();
        }

        // ONLY ONE of the three functions below should be uncommented depending on the desired wakeup method
        //sleep_wake_rtc_only(deep_sleep);
        //sleep_wake_interrupt_only(deep_sleep);
        sleep_wake_rtc_or_interrupt(deep_sleep);
    }
 
    return 0;
}

#endif