a Hello world to connect to The Things Network

Dependencies:   libmDot mbed-rtos mbed

Fork of mDot_LoRa_Connect_Example by MultiTech

main.cpp

Committer:
mfiore
Date:
2015-06-24
Revision:
0:09250cd371d2
Child:
2:6e2c378339d9

File content as of revision 0:09250cd371d2:

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

// these options must match the settings on your Conduit in
// /var/config/lora/lora-network-server.conf
static std::string config_network_name = "<lora network id>";
static std::string config_network_pass = "<lora network key>";
static uint8_t config_frequency_sub_band = 1;

void log_error(mDot* dot, const char* msg, int32_t retval);

int main() {
    int32_t ret;
    mDot* dot;
    std::vector<uint8_t> data;
    std::string data_str = "hello world!";

    // get a mDot handle
    dot = mDot::getInstance();

    // reset to default config so we know what state we're in
    dot->resetConfig();
    
    // print library version information
    printf("version: %s\r\n", dot->getId().c_str());

    // set up the mDot with our network information
    printf("setting frequency sub band\r\n");
    if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK) {
        log_error(dot, "failed to set frequency sub band", ret);
    }
    printf("setting network name\r\n");
    if ((ret = dot->setNetworkName(config_network_name)) != mDot::MDOT_OK) {
        log_error(dot, "failed to set network name", ret);
    }
    printf("setting network password\r\n");
    if ((ret = dot->setNetworkPassphrase(config_network_pass)) != mDot::MDOT_OK) {
        log_error(dot, "failed to set network password", ret);
    }

    // attempt to join the network
    printf("joining network\r\n");
    while ((ret = dot->joinNetwork()) != mDot::MDOT_OK) {
        log_error(dot, "failed to join network", ret);
        wait(2);
    }

    // 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);

    while (true) {
        // send the data
        // ACKs are enabled by default, so we're expecting to get one back
        if ((ret = dot->send(data)) != mDot::MDOT_OK) {
            log_error(dot, "failed to send", ret);
        } else {
            printf("successfully sent data to gateway\r\n");
        }

        wait(5);
    }

    return 0;
}

void log_error(mDot* dot, const char* msg, int32_t retval) {
    printf("%s - %ld:%s, %s\r\n", msg, retval, mDot::getReturnCodeString(retval).c_str(), dot->getLastError().c_str());
}