MultiTech / libmDot-mbed5

Stable version of the mDot library for mbed 5. This version of the library is suitable for deployment scenarios. See lastest commit message for version of mbed-os library that has been tested against.

Dependents:   mdot_two_way unh-hackathon-example unh-hackathon-example-raw TelitSensorToCloud ... more

Fork of libmDot-dev-mbed5-deprecated by MultiTech

The Dot library provides a LoRaWan certified stack for LoRa communication using MultiTech mDot and xDot devices. The stack is compatible with mbed 5.

The name of the repository can be used to determine which device the stack was compiled for and if it's a development or production-ready build:

A changelog for the Dot library can be found here.

The Dot library version and the version of mbed-os it was compiled against can both be found in the commit message for that revision of the Dot library. Building your application with the same version of mbed-os as what was used to build the Dot library is highly recommended!

The Dot-Examples repository demonstrates how to use the Dot library in a custom application.

The mDot and xDot platform pages have lots of platform specific information and document potential issues, gotchas, etc, and provide instructions for getting started with development. Please take a look at the platform page before starting development as they should answer many questions you will have.

FOTA

Full FOTA support is only available with mDot, xDot does not have the required external flash. xDot can use the FOTA example to dynamically join a multicast session only. After joining the multicast session the received Fragmentation packets could be handed to a host MCU for processing and at completion the firmware can be loaded into the xDot using the bootloader and y-modem. See xDot Developer Guide.

  • Add the following code to allow Fota to use the Dot instance

main.cpp

    // Initialize FOTA singleton
    Fota::getInstance(dot);
  • Add fragmentation handling the the PacketRx event

RadioEvent.h

    virtual void PacketRx(uint8_t port, uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr, lora::DownlinkControl ctrl, uint8_t slot, uint8_t retries, uint32_t address, bool dupRx) {
        mDotEvent::PacketRx(port, payload, size, rssi, snr, ctrl, slot, retries, address, dupRx);

#if ACTIVE_EXAMPLE == FOTA_EXAMPLE
        if(port == 200 || port == 201 || port == 202) {
            Fota::getInstance()->processCmd(payload, port, size);
        }
#endif
    }

A definition is needed to enable Fragmentation support on mDot and save fragments to flash. This should not be defined for xDot and will result in a compiler error.

mbed_app.json

{
    "macros": [
        "FOTA=1"
    ]
}

The FOTA implementation has a few differences from the LoRaWAN Protocol

  • Fragmentation Indexing starts at 0
  • McKEKey is 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
  • Start Time is a count-down in seconds to start of session

README.txt@69:e22889c7eaa9, 2019-08-29 (annotated)

Committer:
Jenkins@KEILDM1.dc.multitech.prv
Date:
Thu Aug 29 12:21:51 2019 -0500
Revision:
69:e22889c7eaa9
Parent:
13:5ac2300dc06a 
mdot-library revision 3.2.1 and mbed-os revision mbed-os-5.13.4

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Mike Fiore 1:9f30fbe9e9c1 1 ---------------------------------------
Mike Fiore 1:9f30fbe9e9c1 2 Getting Started with the mDot Library
Mike Fiore 1:9f30fbe9e9c1 3 ---------------------------------------
Mike Fiore 1:9f30fbe9e9c1 4
Mike Fiore 1:9f30fbe9e9c1 5 This README should get you started using the mDot library with your MultiTech mDot.
Mike Fiore 1:9f30fbe9e9c1 6
Mike Fiore 1:9f30fbe9e9c1 7 License information can be found in the accompanying LICENSE file.
Mike Fiore 1:9f30fbe9e9c1 8
Mike Fiore 13:5ac2300dc06a 9 The mDot header has documentation for all the public functions that will be useful to consumers of the library.
Mike Fiore 1:9f30fbe9e9c1 10
Mike Fiore 13:5ac2300dc06a 11 The following source code provides an example application which configures the mDot, connects to a MultiTech Conduit gateway with matching configuration, and sends data packets to the gateway.
Mike Fiore 2:6385bf37bfe7 12
Mike Fiore 1:9f30fbe9e9c1 13 /**************
Mike Fiore 1:9f30fbe9e9c1 14 SAMPLE CODE
Mike Fiore 1:9f30fbe9e9c1 15 **************/
Mike Fiore 1:9f30fbe9e9c1 16
Mike Fiore 1:9f30fbe9e9c1 17 #include "mbed.h"
Mike Fiore 1:9f30fbe9e9c1 18 #include "mDot.h"
Mike Fiore 1:9f30fbe9e9c1 19 #include <string>
Mike Fiore 1:9f30fbe9e9c1 20 #include <vector>
Mike Fiore 1:9f30fbe9e9c1 21
Mike Fiore 1:9f30fbe9e9c1 22 // these options must match the settings on your Conduit in
Mike Fiore 1:9f30fbe9e9c1 23 // /var/config/lora/lora-network-server.conf
Mike Fiore 1:9f30fbe9e9c1 24 static std::string config_network_name = "my_lora_network";
Mike Fiore 1:9f30fbe9e9c1 25 static std::string config_network_pass = "my_network_password";
Mike Fiore 1:9f30fbe9e9c1 26 static uint8_t config_frequency_sub_band = 1;
Mike Fiore 1:9f30fbe9e9c1 27
Mike Fiore 1:9f30fbe9e9c1 28 void log_error(mDot* dot, const char* msg, int32_t retval);
Mike Fiore 1:9f30fbe9e9c1 29
Mike Fiore 1:9f30fbe9e9c1 30 int main() {
Mike Fiore 1:9f30fbe9e9c1 31 int32_t ret;
Mike Fiore 1:9f30fbe9e9c1 32 mDot* dot;
Mike Fiore 1:9f30fbe9e9c1 33 std::vector<uint8_t> data;
Mike Fiore 1:9f30fbe9e9c1 34 std::string data_str = "hello world!";
Mike Fiore 1:9f30fbe9e9c1 35
Mike Fiore 1:9f30fbe9e9c1 36 // get a mDot handle
Mike Fiore 1:9f30fbe9e9c1 37 dot = mDot::getInstance();
Mike Fiore 1:9f30fbe9e9c1 38
Mike Fiore 1:9f30fbe9e9c1 39 // reset to default config so we know what state we're in
Mike Fiore 1:9f30fbe9e9c1 40 dot->resetConfig();
Mike Fiore 1:9f30fbe9e9c1 41
Mike Fiore 1:9f30fbe9e9c1 42 // print library version information
Mike Fiore 1:9f30fbe9e9c1 43 printf("version: %s\r\n", dot->getId().c_str());
Mike Fiore 1:9f30fbe9e9c1 44
Mike Fiore 1:9f30fbe9e9c1 45 // set up the mDot with our network information
Mike Fiore 1:9f30fbe9e9c1 46 printf("setting frequency sub band\r\n");
Mike Fiore 1:9f30fbe9e9c1 47 if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK) {
Mike Fiore 1:9f30fbe9e9c1 48 log_error(dot, "failed to set frequency sub band", ret);
Mike Fiore 1:9f30fbe9e9c1 49 }
Mike Fiore 1:9f30fbe9e9c1 50 printf("setting network name\r\n");
Mike Fiore 1:9f30fbe9e9c1 51 if ((ret = dot->setNetworkName(config_network_name)) != mDot::MDOT_OK) {
Mike Fiore 1:9f30fbe9e9c1 52 log_error(dot, "failed to set network name", ret);
Mike Fiore 1:9f30fbe9e9c1 53 }
Mike Fiore 1:9f30fbe9e9c1 54 printf("setting network password\r\n");
Mike Fiore 1:9f30fbe9e9c1 55 if ((ret = dot->setNetworkPassphrase(config_network_pass)) != mDot::MDOT_OK) {
Mike Fiore 1:9f30fbe9e9c1 56 log_error(dot, "failed to set network password", ret);
Mike Fiore 1:9f30fbe9e9c1 57 }
Mike Fiore 1:9f30fbe9e9c1 58
Mike Fiore 1:9f30fbe9e9c1 59 // attempt to join the network
Mike Fiore 1:9f30fbe9e9c1 60 printf("joining network\r\n");
Mike Fiore 3:5e805b567124 61 while ((ret = dot->joinNetwork()) != mDot::MDOT_OK) {
Mike Fiore 1:9f30fbe9e9c1 62 log_error(dot, "failed to join network", ret);
Mike Fiore 3:5e805b567124 63 wait(2);
Mike Fiore 1:9f30fbe9e9c1 64 }
Mike Fiore 1:9f30fbe9e9c1 65
Mike Fiore 1:9f30fbe9e9c1 66 // format data for sending to the gateway
Mike Fiore 1:9f30fbe9e9c1 67 for (std::string::iterator it = data_str.begin(); it != data_str.end(); it++)
Mike Fiore 1:9f30fbe9e9c1 68 data.push_back((uint8_t) *it);
Mike Fiore 1:9f30fbe9e9c1 69
Mike Fiore 1:9f30fbe9e9c1 70 while (true) {
Mike Fiore 1:9f30fbe9e9c1 71 // send the data
Mike Fiore 1:9f30fbe9e9c1 72 // ACKs are enabled by default, so we're expecting to get one back
Mike Fiore 1:9f30fbe9e9c1 73 if ((ret = dot->send(data)) != mDot::MDOT_OK) {
Mike Fiore 1:9f30fbe9e9c1 74 log_error(dot, "failed to send", ret);
Mike Fiore 1:9f30fbe9e9c1 75 } else {
Mike Fiore 1:9f30fbe9e9c1 76 printf("successfully sent data to gateway\r\n");
Mike Fiore 1:9f30fbe9e9c1 77 }
Mike Fiore 1:9f30fbe9e9c1 78
Mike Fiore 1:9f30fbe9e9c1 79 wait(5);
Mike Fiore 1:9f30fbe9e9c1 80 }
Mike Fiore 1:9f30fbe9e9c1 81
Mike Fiore 1:9f30fbe9e9c1 82 return 0;
Mike Fiore 1:9f30fbe9e9c1 83 }
Mike Fiore 1:9f30fbe9e9c1 84
Mike Fiore 1:9f30fbe9e9c1 85 void log_error(mDot* dot, const char* msg, int32_t retval) {
Mike Fiore 1:9f30fbe9e9c1 86 printf("%s - %ld:%s, %s\r\n", msg, retval, mDot::getReturnCodeString(retval).c_str(), dot->getLastError().c_str());
Mike Fiore 1:9f30fbe9e9c1 87 }