This is a simple mbed client example demonstrating, registration of a device with mbed Device Connector and reading and writing values as well as deregistering on different Network Interfaces including Ethernet, WiFi, 6LoWPAN ND and Thread respectively.

Getting started with mbed Client on mbed OS

This is the mbed Client example for mbed OS. It demonstrates how to register a device with mbed Device Connector, how to read and write values, and how to deregister. If you are unfamiliar with mbed Device Connector, we recommend that you read the introduction to the data model first.

The application:

  • Connects to network with WiFi, Ethernet, 6LoWPAN ND or Thread connection.
  • Registers with mbed Device Connector.
  • Gives mbed Device Connector access to its resources (read and write).
  • Records the number of clicks on the device’s button and sends the number to mbed Device Connector.
  • Lets you control the blink pattern of the LED on the device (through mbed Device Connector).

Required hardware

  • K64F board.
  • 1-2 micro-USB cables.
  • mbed 6LoWPAN gateway router for 6LoWPAN ND and Thread.
  • mbed 6LoWPAN shield (AT86RF212B/AT86RF233 for 6LoWPAN ND and Thread.
  • Ethernet cable and connection to the internet.

Requirements for non K64F board

This example application is primarily designed for FRDM-K64F board but you can also use other mbed OS supported boards to run this example application , with some minor modifications for setup.

  • To get the application registering successfully on non K64F boards , you need Edit the mbed_app.json file to add NULL_ENTROPY feature for mbedTLS:

""macros": ["MBEDTLS_USER_CONFIG_FILE=\"mbedtls_mbed_client_config.h\"",
            "MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES",
            "MBEDTLS_TEST_NULL_ENTROPY"],
  • On non K64F boards, there is no unregistration functionality and button press is simulated through timer ticks incrementing every 15 seconds.

Application setup

To configure the example application, please check following:

Connection type

The application uses Ethernet as the default connection type. To change the connection type, set one of them in mbed_app.json. For example, to enable 6LoWPAN ND mode:

    "network-interface": {
        "help": "options are ETHERNET,WIFI,MESH_LOWPAN_ND,MESH_THREAD.",
        "value": "MESH_LOWPAN_ND"
    }

Client credentials

To register the application to the Connector service, you need to create and set the client side certificate.

  • Go to mbed Device Connector and log in with your mbed account.
  • On mbed Device Connector, go to My Devices > Security credentials and click the Get my device security credentials button to get new credentials for your device.
  • Replace the contents in `security.h` of this project's directory with content copied above.

6LoWPAN ND and Thread settings

First you need to select the RF driver to be used by 6LoWPAN/Thread stack.

For example Atmel AT86RF233/212B driver is located in https://github.com/ARMmbed/atmel-rf-driver

To add that driver to you application , import library from following URL:

https://github.com/ARMmbed/atmel-rf-driver

Then you need to enable the IPV6 functionality as the 6LoWPAN and Thread are part of IPv6 stack. Edit the mbed_app.json file to add IPV6 feature:

"target.features_add": ["CLIENT", "IPV6", "COMMON_PAL"],

6LoWPAN ND and Thread use IPv6 for connectivity. Therefore, you need to verify first that you have a working IPv6 connection. To do that, ping the Connector IPv6 address 2607:f0d0:2601:52::20 from your network.

mbed gateway

To connect the example application in 6LoWPAN ND or Thread mode to Connector, you need to set up an mbed 6LoWPAN gateway router as follows:

  • Use an Ethernet cable to connect the mbed 6LoWPAN gateway router to the internet.
  • Use a micro-USB cable to connect the mbed 6LoWPAN gateway router to your computer. The computer will list the router as removable storage.
  • The firmware for the gateway is located in the `GW_Binary` folder in the root of this example. Select the binary matching your application bootstrap mode:
  • For the 6LoWPAN ND bootstrap, use `gateway6LoWPANDynamic.bin`.
  • For the Thread bootstrap, use `gatewayThreadDynamic.bin`.

The dynamic binaries use IPv6 autoconfiguration and enable the client to connect to the Connector service. The static binaries create a site-local IPv6 network and packets cannot be routed outside.

  • Copy the gateway binary file to the mbed 6LoWPAN gateway router to flash the device. The device reboots automatically after flashing. If that does not happen, press the Reset button on the board.

You can view debug traces from the gateway with a serial port monitor. The gateway uses baud rate 460800. The gateway IPv6 address is correctly configured when the following trace is visible: `Eth bootstrap ready, IP=XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX`.

Channel settings

The default 2.4GHz channel settings are already defined by the mbed-mesh-api to match the mbed gateway settings. The application can override these settings by adding them to the mbed_app.json file in the main project directory. For example:

    "target_overrides": {
        "*": {
            "mbed-mesh-api.6lowpan-nd-channel-page": 0,
            "mbed-mesh-api.6lowpan-nd-channel": 12,
            "mbed-mesh-api.thread-config-channel-page": 0,
            "mbed-mesh-api.thread-config-channel": 12
        }
    }

For sub-GHz shields (AT86RF212B) use the following overrides, 6LoWPAN ND only:

"mbed-mesh-api.6lowpan-nd-channel-page": 2,
"mbed-mesh-api.6lowpan-nd-channel": 1

For more information about the radio shields, see [the related documentation](docs/radio_module_identify.md). All the configurable settings can be found in the mbed-os-example-client/mbed-os/features/FEATURE_IPV6/mbed-mesh-api/mbed_lib.json file.

Thread-specific settings

With Thread, you can change the operating mode of the client from the default router mode to a sleepy end device by adding the following override to the `mbed_app.json` file:

    "mbed-mesh-api.thread-device-type": "MESH_DEVICE_TYPE_THREAD_SLEEPY_END_DEVICE"

Ethernet settings

For running the example application using Ethernet, you need:

  • An Ethernet cable.
  • An Ethernet connection to the internet.

Wi-Fi settings

The example application uses ESP8266 WiFi Interface for managing the wireless connectivity. To run this application using WiFi, you need:

    "network-interface": {
        "help": "options are ETHERNET,WIFI,MESH_LOWPAN_ND,MESH_THREAD.",
        "value": "WIFI"
    }

Provide your WiFi SSID and password here and leave `\"` in the beginning and end of your SSID and password (as shown in the example below). Otherwise, the example cannot pick up the SSID and password in correct format.

    "wifi-ssid": {
        "help": "WiFi SSID",
        "value": "\"SSID\""
    },
    "wifi-password": {
        "help": "WiFi Password",
        "value": "\"Password\""
    }

IP address setup

This example uses IPv4 to communicate with the mbed Device Connector Server except for 6LoWPAN ND and Thread. The example program should automatically get an IPv4 address from the router when connected over Ethernet.

If your network does not have DHCP enabled, you have to manually assign a static IP address to the board. We recommend having DHCP enabled to make everything run smoothly.

Changing socket type

Your device can connect to mbed Device Connector via UDP or TCP binding mode. The default is UDP. The binding mode cannot be changed in 6LoWPAN ND or Thread mode.

To change the binding mode:

  • In the `simpleclient.h` file, find the parameter `SOCKET_MODE`. The default is `M2MInterface::UDP`.
  • To switch to TCP, change it to `M2MInterface::TCP`.
  • Rebuild and flash the application.

Tip: The instructions in this document remain the same, irrespective of the socket mode you select.

Monitoring the application

The application prints debug messages over the serial port, so you can monitor its activity with a serial port monitor. The application uses baud rate 115200.

SerialPC

After connecting, you should see messages about connecting to mbed Device Connector:

In app_start()
IP address 10.2.15.222
Device name 6868df22-d353-4150-b90a-a878130859d9

When you click the `SW2` button on your board you should see messages about the value changes:

handle_button_click, new value of counter is 1

Testing the application

  • Flash the application.
  • Verify that the registration succeeded. You should see `Registered object successfully!` printed to the serial port.
  • On mbed Device Connector, go to My devices > Connected devices. Your device should be listed here.
  • Press the `SW2` button on the device a number of times (make a note of how many times you did that).
  • Go to Device Connector > API Console.
  • Enter https://api.connector.mbed.com/endpoints/DEVICE_NAME/3200/0/5501 in the URI field and click TEST API. Replace DEVICE_NAME with your actual endpoint name. The device name can be found in the security.h file, see variable MBED_ENDPOINT_NAME or it can be found from the traces.
  • The number of times you pressed SW2 is shown.
  • Press the SW3 button to unregister from mbed Device Connector. You should see Unregistered Object Successfully printed to the serial port and the LED starts blinking. This will also stop your application. Press the `RESET` button to run the program again.

For more methods check the mbed Device Connector Quick Start.

Application resources

The application exposes three resources:

  • 3200/0/5501. Number of presses of SW2 (GET).
  • 3201/0/5850. Blink function, blinks LED1 when executed (POST).
  • 3201/0/5853. Blink pattern, used by the blink function to determine how to blink. In the format of 1000:500:1000:500:1000:500 (PUT).

For information on how to get notifications when resource 1 changes, or how to use resources 2 and 3, take a look at the mbed Device Connector Quick Start.

Building this example

Building with mbed CLI

If you'd like to use mbed CLI to build this, then you should follow the instructions in the Handbook TODO - new link. The instructions here relate to using the developer.mbed.org Online Compiler

If you'd like to use the online Compiler, then you can Import this code into your compiler, select your platform from the top right, compile the code using the compile button, load it onto your board, press the reset button on the board and you code will run. See the client go online!

More instructions for using the mbed Online Compiler can be found at TODO - update this

Revisions of mbed-os.lib

Revision Date Message Actions
158:79ba4b42ce83 2018-07-17 Merge pull request #414 from cmonr/master File  Diff  Annotate
156:57b79384e63e 2018-07-05 Updating mbed-os to mbed-os-5.9.2 File  Diff  Annotate
154:fffb2701a988 2018-06-19 Merge pull request #410 from adbridge/master File  Diff  Annotate
153:bfdc9d467a90 2018-06-16 Merge pull request #408 from ARMmbed/mbed-os-5.9.0-oob File  Diff  Annotate
151:cc55be8e9762 2018-06-07 Merge pull request #406 from adbridge/master File  Diff  Annotate
149:99f71569445d 2018-05-23 Updating mbed-os to mbed-os-5.8.5 File  Diff  Annotate
148:c955c1b36205 2018-05-11 Updating mbed-os to mbed-os-5.8.4 (#402) File  Diff  Annotate
144:85699197a3ff 2018-05-02 Merge pull request #397 from adbridge/master File  Diff  Annotate
142:64c3610ca0cd 2018-04-12 Merge pull request #395 from adbridge/master File  Diff  Annotate
141:7faed0a634bb 2018-04-03 Updating mbed-os to mbed-os-5.8.1 (#393) File  Diff  Annotate
140:7ecfe5a10bc3 2018-03-27 Updating mbed-os to mbed-os-5.8.0 (#388) File  Diff  Annotate
134:cc66004bb1a3 2018-02-22 Revert "Updating mbed-os to mbed-os-5.7.5" (#382) File  Diff  Annotate
131:0ad5711929ab 2018-02-12 Merge pull request #380 from adbridge/master File  Diff  Annotate
130:2418d81baa27 2018-01-31 Merge pull request #377 from cmonr/master File  Diff  Annotate
127:00892b957d1c 2018-01-16 Merge pull request #372 from adbridge/master File  Diff  Annotate
125:75687d272f7e 2018-01-04 Merge pull request #367 from adbridge/master File  Diff  Annotate
124:fdc95f8d423d 2017-12-29 Add Table of Contents to README.md File  Diff  Annotate
123:6b11bfd9dcae 2017-12-20 Merge Mbed OS 5.7.0 OOB to master (#363) File  Diff  Annotate
119:7973c02727d2 2017-12-07 Merge pull request #342 from adbridge/master File  Diff  Annotate
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111:75320663b6ea 2017-11-08 Merge pull request #330 from ARMmbed/mbedos564 File  Diff  Annotate
109:1042619d9a80 2017-10-11 Updating mbed-os to mbed-os-5.6.2 File  Diff  Annotate
108:fd0b2638cf1d 2017-10-06 Merge pull request #319 from ARMmbed/mbedos561-upd File  Diff  Annotate
107:e1a33d350c54 2017-09-28 Merge pull request #316 from ARMmbed/MbedOS560 File  Diff  Annotate
105:0e0a2ed52d00 2017-09-20 Initial commit. File  Diff  Annotate
102:14937d05c8c3 2017-09-06 Merge pull request #301 from ARMmbed/mbedos556 File  Diff  Annotate
99:068d8fa88a49 2017-08-03 Merge pull request #288 from ARMmbed/yogpan01-patch-3 File  Diff  Annotate
96:64bd58cedda1 2017-07-18 Update mbed OS to 5.5.3 File  Diff  Annotate
94:4c7c8c5685ee 2017-07-06 Updating mbed-os to mbed-os-5.5.2 File  Diff  Annotate
93:cf7774ef0e8b 2017-06-22 Merge pull request #265 from ARMmbed/yogpan01-patch-1 File  Diff  Annotate
91:60ecc29f2ba1 2017-06-20 Merge pull request #254 from ARMmbed/mbedos55-oob File  Diff  Annotate
90:a3295e8ffad3 2017-06-07 Merge pull request #256 from ARMmbed/yogpan01-patch-1 File  Diff  Annotate
88:8a56ee262052 2017-05-26 Update mbed OS to 5.4.6 File  Diff  Annotate
84:24fa744c63a4 2017-05-10 Merge pull request #242 from ARMmbed/mbedos-upd-545 File  Diff  Annotate
82:803f338a017c 2017-04-27 Update to mbedOS 5.4.4 File  Diff  Annotate
79:b25507540460 2017-04-11 Update mbed-os.lib File  Diff  Annotate
73:a30044690be4 2017-03-15 mbedOS 5.4.1 File  Diff  Annotate
70:23c95e43feb9 2017-03-09 Merge pull request #190 from ARMmbed/oob_test_mbed-os-5.4 File  Diff  Annotate
67:312b4fec81a2 2017-02-28 mbed OS 5.3.6 File  Diff  Annotate
64:d7458b04a609 2017-02-15 mbed OS 5.3.5 File  Diff  Annotate
60:64b1819f4793 2017-02-01 mbed OS 5.3.4 File  Diff  Annotate
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54:b82f6137dcb1 2017-01-09 mbed OS 5.3.2 File  Diff  Annotate
50:ff7d04c93314 2016-12-22 mbedOS 5.3.1 File  Diff  Annotate
47:c64ceb183891 2016-12-16 mbed OS 5.3.0 (2nd try) File  Diff  Annotate
46:9360459cf54e 2016-12-15 mbedOS 5.3 update (#150) File  Diff  Annotate
35:d681e90e7085 2016-11-25 Merge pull request #120 from ARMmbed/anttiylitokola-patch-1 File  Diff  Annotate
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32:7b3841243d70 2016-11-23 Merge pull request #116 from ARMmbed/revert-115-revert-5.2.3 File  Diff  Annotate
31:218ca6b6fe19 2016-11-23 Merge pull request #115 from ARMmbed/revert-5.2.3 File  Diff  Annotate
30:ac90dc55f55e 2016-11-22 update mbed-os library to mbed-os-5.2.3 (#114) File  Diff  Annotate
29:3d4e8c3e3721 2016-11-08 Merge pull request #108 from ARMmbed/mbed-os-5.2.0-1 File  Diff  Annotate
26:bb8801a6b7d0 2016-10-28 Updating mbed-os to mbed-os-5.2.1 File  Diff  Annotate
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