Pelion Device Management example over 15.4 Thread for Thunderboard Sense 2 board

Dependencies:   ICM20648 BMP280 Si1133 Si7210 AMS_CCS811_gas_sensor SI7021


This example application is not maintained and not recommended. It uses an old version of Mbed OS, Pelion DM, and Arm toolchain. It doesn't work with Mbed Studio.

Please use:

This example is known to work great on the following platforms:

Follow the Quick-Start instructions:

Thunderboard Sense 2

Example functionality

This example showcases the following device functionality:

  • Read onboard sensors, and report them as Pelion LWM2M resources:
    • Barometric Pressure and Temperature (BMP280)
    • Relative Humidity and Temperature (Si7021)
    • Air quality - CO2 and tVOC (CCS811)
    • Light intensity and UV level (Si1133)
    • Hall effect and Temperature (Si7210)
    • Accelerometer and Gyroscope (ICM20648)
  • It also exposes the RGB LEDs for triggering flashes in a specific color
  • On user button click, increment Pelion LWM2M button resource.


15.4 Thread setup

This example program requires that a Thread Border Router is available. A Border Router is a network gateway between a wireless 6LoWPAN mesh network and a backhaul network. It controls and relays traffic between the two networks. In a typical setup, a 6LoWPAN border router is connected to another router in the backhaul network (over Ethernet or a serial line) which in turn forwards traffic to/from the internet or a private company LAN, for instance.

Instructions how to set up a Thread Border Router

Use this example with Mbed CLI

1. Import the application into your desktop:

mbed import

cd pelion-example-tbsense2

2. Install the CLOUD_SDK_API_KEY


For instructions on how to generate your API key, please see the documentation.

3. Initialize firmware credentials (done once per repository). You can use the following command:

mbed dm init -d "<your company name in Pelion DM>" --model-name "<product model identifier>" -q --force

If above command do not work for your Mbed CLI, please consider upgrading Mbed CLI to version 1.8.x or above.

4. Compile and program:

mbed compile -t <toolchain> -m TB_SENSE_2

(supported toolchains : GCC_ARM / ARM / IAR)

5. You can connect on a virtual terminal/COM port to the platform using:

mbed sterm -b 115200

This should give you an output similar to:

[BOOT] Mbed Bootloader
[BOOT] ARM: 00000000000000000000
[BOOT] OEM: 00000000000000000000
[BOOT] Layout: 0 90AC
[BOOT] Active firmware integrity check:
[BOOT] SHA256: 615A11A7F03B1F048573E2CB51D8C9A5DD4E6F17A7F8E79C4B64E3241FF78974
[BOOT] Version: 1553594998
[BOOT] Slot 0 is empty
[BOOT] Active firmware up-to-date
[BOOT] Application's start address: 0x10400
[BOOT] Application's jump address: 0x10FBD
[BOOT] Application's stack address: 0x20040000
[BOOT] Forwarding to application...

Starting Simple Pelion Device Management Client example
You can hold the user button during boot to format the storage and change the device identity.
Connecting to the network using 802.15.4...
Connected to the network successfully. IP address: 2001:****:****:****:****:****:****:73bc
Initializing Pelion Device Management Client...
Si7021 Electronic Serial Number:                0         15b5ffff, firmware rev 20
Registered to Pelion Device Management. Endpoint Name: 0169b91a********************01a0
BMP280 temp:     32.750 C,   pressure: 1030.750 [mbar]            
Si7021 temp:     27.529 C,   humidity:   24.842 %                 
Si7210 temp:     34.484 C,   field:      -0.076 [mT]              
Si1133 light:  1258.574 lux, UV level:    0.031                       
CCS811 CO2:           0 ppm, VoC:             0 ppb                   
ICM20648 acc:    -0.093 x,  -0.057 y,     0.969 z [mg]            
ICM20648 gyro:   -1.503 x,   0.122 y,    -0.771 z [mdps]