Mbed OS and Pelion Device Management example for FRDM-K64F and FRDM-K66F boards

Dependencies:   FXAS21002 FXOS8700Q

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

  • FRDM-K64F - onboard Ethernet and onboard SD card holder.
  • FRDM-K66F - onboard Ethernet and onboard SD card holder.

Follow the Quick-Start instructions: https://cloud.mbed.com/quick-start

FRDM-K64F FRDM-K66F

Example functionality

This example showcases the following device functionality:

  • Read onboard FXOS8700Q accelerometer and magnetometer, and report the values as Pelion LWM2M resources (see image below).
  • (FRDM-K66F only) Read onboard FXAS21002 gyroscope and report the values as Pelion LWM2M resources.
  • On user button click, increment Pelion LWM2M button resource.
  • Allow the user to change the state of the board LED from Pelion LWM2M led_state resource and PUT request.

/media/uploads/screamer/pelion_st_humidity_reading.png?v=2

Use this example with Mbed CLI

1. Import the application into your desktop:

mbed import https://os.mbed.com/teams/NXP/code/pelion-example-frdm

cd pelion-example-frdm

2. Install the CLOUD_SDK_API_KEY

mbed config -G CLOUD_SDK_API_KEY <PELION_DM_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 1.9.x or above.

4. Compile and program:

mbed compile -t <toolchain> -m <TARGET_BOARD>

(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 8374
[BOOT] Active firmware integrity check:
[BOOT] SHA256: 411F422DE8FF545E2D3C373E87D5328162A129314A655AEC32B9A167DE29177E
[BOOT] Version: 1553606618
[BOOT] Slot 0 is empty
[BOOT] Active firmware up-to-date
[BOOT] Application's start address: 0x10400
[BOOT] Application's jump address: 0x112C1
[BOOT] Application's stack address: 0x20030000
[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.

Sensors configuration:
FXOS8700Q accelerometer = 0xC7
FXOS8700Q magnetometer  = 0xC7
FXAS21002 gyroscope     = 0xB7

Connecting to the network using the default network interface...
Connected to the network successfully. IP address: 10.2.202.65
Initializing Pelion Device Management Client...
Initialized Pelion Device Management Client. Registering...
Press the user button to increment the LwM2M resource value...

FXOS8700Q mag:    0.312 x,   0.039 y,  -1.625 z [gauss]
FXOS8700Q acc:    0.139 x,  -0.123 y,   4.260 z [g]
FXAS21002 gryo:  13.089 x,  13.089 y,  13.089 z [dps]

update_default_resources.c

Committer:
screamer
Date:
5 months ago
Revision:
5:f2123dc31d30
Parent:
0:a9d53048f0b6

File content as of revision 5:f2123dc31d30:

// ----------------------------------------------------------------------------
// Copyright 2016-2017 ARM Ltd.
//
// SPDX-License-Identifier: Apache-2.0
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ----------------------------------------------------------------------------
 
#ifdef MBED_CLOUD_CLIENT_USER_CONFIG_FILE
#include MBED_CLOUD_CLIENT_USER_CONFIG_FILE
#endif
 
#include <stdint.h>
 
#ifdef MBED_CLOUD_DEV_UPDATE_ID
const uint8_t arm_uc_vendor_id[16] = { "dev_manufacturer" };
const uint16_t arm_uc_vendor_id_size = sizeof(arm_uc_vendor_id);
 
const uint8_t arm_uc_class_id[16]  = { "dev_model_number" };
const uint16_t arm_uc_class_id_size = sizeof(arm_uc_class_id);
#endif
 
#ifdef MBED_CLOUD_DEV_UPDATE_CERT
const uint8_t arm_uc_default_fingerprint[32] = { 0 };
const uint16_t arm_uc_default_fingerprint_size =
    sizeof(arm_uc_default_fingerprint);
 
const uint8_t arm_uc_default_certificate[1] = { 0 };
const uint16_t arm_uc_default_certificate_size =
    sizeof(arm_uc_default_certificate);
#endif