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Re: [wakaama-dev] LWM2M 1.1 next steps
  • From: Scott Bertin <Scott.Bertin@xxxxxxxxxx>
  • Date: Wed, 31 Jul 2019 15:51:07 +0000
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  • Thread-topic: LWM2M 1.1 next steps

I’ve completed my work for SenML-CBOR support. I ended up writing my own parser/serializer because cn-cbor was requiring too much RAM.

 

Regards,

Scott

 

Scott Bertin
Sr Firmware Engineer
P: +1 678-264-2042 | C: | Scott.Bertin@xxxxxxxxxx
3225 Cumberland Boulevard
Suite 300 | Atlanta | GA 30339 | Telular.com

From: wakaama-dev-bounces@xxxxxxxxxxx <wakaama-dev-bounces@xxxxxxxxxxx> On Behalf Of Scott Bertin
Sent: Friday, July 19, 2019 11:31 AM
To: Wakaama developer discussions <wakaama-dev@xxxxxxxxxxx>
Subject: Re: [wakaama-dev] LWM2M 1.1 next steps

 

***NOTICE*** This came from an external source. Use caution when replying, clicking links, or opening attachments.

I’ve completed the Read-Composite and Send operations. They can be found in https://github.com/sbertin-telular/wakaama/tree/lwm2m_1.1.

 

Here is what I see still needs to be implemented (no particular order):

  • New attributes (Minimum/Maximum evaluation period) and attributes at the resource instance level. Attributes as a whole could use a rework to be compliant.
  • Write-Composite. With the current Wakaama design I’m not sure this can be implemented atomically.
  • Observe-Composite
  • Cancel Observation-Composite
  • TCP binding. David Navarro has said (wakaama-dev 2/20/2019) that he has already implemented it, but it hasn’t been released yet.
  • LWM2M 1.1.1 compatibility changes
  • New optional resources in objects for the client example
  • OSCORE. David Navarro has said (wakaama-dev 2/20/2019) someone is working on this.
  • SenML-CBOR. Ideally this would be based on whatever CBOR is used for the OSCORE support to prevent having multiple CBOR parsers/serializers.
  • Enforcing access control. LWM2M 1.1.1 makes this optional for an “Access Control-Disabled” configuration where only 1 server is supported.

 

For my immediate needs all that is missing is SenML-CBOR support. I plan to implement SenML-CBOR support based on cn-cbor, which I am already using. I understand that the license may or may not be acceptable to the Eclipse Foundation, so it may not ever get merged into Wakaama.

 

After that I will be taking a break from Wakaama development to merge all the latest changes into my codebase. When pull requests start getting feedback/merged into Wakaama again I’ll support them and getting my latest changes merged cleanly.

 

Regards,

Scott Bertin

Scott Bertin

Sr Firmware Engineer

P: +1 678-264-2042 | C: | Scott.Bertin@xxxxxxxxxx

3225 Cumberland Boulevard
Suite 300 | Atlanta | GA 30339 | Telular.com

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