Release notes

CMi6140 1.3.1

Release date: 2024-03-18

Configuration changes: No changed configuration parameters.

Integration considerations: Object versions for 33905 and 33906 changed due to changes in definitions/descriptions, see ID MCM-6359 and MCM-6214 below.

Background: This release fixes an issue related to LwM2M send, detected in the previous firmware release of CMi6140. If not using the LwM2M send feature, devices are operating as they are intended to do. The release also corrects a potential issue if using the newly introduced pulse message format, occasionally falsely sending too big data packages. In addition to adding some other general improvements and fixing some bugs, it also adds the possibility to manually configure PLMN using NFC.

Table 52. Implemented changes

ID

Description

MCM-6367

Possibility to manually configure PLMN via NFC added

MCM-6474

[SOLVED] Too large data packages could cause device falsely sending zeros in M-Bus payload

MCM-6406

[SOLVED] Value sometimes sent with wrong timestamp in CBOR payload

MCM-6381

[SOLVED] Previous manual PLMN configuration could lead to lost network connection

MCM-6359

[SOLVED] LwM2M resource 33906/0/57 defined as bool instead of integer

MCM-6308

[SOLVED] Possible error when reading entire object 33906 (MCM Config) if having resource(s) not implemented within the object

MCM-6277

[SOLVED] LwM2M Send transmitted at the same time as Reg Update fails

MCM-6214

[SOLVED] Misleading information in LwM2M XML for objects 33905 and 33906. Range for /33905/../2 updated to 0..3 to match implementation. Object versions incremented to indicate change.

MCM-5924

[SOLVED] Device could send zero energy value if unable to read meter


CMi6140 1.3.0

Release date: 2024-01-05

Configuration changes:

  • Added Bootstrap URI as alternative to bootstrap IP

  • Added Manual PLMN with staging for setting PLMN in device

  • Added MQTT keep alive timeout (was previously hard coded to ~18h)

  • Added LwM2M force queue mode setting to control if queue mode is used

  • Added info log enable setting (default off)

Notes: New LwM2M object version set for /33906/x/x/ (MCM Config)

Background: This new firmware comes with several new features improving the overall performance of the CMi6140, see list of highlighted implemented features below.Please note that the new firmware name is 1.3.0, replacing 1.0.2. To harmonize the naming of products using the Elvaco NB-IoT platform, the sequentially correct naming, 1.1.0, has been skipped intentionally.

Table 53. Implemented changes

ID

Description

MCM-6182

Object version for MCM Config Object (33906) updated to 2.2

MCM-6123

Operating hours included in Pulse message format

MCM-6016

Transmit meter Info Log data

MCM-5610

Added configuration to manually select network (PLMN)

MCM-5608

RTC timestamp is used for LwM2M Send

MCM-5580

Configure client usage of LwM2M Queue Mode

MCM-5554

Modem IMSI is now readable in production

MCM-5372

DTLS Connection ID (53->54) updated according to DTLS 1.2 (RFC 9146)

MCM-5102

Added Release Assistance Indication (RAI) support for LwM2M

MCM-4735

Possible to configure bootstrap server using URI

MCM-3871

MQTT-SN Compliant timeout is now configurable

MCM-6099

[Solved] Allow correct maximum values for T3412 and T3324 according to 3GPP TS 24.008

MCM-6047

[Solved] Bad range/description for XML resource /33906/0/51 Enable RAI

MCM-5922

[Solved] MD Upload via LwM2M does not work when same Tx Interval and DM Lifetime

MCM-5653

[Solved] Correctly identify module on meter requests, such as when using Kamstrup Meter Tool for meter configuration.

MCM-5403

[Solved] BC66 modem driver misses incoming back-to-back packets

MCM-5352

[Solved] Periodic Vavg measuring active during modem DFOTA upgrade phase.

MCM-5119

[Solved] Resource changes from DM not always applied in device

MCM-4759

[Solved] Readouts and uploads can be accidentally started via NFC in inactive mode, leading to unplanned meter readouts and higher power consumption

MCM-4533

[Solved] Registation Uptime resource (/33909/0/6) is reset by PSM

MCM-4356

[Solved] Trigger sending of readouts using LwM2M in Queue mode not working

MCM-3916

[Solved] Factory reset via LwM2M not supported

MCM-3736

[Solved] MDM Uploads stopped working in Compliant mode

MCM-3735

[Solved] MQTT-SN Compliant mode not working


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