BLE Mesh on Nrf52832, Tags are Battery Powered. Advertisement and Sleep on Tag Periodically Required ~2.2uA current consumption.

[starkAbhi]

Hi,

i am using nrf connect extension in vs code with Zephyr OS build v3.2.99-ncs2 and Nrf connect SDK 2.3.0. Our Application requirement as Shown in below Image.

.

Tags: Sleep -> Wakeup-> Transmit Message-> Sleep periodically in interval of 5 min. Tags are Battery Powered. how can i achieve sleep mechanism with nrf52832 soc? system off example only put whole mesh tag in Deep sleep. are there any example in which it starts mesh -> send data-> back to sleep with ~ 2.2uA current consumption?

I use this given code to put normal device in sleep:

k_sleep(K_SECONDS(10)); //sleep
pm_state_force(0u, &(struct pm_state_info){PM_STATE_SUSPEND_TO_IDLE, 0, 0}); //nrfonly switch: 2.2 uA
k_sleep(K_SECONDS(10)); //sleep

Regards

Abhishek

[tesc]

Hi,

This case looks like a duplicate of BLE Mesh on Nrf52832 Event based System on Sleep. Anchor and Tag are Battery Powered. Please continue the discussion there instead. Thanks.

Regards,
Terje

[starkAbhi]

Hi Terje,

tesc said:

This case looks like a duplicate of BLE Mesh on Nrf52832 Event based System on Sleep. Anchor and Tag are Battery Powered. Please continue the discussion there instead. Thanks.

Actually, I noticed asking too many query in  one Ticket lead to miscommunication and not all my questions are being answered recently. that's why i split my question in two parts. I have no problem to continue in one ticket.

Regards,

Abhishek

[tesc]

Hi,

I might have concluded too quickly. The cases looked like the same at first glance, but use of the same introduction and figure might have thrown me off.

This question is solely about the tags, while the other one is for the anchors? Sure, we can take the tag questions here, as I do agree they differ from the case of the anchors - although I think in this case we should take one step back first, to see at the overall design of the system first. How to solve it depends on what technology should be used for the tags, for instance low power node (LPN) or plain BLE beacon. I therefore suggest we discuss the overall architecture in the other thread, before continuing here (when we know for certain what the tags will be.)

Regards,
Terje

[starkAbhi]

Hi Terje,

tesc said:

This question is solely about the tags, while the other one is for the anchors?

Yes, Tags are periodically advertise message and then goes to sleep. to save power.

tesc said:

How to solve it depends on what technology should be used for the tags, for instance low power node (LPN) or plain BLE beacon.

Tags are battery Powered with lowest power consumption. because tags are moving from one range of Anchor to Other Anchors. 

tesc said:

I therefore suggest we discuss the overall architecture in the other thread, before continuing here (when we know for certain what the tags will be.)

Got it no problem.

Regards,

Abhishek

[starkAbhi]

Hi Terje,

How can i send Raw data over BLE Mesh? without any encryption and decryption. Transmitting raw hex data from tag to anchor?

Regards

Abhishek

[tesc]

Hi,

Depending on what data you are going to send, you may find that an existing model cover your need (for instance sensor model). Otherwise you can make your own, vendor specific model. One example of a vendor model is the Chat Client model in nRF Connect SDK, which is used in the Bluetooth: Mesh chat sample.

Regards,
Terje

[starkAbhi]

Hi Terje,

tesc said:

Depending on what data you are going to send

 

HEX: 0x38000200030012

1byte+2byte+2byte+2byte

7 byte data being transmitted.

tesc said:

Otherwise you can make your own, vendor specific model.

How? Can you please share project file of custom message model?

I did not able to understand  Bluetooth: Mesh chat sample. Show me where and what i can modify to make given example as according to my Application requirement? 

Regards

Abhishek

[tesc]

Hi,

starkAbhi said:

7 byte data being transmitted.

How often are the tags transmitting this data?

starkAbhi said:

How? Can you please share project file of custom message model?

The chat model in the SDK is one such custom model.

The Creating a new model section of the nRF Connect SDK documentation contains an overview for developing vendor models, and a walk-through of the chat model implementation.

Regards,
Terje