nRF52840 BLE advertising issue

[ramachandra]

Hi,

   We are developing the BLE product based based on the nrf52840 Chipset and we are facing below problem while testing in the field.

    During our development we have come across the scenario where the BLE chip suddenly stop advertising after Some days for testing.

    This doesn’t happen every time but randomly it stops working and there is no way to discover the device. The only solution to make it to advertise its name is to program it again.

    Your timely support is appreciated to resolve the issue, or let us know if similar issue is faced by anyone in the forum.

Regards,

Ram

 

 

  

[Jared]

Hi,

This doesn’t happen every time but randomly it stops working and there is no way to discover the device. The only solution to make it to advertise its name is to program it again.

1.  Does a reset help?
2. Have you checked that the application isn't asserting i.e in a error handler?
3. Are you using a watchdog?
4. What SDK and Softdevice version are you using? 

regards

Jared 

[ramachandra]

Hi Jarad,

  Could you please suggest the latest nRF52840 SDK and suitable proxy Mesh APP which can be used so that we can try it once and check it out if the problem still persist.

We need the proxy mesh app which support configuration of Generic On Off server and Generic On Off Client in the single Provisioning APP as shown below.

Reagrds,

Ram

 

[Jared]

Hi,

I'm still not sure whether this is related to a Mesh or Ble device. If it's indeed a Mesh device, are you having the issue before or after the node has been provisioned? 

ramachandra said:

Could you please suggest the latest nRF52840 SDK and suitable proxy Mesh APP

Our mesh app is called nRF Mesh, you can find it both in App store and Google Play. 

best regards

Jared 

[ramachandra]

Hi Jarad,

 We are using the nRF52840 chip for application where it transfer the configuration data on the Mesh network to the other nodes.

We are able to configure the device as proxy node and transfer the information between the nodes when configured as both server and client model.

But the problem is the reliability of data reception is not consistent.  ex if we try to transfer the data from node 1 around 10 times the  node 2 will receive the data only 8 times and another 2 times data will be missed out. 

Please let me know if you need any more information. 

Regards,

Ram

[Jared]

Hi,

How does your mesh network look like? Is it many hops in the network between node 1 and node 2? Could you elaborate a bit more on your app, is it from a SDK example? What data do you send and which model are you using?

regards

Jared

[ramachandra]

Hi Jarad,

  We have developed our own BLE application which interacts with the PIC micro-controller through UART Port. The  micro-controller collect the data and send to the BLE chip which transmits it on the mesh so that the other similar device receive that data fro processing.

We are using Generic On OFF Client and Generic On OFF server model for transferring the data.

In Our mesh network we have multiple node say around 5 which is in star topology. 

Regards,
Ram 

   

[Jared]

Hi,

Have you checked that the data has actually been collected by the nRF through UART? Could you try to increase number of re-transmits, and consider using reliable transfer so lost packets will be resent.

regards

Jared