Integrating mesh and UART together on nRF52840

[jaya]

Hello,

I have been working on ble_app_uart_coexist to achieve the integration of uart and mesh on nRF52840, but I learnt that nRF52840 does not support this example.  

I am using Segger Embedded Studio, nRF52840, PCA10056, nRF_SDK_15.2.0 and now I am looking to add ble_app_uart into light-switch (from nRFSDKforMesh310src) example or vice -versa.

Can you please assist me that which way it should be easy to implement and how to integrate both the examples?

[Joakim Jakobsen]

Hi. 

You can take a look at this post on devzone: 
https://devzone.nordicsemi.com/f/nordic-q-a/29108/how-to-add-mesh-into-nrf5-sdk-v14-1-v15-ble-application 

Best regards, 
Joakim

[jaya]

Ok, I ll work on it. 

But can I try it on our version of nRF SDK (nRF_SDK_15.2.0) and Mesh (nRFSDKforMesh3.1.0) ? 

[Joakim Jakobsen]

Hi. 

I haven't tried it using the nRF5 SDK for Mesh v.3.1.0 and nRF5 SDK v.15.2.0 but I don't think there should be any major differences. 

If you're stuck on something, you are welcome to post another question and we'll do our best to help you. 

Best regards, 
Joakim

[jaya]

Hi Joakim,

As per your link provided in the above post, I have tried ble_app_uart_mesh for SDK v14.2 and Mesh v1.0, on nRF52840. 

I added the necessary files and made certain alterations after which I was able to build the project, but during debugging I am getting following errors:

<error> nrf_sdh_ble: sd_ble_cfg_set() returned NRF_ERROR_INVALID_PARAM when attempting to set BLE_GAP_CFG_ROLE_COUNT.

<warning> nrf_sdh_ble: RAM starts at 0x20002A18, can be adjusted to 0x20003758.

<warning> nrf_sdh_ble: RAM size can be adjusted to 0x3C8A8.

<error> nrf_sdh_ble: sd_ble_enable() returned NRF_ERROR_NO_MEM.

<error> app: ERROR 4 [NRF_ERROR_NO_MEM] at C:\Users\snowm-test\Desktop\nrf_older\nRF5_SDK_14.2.0_17b948a\examples\ble_peripheral\ble_app_uart_mesh\main.c:851

Do u know how to solve these?
 

[jaya]

Hi Jakobsen,

I am able to remove all these errors, but I am unable to see the device (nRF52840) in nRF Mesh app. Whereas, I can see the device in nRF Connect and nRF UART.

But I am unable to understand that why the device is not advertising in nRF Mesh app.  

[Joakim Jakobsen]

Hi. 

I'm glad you were able to get rid of the errors. 

The reason that you aren't seeing the device in the nRF Mesh app is probably cause it is advertising as a BLE device. The nRF Mesh app will only pick up devices that is broadcasting as a unprovisioned node. 

Best regards, 
Joakim.