NRF52832: Concurrent BLE Connections Question

[NileshK]

I am using NRF52832 for my project.

 

Refer the following Softdevice and SDK versions. 

• Softdevice: S132_2.0.0-7.alpha
• SDK Version: 4.0.0-2.alpha

 

Question 1: Does the above versions support concurrent BLE connections?

 For Example:

• 1 Peripheral / N Central
• 1 Central / N Peripheral
• N Central / N Peripheral

 

NOTE: N is 20 max for S132.

 In my current project which uses the above mentioned Softdevice and SDK versions, we have 1 Peripheral device(NRF52832 Board) and 1 Central device( Smartphone)

 Configurations:

 #define CENTRAL_LINK_COUNT               0                                          /**<number of central links used by the application. When changing this number remember to adjust the RAM settings*/

#define PERIPHERAL_LINK_COUNT          1                                          /**<number of peripheral links used by the application. When changing this number remember to adjust the RAM settings*/

 

With this only 1 smart phone gets connected to the Peripheral (NRF52832 Board) at a time.

 

 For 1 Peripheral(NRF52832 Board) / 2 Central (Smartphone)

 

Question 2: With the below configuration, can we connect 2 smart phone to the Peripheral (NRF52832 Board) at a time?

 

#define CENTRAL_LINK_COUNT               0

#define PERIPHERAL_LINK_COUNT          2

 

I would appreciate if you provide your input on this.

 

Thank you.

Nilesh Khunte

[Joakim Jakobsen]

Hello Nilesh!

The SDK version you are working with are very very old.

I would highly recommend that you upgrade to one of the later releases or nRF5 SDK or nRF Connect SDK for new projects.

Br,
Joakim

[NileshK]

nRF5 SDK version:  v17.1.0 is the latest version?

nRF Connect SDK: v2.1.1 version is the latest version?

Where should i download the latest SDK version from?

What is the procedure to upgrade it?

How do I check, whether the current SDK is nRF SDK or nRF SDK for mesh?

Thank you

Nilesh Khunte

[Joakim Jakobsen]

Hi again. 

Do you already have an application based on the SDK/SD versions you mentioned in your original post?

SD 132 supports up to 20 concurrent connections. 

If you are starting a new project, I would recommend you to upgrade to the latest version of the SDK. 

NileshK said:

How do I check, whether the current SDK is nRF SDK or nRF SDK for mesh?

Do you want to use BLE Mesh? 

nRF5 SDK for Mesh is a standalone SDK (although it requires the nRF5 SDK), you can find more information here: 
https://infocenter.nordicsemi.com/topic/struct_sdk/struct/sdk_mesh_latest.html 

_____________

NileshK said:

nRF5 SDK version:  v17.1.0 is the latest version?

Yes, nRF5 SDK v.17.1.0 is the latest version.
You can find the documentation here.
The SDK can be downloaded here: https://www.nordicsemi.com/Products/Development-software/nRF5-SDK/Download?lang=en#infotabs 

NileshK said:

nRF Connect SDK: v2.1.1 version is the latest version?

Yes, NCS v.2.1.1 is currently the latest official release. 

You can find more information about the nRF Connect SDK here:  
https://www.nordicsemi.com/Products/Development-software/nRF-Connect-SDK 

Let me know if you have any further questions.

Br, 
Joakim

[NileshK]

Do you already have an application based on the SDK/SD versions you mentioned in your original post?

Answer: Yes, I have an application based on the SDK/SD version mentioned in my original post.

Upgrade to Latest Version:

I have downloaded nRF5 SDK v.17.1.0 version from the website. 

Can i take any project from the example folder(created in Keil IDE) and replace application from that example with my application created for the mentioned SDK/SD (meaning main.c file) and compile it

Is that right way to upgrade to the latest SDK/SD?

Thank you

Nilesh Khunte