RE: Maximum throughput nRF5340

Elfving — Wed, 14 Aug 2024 08:51:33 GMT

Sounds good Vinu.

Btw, we generally don't close cases here unless you state that you've found a solution or "verify" an answer.

Regards,

Elfving

RE: Maximum throughput nRF5340

VinuGopalakrishnan — Wed, 14 Aug 2024 06:52:41 GMT

Thanks Elfving. Please dont close the thread. I will get back to you soon after some testing.

RE: Maximum throughput nRF5340

Elfving — Mon, 12 Aug 2024 13:18:26 GMT

Hello Vinu,

Have you had a look at the BLE throughput test sample? I think that would be a good starting point.

[quote user=""]What is the maximum supported value for packets per connection event?[/quote]

Could you expand a bit on this part?

[quote user=""]If i increase connection interval to 400ms, can i increase packets per interval also accordingly?[/quote]

That depends on the host. If using a phone is your end goal, then you should investigate what limitations that is giving you. Some might only allow data tramission for 100ms, even though you have connection interval of 400ms. And some limit the number of packets (There used to be a limitation of 6 packets for iOS/Android a long time ago).

[quote user=""]

2. As we have bulk data transfer of around 64 MB( full day data), i guess "Send notification" method would be the best way to achieve max thoughput ? Is there anything else to take care of to achieve the same?

[/quote]

Yes, send notification method should be used.

[quote user=""]

3. How to calculate the approximate time taken for 64 MB data transfer to a central device assuming ideal conditions? In this case it would be (64MB * 8) /1mbps = 512 seconds ?

[/quote]

Unfortunately this isn't that straight forward. You might be right in that you can't really achieve 2M in nRF5340 for some specific reason related to 53 (I haven't really checked/updated myself on this part). But you would typically get something like 700kbps and 1.2-1.3mb in practice (for a 1M and 2M PHY respectively), due to overhead and packetloss.

For more info, have a look here and here.

Regards,

Elfving

RE: Maximum throughput nRF5340

helsing — Wed, 07 Aug 2024 13:16:53 GMT

Hi Vinu,

I will look into this and get back to you.

Regards,

Håkon