Hi, I have two urgent issues about nrf52832:

RE: Hi, I have two urgent issues about nrf52832:

awneil — Sun, 07 Oct 2018 09:36:51 GMT

[quote userid="74223" url="~/f/nordic-q-a/38963/hi-i-have-two-urgent-issues-about-nrf52832"]1. Is it reasonable easy to get a stable throughput over 1Mbps at a 3 meters range?[/quote]

Note that this does also depend on the Central.

Phones can be unpredictable in the connection parameters they will allow - and often won't allow "maximal" settings ...

RE: Hi, I have two urgent issues about nrf52832:

big_johnson — Sun, 07 Oct 2018 07:00:58 GMT

Thanks！

RE: Hi, I have two urgent issues about nrf52832:

Jørgen Holmefjord — Mon, 01 Oct 2018 13:53:42 GMT

I did not check more than 20 ms of the transfer, but the CPU usage seems to be quite constant:

==== Current test configuration ====
Board role: tester
ATT MTU size: 247
Data length: 251
Connection interval: 320 units
Connection length ext: on
Preferred PHY: 2 Mbps
GAP event length: 400

[00:00:00.005,096] <info> app: Time: 6.376 seconds elapsed.
[00:00:00.005,126] <info> app: Throughput: 1315.82 Kbps.
[00:00:00.005,126] <info> app: =============================
[00:00:00.005,126] <info> app: Sent 1048712 bytes of ATT payload.

3658.86 µs spent in softdevice during 20 ms period checked, corresponding to 81.7% CPU availability.

RE: Hi, I have two urgent issues about nrf52832:

big_johnson — Thu, 27 Sep 2018 15:29:28 GMT

I think this data is interested by many many users.

RE: Hi, I have two urgent issues about nrf52832:

big_johnson — Thu, 27 Sep 2018 15:22:24 GMT

Thanks a lot for quick reply Jorgen！

Do you have the data about the situation of maximum throughput, that is, about 1.3Mbps ? Or could you help get that data?

Thanks again!

RE: Hi, I have two urgent issues about nrf52832:

Jørgen Holmefjord — Thu, 27 Sep 2018 12:35:53 GMT

Yes
I recently did a test on nRF52840 using the ATT MTU Throughput example. The numbers will be very similar on nRF52832, as it have the same CPU. Other configurations will give different results.

==== Current test configuration ====
Board role: tester
ATT MTU size: 247
Data length: 251
Connection interval: 15 ms
Connection length ext: on
Preferred PHY: 1 Mbps
GAP event length: 400

Total: 1079.58 µs spent in softdevice per 15 ms interval (92.8% available CPU)