Throughput and long range demo

RE: Throughput and long range demo

Samiulhaq — Mon, 26 Sep 2022 07:24:17 GMT

Why the example is not designed for a Segger embedded studio?

RE: Throughput and long range demo

DL_November — Fri, 18 Dec 2020 05:32:28 GMT

I wonder what data is sent during this example...
Are the data sent a random signal or a specific data?

RE: Throughput and long range demo

Bhavya Mathukiya — Wed, 26 Feb 2020 12:46:19 GMT

How to enable DLE? I have nrf52840 and SDK: 16.0.0 Soft Device: S140

RE: Throughput and long range demo

homeslashbjrn — Wed, 13 Dec 2017 18:14:37 GMT

Hey,

when I run this example from SDK 14.2.0 on two nRF52840 DKs with (att_mtu: 23, conn_interval: 7.5, dle: on, phy: 1M) I am getting a throughput of nearly 86 kbps. My calculated throughput is (1000ms/7.5ms) * 20bytes * 8bits/byte = 21,3 kbps and assuming a number of 4 transferred packets per connection interval this gets very close to the measured value with 85.3kbps. Now one question: Why should I assume 4 and not 6 transferred packets? The theoretical throughput could also be calculated by taking the empty and full loaded packet transmission time + the interframe spacing T_IFS into account and then calculating the maximum amount of packet that could be transmitted in one connection interval. This will be higher than 6, which is stated in the SoftDevice specifications. Is this a result of the Connection Length Extension?

As the Data Length Extension was set to "on", the on-air packet size will be set to ATT_MTU size + header size (= 27 bytes), but why is the throughput increased (250 kbps) when turning DLE "off" and keeping all other parameters the same?

Thanks and regards, Björn

RE: Throughput and long range demo

ovrebekk — Tue, 05 Dec 2017 11:41:58 GMT

That is correct.

You can use the ble_app_att_mtu_throughput example to test the throughput between two Nordic kits: \nRF5_SDK_14.2.0\examples\ble_central_and_peripheral\experimental\ble_app_att_mtu_throughput

Best regards
Torbjørn

RE: Throughput and long range demo

djqtsg — Thu, 30 Nov 2017 03:52:11 GMT

Hi,

There is similar sample application in SDK 14. I can also try it to test throughput, right?

RE: Throughput and long range demo

greyed — Mon, 27 Nov 2017 18:29:24 GMT

Hi Mohammad,

What actually is the data being sent? And how would I go about setting my own custom data with this service?

Thanks for your help, Greyed

RE: Throughput and long range demo

Mohammad Afaneh — Mon, 20 Nov 2017 23:17:13 GMT

Daniel,

I had the same issue and spent a lot of time trying different solutions to get the menu to show up properly in macOS. In the end, I found that the best solution is to use the following program:

ZOC Terminal.

Hope this helps.

-Mohammad

Novel Bits, LLC

RE: Throughput and long range demo

ovrebekk — Thu, 16 Nov 2017 10:29:59 GMT

Hi Pranav

Can I use the parameter settings for BLE 5 or 4.2, (like data length extension,Preferrec PHY) that you use in this project in Nordic UART service for my application.

You can extend the ble_app_uart example to take advantage of these features, yes.

You should change the UUID of the service if you are using it in a different way, but that is a simple as generating a random one online.

Best regards
Torbjørn

RE: Throughput and long range demo

Nicolas Brunner — Tue, 14 Nov 2017 12:52:28 GMT

I had no problem using this program with JLinkRTTClient but it was with windows. Don't forget to put NRF_LOG_BACKEND_SERIAL_USES_UART at 0 and NRF_LOG_BACKEND_SERIAL_USES_RTT at 1 when using RTT.

RE: Throughput and long range demo

Daniel — Mon, 13 Nov 2017 13:54:53 GMT

Hey, I flashed the DK correctly (getting Log events), but how can I connect the Terminal to the Board now, to see the menue?

I'm using macOS so Tera Term or Putty is not possible :/

I tried it with the macOS Terminal and JLink but nothing happens. Somebody got experience and solutions with macOS?

RE: Throughput and long range demo

pranavsk1994 — Thu, 09 Nov 2017 00:11:10 GMT

Hi, I had a quick question, Can I use the parameter settings for BLE 5 or 4.2, (like data length extension,Preferrec PHY) that you use in this project in Nordic UART service for my application.

RE: Throughput and long range demo

Stanley — Tue, 03 Oct 2017 01:49:59 GMT

Hello,I bought a piece of LS027B7DH01 LCD from Mourser.Can you tell me how to connect to PCA10056?

Thank you

RE: Throughput and long range demo

Mohammad Afaneh — Mon, 11 Sep 2017 15:50:34 GMT

The Sharp LS027B7DH01 display doesn't seem to be in stock anywhere online! Are there other alternatives? What should I look out for when choosing one?

Thanks!

RE: Throughput and long range demo

trex — Thu, 22 Jun 2017 12:56:29 GMT

Hello,

I have tried the example but I have a pretty bad troughput of 262Kbps... I'm using a nRF52840-Preview-DK and a nRF51832. My config:

APP:INFO:Time: 31.993 seconds elapsed. APP:INFO:Throughput: 262.23 Kbps. APP:INFO:=============================

APP:INFO:Sent 1048712 bytes of ATT payload.

APP:INFO:Retrieving amount of bytes received from peer...

APP:INFO:Peer received 1048712 bytes of ATT payload.

APP:INFO:Disconnecting...

APP:INFO:Current test configuration:

APP:INFO:===============================

APP:INFO:ATT MTU size: 247

APP:INFO:Conn. interval: 6 units (1.25 ms per unit).

APP:INFO:Data length extension (DLE): ON

APP:INFO:Preferredy PHY: 2 Mbps

May be something wrong in the configuration? (I have all tried)

Do you have an idea? Thank you,