USB Full speed communication with Windows

RE: USB Full speed communication with Windows

WaKo — Sun, 01 Aug 2021 23:53:28 GMT

Hi,

I got it.

Thank you !

RE: USB Full speed communication with Windows

Simonr — Fri, 30 Jul 2021 10:13:22 GMT

The nRFConnect for Desktop uses the SDC BLE connectivity firmware and the pc ble driver to communicate with the nRFConnect for Desktop. This thread already discuss and explain this thoroughly.

It's up to you what app you use to handle the data received on the computer from the Dongle.

Best regards,

Simon

RE: USB Full speed communication with Windows

WaKo — Fri, 30 Jul 2021 05:20:06 GMT

Thank you for your replay.

Dose nRF52840 dongle use the CLI USB backend when it communicate with "Bluetooth Low Energy" in nRF Connect for Desktop ?

https://devzone.nordicsemi.com/f/nordic-q-a/70833/throughput-calculation-with-wireshark

In the above, you said that if I use nRF Connect and nRF52840 dongle as BLE master I will not get maximum throughput.

But if nRF Connect and nRF52840 dongle use CLI USB backend, should it be possible ?

Best regards.

RE: USB Full speed communication with Windows

Simonr — Thu, 29 Jul 2021 09:05:13 GMT

Due to the summer vacation period we are currently understaffed, so delayed replies must be expected. I am sorry about any inconvenience this might cause.

We have a few cases covering the maximum throughput over USB already. This one seems to be most relevant, where my colleague Vidar has uploaded a modified version of our Throughput example using the CLI USB backend.

We've tested the USB MSC examples (that are writing zeroes to a RAM disk from a Linux host) to be able to write at speeds up to 4Mbps, so 1.4Mbps should not be problematic to reach using USB.

Best regards,

Simon