use nrf52840 dongle on Android

RE: use nrf52840 dongle on Android

Simonr — Fri, 05 Feb 2021 08:27:48 GMT

Hi again

I'm assuming what you're after is a HCI layer implemented over USB, correct? I asked around internally as well, and it seems to confirm my suspicions that we don't have this. I would suggest turning to Google/stackoverflow to look for this as we won't be able to help you with this.

Best regards,

Simon

UPDATE: Got a tip from one of my colleagues that (if the Android 11 device is able to communicate with a 3rd party HCI Controller over USB, this sample for a USB Bluetooth Dongle might be exactly what you need. I wasn't aware of it until just now.

RE: use nrf52840 dongle on Android

asaf — Thu, 04 Feb 2021 06:22:21 GMT

- I have nrf52840 dongle with usb firmware , I'm able to comunicate with it using the python ble-pc-driver-py library.

- i have raspberry pi 4 with Android 11 running application I crated to control BT devices running coded phy.

the RPI4 BLE have no coded phy support.

- I want to use the dongle I have that already have the firmware and I need Android library to interface with the dongle.

RE: use nrf52840 dongle on Android

Simonr — Wed, 03 Feb 2021 13:48:54 GMT

Could you provide som details as to how you are planning to connect the Dongle over USB to your Android device? Do you plan on using a hub or similar where you can plug your Android in to communicate with the Dongle? Seeing as you're planning on connecting to the Android device over USB, you should also take a look at our USB example projects, as you'll need some connectivity firmware on the nRF52840 Dongle to communicate with the Android, and combine this with a ble central application that can scan using Coded PHY.

Best regards,

Simon

RE: use nrf52840 dongle on Android

asaf — Wed, 03 Feb 2021 10:53:52 GMT

yes , I want to scan for coded phy devices in android device using the dongle connected by USB to the android devices

RE: use nrf52840 dongle on Android

Simonr — Wed, 03 Feb 2021 10:11:14 GMT

I'm struggling to understand what you mean by "using the Dongle in Android code". Can you try to explain what you want to do here. You want the Android to connect to the Dongle, correct? Do you want to "tell" the Dongle via the Android to start scanning using Coded PHY to detect the DK that is advertising over Coded PHY?

If I am understanding you correctly, please check out the ATT_MTU throughput example used in this blog post by Torbjørn for testing long range. This lets an nRF52 device switch between advertising and scanning, and what PHY to use. You will have to implement some way for the Android app to tell the Dongle to go to the scanning mode and to the Coded PHY.

Best regards,

Simon