Bluetooth and USB at the same time on nRF52840

RE: Bluetooth and USB at the same time on nRF52840

Jørgen Holmefjord — Mon, 06 May 2019 11:14:47 GMT

Have you debugged the application, to see if any error codes are reported? If this does not help, please post a new question where you describe your issue in more detail.

RE: Bluetooth and USB at the same time on nRF52840

shilpa — Mon, 06 May 2019 06:25:12 GMT

hello,

[quote userid="20698" url="~/f/nordic-q-a/23270/bluetooth-and-usb-at-the-same-time-on-nrf52840/91513"]There is a limitation when the softdevice is in use, the USB power event (detect plug/unplug) can't be used[/quote]

We also face the same issue.We are using sdk 15.2.0,nrf52840,s140, pca10056. In our application we found this issue. We need to use USB for retrieving data by using OTG .When we retrieve data more than one times (by inserting and removing the USB each time) after some attempts the device doesn't advertise any more and will never restart from its state. Could you figure out the solution for this issue?If so, please provide a suggestion.

If we disable softdevice when USB is connected and enable it after retrieving data via USB port, could it help in this advertising issue?

Regards,

Shilpa

RE: Bluetooth and USB at the same time on nRF52840

Don Schoppe — Sat, 30 Sep 2017 19:05:16 GMT

Nicolas, I just discovered this myself (SDK14) when trying to merge the the USB CDC ACM logic from the "peripherals/cli" example into the "ble_peripheral/ble_app_template" example. I want to use CLI/logging over CDC ACM when a user connects a USB cable to my "BLE peripheral" device.

As a quick test I tried to compile and run the CLI example (standalone) after re-defining USBD_POWER_DETECTION in main.c to "false". But that breaks the example it seems.

Is anybody actually using CLI/logging over USB CDC ACM together with the BLE SoftDevice?

Thanks!

RE: Bluetooth and USB at the same time on nRF52840

Nicolas Brunner — Wed, 16 Aug 2017 13:46:40 GMT

There is a limitation when the softdevice is in use, the USB power event (detect plug/unplug) can't be used. But the USB power status can still be polled with nrf_drv_power_usbstatus_get().

RE: Bluetooth and USB at the same time on nRF52840

endnode — Wed, 05 Jul 2017 20:37:13 GMT

Yes, that's how it should work.

RE: Bluetooth and USB at the same time on nRF52840

Benoît — Wed, 05 Jul 2017 14:38:14 GMT

Does it means that I can add a USB stack over a BT softdevice without facing compatibility issues ?

RE: Bluetooth and USB at the same time on nRF52840

RK — Wed, 05 Jul 2017 12:36:58 GMT

in what way do you think the USB driver is not compatible with the softdevice? All the Nordic drivers can be used with a softdevice.