How to get Bluetooth idle status

RE: How to get Bluetooth idle status

qjx — Thu, 24 Aug 2023 09:14:28 GMT

thank you very much

RE: How to get Bluetooth idle status

Hung Bui — Thu, 24 Aug 2023 09:02:39 GMT

Yes, correct. Even though the payload is empty there is still headers , CRC etc.

RE: How to get Bluetooth idle status

qjx — Thu, 24 Aug 2023 08:27:10 GMT

When no data is sent via Bluetooth, that is, when an empty packet is sent, is this also a radio activity？

RE: How to get Bluetooth idle status

Hung Bui — Thu, 24 Aug 2023 08:04:14 GMT

Hi,
I assume you were looking at this line ?

This is why you should use sd_flash_* api, so that the flash operation will be scheduled by the softdevice. It will wait until the radio is finished with the activity before it performs flash operations.

There is a "Radio notification signals" (see chapter 11) but it's to tell when the radio is active. The softdevice may do something else besides radio activity (calibration for example). So it's not suggested to use radio notification to access flash.

Using softdevice flash api is the way to go. You don't have to worry about if the radio is working when you call the function or not.

RE: How to get Bluetooth idle status

qjx — Thu, 24 Aug 2023 01:07:34 GMT

While the SDS specification says that flash cannot be written to while Bluetooth is working, we now want to find a flag bit or some other way to indicate whether Bluetooth is working. I would like to ask if there is such a flag bit.

RE: How to get Bluetooth idle status

Hung Bui — Wed, 23 Aug 2023 11:27:02 GMT

Hi,

When the softdevice is enabled, you should use the sd_flash_* api instead of accessing the NVMC directly.
Do you have one of our flash library , for example fstorage ? When you use fstorage and whtn the softdevice is enabled, you need to use nrf_fstorage_sd backend.