Not able to READ data - BLE_CENTRAL

RE: Not able to READ data - BLE_CENTRAL

kovidS — Tue, 04 Apr 2023 06:32:20 GMT

Hello,
The error has been resolved thankyou!

RE: Not able to READ data - BLE_CENTRAL

kovidS — Mon, 03 Apr 2023 08:02:26 GMT

Hello,
when using bt_bas_start_per_read_battery_level() this function i was getting Illegal use of the EPSR

error.
but when i was normal bt_gatt_read function i was able to read battery%. Can you please suggest me the some work queue example when the application is central, for implying the bt_gatt_read() funciton periodically.

RE: Not able to READ data - BLE_CENTRAL

Sigurd — Thu, 30 Mar 2023 13:44:38 GMT

[quote user="kovidS"]
I also wanted to know that how to periodically call read function to get data?[/quote]

You could e.g. use a Workqueue Thread

We use it e.g. here to do notifactions, https://github.com/nrfconnect/sdk-nrf/blob/main/samples/bluetooth/peripheral_hr_coded/src/main.c#L160

RE: Not able to READ data - BLE_CENTRAL

kovidS — Thu, 30 Mar 2023 06:23:38 GMT

Hello,
The issue is resolved with normal bt_gatt_read() function only. Actually i wasnot incrementing the value_handle so it was not calling the callback function and not reading and giving out the error.

I also wanted to know that how to periodically call read function to get data?

RE: Not able to READ data - BLE_CENTRAL

Sigurd — Wed, 29 Mar 2023 11:43:53 GMT

That is strange. Is this with the unmodified central_bas sample? And you use button 1 to trigger the bt_bas_read_battery_level() call ?

RE: Not able to READ data - BLE_CENTRAL

kovidS — Tue, 28 Mar 2023 13:59:30 GMT

Hello,
I have tried using the function bt_bas_read_battery_level() but I am keep getting the -16(EBUSY(mount device busy)) in return.

RE: Not able to READ data - BLE_CENTRAL

Sigurd — Mon, 27 Mar 2023 12:26:34 GMT

Hi,

We have a sample that shows you how to do this here: https://github.com/nrfconnect/sdk-nrf/tree/main/samples/bluetooth/central_bas

Use the function bt_bas_read_battery_level() to read the battery level