Timer and BLE not working together for nRF52832

RE: Timer and BLE not working together for nRF52832

Nguyen Hoan Hoang — Tue, 03 Jul 2018 07:07:41 GMT

Yes, RTC0 is used by SD, RTC1 by SDK app_timer. RTC2 is free for you.

it looks like you are disabling timer before enable. The line is ASSERT(..).

Use the debugger to check the call stack to find where it happened

RE: Timer and BLE not working together for nRF52832

SK — Tue, 03 Jul 2018 07:04:07 GMT

Okay, problem was with some other part of the code that i forgot to comment out (it was using some other timer). BLE and timer driver are working perfectly.

Thanks @Nyugen Hoan Hoang for looking into it. Appreciate your thoughts and suggestions :)

RE: Timer and BLE not working together for nRF52832

SK — Tue, 03 Jul 2018 06:36:20 GMT

I tried using app_timer as well (RTC1 instance) since i am under the assumption that RTC0 is used by SD and rest are free to use.

But, it is again throwing me the same error as above. This gets me curious, if BLE itself is using some kind of timer internally? and it is conflicting with the timer that i am using somehow?

RE: Timer and BLE not working together for nRF52832

SK — Tue, 03 Jul 2018 03:35:46 GMT

Once connected, it throws me this error:

<warning> nrf_sdh_ble: RAM starts at 0x20002A68, can be adjusted to 0x20002760.
<warning> nrf_sdh_ble: RAM size can be adjusted to 0xD8A0.
<error> ble_gatt: sd_ble_gap_data_length_update() (request) on connection 0x0 returned unexpected value 0x13.
<info> app: Connected
<info> app: Data len is set to 0x3D(61)
<error> app: ERROR 3735928559 [Unknown error code] at zz_path\nordic\nrf52\nRF5_SDK_14.2.0_17b948a\components\drivers_nrf\timer\nrf_drv_timer.c:168

RE: Timer and BLE not working together for nRF52832

Nguyen Hoan Hoang — Tue, 03 Jul 2018 03:30:33 GMT

What exactly was the error you are getting ?

RE: Timer and BLE not working together for nRF52832

SK — Tue, 03 Jul 2018 03:27:53 GMT

I am using normal Timer driver (Timer 2 instance) as of now.

RE: Timer and BLE not working together for nRF52832

Nguyen Hoan Hoang — Tue, 03 Jul 2018 03:22:16 GMT

Which timer are you using. If Low Freq Timer (RTC) then only timer 2 is available (0, & 1 are used by SD and SDK). You can also try to use app_timer instead.