Keep system alive after BLE advertising time-out and stop advertising in nRF52832

RE: Keep system alive after BLE advertising time-out and stop advertising in nRF52832

Vidar Berg — Tue, 24 Mar 2020 13:19:52 GMT

The Softdevice use TIMER0. TIMER1 is available to the application.

RE: Keep system alive after BLE advertising time-out and stop advertising in nRF52832

chianglin — Tue, 24 Mar 2020 13:18:28 GMT

Hi,

Thank you for your answer.

I use TIMER0 to trigger "battery_level_meas_timeout_handler()" and "linklight_timeout_handler()". but SoftDevice is using TIMER1. How can I make sure which timer is used for SAADC Sample?

In my program, when on_adv_evt() had been trigger when advertising is time-out, and I didn't "advertising again" or "enter sleep mode". How can keep SAADC sample work?

Thank you,

RE: Keep system alive after BLE advertising time-out and stop advertising in nRF52832

Vidar Berg — Mon, 23 Mar 2020 08:14:33 GMT

Hi,

You were using TIMER0 to trigger SAADC sampling. The problem is that this timer instance is already reserved and used by the Softdevice.

An overview of which peripherals are reserved to the Softdevice can be found here: https://infocenter.nordicsemi.com/topic/sds_s112/SDS/s1xx/sd_resource_reqs/hw_block_interrupt_vector.html

RE: Keep system alive after BLE advertising time-out and stop advertising in nRF52832

chianglin — Fri, 20 Mar 2020 14:56:29 GMT

Hi,

Please find the attach file.

When BLE advertising is time-out, main-loop (line 943 to 945 in main.c) is still alive, but saadc_callback() will not execute anymore.

How can I do, if I want keep "saadc_callback()" function alive.

Thank you,devzone.nordicsemi.com/.../Test.7z

RE: Keep system alive after BLE advertising time-out and stop advertising in nRF52832

Vidar Berg — Fri, 20 Mar 2020 11:48:07 GMT

Hi Chianglin,

It sounds like it should work as intended if you just remove the call to sleep_mode_enter()?

RE: Keep system alive after BLE advertising time-out and stop advertising in nRF52832

awneil — Thu, 19 Mar 2020 13:59:33 GMT

[quote userid="34970" url="~/f/nordic-q-a/59291/keep-system-alive-after-ble-advertising-time-out-and-stop-advertising-in-nrf52832"] execute "sleep_mode_enter()" --> The system will not work.[/quote]

Of course it still works - but you need to wake it up!