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

[chianglin]

Hi,

I had study all of BLE example code in ".\nRF5_SDK_15.3.0_59ac345\examples\ble_peripheral" directory.

There have two solution after BLE advertising had time-out:

1. execute "ble_advertising_start()" again. --> Start next advertising.

2. execute "sleep_mode_enter()" --> The system will not work.

If I want keep the system alive (ex: keep sensor working and display status on LCD" and disable "BLE advertising".

Would you please give me a suggestion?

Thank you,

Chianglin

[Vidar Berg]

Hi Chianglin,

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

[chianglin]

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,Test.7z

[Vidar Berg]

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

[chianglin]

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,

[Vidar Berg]

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