timer dislabled after using BLE Radio [SOLVED]

[Yann]

Hello,

I have a problem with app_timer.

My program need to use BLE UART for about 15 second then switch for just RADIO after.

To do so, I enable the ble stack as the ble_app_uart example in the ble_peripheral folder,  and set an app_timer as a single shot with a timeout of 15 second.

On timeout, I disable the soft device with nrf_sdh_disable_request() and i start my radio communication as in the radioexample int the peripheral folder.

On the side, I have a timer for blinking a led, but when I disable soft device, this timer stop.

How to deactivate the ble stack or softdevice to use radio and continue using app_timers?

[Vidar Berg]

Hello,

Are you using the clock driver in your code? The clock driver will release the 32K clock source used by the RTC/app timer when it receives a Softdevice disable request and if the Softdevice only requested the clock source. In that case, you can fix this by calling nrf_drv_clock_lfclk_request(). That informs the driver that's not only the Softdevice that relies on this clock source. 

[Yann]

Thanks for your quick response.

The call to nrf_drv_clock_lfclk_request() solved the problem. I was indeed using the clock initialized by the soft device.

The program now work as intended.