Usefulness of the timer in example ble_app_uart

[Maxime]

Hi,

I'm testing the BLE_UART example : <InstallFolder>\examples\peripheral\ble_app_uart . For this, I use the nRF52840 with SDK 15.2 and s140 softdevice.

I would like to know what the timer_init() function is used for, or rather why this timer is used? I want to create a system with the lowest possible power consumption between connections (sleep mode). I would like to know if it is therefore possible to disable this timer by adapting the code.

Thank you in advance,

Best regards,

Maxime

[AndreasF]

Hi Maxime.

The timer is used for the Board Support Package (BSP), which is the bsp.c file.

Some examples, like the ble_app_uart example use BSP states instead of a fast assignment of LEDs to indicate states. In this way, examples can easily be tested on different boards, like the development board and the dongle. States are indicated in different ways depending on the hardware that is used. You can read more about this here.

- Andreas

[Maxime]

Hi Andreas,

Thank you for your time. I understand your answer.

The problem is that for the example "ble_app_uart" if I disable the timer, it is no longer possible to connect to the nRF5x !

I don't understand this...

Best regards,

Maxime

[AndreasF]

Hi Maxime.

I should also have said that the app_timer is also used for connections, I'm sorry I didn't say this also.

If you look at the initalization function for connection parameters (conn_params_init), you can see that you need a timer to be able to handle connections.

- Andreas

[Maxime]

Thank's !

I have now understood!

Thank you very much again