Running the usbd_ble_uart_freertos example on custom board with no buttons

[Erland]

Code example: nRF5_SDK_15.2.0_9412b96\examples\peripheral\usbd_ble_uart_freertos

Board: custom board with nRF52840

What are the fastest and easiest steps to make this example work on a buttonless board?

I do not need the Bluetooth functionality to work at this time, only USB and freertos.

Compiling the project after including my custom_board.h file throws up some button related errors from bsp.c which I circumvented by defining BSP_SIMPLE in the preprocessor.

Now the bsp_btn_ble.c file is giving me trouble, as it is using button defines from bsp.c that are omitted when BSP_SIMPLE is defined.

The entire purpose of this file is clearly to define how the buttons interact with the Bluetooth functionality, and it is understandable that this doesn't work on a buttonless board.

Since I currently do not need BT functionality I was wondering if there is some simple config I can do to omit these files without other (non BT) parts of the example breaking down.

I realize I can manually add the USB library to one of the blinky_freertos examples, but I am hoping there is a faster way.

[Jørgen Holmefjord]

Hi,

bsp_btn_ble is only used for configuring button for wakeup from system off sleep mode in that example. If you do not have any buttons, you can comment out line 367-368 in main.c and exclude the source file bsp_btn_ble.c from your project.

//    err_code = bsp_btn_ble_sleep_mode_prepare();
//    APP_ERROR_CHECK(err_code);

I would then recommend that you do not enter system off sleep mode, or configure an alternative wakeup source. Otherwise you will have to trigger a reset or disconnect power to wake from system off mode.

Best regards,
Jørgen

[Erland]

Thank you, this was exactly what I was looking for!

It was all I needed to get the example to compile.

Regards,

Erland