custom_board.h for sdk v12.2 and v13.0

[ogura]

In my nRF52832 base-board, I don't have any leds and buttons. I use Keil v5 and I used ble_app_uart_pca10040_s132. I copied pca10040.h as custom_board.h and replaced BOARD_PCA10040 with BOARD_CUSTOM in proprocessor symbol. when I removed led definitions from custom_board.h, I got the following compile error.

compiling bsp.c... ............\components\libraries\bsp\bsp.c(115): error: #20: identifier "m_app_ticks_per_100ms" is undefined

when I removed button definitions from custom_board.h, I got the following compile error.

compiling bsp_btn_ble.c... linking... ._build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol bsp_button_is_pressed (referred from bsp_btn_ble.o).

when I used sdk v12.1, I could complie successfully.

what is the right custom_board.h for no led/button custom board? how can I fix these problems in sdk v12.2 and v13.0?

[butch]

Can you get around the problem by keeping BOARD_PCA10040 and not trying to define a new custom_board.h? In other words, if your app knows there is no LED or button, and does not call any functions to use LED or button, then your app should compile and work. I don't think it will even link in any of the board support functions, since you don't call them.

[butch]

Or have you tried in pca10040.h changing LEDS_NUMBER 4 to LEDS_NUMBER 0 ? (and similarly for BUTTONS_NUMBER)

[ogura]

thanks. both works fine.

[Artem Efremov]

If your custom board does not have any buttons, then the problem could be resolved by setting LEDS_NUMBER to 0 in custom_board.h and wrapping content of bsp_btn_ble.c with

#if BUTTONS_NUMBER > 0
  // content of bsp_btn_ble.c
#endif // BUTTONS_NUMBER > 0

It seems to be a bug because functions in bsp_btn_ble.c always try to call functions from bsp.c which are not defined when BUTTONS_NUMBER is 0.