Error L6218E: Undefined symbol

[littlemingsmw]

Hi,

When I migrated the nRF51 project to nRF52, I got 67 L6218E errors. I am not sure how to solve that kind of errors because I already added the related .c file to group 'Applications'

The errors is shown below, I just post 2 of the errors.

._build\nrf52832_xxaa_s132.axf: Error: L6218E: Undefined symbol bsp_board_button_idx_to_pin (referred from bsp.o).

._build\nrf52832_xxaa_s132.axf: Error: L6218E: Undefined symbol bsp_board_button_state_get (referred from bsp.o).

Please give some ideas. Thank you.

Best regards,

SM

[littlemingsmw]

More information which I tried is listed.

1. I check a sdk_config.h, "#define bsp_btn_ble_enable 1" is observed. So, I think the bsp_board_button should set to enable.
2. I also check those .c files, it is same as the SDK14 example, ble_app_bsp.
3. I am using Keil 5, SDK 14 s132 and nRF52 for development.