zephyr gpio interrupt not fireing

[drahnr]

I just tried the Button example on the nrf52-dk development board, and the interrupt for the defined button GPIO does not seem to *trigger

Zephyr 1.8.0 (fcb9144dc git)

make BOARD=nrf52_pca10040

and the example under

samples/basic/button/src/main.c which explicitly states support for the nrf52-dk dev board.

I am not exactly sure what is wrong, the subset of GPIO related options are:

 CONFIG_GPIO_AS_PINRESET=y
 CONFIG_GPIO=y
 # CONFIG_GPIO_DW is not set
 # CONFIG_GPIO_SCH is not set
 # CONFIG_GPIO_MMIO32 is not set CONFIG_GPIO_NRF5=y
 CONFIG_GPIO_NRF5_P0=y
 CONFIG_GPIO_NRF5_P0_DEV_NAME="GPIO_0"
 CONFIG_GPIO_NRF5_PORT_P0_PRI=1
 # CONFIG_SPI_CS_GPIO is not set

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According to the function sheet, P0.13 which is SW0 on the nrf52dk has no alternate functionality www.zephyrproject.org/.../nrf52_pca10040.html

[Jørgen Holmefjord]

Are you seeing any output on the UART at all? I tested the same example, with same version of Zephyr and I get one interrupt when I push button 1 on the nRF52 DK (PCA10040).

[drahnr]

Addition to the comment:

I think the problem here was related to JLinkExe preventing a proper reset with nrfjprog tools and thus the button example never started. My own application only occasionally worked due to the fact that PULL_UP config was missing (not sure about that).

It is apparently reproducible for some people, see my ticket at zephyr's jira:

jira.zephyrproject.org/.../ZEP-2578