when I work on dk. I need to use some empty GPIOs (Not LED and button) .
for examples. P0.04 is connected to nothing in DK. I want to connect it to another pin P1.05 on another DK.
in nrf52833dk_nrf52833.dts, the GPIO is defined like this:
arduino_header: connector {
compatible = "arduino-header-r3";
#gpio-cells = <2>;
gpio-map-mask = <0xffffffff 0xffffffc0>;
gpio-map-pass-thru = <0 0x3f>;
gpio-map = <0 0 &gpio0 3 0>, /* A0 */
<1 0 &gpio0 4 0>, /* A1 */
<10 0 &gpio1 5 0>, /* D4 */
};
in my project directory. there is a file :
nrf52833dk_nrf52833.overlay
&pinctrl {
spi_master_default: spi_master_default {
group1 {
psels = <NRF_PSEL(SPIM_SCK, 0, 31)>,
<NRF_PSEL(SPIM_MOSI, 0, 30)>,
<NRF_PSEL(SPIM_MISO, 0, 29)>;
};
};
};
my_spi_master: &spi3 {
compatible = "nordic,nrf-spim";
status = "okay";
pinctrl-0 = <&spi_master_default>;
pinctrl-1 = <&spi_master_sleep>;
pinctrl-names = "default", "sleep";
cs-gpios = <&gpio0 28 GPIO_ACTIVE_LOW>;
reg_my_spi_master: spi-dev-a@0 {
reg = <0>;
};
};
to add the new GPIO define. I add code like this:
test_button: test_button {
foo-gpios = <&gpio1 5 GPIO_ACTIVE_LOW>,
<&gpio0 4 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
};
this failed to build.
how can I add such GPIO define?
thanks
