Hi all,
I'm working on a custom board based on the nRF9160 and using nRF Connect SDK v3.0.2. We’ve developed the board in-house and integrated the npm1300 PMIC as part of our power management solution.
Everything is working well overall, but I’m facing an issue with GPIO buttons. Specifically:
- I use the first two GPIOs from the npm1300 as buttons.
- I also have five other buttons directly connected to GPIOs on the nRF9160, and those work fine.
- I use GPIO 0.26 from the nRF9160 as host-int-gpio property
However, when I declare the two npm1300-based buttons in the devicetree, I get this error during application startup:
[00:00:00.382,568] <err> gpio_keys: Could not set gpio callback [00:00:00.382,598] <err> gpio_keys: Pin 5 interrupt configuration failed: -88
Here is the relevant devicetree snippet for the npm1300:
npm1300_pmic: npm1300@6b {
compatible = "nordic,npm1300";
reg = <0x6b>;
pmic-int-pin = <4>;
host-int-gpios = <&gpio0 26 GPIO_ACTIVE_HIGH>;
ship-to-active-time-ms = <1008>;
long-press-reset = "one-button";
status = "okay";
npm1300_gpio: npm1300_gpio {
compatible = "nordic,npm1300-gpio";
status = "okay";
gpio-controller;
#gpio-cells = <2>;
ngpios = <5>;
};
npm1300_regulators: regulators {
compatible = "nordic,npm1300-regulator";
status = "okay";
npm1300_buck1: BUCK1 {
status = "disabled";
};
regulator_3v0: BUCK2 {
regulator-min-microvolt = <3000000>;
regulator-max-microvolt = <3000000>;
regulator-init-microvolt = <3000000>;
regulator-boot-on;
regulator-always-on;
};
// LDO1
regulator_display: LDO1 {
regulator-initial-mode = <NPM1300_LDSW_MODE_LDSW>;
regulator-boot-on;
status = "okay";
};
// LDO2 is not used
npm1300_ldo2: LDO2 {
status = "disabled";
};
};
npm1300_charger: charger {
compatible = "nordic,npm1300-charger";
term-microvolt = <4200000>;
term-warm-microvolt = <4000000>;
current-microamp = <400000>;
term-current-percent = <10>;
dischg-limit-microamp = <1000000>;
vbus-limit-microamp = <500000>;
thermistor-ohms = <10000>;
thermistor-beta = <3435>; //3380
charging-enable;
};
npm1300_leds: leds {
compatible = "nordic,npm1300-led";
nordic,led0-mode = "charging";
nordic,led1-mode = "host";
nordic,led2-mode = "host";
};
npm1300_buttons: buttons {
compatible = "gpio-keys";
status = "okay";
};
};
And here is the devicetree definition for the buttons : buttons: buttons {
compatible = "gpio-keys";
debounce-interval-ms = <100>;
button0: button_0 {
label = "bt0-enter";
gpios = <&gpio0 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
zephyr,code = <INPUT_KEY_ENTER>;
};
button1: button_1 {
label = "bt1-up";
gpios = <&gpio0 1 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
zephyr,code = <INPUT_KEY_UP>;
};
button2: button_2 {
label = "bt2-left";
gpios = <&gpio0 2 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
zephyr,code = <INPUT_KEY_LEFT>;
};
button3: button_3 {
label = "bt3-down";
gpios = <&gpio0 3 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
zephyr,code = <INPUT_KEY_DOWN>;
};
button4: button_4 {
label = "bt4-right";
gpios = <&gpio0 4 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
zephyr,code = <INPUT_KEY_RIGHT>;
};
button5: button_5 {
label = "bt5";
gpios = <&npm1300_gpio 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
zephyr,code = <INPUT_KEY_1>;
};
button6: button_6 {
label = "bt6";
gpios = <&npm1300_gpio 1 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
zephyr,code = <INPUT_KEY_2>;
};
};
I'm really not sure what’s going wrong here. Has anyone encountered something similar when using npm1300 GPIOs as input buttons? Any ideas or pointers would be greatly appreciated!
Thanks in advance!
