no device npm1300_ek (one button sample) with nRF52 DK on I2C Bus

[nRF52_DK_usr]

I try to get the one button sample to work. There were several details missing to be able to compile and run this sample, which was very frustrating. After editing/updating the

prj.conf: CONFIG_I2C=y

CMakeLists.txt: set(SHIELD npm1300_ek)

nrf52dk_nrf52832.overlay:

 #include <zephyr/dt-bindings/pinctrl/nrf-pinctrl.h>

 &i2c1 {
 status = "okay";
 pinctrl-0 = <&i2c1_default>;
 pinctrl-1 = <&i2c1_sleep>;
 pinctrl-names = "default", "sleep";
 clock-frequency = <I2C_BITRATE_STANDARD>; 
 //clock-frequency = <10000>;
 };
 
 &i2c1_default {
 group1 {
 psels = <NRF_PSEL(TWIM_SDA, 0, 26)>,
 <NRF_PSEL(TWIM_SCL, 0, 27)>;
 bias-pull-up;
 };
};

&i2c1_sleep {
 group1 {
 psels = <NRF_PSEL(TWIM_SDA, 0, 26)>,
 <NRF_PSEL(TWIM_SCL, 0, 27)>;
 low-power-enable;
 };
};

My zephyr.dts i2c1 snippet:

/* node '/soc/i2c@40004000' defined in zephyr/dts/arm/nordic/nrf52832.dtsi:172 */
		i2c1: i2c@40004000 {
			#address-cells = < 0x1 >;      /* in zephyr/dts/arm/nordic/nrf52832.dtsi:181 */
			#size-cells = < 0x0 >;         /* in zephyr/dts/arm/nordic/nrf52832.dtsi:182 */
			reg = < 0x40004000 0x1000 >;   /* in zephyr/dts/arm/nordic/nrf52832.dtsi:183 */
			interrupts = < 0x4 0x1 >;      /* in zephyr/dts/arm/nordic/nrf52832.dtsi:184 */
			easydma-maxcnt-bits = < 0x8 >; /* in zephyr/dts/arm/nordic/nrf52832.dtsi:185 */
			zephyr,pm-device-runtime-auto; /* in zephyr/dts/arm/nordic/nrf52832.dtsi:187 */
			compatible = "nordic,nrf-twi"; /* in zephyr/boards/nordic/nrf52dk/nrf52dk_nrf52832.dts:188 */
			status = "okay";               /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/npm13xx_one_button/build/npm13xx_one_button/zephyr/boards/nrf52dk_nrf52832.overlay:9 */
			pinctrl-0 = < &i2c1_default >; /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/npm13xx_one_button/build/npm13xx_one_button/zephyr/boards/nrf52dk_nrf52832.overlay:10 */
			pinctrl-1 = < &i2c1_sleep >;   /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/npm13xx_one_button/build/npm13xx_one_button/zephyr/boards/nrf52dk_nrf52832.overlay:11 */
			pinctrl-names = "default",
			                "sleep";       /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/npm13xx_one_button/build/npm13xx_one_button/zephyr/boards/nrf52dk_nrf52832.overlay:12 */
			clock-frequency = < 0x186a0 >; /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/npm13xx_one_button/build/npm13xx_one_button/zephyr/boards/nrf52dk_nrf52832.overlay:13 */
		};

with claudes assistance/support i got it to compile and run. But an i2c scan i2c0 shows no device at all.

What minimal required steps/configuration have to setup to get I2C enabled and detect devices on the bus should be?

Trying with the nrf-connect (Ubuntu) Linux-Desktop app (2x USB -C, 1x LiPo Battery) i get NPM detected, the LiPo Battery to and can change parameters for ex. the LED's live, so the BOARD is working.

Any support/hint/help is appreciated.

[Håkon Alseth]

Hi,

 

You should not need to alter anything when compiling the example:

https://docs.nordicsemi.com/bundle/ncs-3.3.0/page/nrf/samples/pmic/native/npm13xx_one_button/README.html

 

Please note that the "npm1300_ek" shield uses i2c0 on the nrf52dk, and not i2c1.

Same goes for the zephyr sample:

https://docs.nordicsemi.com/bundle/ncs-3.3.0/page/zephyr/samples/shields/npm13xx_ek/index.html#npm13xx_ek

Here you need to set the shield parameter (as you do in CMakeLists.txt):

https://docs.nordicsemi.com/bundle/ncs-3.3.0/page/zephyr/samples/shields/npm13xx_ek/index.html#building_and_running

 

Kind regards,

Håkon

[nRF52_DK_usr]

Hi,

editing an example was my fault. But Using I2c0 is no difference. Tried with the original sample npm1300.overlay.

I additonally enabled the shell in the prj.conf:

CONFIG_PRINTK=y

CONFIG_LOG_CMDS=y

CONFIG_I2C_LOG_LEVEL_DBG=y

CONFIG_SHELL=y

CONFIG_LOG=y

CONFIG_UART_CONSOLE=y

CONFIG_EARLY_CONSOLE=y

CONFIG_I2C_SHELL=y

The result of >device list< is:

uart:~$ device list
devices:
- clock@40000000 (READY)
  DT node labels: clock
- gpio@50000000 (READY)
  DT node labels: gpio0
- uart@40002000 (READY)
  DT node labels: uart0 arduino_serial
- i2c@40003000 (READY)
  DT node labels: i2c0 arduino_i2c
- pwm@4001c000 (READY)
  DT node labels: pwm0
- pmic@6b (DISABLED)
  DT node labels: npm1300_ek_pmic
- gpio-controller (DISABLED)
  DT node labels: npm1300_ek_gpio
- regulators (READY)
  DT node labels: npm1300_ek_regulators
- LDO2 (DISABLED)
  DT node labels: npm1300_ek_ldo2
- LDO1 (DISABLED)
  DT node labels: npm1300_ek_ldo1
- BUCK2 (DISABLED)
  DT node labels: npm1300_ek_buck2
- BUCK1 (DISABLED)
  DT node labels: npm1300_ek_buck1
- leds (READY)
- leds (DISABLED)
  DT node labels: npm1300_ek_leds
- pwmleds (READY)
- temp@4000c000 (READY)
  DT node labels: temp
- charger (DISABLED)
  DT node labels: npm1300_ek_charger

So pmic@6b is disabled despite in the npm1300.overlay:

&npm1300_ek_pmic {

host-int-gpios = <&gpio0 22 0>;

pmic-int-pin = <3>;

};

What am i missing?

[nRF52_DK_usr]

Hi, build/compiling works with that setup. Situation stays, only the LED2 (amber) is blinking. despite turning on all 3 LEDs.

"led_off(leds, 2U);"

works. disabling it makes the LED2 light up constantly. Strange.

#include <dt-bindings/regulator/npm13xx.h>

&npm1300_ek_ldo1 {
	regulator-initial-mode = <NPM13XX_LDSW_MODE_LDSW>;
};

&npm1300_ek_pmic {
	host-int-gpios = <&gpio0 4 0>;
	pmic-int-pin = <3>;

	/*
	npm1300_ek_leds: leds {
		compatible = "nordic,npm1300-led";
		status="okay";
		//nordic,led0-mode = "error";
		//nordic,led1-mode = "charging";
		nordic,led0-mode = "host";
		nordic,led1-mode = "host";
		nordic,led2-mode = "host";
	};*/
};

&npm1300_ek_leds {
		compatible = "nordic,npm1300-led";
		status="okay";
		//nordic,led0-mode = "error";
		//nordic,led1-mode = "charging";
		nordic,led0-mode = "host";
		nordic,led1-mode = "host";
		nordic,led2-mode = "host";
	};

See the C-code and my npm1300.overlay attached.

Additional, with USB-C in USB PMIC and without Battery the LED1 "CHG" is constantly on. Adding a battery, led1 turns off.

[Håkon Alseth]

Hi,

 

Can you please share your full project, including your build-folder?

Based on your description, it sounds like you have not overridden the default led setup of the EK.

 

Kind regards,

Håkon

[nRF52_DK_usr]

npm13xx_one_button.zip

[Håkon Alseth]

Hi,

 

Build shows:

				npm1300_ek_leds: leds {
					compatible = "nordic,npm1300-led"; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:69 */
					nordic,led0-mode = "error";        /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:70 */
					nordic,led1-mode = "charging";     /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:71 */
					nordic,led2-mode = "host";         /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:72 */
				};

but I cannot see that your overlay includes this sequence either?

 

&npm1300_ek_leds {
		compatible = "nordic,npm1300-led";
		status="okay";
		//nordic,led0-mode = "error";
		//nordic,led1-mode = "charging";
		nordic,led0-mode = "host";
		nordic,led1-mode = "host";
		nordic,led2-mode = "host";
	};

 

Try deleting your build folder, adding the sequence to npm1300.overlay, and remember to add this as an extra DTC overlay file when configuring your build.

 

Afterwards, go into build-folder/application-name/zephyr/zephyr.dts and check that it is set as intended:

				/* node '/soc/i2c@40003000/pmic@6b/leds' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:68 */
				npm1300_ek_leds: leds {
					compatible = "nordic,npm1300-led"; /* in ../../Users/hkn/Downloads/npm13xx_one_button/build2/npm13xx_one_button/zephyr/npm1300.overlay:61 */
					status = "okay";                   /* in ../../Users/hkn/Downloads/npm13xx_one_button/build2/npm13xx_one_button/zephyr/npm1300.overlay:62 */
					nordic,led0-mode = "host";         /* in ../../Users/hkn/Downloads/npm13xx_one_button/build2/npm13xx_one_button/zephyr/npm1300.overlay:65 */
					nordic,led1-mode = "host";         /* in ../../Users/hkn/Downloads/npm13xx_one_button/build2/npm13xx_one_button/zephyr/npm1300.overlay:66 */
					nordic,led2-mode = "host";         /* in ../../Users/hkn/Downloads/npm13xx_one_button/build2/npm13xx_one_button/zephyr/npm1300.overlay:67 */
				};

 

Kind regards,

Håkon

[nRF52_DK_usr]

Hi, the npm1300.overlay already was configured with the only-"Host" sequence.

After deleting the build folder and doing a pristine build the zephyr shows this for the pmic@6b:

			/* node '/soc/i2c@40003000/pmic@6b' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:10 */
			npm1300_ek_pmic: pmic@6b {
				compatible = "nordic,npm1300";       /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:11 */
				reg = < 0x6b >;                      /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:12 */
				host-int-gpios = < &gpio0 0x4 0x0 >; /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/intermediate/npm13xx_one_button/build/npm13xx_one_button/zephyr/npm1300.overlay:14 */
				pmic-int-pin = < 0x3 >;              /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/intermediate/npm13xx_one_button/build/npm13xx_one_button/zephyr/npm1300.overlay:15 */

				/* node '/soc/i2c@40003000/pmic@6b/gpio-controller' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:14 */
				npm1300_ek_gpio: gpio-controller {
					compatible = "nordic,npm1300-gpio"; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:15 */
					gpio-controller;                    /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:16 */
					#gpio-cells = < 0x2 >;              /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:17 */
					ngpios = < 0x5 >;                   /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:18 */
					phandle = < 0x7 >;                  /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:61 */
				};

				/* node '/soc/i2c@40003000/pmic@6b/regulators' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:21 */
				npm1300_ek_regulators: regulators {
					compatible = "nordic,npm1300-regulator"; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:22 */

					/* node '/soc/i2c@40003000/pmic@6b/regulators/BUCK1' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:25 */
					npm1300_ek_buck1: BUCK1 {
						regulator-min-microvolt = < 0xf4240 >;  /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:26 */
						regulator-max-microvolt = < 0x325aa0 >; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:27 */
					};

					/* node '/soc/i2c@40003000/pmic@6b/regulators/BUCK2' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:30 */
					npm1300_ek_buck2: BUCK2 {
						regulator-min-microvolt = < 0xf4240 >;  /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:31 */
						regulator-max-microvolt = < 0x325aa0 >; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:32 */
					};

					/* node '/soc/i2c@40003000/pmic@6b/regulators/LDO1' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:35 */
					npm1300_ek_ldo1: LDO1 {
						regulator-min-microvolt = < 0xf4240 >;  /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:36 */
						regulator-max-microvolt = < 0x325aa0 >; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:37 */
						regulator-initial-mode = < 0x3 >;       /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/intermediate/npm13xx_one_button/build/npm13xx_one_button/zephyr/npm1300.overlay:10 */
					};

					/* node '/soc/i2c@40003000/pmic@6b/regulators/LDO2' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:40 */
					npm1300_ek_ldo2: LDO2 {
						regulator-min-microvolt = < 0xf4240 >;  /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:41 */
						regulator-max-microvolt = < 0x325aa0 >; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:42 */
					};
				};

				/* node '/soc/i2c@40003000/pmic@6b/charger' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:46 */
				npm1300_ek_charger: charger {
					compatible = "nordic,npm1300-charger"; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:47 */
					term-microvolt = < 0x3f52f0 >;         /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:48 */
					term-warm-microvolt = < 0x3d0900 >;    /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:49 */
					current-microamp = < 0x249f0 >;        /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:50 */
					dischg-limit-microamp = < 0xf4240 >;   /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:51 */
					vbus-limit-microamp = < 0x7a120 >;     /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:52 */
					thermistor-ohms = < 0x2710 >;          /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:53 */
					thermistor-beta = < 0xd34 >;           /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:54 */
					charging-enable;                       /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:55 */
				};

				/* node '/soc/i2c@40003000/pmic@6b/buttons' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:58 */
				npm1300_ek_buttons: buttons {
					compatible = "gpio-keys"; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:59 */

					/* node '/soc/i2c@40003000/pmic@6b/buttons/pmic_button_0' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:60 */
					pmic_button0: pmic_button_0 {
						gpios = < &npm1300_ek_gpio 0x0 0x0 >; /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:61 */
						label = "Pmic button switch 0";       /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:62 */
						zephyr,code = < 0xb >;                /* in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:63 */
					};
				};

				/* node '/soc/i2c@40003000/pmic@6b/leds' defined in zephyr/boards/shields/npm1300_ek/npm1300_ek.overlay:67 */
				npm1300_ek_leds: leds {
					compatible = "nordic,npm1300-led"; /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/intermediate/npm13xx_one_button/build/npm13xx_one_button/zephyr/npm1300.overlay:30 */
					status = "okay";                   /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/intermediate/npm13xx_one_button/build/npm13xx_one_button/zephyr/npm1300.overlay:31 */
					nordic,led0-mode = "host";         /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/intermediate/npm13xx_one_button/build/npm13xx_one_button/zephyr/npm1300.overlay:32 */
					nordic,led1-mode = "host";         /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/intermediate/npm13xx_one_button/build/npm13xx_one_button/zephyr/npm1300.overlay:33 */
					nordic,led2-mode = "host";         /* in ../../../../mnt/df01dc22-f3bf-40d5-9858-752a58c9832d/devprojects/nordicsemi/intermediate/npm13xx_one_button/build/npm13xx_one_button/zephyr/npm1300.overlay:34 */
				};
			};

But still only LED2 (Host) is blinking.

Can you provide me your project instead of only the hex file? so i could check & compare what/why my project isn't working as intended.

[Håkon Alseth]

Hi,

 

You need to address each LED in your code, for instance:

led_on(leds, 0);
led_on(leds, 1);
led_on(leds, 2);

 

Similar when you want to turn the corresponding leds off.

 

Could you try this?

 

Kind regards,

Håkon