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?

[Håkon Alseth]

Hi,

 

Here is the .hex that I used for testing:

8400.zephyr.hex 

And here is a picture of my setup:

It is similar to yours, and I also tried setting up similar to your setup (P15 header), and still did not see any issues.

 

Could you try my .hex file and see if this behaves similar?

 

Kind regards,

Håkon

[nRF52_DK_usr]

HI, thanks for the file, but how do i flash the hexfile onto my nRF52 DK in VS Code?

[Håkon Alseth]

You can use nrfutil from cmd line:

nrfutil device program --firmware zephyr.hex

 

Or you can use the nRF connect for desktop -> "Programmer" application if you want a graphical interface.

 

Kind regards,

Håkon

[nRF52_DK_usr]

*** Booting nRF Connect SDK v3.3.0-ba167d9f3db4 ***
*** Using Zephyr OS v4.3.99-fd9204a02d52 ***
Set up button at gpio@50000000 pin 13
V: 4.165 I: 0.0001 T: 24.79
Charger Status: 5, Error: 0, VBUS: connected
V: 4.165 I: 0.0003 T: 24.79
Charger Status: 5, Error: 0, VBUS: connected
V: 4.165 I: 0.0001 T: 24.79
Charger Status: 5, Error: 0, VBUS: connected
V: 4.165 I: 0.0001 T: 24.79

[nRF52_DK_usr]

After connecting a BAttery the charger status changed:

Charger Status: 5, Error: 0, VBUS: connected
V: 4.165 I: 0.0001 T: 24.79
Charger Status: 5, Error: 0, VBUS: connected
V: 4.165 I: 0.0001 T: 24.79
Charger Status: 5, Error: 0, VBUS: connected
V: 4.145 I: 0.1590 T: 24.79
Charger Status: 9, Error: 0, VBUS: connected
V: 4.145 I: 0.1590 T: 24.79
Charger Status: 9, Error: 0, VBUS: connected
V: 4.145 I: 0.1590 T: 24.79
Charger Status: 9, Error: 0, VBUS: connected

[Håkon Alseth]

Hi,

 

Good, this means that the setup is working with the precompiled .hex that I shared.

Then I suspect the issue is how your firmware is setup, ie. built.

 

Try to delete your build folder, do not add any specific overlays or .conf files; and only set the SHIELD parameter, similar to this:

 

Since we cannot overload the west cmd switch here, we just set the EK directly in CMakeLists.txt:

# Copyright (c) 2023 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0

cmake_minimum_required(VERSION 3.20.0)

set(EXTRA_DTC_OVERLAY_FILE npm1300.overlay)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})

project(npm13xx_ek)
target_sources(app PRIVATE src/main.c)

 

Kind regards,

Håkon

[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