How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

helsing — Mon, 18 Nov 2024 14:55:10 GMT

[quote user="Sigurd Hellesvik"]The pin can be configured in the app. That should fix it:[/quote]

int err = gpio_pin_configure(pmic_gpio, 1, GPIO_INPUT | GPIO_ACTIVE_HIGH | GPIO_PULL_UP);
if (err) {
  printk("gpio_pin_configure=%d\n", err);

[quote user="Priyesh Shahi"]We've tried configuring the pin as suggested, but unfortunately, it's not working.[/quote]

Here is the code Sigurd supposedly used when he tested the fix he suggested. I verified that the project builds for nrf52840dk_nrf52840. I commented out this line in src/main.c:
printf("Hello World! %s\n", CONFIG_BOARD_TARGET); EDIT: Adding attachement.

devzone.nordicsemi.com/.../pmic_5F00_gpio_5F00_ldo.zip

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

helsing — Tue, 12 Nov 2024 14:58:45 GMT

Hi Priesh,

I have taken over this ticket as Sigurd has been assigned to another task. I will check for updates and get back to you.

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Priyesh Shahi — Mon, 11 Nov 2024 10:14:44 GMT

We've tried configuring the pin as suggested, but unfortunately, it's not working. We also attempted to set it up directly via I2C, but I couldn't find a solution that way either. Do you have any updates or additional suggestions on how to proceed with this?

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Sigurd Hellesvik — Wed, 11 Sep 2024 07:06:16 GMT

The pin can be configured in the app. That should fix it:

int err = gpio_pin_configure(pmic_gpio, 1, GPIO_INPUT | GPIO_ACTIVE_HIGH | GPIO_PULL_UP);
if (err) {
  printk("gpio_pin_configure=%d\n", err);
}

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Parth Parekh — Wed, 11 Sep 2024 06:45:54 GMT

Hello, any update on this bug on the nPM1300 LDSW triggering.

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Sigurd Hellesvik — Thu, 05 Sep 2024 11:16:26 GMT

I have been able to reproduce the issue you have an have reported it to our devs as a potential bug.
I will let you know as soon as they got some way to fix this (either by correcting our mistake or by finding the bug).

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Priyesh Shahi — Wed, 04 Sep 2024 10:12:17 GMT

Yes, Earlier in my project, I set the nPM regulator in AUTO mode using the following lines:

regulator-allowed-modes = <NPM1300_BUCK_MODE_AUTO>;

regulator-initial-mode = <NPM1300_BUCK_MODE_AUTO>;

I also deleted the PWM properties from Buck 2 using the following lines:

/delete-property/ retention-gpios;

/delete-property/ pwm-gpios;

I also set the Buck 1 voltage to 3.3V using this line:

regulator-init-microvolt = <3300000>;

Additionally, I made other changes in the charger device, such as setting the charging current and maximum voltage, and those configurations are working.

Here is the config file I used in my project:

/*
 * Copyright (C) 2023 Nordic Semiconductor ASA
 * SPDX-License-Identifier: Apache-2.0
 */

#include <dt-bindings/regulator/npm1300.h>
#include <zephyr/dt-bindings/input/input-event-codes.h>
#define NPM1300_BUCK_MODE_PFM 0x04U

&arduino_i2c {
	npm1300_ek_pmic: pmic@6b {
		compatible = "nordic,npm1300";
		reg = <0x6b>;

		npm1300_ek_gpio: gpio-controller {
			compatible = "nordic,npm1300-gpio";
			gpio-controller;
			#gpio-cells = <2>;
			ngpios = <5>;
		};

		npm1300_ek_regulators: regulators {
			compatible = "nordic,npm1300-regulator";

			npm1300_ek_buck1: BUCK1 {
				regulator-min-microvolt = <1000000>;
				regulator-max-microvolt = <3300000>;
				regulator-init-microvolt = <3300000>;
				retention-microvolt = <2500000>;
				regulator-allowed-modes = <NPM1300_BUCK_MODE_AUTO>;
				regulator-initial-mode = <NPM1300_BUCK_MODE_AUTO>;
			};



			npm1300_ek_buck2: BUCK2 {
				regulator-min-microvolt = <1000000>;
				regulator-max-microvolt = <3300000>;
				/delete-property/ regulator-init-microvolt;
				retention-microvolt = <2500000>;
				regulator-allowed-modes = <NPM1300_BUCK_MODE_AUTO>;
				regulator-initial-mode = <NPM1300_BUCK_MODE_AUTO>;
				enable-gpios = <&npm1300_ek_gpio 0 GPIO_ACTIVE_HIGH>;
				/delete-property/ retention-gpios;
				/delete-property/ pwm-gpios;
			};



			npm1300_ek_ldo1: LDO1 {
				regulator-min-microvolt = <1000000>;
				regulator-max-microvolt = <3300000>;
				regulator-init-microvolt = <2500000>;
				regulator-initial-mode = <NPM1300_LDSW_MODE_LDSW>;
				// soft-start-microamp = <10000>;
				enable-gpios = <&npm1300_ek_gpio 2 GPIO_ACTIVE_HIGH>;

			};



			npm1300_ek_ldo2: LDO2 {
				regulator-min-microvolt = <1000000>;
				regulator-max-microvolt = <3300000>;
				regulator-init-microvolt = <2500000>;
				regulator-initial-mode = <NPM1300_LDSW_MODE_LDO>;
				// soft-start-microamp = <10000>;
				enable-gpios = <&npm1300_ek_gpio 1 GPIO_ACTIVE_HIGH>;
			};
		};


		npm1300_ek_charger: charger {
			compatible = "nordic,npm1300-charger";
			term-microvolt = <4200000>;
			term-warm-microvolt = <3600000>;
			// term-current-percent = <20>;
			current-microamp = <800000>;
			// trickle-microvolt = <2900000>;
			dischg-limit-microamp = <1000000>;
			vbus-limit-microamp = <1500000>;
			thermistor-ohms = <10000>;
			thermistor-beta = <3380>;
		};

		npm1300_ek_leds: leds {
			compatible = "nordic,npm1300-led";
			nordic,led0-mode = "charging";
			nordic,led1-mode = "charging";
			nordic,led2-mode = "charging";
		};

	};
};

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Sigurd Hellesvik — Wed, 04 Sep 2024 09:19:46 GMT

[quote user="Priyesh Shahi"]However, when I export the configuration and add it to my project, it doesn't seem to work. Could you provide me with a sample or some guidance on how to make it work in my project? That would be really helpful.[/quote]

Have you been able to apply any other configurations from the nPM Power Up application to a DK successfully?
It would be good to know if it is an issue with this specific feature, or with your nPM config in general.

After we find out this, I can try to reproduce it at my end

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Priyesh Shahi — Wed, 04 Sep 2024 06:29:33 GMT

Yes, this is exactly what I want to do. I tried this with the nPM PowerUp application and the nPM1300EK board, and everything you suggested is working perfectly on that.

However, when I export the configuration and add it to my project, it doesn't seem to work. Could you provide me with a sample or some guidance on how to make it work in my project? That would be really helpful.

Thank you!

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Sigurd Hellesvik — Mon, 02 Sep 2024 13:09:14 GMT

Hi Priyesh,

I will make a new conversation thread here, to start anew.
First, I recommend that you test with the nPM PowerUp application to get the functionality you need.

I tried this now, and think I got what you want.
Can you watch the video below, and confirm if this is what you need?

devzone.nordicsemi.com/.../load_5F00_switch_5F00_gpio2.mp4

Then you can use the "export" feature in nPM PowerUp to get the DTS configuration you need.

Here are the options I used:

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Priyesh Shahi — Sat, 31 Aug 2024 12:13:01 GMT

I2C communication is working correctly in my application because I am able to see the voltage and other data coming from the PMIC.

In the NPM1300 product specification page, I found information about the load switch mode, which I previously asked for help in configuring via the overlay file.

[quote userid="106736" url="~/f/nordic-q-a/114099/how-to-set-an-interrupt-on-ldsw-via-gpio-in-the-npm1300-using-the-nrf-connect-sdk/499374"]

From Product specification Load switches/LDO regulators:

"The load switches are OFF by default and can be controlled through a control register or GPIO pin using the following bits."

[/quote]

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Robin M Saltnes — Thu, 29 Aug 2024 08:33:20 GMT

Is I2C communcation working correctly in your appliaction? If there is no communication any settings from overlays will not be applied to the nPM1300 on startup... It is also important that the "nPM Controller" USB is NOT connected when you're using the EK with a DK, as that will interfere the I2C communications.

PS: telling you how to do something you asked for how to do is not the same as advising you to do it.

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Priyesh Shahi — Thu, 29 Aug 2024 04:41:28 GMT

We are using the buck converter's output at the LSIN* input, and in this ticket, I was advised to use LDSW mode.

[quote userid="92585" url="~/f/nordic-q-a/114099/how-to-set-an-interrupt-on-ldsw-via-gpio-in-the-npm1300-using-the-nrf-connect-sdk/499496"]

You have to add
enable-gpios = <&npm1300_ek_gpio 0 GPIO_ACTIVE_HIGH>;
to the load swtich/LDO settings portion of your overlay.

You also have to add the gpio controller in the i2c configuration portion of the overlay.

example:

[/quote]

look into the code snippet provided in the conversation above.

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Sigurd Hellesvik — Wed, 28 Aug 2024 13:40:03 GMT

Hi Parth,

I am not able to create on-demand samples.
I suggest that you try to make your own sample following our documentation or webinar on the nPM1300 and create a ticket here on DevZone if you get any problems.

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Sigurd Hellesvik — Wed, 28 Aug 2024 13:33:55 GMT

I am talking with our experts here, and they ask:

"
Can you confirm customer has connected something at LSIN* inputs? Also it seems they want to use the LDO mode, but they are configuring it as LDSW ( regulator-initial-mode = <NPM1300_LDSW_MODE_LDSW>; )."

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Priyesh Shahi — Tue, 27 Aug 2024 05:28:04 GMT

The code snippet I provided earlier is actually from that same sample, but unfortunately, it's not working as expected in my case.

I want to configure one of the nPM1300 GPIOs to trigger the load switch.

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Sigurd Hellesvik — Mon, 26 Aug 2024 13:33:08 GMT

I see that the nPM1300 One Button sample has not been mentioned in this ticket yet.

Maybe this sample does what you need?

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Priyesh Shahi — Sat, 24 Aug 2024 10:40:34 GMT

Hi,

I tried the approach you suggested by adding enable-gpios = <&npm1300_ek_gpio 0 GPIO_ACTIVE_HIGH>; to the load switch/LDO settings portion of my overlay. I also included the GPIO controller in the I2C configuration section as you advised.

However, it didn't work as expected. Below is the code I tried:

&i2c0_default {
	group1 {
		bias-pull-up;
	};
};

&arduino_i2c {
    npm1300_ek_pmic: pmic@6b {
        compatible = "nordic,npm1300";
        reg = <0x6b>;
 
        npm1300_ek_gpio: gpio-controller {
            compatible = "nordic,npm1300-gpio";
            gpio-controller;
            #gpio-cells = <2>;
            ngpios = <5>;
        };


		npm1300_ek_regulators: regulators {
			compatible = "nordic,npm1300-regulator";

            npm1300_ek_ldo1: LDO1 {
				regulator-init-microvolt = <3300000>;
				regulator-allowed-modes = <NPM1300_LDSW_MODE_LDSW>;
                regulator-initial-mode = <NPM1300_LDSW_MODE_LDSW>;
                // soft-start-microamp = <20000>;
                enable-gpios = <&npm1300_ek_gpio 3 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;             
            };
		};
         
    };    
 };

Additionally, I found in one of the DT binding files that to make the enable-gpios property work, we might need to set the DVS (Dynamic Voltage Scaling) mode first.

Could you please advise on the next steps? Should we configure the DVS mode before enabling the GPIO, or is there something else that might be missing?

Thanks for your help!

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Robin M Saltnes — Fri, 23 Aug 2024 08:29:11 GMT

Hi, yes this is possible.

You have to add
enable-gpios = <&npm1300_ek_gpio 0 GPIO_ACTIVE_HIGH>;
to the load swtich/LDO settings portion of your overlay.

You also have to add the gpio controller in the i2c configuration portion of the overlay.

example:

&arduino_i2c {
   npm1300_ek_pmic: pmic@6b {
       compatible = "nordic,npm1300";
       reg = <0x6b>;

       npm1300_ek_gpio: gpio-controller {
           compatible = "nordic,npm1300-gpio";
           gpio-controller;
           #gpio-cells = <2>;
           ngpios = <5>;
       };

};

npm1300_ek_ldo1: LDO1 {
    regulator-initial-mode = <NPM1300_LDSW_MODE_LDSW>;
    // soft-start-microamp = <20000>;
    enable-gpios = <&npm1300_ek_gpio 0 GPIO_ACTIVE_HIGH>;
    
};

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Parth Parekh — Thu, 22 Aug 2024 13:07:16 GMT

also can you please provide a simple example code based on zephyr on how to trigger the load switches with GPIO HIGH/LOW ?

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Priyesh Shahi — Thu, 22 Aug 2024 12:37:50 GMT

Hi Sigurd,

Thank you for the information regarding the control of load switches/LDO regulators through a control register or GPIO pin.

I was wondering if it’s possible to implement these changes (controlling the load switches) directly via the overlay file in NCS, without modifying the source code. Specifically, I'm looking to set the control through a GPIO pin using the overlay file configuration.

Any guidance on this would be greatly appreciated.

Regards,

Priyesh shahi

RE: How to set an interrupt on LDSW via GPIO in the NPM1300 using the nRF Connect SDK.

Sigurd Hellesvik — Thu, 22 Aug 2024 12:33:51 GMT

Hi,

From Product specification Load switches/LDO regulators:

"The load switches are OFF by default and can be controlled through a control register or GPIO pin using the following bits."

Regards,
Sigurd Hellesvik