nrfconnect · rlubos · Aug 20, 2025 · Jul 24, 2025
@@ -1,3 +1,3 @@
 """
 Copyright (c) 2022 Nordic Semiconductor
 SPDX-License-Identifier: Apache-2.0
@@ -441,6 +441,7 @@
     ("samples/wifi/sr_coex/README", "samples/wifi/ble_coex/README"), # Wi-Fi: Bluetooth LE coexistence
     ("samples/samples_zigbee", "samples/zigbee"), # Zigbee samples (landing)
     ("samples/samples_other", "samples/other"), # Other samples (landing)
+    ("samples/pmic/native/npm1300_fuel_gauge/README", "samples/pmic/native/npm13xx_fuel_gauge/README"),
     ("libraries/bluetooth_services/index", "libraries/bluetooth/index"), # Changed the folder name libraries/bluetooth_services to libraries/bluetooth to better match the include folder structure
     ("libraries/bluetooth_services/adv_prov", "libraries/bluetooth/adv_prov"),
     ("libraries/bluetooth_services/conn_ctx", "libraries/bluetooth/conn_ctx"),

@@ -122,7 +122,7 @@ Connecting the development kit to nPM1300
 =========================================
 
 If you are using the nRF5340 DK, follow the steps in `Use the nPM1300 EK with an nRF5340 DK`_ in the `nPM1300 EK User Guide`_.
-For other Nordic Semiconductor kits, use the wiring steps in the documentation for :ref:`pmic_samples` as reference (:ref:`wiring for the Fuel gauge sample <npm1300_fuel_gauge_wiring>` and :ref:`wiring for the One button sample <npm1300_one_button_wiring>`, respectively).
+For other Nordic Semiconductor kits, use the wiring steps in the documentation for :ref:`pmic_samples` as reference (:ref:`wiring for the Fuel gauge sample <npm13xx_fuel_gauge_wiring>` and :ref:`wiring for the One button sample <npm1300_one_button_wiring>`, respectively).
 
 If you are using custom hardware, the wiring process is similar to the `one for the nRF5340 DK <Use the nPM1300 EK with an nRF5340 DK_>`_, but board-specific steps will be different.
 

@@ -350,6 +350,8 @@
 .. _`nPM1300 EK product page`: https://www.nordicsemi.com/Products/Development-hardware/nPM1300-EK
 .. _`nPM1300 EK get started`: https://www.nordicsemi.com/Products/Development-hardware/nPM1300-EK/Get-started?lang=en#infotabs
 
+.. _`nPM1304 product website`: https://www.nordicsemi.com/products/npm1304
+
 .. _`nPM2100 product website`: https://www.nordicsemi.com/Products/nPM2100
 .. _`nRF Desktop reference design page`: https://www.nordicsemi.com/Products/Reference-designs/nRF-Desktop
 .. _`Nordic Semiconductor's IoT cloud platform`: https://www.nordicsemi.com/Products/Cloud-services

@@ -56,7 +56,7 @@ The following list includes the summary of the most relevant changes introduced
   * PMIC: nPM1300 PMIC and nPM1300 EK:
 
     * Charger, BUCKs, LDOs, Load Switches, and GPIOs.
-    * :ref:`Sample showing fuel gauge functionality <npm1300_fuel_gauge>`.
+    * :ref:`Sample showing fuel gauge functionality <npm13xx_fuel_gauge>`.
       The sample calculates battery state of charge, time to empty, time to full and provides updates of these over the terminal once every second.
     * The nPM1300 EK sample that supports PMIC features: regulators (BUCKs, LDO) and GPIOs.
 
@@ -622,7 +622,7 @@ nRF9160 samples
 PMIC samples
 ------------
 
-* Added :ref:`npm1300_fuel_gauge` sample that demonstrates how to calculate the battery state of charge using the :ref:`nrfxlib:nrf_fuel_gauge`.
+* Added the :ref:`nPM1300: Fuel gauge <npm13xx_fuel_gauge>` sample that demonstrates how to calculate the battery state of charge using the :ref:`nrfxlib:nrf_fuel_gauge`.
 
 Trusted Firmware-M (TF-M) samples
 ---------------------------------

@@ -928,7 +928,7 @@ PMIC samples
 
 * Added :ref:`npm1300_one_button` sample that demonstrates how to support wake-up, shutdown, and user interactions through a single button connected to the nPM1300.
 
-* :ref:`npm1300_fuel_gauge` sample:
+* :ref:`nPM1300: Fuel gauge <npm13xx_fuel_gauge>` sample:
 
   * Updated to accommodate API changes in the :ref:`nrfxlib:nrf_fuel_gauge`.
 

@@ -688,7 +688,7 @@ PMIC samples
 
 * Added support for the :zephyr:board:`nrf54l15dk` and :zephyr:board:`nrf54h20dk` to the PMIC samples.
 
-* :ref:`npm1300_fuel_gauge` sample:
+* :ref:`nPM1300: Fuel gauge <npm13xx_fuel_gauge>` sample:
 
   * Updated to accommodate API changes in nRF Fuel Gauge library v0.11.1.
 

@@ -933,7 +933,7 @@ PMIC samples
 
 * Added support for the :zephyr:board:`nrf54l15dk` and :zephyr:board:`nrf54h20dk` to the PMIC samples.
 
-* :ref:`npm1300_fuel_gauge` sample:
+* :ref:`nPM1300: Fuel gauge <npm13xx_fuel_gauge>` sample:
 
   * Updated to accommodate API changes in nRF Fuel Gauge library v0.11.1.
 

@@ -496,7 +496,7 @@ Peripheral samples
 PMIC samples
 ------------
 
-* :ref:`npm1300_fuel_gauge` sample:
+* :ref:`nPM1300: Fuel gauge <npm13xx_fuel_gauge>` sample:
 
   * Updated to accommodate API changes in nRF Fuel Gauge library v1.0.0.
 

@@ -650,7 +650,7 @@ PMIC samples
   * The :ref:`npm2100_one_button` sample that demonstrates how to support wake-up, shutdown, and user interactions through a single button connected to the nPM2100 PMIC.
   * The :ref:`npm2100_fuel_gauge` sample that demonstrates how to calculate the battery state of charge of primary cell batteries using the :ref:`nrfxlib:nrf_fuel_gauge`.
 
-* :ref:`npm1300_fuel_gauge` sample:
+* :ref:`nPM1300: Fuel gauge <npm13xx_fuel_gauge>` sample:
 
   * Updated to accommodate API changes in nRF Fuel Gauge library v1.0.0.
 

@@ -903,7 +903,7 @@ PMIC samples
   * The :ref:`npm2100_one_button` sample that demonstrates how to support wake-up, shutdown, and user interactions through a single button connected to the nPM2100 PMIC.
   * The :ref:`npm2100_fuel_gauge` sample that demonstrates how to calculate the battery state of charge of primary cell batteries using the :ref:`nrfxlib:nrf_fuel_gauge`.
 
-* :ref:`npm1300_fuel_gauge` sample:
+* :ref:`nPM1300: Fuel gauge <npm13xx_fuel_gauge>` sample:
 
   * Updated to accommodate API changes in nRF Fuel Gauge library v1.0.0.
 

@@ -769,7 +769,7 @@ Peripheral samples
 PMIC samples
 ------------
 
-* :ref:`npm1300_fuel_gauge` sample:
+* :ref:`nPM1300: Fuel gauge <npm13xx_fuel_gauge>` sample:
 
   * Updated current sign when calling the ``nrf_fuel_gauge`` lib functions.
     In the Zephyr sensor API the convention for the gauge current is ``negative=discharging``, while the :ref:`nrfxlib:nrf_fuel_gauge` lib uses the opposite.

@@ -5,10 +5,8 @@ cmake_minimum_required(VERSION 3.20.0)
 
 list(APPEND BOARD_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
 
-set(SHIELD npm1300_ek)
-
 find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
 
-project(npm1300_fuel_gauge)
+project(npm13xx_fuel_gauge)
 
 add_subdirectory(src)
@@ -1,15 +1,15 @@
-.. _npm1300_fuel_gauge:
+.. _npm13xx_fuel_gauge:
 
-nPM1300: Fuel gauge
-###################
+nPM1300 and nPM1304: Fuel gauge
+###############################
 
 .. contents::
    :local:
    :depth: 2
 
-The Fuel gauge sample demonstrates how to calculate the state of charge of a development kit battery using `nPM1300 <nPM1300 product website_>`_ and the :ref:`nrfxlib:nrf_fuel_gauge`.
+The Fuel gauge sample demonstrates how to calculate the state of charge of a development kit battery using `nPM1300 <nPM1300 product website_>`_ or  `nPM1304 <nPM1304 product website_>`_ and the :ref:`nrfxlib:nrf_fuel_gauge`.
 
-For more information about fuel gauging with the nPM1300, see `Using the nPM1300 Fuel Gauge`_.
+For more information about fuel gauging with the nPM1300 or nPM1304, see `Using the nPM1300 Fuel Gauge`_.
 
 Requirements
 ************
@@ -18,27 +18,27 @@ The sample supports the following development kits:
 
 .. table-from-sample-yaml::
 
-The sample also requires an `nPM1300 EK <nPM1300 EK product page_>`_ that you need to connect to the development kit as described in `Wiring`_.
+The sample also requires an `nPM1300 EK <nPM1300 EK product page_>`_ or nPM1304 EK that you need to connect to the development kit as described in `Wiring`_.
 
 Overview
 ********
 
-This sample allows to calculate the state of charge, time to empty, and time to full information from a battery on the development kit connected to the nPM1300 PMIC.
+This sample allows to calculate the state of charge, time to empty, and time to full information from a battery on the development kit connected to the nPM1300 or nPM1304 PMIC.
 
-.. _npm1300_fuel_gauge_wiring:
+.. _npm13xx_fuel_gauge_wiring:
 
 Wiring
 ******
 
-To connect your DK to the nPM1300 EK, complete the following steps:
+To connect your DK to the nPM1300 or nPM1304 EK, complete the following steps:
 
-#. Connect the TWI interface between the chosen DK and the nPM1300 EK as in the following table:
+#. Connect the TWI interface between the chosen DK and the nPM1300 or nPM1304 EK as in the following table:
 
-   .. list-table:: nPM1300 EK connections.
+   .. list-table:: nPM1300/nPM1304 EK connections.
       :widths: auto
       :header-rows: 1
 
-      * - nPM1300 EK pins
+      * - EK pins
         - nRF52 DK pins
         - nRF52840 DK pins
         - nRF5340 DK pins
@@ -50,7 +50,7 @@ To connect your DK to the nPM1300 EK, complete the following steps:
         - P0.26
         - P1.02
         - P1.11
-        - P0.04
+        - P0.05
         - P0.30
       * - SCL
         - P0.27
@@ -60,12 +60,12 @@ To connect your DK to the nPM1300 EK, complete the following steps:
         - P0.00
         - P0.31
       * - GPIO3
-        - P0.22
-        - P1.12
-        - P1.12
-        - P1.10
-        - P0.05
-        - P0.10
+        - P0.04
+        - P0.04
+        - P0.04
+        - P0.04
+        - P0.04
+        - P0.04
       * - VDDIO
         - VDD
         - VDD
@@ -81,26 +81,52 @@ To connect your DK to the nPM1300 EK, complete the following steps:
         - GND
         - GND
 
-#. Make the following connections on the nPM1300 EK:
+#. Make the following connections on the nPM1300 or nPM1304 EK:
 
    * Remove all existing connections.
-   * Connect a USB power supply to the **J3** connector.
+   * Connect a USB power supply to the connector **J3** (on nPM1300) or **J4** (on nPM1304).
    * Connect a suitable battery to the **J2** connector.
-   * On the **P2** pin header, connect **VBAT** and **VBATIN** pins with a jumper.
+   * On the **P1** pin header, connect **VBAT** and **VBATIN** pins with a jumper.
    * On the **P17** pin header, connect all LEDs with jumpers.
    * On the **P13** pin header, connect **RSET1** and **VSET1** pins with a jumper.
    * On the **P14** pin header, connect **RSET2** and **VSET2** pins with a jumper.
 
 .. note::
-   When using the :zephyr:board:`nrf54l15dk`, the nPM1300 **GPIO3** interrupt pin assignment uses the DK's **LED 1** pin.
+   When using the :zephyr:board:`nrf54l15dk`, the PMIC **GPIO3** interrupt pin assignment uses the DK's **BUTTON 3** pin.
 
 Building and running
 ********************
 
-.. |sample path| replace:: :file:`samples/pmic/native/npm1300_fuel_gauge`
+.. |sample path| replace:: :file:`samples/pmic/native/npm13xx_fuel_gauge`
 
 .. include:: /includes/build_and_run.txt
 
+To build this sample for either nPM1300 or nPM1304, you need to apply an appropriate build configuration.
+The build configuration consist of choosing a Zephyr shield (``npm1300_ek`` or ``npm1304_ek``) and
+applying an extra devicetree overlay file (``npm1300.overlay`` or ``npm1304.overlay``)
+You can use either the nRF Connect for VS Code extension or the command line.
+
+.. tabs::
+
+   .. group-tab:: nRF Connect for VS Code
+
+      To choose a shield, add an **Extra CMake argument** in your build configuration, for example:
+
+      .. code-block:: bash
+
+         -DSHIELD=npm1300_ek
+
+      To apply an extra overlay, choose the respective file from the **Extra Devicetree overlays** drop-down menu
+
+   .. group-tab:: Command line
+
+      To apply the appropriate configuration, use the ``-T`` argument of the ``west build`` command.
+      For example, to build for an nRF54L15 DK and an nPM1300 EK use the following command:
+
+      .. code-block:: bash
+
+         west build -b nrf54l15dk/nrf54l15/cpuapp samples/pmic/native/npm13xx_fuel_gauge -T sample.npm1300_fuel_gauge_compile
+
 Testing
 *******
 

@@ -7,14 +7,14 @@
 &pinctrl {
 	i2c130_default: i2c130_default {
 		group1 {
-			psels = <NRF_PSEL(TWIM_SDA, 0, 4)>,
+			psels = <NRF_PSEL(TWIM_SDA, 0, 5)>,
 				<NRF_PSEL(TWIM_SCL, 0, 0)>;
 		};
 	};
 
 	i2c130_sleep: i2c130_sleep {
 		group1 {
-			psels = <NRF_PSEL(TWIM_SDA, 0, 4)>,
+			psels = <NRF_PSEL(TWIM_SDA, 0, 5)>,
 				<NRF_PSEL(TWIM_SCL, 0, 0)>;
 			low-power-enable;
 		};

@@ -9,8 +9,3 @@
 		bias-pull-up;
 	};
 };
-
-&npm1300_ek_pmic {
-	host-int-gpios = <&gpio1 12 0>;
-	pmic-int-pin = <3>;
-};
@@ -9,8 +9,3 @@
 		bias-pull-up;
 	};
 };
-
-&npm1300_ek_pmic {
-	host-int-gpios = <&gpio0 22 0>;
-	pmic-int-pin = <3>;
-};
@@ -9,8 +9,3 @@
 		bias-pull-up;
 	};
 };
-
-&npm1300_ek_pmic {
-	host-int-gpios = <&gpio1 12 0>;
-	pmic-int-pin = <3>;
-};
@@ -4,8 +4,6 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
- #include <dt-bindings/regulator/npm13xx.h>
-
 &i2c130_default {
 	group1 {
 		bias-pull-up;
@@ -19,8 +17,3 @@
 &gpio0 {
 	status = "okay";
 };
-
-&npm1300_ek_pmic {
-	host-int-gpios = <&gpio0 5 0>;
-	pmic-int-pin = <3>;
-};
@@ -13,8 +13,3 @@
 &i2c21 {
 	status = "okay";
 };
-
-&npm1300_ek_pmic {
-	host-int-gpios = <&gpio1 10 0>;
-	pmic-int-pin = <3>;
-};
@@ -13,8 +13,3 @@
 &i2c21 {
 	status = "okay";
 };
-
-&npm1300_ek_pmic {
-	host-int-gpios = <&gpio1 10 0>;
-	pmic-int-pin = <3>;
-};
@@ -9,8 +9,3 @@
 		bias-pull-up;
 	};
 };
-
-&npm1300_ek_pmic {
-	host-int-gpios = <&gpio0 10 0>;
-	pmic-int-pin = <3>;
-};
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+&npm1300_ek_pmic {
+	host-int-gpios = <&gpio0 4 0>;
+	pmic-int-pin = <3>;
+};
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+&npm1304_ek_pmic {
+	host-int-gpios = <&gpio0 4 0>;
+	pmic-int-pin = <3>;
+};