nrf_fuel_gauge: Update nrf_fuel_gauge to v0.11.1

Update nrf_fuel_gauge to v0.11.1, which brings
improvements to TTE, reduced RAM usage, and other tweaks.

Signed-off-by: Audun Korneliussen <[email protected]>

nrf_fuel_gauge/CHANGELOG.rst

@@ -9,6 +9,29 @@ Changelog
 
 All notable changes to this project are documented on this page.
 
+Main branch
+**********************
+
+Changes
+=======
+
+* Update to library version 0.11.1.
+* The :c:func:`nrf_fuel_gauge_init` function no longer copies the battery model pointed to in :c:struct:`nrf_fuel_gauge_init_parameters`. This means that the user must ensure that the battery model is kept valid while using the library, either in ROM or RAM.
+* The :c:func:`nrf_fuel_gauge_process` function has a new argument to specify when bus voltage is present. That is, when system is powered by vbus instead of or in addition to the battery.
+
+Added
+=====
+
+* :c:func:`nrf_fuel_gauge_opt_params_default_get` convenience function to initialize :c:struct:`nrf_fuel_gauge_config_parameters` structure.
+* :c:func:`nrf_fuel_gauge_opt_params_adjust` function to adjust certain parameters without re-initializing the library.
+* New configuration parameters in :c:struct:`nrf_fuel_gauge_config_parameters` structure.
+* New configuration parameter in :c:struct:`nrf_fuel_gauge_runtime_parameters` structure.
+
+Bug fixes
+=========
+
+* Fixed issue where battery models with less than 3 temperature points could generate wrong state-of-charge after using :c:func:`nrf_fuel_gauge_idle_set`.
+
 nRF Connect SDK v2.6.0
 **********************
 

nrf_fuel_gauge/include/nrf_fuel_gauge.h

@@ -46,7 +46,7 @@ extern const char *nrf_fuel_gauge_version;
 extern const char *nrf_fuel_gauge_build_date;
 
 /**
- * @brief Battery model parameters.
+ * @brief Secondary cell (rechargeable) battery model parameters.
  *
  * @details Parameter details purposefully not documented.
  */
@@ -84,13 +84,22 @@ struct nrf_fuel_gauge_state_info {
 /**
  * @brief Optional static configuration parameters.
  *
- * @details Parameter details purposefully not documented.
+ * @details Some parameter details purposefully not documented.
  */
 struct nrf_fuel_gauge_config_parameters {
-	float tau;
+	float tau1;
+	float tau2;
 	float neta1;
 	float neta2;
 	float neta3;
+	float beta1;
+	float beta2;
+	/**@brief Minimum duration of battery charge/discharge before TTE becomes available [s] */
+	float tte_min_time;
+	/**@brief Reset threshold for TTE calculation. If short-term state-of-charge gradient differs
+	 * from the long-term state-of-charge by this factor or more, the TTE state is reset.
+	 */
+	float tte_reset_threshold;
 };
 
 /**
@@ -103,6 +112,7 @@ struct nrf_fuel_gauge_runtime_parameters {
 	float b;
 	float c;
 	float d;
+	bool discard_positive_deltaz;
 };
 
 /**
@@ -115,15 +125,25 @@ struct nrf_fuel_gauge_init_parameters {
 	float i0;
 	/** Initial temperature in centigrades [C]. */
 	float t0;
-	/** Battery model */
+	/** Pointer to static battery model. The model is not copied and must be kept valid. */
 	const struct battery_model *model;
 	/** Optional configuration parameters. Set to NULL to use default values. */
 	const struct nrf_fuel_gauge_config_parameters *opt_params;
 };
 
+/**
+ * @brief Initialize optional configuration parameters to default values.
+ *
+ * @param[out] opt_params Pointer to the parameter structure.
+ */
+void nrf_fuel_gauge_opt_params_default_get(struct nrf_fuel_gauge_config_parameters *opt_params);
+
 /**
  * @brief Initialize the nRF Fuel Gauge library.
  *
+ * @note The battery model referenced in @ref parameters must be kept valid as long as the library
+ *       is in use.
+ *
  * @param[in] parameters Pointer to the parameter structure.
  * @param[out] v0 Adjusted battery voltage (optional, for logging purposes).
  *
@@ -139,12 +159,13 @@ int nrf_fuel_gauge_init(const struct nrf_fuel_gauge_init_parameters *parameters,
  * @param i Measured battery current [A].
  * @param T Measured battery temperature [C].
  * @param t_delta Time delta since previous processed measurement [s].
+ * @param vbus_present True if vbus voltage is present, for devices that supports this.
  * @param state Pointer to state info struct (optional, set to null to ignore).
  *
  * @retval Predicted state-of-charge [%].
  */
-float nrf_fuel_gauge_process(
-		float v, float i, float T, float t_delta, struct nrf_fuel_gauge_state_info *state);
+float nrf_fuel_gauge_process(float v, float i, float T, float t_delta, bool vbus_present,
+			     struct nrf_fuel_gauge_state_info *state);
 
 /**
  * @brief Get predicted "time-to-empty" discharge duration.
@@ -199,6 +220,15 @@ void nrf_fuel_gauge_idle_set(float v, float T, float i_avg);
  */
 void nrf_fuel_gauge_param_adjust(const struct nrf_fuel_gauge_runtime_parameters *params);
 
+/**
+ * @brief Update optional parameters.
+ *
+ * @details Parameter details purposefully not documented.
+ *
+ * @param opt_params New parameter values.
+ */
+void nrf_fuel_gauge_opt_params_adjust(const struct nrf_fuel_gauge_config_parameters *opt_params);
+
 #ifdef __cplusplus
 }
 #endif