Ina238 + 237 via a refactor of INA260 too.

library.properties

@@ -7,4 +7,4 @@ paragraph=Arduino application for Adafruit.io WipperSnapper
 category=Communication
 url=https://github.com/adafruit/Adafruit_Wippersnapper_Arduino
 architectures=*
-depends=SdFat - Adafruit Fork, Adafruit NeoPixel, Adafruit SPIFlash, ArduinoJson, Adafruit DotStar, Adafruit HDC302x, Adafruit INA219, Adafruit INA260 Library, Adafruit LTR329 and LTR303, Adafruit LTR390 Library, Adafruit MCP3421, Adafruit NAU7802 Library, Adafruit SleepyDog Library, Adafruit TMP117, Adafruit TinyUSB Library, Adafruit AHTX0, Adafruit BME280 Library, Adafruit BMP280 Library, Adafruit BMP3XX Library, Adafruit DPS310, Adafruit DS248x, Adafruit SCD30, Adafruit SGP30 Sensor, Adafruit SGP40 Sensor, Sensirion I2C SCD4x, Sensirion I2C SEN5X, Sensirion I2C SEN66, arduino-sht, Adafruit Si7021 Library, Adafruit MQTT Library, Adafruit MS8607, Adafruit MCP9808 Library, Adafruit MCP9600 Library, Adafruit MPL115A2, Adafruit MPRLS Library, Adafruit TSL2591 Library, Adafruit_VL53L0X, Adafruit VL53L1X, STM32duino VL53L4CD, STM32duino VL53L4CX, Adafruit_VL6180X, Adafruit PM25 AQI Sensor, Adafruit VCNL4020 Library, Adafruit VCNL4040, Adafruit VCNL4200 Library, Adafruit VEML7700 Library, Adafruit LC709203F, Adafruit LPS2X, Adafruit LPS28, Adafruit LPS35HW, Adafruit seesaw Library, Adafruit BME680 Library, Adafruit MAX1704X, Adafruit ADT7410 Library, Adafruit HTS221, Adafruit HTU21DF Library, Adafruit HTU31D Library, Adafruit PCT2075, hp_BH1750, ENS160 - Adafruit Fork, Adafruit BusIO, Adafruit Unified Sensor, Sensirion Core, Adafruit GFX Library, Adafruit LED Backpack Library, Adafruit LiquidCrystal, Adafruit SH110X, Adafruit SSD1306
+depends=SdFat - Adafruit Fork, Adafruit NeoPixel, Adafruit SPIFlash, ArduinoJson, Adafruit DotStar, Adafruit HDC302x, Adafruit INA219, Adafruit INA260 Library, Adafruit INA237 and INA238 Library, Adafruit LTR329 and LTR303, Adafruit LTR390 Library, Adafruit MCP3421, Adafruit NAU7802 Library, Adafruit SleepyDog Library, Adafruit TMP117, Adafruit TinyUSB Library, Adafruit AHTX0, Adafruit BME280 Library, Adafruit BMP280 Library, Adafruit BMP3XX Library, Adafruit DPS310, Adafruit DS248x, Adafruit SCD30, Adafruit SGP30 Sensor, Adafruit SGP40 Sensor, Sensirion I2C SCD4x, Sensirion I2C SEN5X, Sensirion I2C SEN66, arduino-sht, Adafruit Si7021 Library, Adafruit MQTT Library, Adafruit MS8607, Adafruit MCP9808 Library, Adafruit MCP9600 Library, Adafruit MPL115A2, Adafruit MPRLS Library, Adafruit TSL2591 Library, Adafruit_VL53L0X, Adafruit VL53L1X, STM32duino VL53L4CD, STM32duino VL53L4CX, Adafruit_VL6180X, Adafruit PM25 AQI Sensor, Adafruit VCNL4020 Library, Adafruit VCNL4040, Adafruit VCNL4200 Library, Adafruit VEML7700 Library, Adafruit LC709203F, Adafruit LPS2X, Adafruit LPS28, Adafruit LPS35HW, Adafruit seesaw Library, Adafruit BME680 Library, Adafruit MAX1704X, Adafruit ADT7410 Library, Adafruit HTS221, Adafruit HTU21DF Library, Adafruit HTU31D Library, Adafruit PCT2075, hp_BH1750, ENS160 - Adafruit Fork, Adafruit BusIO, Adafruit Unified Sensor, Sensirion Core, Adafruit GFX Library, Adafruit LED Backpack Library, Adafruit LiquidCrystal, Adafruit SH110X, Adafruit SSD1306

platformio.ini

@@ -39,6 +39,7 @@ lib_deps =
     adafruit/Adafruit DS248x
     adafruit/Adafruit INA219
     adafruit/Adafruit INA260 Library
+    adafruit/Adafruit INA237 and INA238 Library
     adafruit/Adafruit HDC302x
     adafruit/Adafruit HTS221
     adafruit/Adafruit HTU21DF Library
@@ -370,7 +371,7 @@ extra_scripts =  pre:rename_usb_config.py
 extends = common:esp32
 board = adafruit_qtpy_esp32s3_nopsram
 build_flags = -DARDUINO_ADAFRUIT_QTPY_ESP32S3_NOPSRAM
-board_build.partitions = tinyuf2-partitions-4MB.csv
+board_build.partitions = tinyuf2-partitions-8MB.csv
 extra_scripts = pre:rename_usb_config.py
 
 ; Adafruit QT Py ESP32-S3 with PSRAM

src/components/i2c/WipperSnapper_I2C.cpp

@@ -380,6 +380,28 @@ bool WipperSnapper_Component_I2C::initI2CDevice(
     _scd30->configureDriver(msgDeviceInitReq);
     drivers.push_back(_scd30);
     WS_DEBUG_PRINTLN("SCD30 Initialized Successfully!");
+  } else if (strcmp("ina237", msgDeviceInitReq->i2c_device_name) == 0) {
+    _ina237 = new WipperSnapper_I2C_Driver_INA237(this->_i2c, i2cAddress);
+    if (!_ina237->begin()) {
+      WS_DEBUG_PRINTLN("ERROR: Failed to initialize INA237");
+      _busStatusResponse =
+          wippersnapper_i2c_v1_BusResponse_BUS_RESPONSE_DEVICE_INIT_FAIL;
+      return false;
+    }
+    _ina237->configureDriver(msgDeviceInitReq);
+    drivers.push_back(_ina237);
+    WS_DEBUG_PRINTLN("INA237 Initialized Successfully!");
+  } else if (strcmp("ina238", msgDeviceInitReq->i2c_device_name) == 0) {
+    _ina238 = new WipperSnapper_I2C_Driver_INA238(this->_i2c, i2cAddress);
+    if (!_ina238->begin()) {
+      WS_DEBUG_PRINTLN("ERROR: Failed to initialize INA238");
+      _busStatusResponse =
+          wippersnapper_i2c_v1_BusResponse_BUS_RESPONSE_DEVICE_INIT_FAIL;
+      return false;
+    }
+    _ina238->configureDriver(msgDeviceInitReq);
+    drivers.push_back(_ina238);
+    WS_DEBUG_PRINTLN("INA238 Initialized Successfully!");
   } else if (strcmp("ina219", msgDeviceInitReq->i2c_device_name) == 0) {
     _ina219 = new WipperSnapper_I2C_Driver_INA219(this->_i2c, i2cAddress);
     if (!_ina219->begin()) {

src/components/i2c/WipperSnapper_I2C.h

@@ -35,6 +35,8 @@
 #include "drivers/WipperSnapper_I2C_Driver_HTU21D.h"
 #include "drivers/WipperSnapper_I2C_Driver_HTU31D.h"
 #include "drivers/WipperSnapper_I2C_Driver_INA219.h"
+#include "drivers/WipperSnapper_I2C_Driver_INA237.h"
+#include "drivers/WipperSnapper_I2C_Driver_INA238.h"
 #include "drivers/WipperSnapper_I2C_Driver_INA260.h"
 #include "drivers/WipperSnapper_I2C_Driver_LC709203F.h"
 #include "drivers/WipperSnapper_I2C_Driver_LPS22HB.h"
@@ -85,6 +87,9 @@
 
 // forward decl.
 class Wippersnapper;
+class WipperSnapper_I2C_Driver_INA260;
+class WipperSnapper_I2C_Driver_INA237;
+class WipperSnapper_I2C_Driver_INA238;
 
 /**************************************************************************/
 /*!
@@ -163,6 +168,8 @@ class WipperSnapper_Component_I2C {
   WipperSnapper_I2C_Driver_HTU21D *_htu21d = nullptr;
   WipperSnapper_I2C_Driver_HTU31D *_htu31d = nullptr;
   WipperSnapper_I2C_Driver_INA219 *_ina219 = nullptr;
+  WipperSnapper_I2C_Driver_INA237 *_ina237 = nullptr;
+  WipperSnapper_I2C_Driver_INA238 *_ina238 = nullptr;
   WipperSnapper_I2C_Driver_INA260 *_ina260 = nullptr;
   WipperSnapper_I2C_Driver_LTR329_LTR303 *_ltr329 = nullptr;
   WipperSnapper_I2C_Driver_LTR390 *_ltr390 = nullptr;

src/components/i2c/drivers/WipperSnapper_I2C_Driver.h

@@ -16,8 +16,10 @@
 #ifndef WipperSnapper_I2C_Driver_H
 #define WipperSnapper_I2C_Driver_H
 
+#include "../../../wippersnapper/i2c/v1/i2c.pb.h"
 #include <Adafruit_Sensor.h>
 #include <Arduino.h>
+#include <Wire.h>
 
 #define PERIOD_24HRS_AGO_MILLIS (millis() - (24 * 60 * 60 * 1000))
 ///< Used for last sensor read time, initially set 24hrs ago (max period)

src/components/i2c/drivers/WipperSnapper_I2C_Driver_INA237.cpp

@@ -0,0 +1,107 @@
+/*!
+ * @file WipperSnapper_I2C_Driver_INA237.cpp
+ *
+ * Device driver implementation for the INA237 DC Current and Voltage Monitor
+ * (Avoids import conflict with INA260 typedef enum _mode etc)
+ *
+ */
+
+#include "WipperSnapper_I2C_Driver_INA237.h"
+#include "../../../Wippersnapper.h"
+#include <Adafruit_INA237.h>
+
+/*******************************************************************************/
+/*!
+    @brief    Constructor for a INA237 sensor.
+    @param    i2c
+              The I2C interface.
+    @param    sensorAddress
+              The 7-bit I2C address of the sensor.
+*/
+/*******************************************************************************/
+WipperSnapper_I2C_Driver_INA237::WipperSnapper_I2C_Driver_INA237(
+    TwoWire *i2c, uint16_t sensorAddress)
+    : WipperSnapper_I2C_Driver(i2c, sensorAddress), _ina237(nullptr) {
+  _i2c = i2c;
+  _sensorAddress = sensorAddress;
+}
+
+/*******************************************************************************/
+/*!
+    @brief    Destructor for an INA237 sensor.
+*/
+/*******************************************************************************/
+WipperSnapper_I2C_Driver_INA237::~WipperSnapper_I2C_Driver_INA237() {
+  delete _ina237;
+}
+
+/*******************************************************************************/
+/*!
+    @brief    Initializes the INA237 sensor and begins I2C.
+    @returns  True if initialized successfully, False otherwise.
+*/
+/*******************************************************************************/
+bool WipperSnapper_I2C_Driver_INA237::begin() {
+  _ina237 = new Adafruit_INA237();
+  if (!_ina237->begin(_sensorAddress, _i2c)) {
+    WS_DEBUG_PRINTLN("INA237 failed to initialise!");
+    return false;
+  }
+
+  // Configuration based on INA237 example sketch
+  // Set default shunt resistance and maximum current
+  // Default 0.015 ohm shunt, 10A max current
+  _ina237->setShunt(0.015, 10.0);
+
+  // Set averaging for better accuracy (16 samples)
+  _ina237->setAveragingCount(INA2XX_COUNT_16);
+
+  // Set conversion times as per example
+  _ina237->setVoltageConversionTime(INA2XX_TIME_150_us);
+  _ina237->setCurrentConversionTime(INA2XX_TIME_280_us);
+
+  return true;
+}
+
+/*******************************************************************************/
+/*!
+    @brief    Reads a voltage sensor and converts the
+              reading into the expected SI unit.
+    @param    voltageEvent
+              voltage sensor reading, in volts.
+    @returns  True if the sensor event was obtained successfully, False
+              otherwise.
+*/
+/*******************************************************************************/
+bool WipperSnapper_I2C_Driver_INA237::getEventVoltage(
+    sensors_event_t *voltageEvent) {
+  voltageEvent->voltage = _ina237->getBusVoltage_V();
+  return true;
+}
+
+/**
+ * @brief   Get the current sensor event.
+ *
+ * @param   currentEvent  Pointer to the current sensor event.
+ *
+ * @returns True if the sensor event was obtained successfully, False
+ * otherwise.
+ */
+bool WipperSnapper_I2C_Driver_INA237::getEventCurrent(
+    sensors_event_t *currentEvent) {
+  currentEvent->current = _ina237->getCurrent_mA();
+  return true;
+}
+
+/**
+ * @brief   Get the raw (power) sensor event.
+ *
+ * @param   powerEvent  Pointer to the power sensor event.
+ *
+ * @returns True if the sensor event was obtained successfully, False
+ * otherwise.
+ */
+bool WipperSnapper_I2C_Driver_INA237::getEventRaw(sensors_event_t *powerEvent) {
+  powerEvent->data[0] = _ina237->getPower_mW();
+  return true;
+}

src/components/i2c/drivers/WipperSnapper_I2C_Driver_INA237.h

@@ -0,0 +1,95 @@
+/*!
+ * @file WipperSnapper_I2C_Driver_INA237.h
+ *
+ * Device driver for the INA237 DC Current and Voltage Monitor
+ * 16-bit ADC with ±0.3% gain error, ±50µV offset voltage
+ * Cost-effective version, lower precision than INA238
+ *
+ * Adafruit invests time and resources providing this open source code,
+ * please support Adafruit and open-source hardware by purchasing
+ * products from Adafruit!
+ *
+ * Copyright (c) Tyeth Gundry 2025 for Adafruit Industries.
+ *
+ * MIT license, all text here must be included in any redistribution.
+ *
+ */
+#ifndef WipperSnapper_I2C_Driver_INA237_H
+#define WipperSnapper_I2C_Driver_INA237_H
+
+#include "WipperSnapper_I2C_Driver.h"
+#include "Wippersnapper.h"
+
+// Forward declaration
+class Adafruit_INA237;
+
+/**************************************************************************/
+/*!
+    @brief  Class that provides a driver interface for a INA237 sensor.
+*/
+/**************************************************************************/
+class WipperSnapper_I2C_Driver_INA237 : public WipperSnapper_I2C_Driver {
+public:
+  /*******************************************************************************/
+  /*!
+      @brief    Constructor for a INA237 sensor.
+      @param    i2c
+                The I2C interface.
+      @param    sensorAddress
+                The 7-bit I2C address of the sensor.
+  */
+  /*******************************************************************************/
+  WipperSnapper_I2C_Driver_INA237(TwoWire *i2c, uint16_t sensorAddress);
+
+  /*******************************************************************************/
+  /*!
+      @brief    Destructor for an INA237 sensor.
+  */
+  /*******************************************************************************/
+  ~WipperSnapper_I2C_Driver_INA237();
+
+  /*******************************************************************************/
+  /*!
+      @brief    Initializes the INA237 sensor and begins I2C.
+      @returns  True if initialized successfully, False otherwise.
+  */
+  /*******************************************************************************/
+  bool begin();
+
+  /*******************************************************************************/
+  /*!
+      @brief    Reads a voltage sensor and converts the
+                reading into the expected SI unit.
+      @param    voltageEvent
+                voltage sensor reading, in volts.
+      @returns  True if the sensor event was obtained successfully, False
+                otherwise.
+  */
+  /*******************************************************************************/
+  bool getEventVoltage(sensors_event_t *voltageEvent);
+
+  /**
+   * @brief   Get the current sensor event.
+   *
+   * @param   currentEvent  Pointer to the current sensor event.
+   *
+   * @returns True if the sensor event was obtained successfully, False
+   * otherwise.
+   */
+  bool getEventCurrent(sensors_event_t *currentEvent);
+
+  /**
+   * @brief   Get the raw (power) sensor event.
+   *
+   * @param   powerEvent  Pointer to the power sensor event.
+   *
+   * @returns True if the sensor event was obtained successfully, False
+   * otherwise.
+   */
+  bool getEventRaw(sensors_event_t *powerEvent);
+
+protected:
+  Adafruit_INA237 *_ina237; ///< Pointer to INA237 sensor object
+};
+
+#endif // WipperSnapper_I2C_Driver_INA237