0.1.4 INA226

Author: RobTillaart

libraries/INA226/INA226.cpp

@@ -1,6 +1,6 @@
 //    FILE: INA266.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.3
+// VERSION: 0.1.4
 //    DATE: 2021-05-18
 // PURPOSE: Arduino library for INA266 power sensor
 //     URL: https://github.com/RobTillaart/INA226
@@ -10,9 +10,9 @@
 //  0.1.1   2021-06-21  improved calibration + added functions
 //  0.1.2   2021-06-22  add check of parameters of several functions + unit tests
 //                      add getShunt() , getMaxCurrent()
-//  0.1.3   2021-06-    add getCurrentLSB_uA() + improve examples
+//  0.1.3   2021-06-22  add getCurrentLSB_uA() + improve examples
 //                      fix for calibration
-//
+//  0.1.4   2021-08-07  fix getCurrent()
 
 #include "INA226.h"
 
@@ -103,7 +103,14 @@ float INA226::getPower()
 
 float INA226::getCurrent()
 {
-  float val = _readRegister(INA226_CURRENT);
+  uint16_t val = _readRegister(INA226_CURRENT);
+  if (val & 0x8000)
+  {
+    val = val & 0x7FFF;
+    val = val ^ 0x7FFF;
+    val++;
+    return val * -_current_LSB;
+  }
   return val * _current_LSB;
 }
 

libraries/INA226/INA226.h

@@ -1,7 +1,7 @@
 #pragma once
 //    FILE: INA266.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.3
+// VERSION: 0.1.4
 //    DATE: 2021-05-18
 // PURPOSE: Arduino library for INA266 power sensor
 //     URL: https://github.com/RobTillaart/INA226
@@ -14,7 +14,7 @@
 #include "Wire.h"
 
 
-#define INA226_LIB_VERSION              (F("0.1.3"))
+#define INA226_LIB_VERSION              (F("0.1.4"))
 
 
 // set by setAlertRegister

libraries/INA226/examples/INA226_demo_2/INA226_demo_2.ino

@@ -1,7 +1,7 @@
 //
 //    FILE: INA226_demo_2.ino
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.1
+// VERSION: 0.1.4
 // PURPOSE: demo
 //    DATE: 2021-06-21
 //     URL: https://github.com/RobTillaart/INA226
@@ -17,6 +17,8 @@ void setup()
 {
   Serial.begin(115200);
   Serial.println(__FILE__);
+  Serial.print("INA226_LIB_VERSION: ");
+  Serial.println(INA226_LIB_VERSION);
 
   Wire.begin();
   if (!INA.begin() )
@@ -25,10 +27,13 @@ void setup()
   }
 
   Serial.println();
-  Serial.print("MAN:\t");
-  Serial.println(INA.getManufacturerID(), HEX);
-  Serial.print("DIE:\t");
-  Serial.println(INA.getDieID(), HEX);
+  //  Serial.print("AVG:\t");
+  //  Serial.println((int)INA.getAverage());
+  INA.setAverage(2);
+  //  Serial.print("MAN:\t");
+  //  Serial.println(INA.getManufacturerID(), HEX);
+  //  Serial.print("DIE:\t");
+  //  Serial.println(INA.getDieID(), HEX);
   delay(100);
 
   INA.setMaxCurrentShunt(1, 0.002);
@@ -39,6 +44,7 @@ void setup()
 void loop()
 {
   Serial.println("\nPOWER2 = busVoltage x current");
+  Serial.println(" V\t mA \t mW \t mW \t mW");
   Serial.println("BUS\tCURRENT\tPOWER\tPOWER2\tDELTA");
   for (int i = 0; i < 20; i++)
   {
@@ -57,7 +63,7 @@ void loop()
     Serial.print("\t");
     Serial.print((bv * cu) - po, 2);
     Serial.println();
-    delay(500);
+    delay(50);
   }
 }
 

libraries/INA226/library.json

@@ -15,7 +15,7 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/INA226.git"
   },
-  "version": "0.1.3",
+  "version": "0.1.4",
   "license": "MIT",
   "frameworks": "arduino",
   "platforms": "*"

libraries/INA226/library.properties

@@ -1,5 +1,5 @@
 name=INA226
-version=0.1.3
+version=0.1.4
 author=Rob Tillaart <[email protected]>
 maintainer=Rob Tillaart <[email protected]>
 sentence=Arduino library for INA226 power sensor