added features

Arduino-MAX17055_Driver.cpp

@@ -70,6 +70,25 @@ MAX17055::MAX17055(uint16_t batteryCapacity)
 	writeReg16Bit(DesignCap, batteryCapacity*2);
 }
 // Public Methods
+bool MAX17055::init()
+{
+    Wire.beginTransmission(I2CAddress);
+    byte error = Wire.endTransmission();
+    if (error == 0) //Device Acknowledged
+    {
+        bool POR = readReg16Bit(Status)&0x0002;
+        if (POR)
+        {
+            setCapacity(2600); //default values
+            setResistSensor(0.01);  //default values
+            //TODO: load configs as needed
+            writeReg16Bit(Status,readReg16Bit(Status)&0xFFFD); //reset POR Status
+        }
+        return true;
+    }
+    return false; //device not found
+}
+
 void MAX17055::setCapacity(uint16_t batteryCapacity)
 {
 	//calcuation based on AN6358 page 13 figure 1.3 for Capacity, but reversed to get the register value 
@@ -93,7 +112,13 @@ float MAX17055::getResistSensor()
 	return resistSensor;
 }
 
-float MAX17055::getInstantaneousCurrent()
+float MAX17055::getAverageCurrent() //+ve current is charging, -ve is discharging
+{
+   	int16_t current_raw = readReg16Bit(AvgCurrent);
+	return current_raw * current_multiplier_mV;
+}
+
+float MAX17055::getInstantaneousCurrent() //+ve current is charging, -ve is discharging
 {
    	int16_t current_raw = readReg16Bit(Current);
 	return current_raw * current_multiplier_mV;
@@ -117,6 +142,21 @@ float MAX17055::getTimeToEmpty()
 	return TTE_raw * time_multiplier_Hours;
 }
 
+float MAX17055::getTemperature() {
+    uint16_t temp_raw= readReg16Bit(Temperature);
+    return temp_raw * percentage_multiplier;
+}
+
+float MAX17055::getAge() {
+    uint16_t age_raw= readReg16Bit(Age);
+    return age_raw * percentage_multiplier ; //Return value is % age, with 100% being a fully healthy, new battery.
+}
+
+bool MAX17055::getPresent() { //TODO: Doesn't seem to detect battery removal/re-insertion
+    uint16_t pres_raw= readReg16Bit(Status) & 8; //returns just the 4th bit, with 0 = battery present, 1 = battery missing
+    return !pres_raw; //hence we invert to return true if battery is present
+}
+
 // Private Methods
 
 void MAX17055::writeReg16Bit(uint8_t reg, uint16_t value)
@@ -140,4 +180,4 @@ uint16_t MAX17055::readReg16Bit(uint8_t reg)
   value  = Wire.read();
   value |= (uint16_t)Wire.read() << 8;      // value low byte
   return value;
-}
+}

Arduino-MAX17055_Driver.h

@@ -61,13 +61,16 @@
 // Currently, code only displays register values in hexadecimal format. User needs to state which register they're addressing by hand
 // in the ino file.
 
+
 class MAX17055
 {
   public:
     // register addresses 
     enum regAddr
     {
       Status      = 0x00, //Maintains all flags related to alert thresholds and battery insertion or removal.
+      Age         = 0x07, //calculated percentage value of capacity compared to original design capacity.
+      Temperature = 0x08, //Temperature of MAX17055 chip
       VCell       = 0x09, //VCell reports the voltage measured between BATT and CSP.
       AvgVCell    = 0x19, //The AvgVCell register reports an average of the VCell register readings. 
       Current     = 0x0A, //Voltage between the CSP and CSN pins, and would need to convert to current
@@ -84,6 +87,8 @@ class MAX17055
     MAX17055(void); //Constructor prototype
     MAX17055(uint16_t batteryCapacity); //Constructor allowing user to set capacity of battery
 
+    bool  init();
+    float getAverageCurrent();
     float getInstantaneousCurrent();
     float getInstantaneousVoltage();
     void  setCapacity(uint16_t batteryCapacity);
@@ -92,6 +97,9 @@ class MAX17055
     float getResistSensor(); 
     float getSOC(); //SOC = State of Charge 
     float getTimeToEmpty();
+    float getTemperature();
+    float getAge();
+    bool  getPresent();
 
 private:
     //variables

keywords.txt

@@ -5,19 +5,23 @@
 #######################################
 # Class (KEYWORD1)
 #######################################
+MAX17055		KEYWORD1
 
 #######################################
 # Methods and Functions (KEYWORD2)
 #######################################
-
+getAverageCurrent	KEYWORD2
 getInstantaneousCurrent	KEYWORD2
 getInstantaneousVoltage	KEYWORD2
-setCapacity	KEYWORD2
-getCapacity	KEYWORD2
-setResistSensor	KEYWORD2
-getResistSensor	KEYWORD2
-getSOC	KEYWORD2
-getTimeToEmpty	KEYWORD2
+setCapacity		KEYWORD2
+getCapacity		KEYWORD2
+setResistSensor		KEYWORD2
+getResistSensor		KEYWORD2
+getSOC			KEYWORD2
+getTimeToEmpty		KEYWORD2
+getTemperature  	KEYWORD2
+getAge			KEYWORD2
+getPresent		KEYWORD2
 
 #######################################
 # Constants (LITERAL1)