Revision 0:de50f9a71c22, committed 2019-03-04

Comitter:

EmbeddedSam

Date:

Mon Mar 04 14:48:45 2019 +0000

Commit message:

Initial Commit;

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OneWire_Methods.cpp	Mon Mar 04 14:48:45 2019 +0000
@@ -0,0 +1,175 @@
+#include "OneWire_Methods.h"
+#include "mbed.h"
+
+//Peripherals and typedefs
+extern DigitalInOut   one_wire_pin;
+
+unsigned char OneWire_ReadByte(void)
+{
+    unsigned char result=0;
+
+    for (int i = 0; i < 8; i++){    
+        result >>= 1;           // shift the result to get it ready for the next bit
+        // if result is one, then set MS bit
+        if (OneWire_ReadBit()){result |= 0x80;}    
+    }
+    return result;
+}
+
+void OneWire_WriteByte(unsigned char byte_to_write)
+{  
+    for (int i = 0; i<8; i++)     // Loop to write each bit in the byte, LS-bit first
+    {
+        OneWire_WriteBit(byte_to_write & 0x01);        
+        byte_to_write >>= 1;      // shift the data byte for the next bit
+    }
+}
+
+bool OneWire_ReadBit(void)
+{  
+    bool result;
+    one_wire_pin.output();
+    one_wire_pin = 0;
+    OneWire_Delay('A');
+    one_wire_pin.input();
+    one_wire_pin.mode(PullUp);
+    OneWire_Delay('E');
+    result = one_wire_pin.read();
+    OneWire_Delay('F');
+    return result;
+}
+
+void OneWire_WriteBit (bool bit_to_write){
+    
+    if (bit_to_write == 1)
+    {
+        // Write '1' bit
+        one_wire_pin.output();
+        one_wire_pin = 0;
+        OneWire_Delay('A');
+        one_wire_pin.input();
+        one_wire_pin.mode(PullUp);
+        OneWire_Delay('B');
+    }
+    else
+    {
+        one_wire_pin.output();
+        one_wire_pin = 0;
+        OneWire_Delay('C');
+        one_wire_pin.input();
+        OneWire_Delay('D');
+    }
+}
+bool OneWire_Reset (void)
+{
+    //Checks whether there is a device connected, returns true or false
+    //Debugging console output can be used if it is defined
+    bool result = false;
+    one_wire_pin.output();
+    one_wire_pin.write(0); //Pull the line high
+    OneWire_Delay('H');
+    one_wire_pin.input();
+    one_wire_pin.mode(PullUp);
+    OneWire_Delay('I');
+    if(one_wire_pin.read() == 0){ result = true;}
+    OneWire_Delay('J'); 
+    #ifdef Debugging
+        pc.printf("\n\rResult from reset: %d",result);
+    #endif
+    return result;
+}
+
+void OneWire_TestDelays(void)
+{
+    //Cycles the output pin through all the delays so you
+    //can see whether they are all the right timings.
+    one_wire_pin.output();
+    for(int i=0;i<6;i++){
+        one_wire_pin = !one_wire_pin; //toggle the pin 6 times to signal start of test at 100us
+        wait_us(100);   
+    }
+    OneWire_Delay('A');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('A');
+    one_wire_pin = !one_wire_pin;
+    
+    OneWire_Delay('B');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('B');
+    one_wire_pin = !one_wire_pin;
+    
+    OneWire_Delay('C');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('C');
+    one_wire_pin = !one_wire_pin;
+    
+    OneWire_Delay('D');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('D');
+    one_wire_pin = !one_wire_pin;
+    
+    OneWire_Delay('E');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('E');
+    one_wire_pin = !one_wire_pin;
+    
+    OneWire_Delay('F');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('F');
+    one_wire_pin = !one_wire_pin;
+    
+    OneWire_Delay('G');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('G');
+    one_wire_pin = !one_wire_pin;
+    
+    OneWire_Delay('H');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('H');
+    one_wire_pin = !one_wire_pin;
+    
+        
+    OneWire_Delay('I');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('I');
+    one_wire_pin = !one_wire_pin;
+    
+    OneWire_Delay('J');
+    one_wire_pin = !one_wire_pin;
+    OneWire_Delay('J');
+    one_wire_pin = !one_wire_pin;
+    
+}
+
+//Functions
+void OneWire_Delay(char letter)
+{
+    //Recommended delays from Maxim (standard speed not overdrive)
+    //https://www.maximintegrated.com/en/app-notes/index.mvp/id/126
+    
+    //Letter  Speed       Recommended (µs)
+    //A       Standard    6
+    //B       Standard    64
+    //C       Standard    60
+    //D       Standard    10
+    //E       Standard    9
+    //F       Standard    55
+    //G       Standard    0
+    //H       Standard    480
+    //I       Standard    70
+    //J       Standard    410
+    switch(letter)
+    {
+        case 'A': wait_us(1); break;
+        case 'B': wait_us(64); break;
+        case 'C': wait_us(60); break;
+        case 'D': wait_us(10); break;
+        case 'E': wait_us(5); break;
+        case 'F': wait_us(55); break;
+        case 'G': wait_us(0); break;
+        case 'H': wait_us(480); break;
+        case 'I': wait_us(70); break;
+        case 'J': wait_us(410); break;
+        default: break;
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OneWire_Methods.h	Mon Mar 04 14:48:45 2019 +0000
@@ -0,0 +1,7 @@
+void OneWire_Delay(char letter);
+void OneWire_TestDelays(void);
+bool OneWire_Reset(void);
+void OneWire_WriteBit(bool bit_to_write);
+bool OneWire_ReadBit(void);
+void OneWire_WriteByte(unsigned char byte_to_write);
+unsigned char OneWire_ReadByte(void);

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ds2781.cpp	Mon Mar 04 14:48:45 2019 +0000
@@ -0,0 +1,346 @@
+#include "ds2781.h"
+#include "OneWire_Methods.h"
+
+/* --------------------------------------------------------------------------
+   This file includes the functions needed to access and modify the registers
+   in a DS2781 using the 1-Wire protocol. The DS2781 is an IC that measures
+   voltage, current, accumulated current and temperature. It implements
+   capacity estimation algorithms for rechargeable batteries. However, this
+   file only includes routines to access the electrical parameters and not
+   the age-estimation registers.
+   --------------------------------------------------------------------------
+----------------------
+   NOTE_1: The functions that return parameters, do so in the units reported
+   in the description of each function. The user should implement the scaling
+   on his/her own.  
+   -------------------------------------------------------------------------- */
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : ReadVoltage                                                 *
+ * Overview : Returns the voltage measured at the VIN input of the DS2781      *
+ *            in units of 9.76mV                                               *
+ * Return type : 16-bit unsigned int                                           *
+ * Parameters : None                                                           *
+ * Time : < 4.3ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+int ReadVoltage (void)
+{
+    uint16_t result = 0;
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( READ_DATA );
+        OneWire_WriteByte( 0x0C );                      //Register Address
+        result  = OneWire_ReadByte()  << 8;     //MSB   
+        result |= OneWire_ReadByte() ;          //LSB
+    }
+    return (result >> 5);
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : ReadCurrent                                                 *
+ * Overview : Returns the current measured through Rsns external to DS2781 in  *
+ *            units of 1.5625uV/Rsns. Positive current indicates discharge     *
+ * Return type : 16-bit unsigned int                                           *
+ * Parameters : None                                                           *
+ * Time : < 4.3ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+uint16_t ReadCurrent (void)
+{
+    uint16_t result = 0;
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( READ_DATA );
+        OneWire_WriteByte( 0x0E );                      //Register Address
+        result  = ((uint16_t)OneWire_ReadByte() ) << 8;     //MSB   
+        result |= ((uint16_t)OneWire_ReadByte() );          //LSB
+    }
+    return result;
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : ReadAccumulatedCurrent                                      *
+ * Overview : Returns the accumulated current at the DS2781 in units of        *
+ *            1.526nVhr/Rsns                                                   *
+ * Return type : 32-bit unsigned long                                          *
+ * Parameters : None                                                           *
+ * Time : < 5.8ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+uint32_t ReadAccumulatedCurrent (void)
+{
+    unsigned long result = 0;
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( READ_DATA );
+        OneWire_WriteByte( 0x10 );                      //Register Address
+        result  = ((unsigned long)OneWire_ReadByte() ) << 24;       //MSB
+        result |= ((unsigned long)OneWire_ReadByte() ) << 16;
+        result |= ((unsigned long)OneWire_ReadByte() ) << 8;    
+        result |= ((unsigned long)OneWire_ReadByte() );         //LSB
+    }
+    return (result >>  4);
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : ResetAccumulatedCurrent                                     *
+ * Overview : Resets the accumulated current register at the DS2781            *
+ * Return type : Void                                                          *
+ * Parameters : None                                                           *
+ * Time : < 4.2ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+void ResetAccumulatedCurrent (void)
+{
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( WRITE_DATA );
+        OneWire_WriteByte( 0x10 );                      //Register Address
+        OneWire_WriteByte( 0x00 );                      //MSB
+        OneWire_WriteByte( 0x00 );                      //LSB
+    }
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : ReadNetAddress                                              *
+ * Overview : Returns the net address of the DS2781                            *
+ * Return type : 64-bit unsigned long long                                     *
+ * Parameters : None                                                           *
+ * Time : < 7.3ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+uint32_t ReadNetAddress (void)
+{
+    uint16_t result = 0;
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( READ_NETADDRESS );
+        //result  = ((Quint16_t)OneWire_ReadByte() );       //MSB
+        //result |= ((Quint16_t)OneWire_ReadByte() ) << 8;
+        //result |= ((Quint16_t)OneWire_ReadByte() ) << 16;
+        //result |= ((Quint16_t)OneWire_ReadByte() ) << 24;
+        //result |= ((Quint16_t)OneWire_ReadByte() ) << 32;
+        //result |= ((Quint16_t)OneWire_ReadByte() ) << 40;
+        //result |= ((Quint16_t)OneWire_ReadByte() ) << 48; 
+        //result |= ((Quint16_t)OneWire_ReadByte() ) <<56;          //LSB
+    }
+    return result;
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : ReadTemperature                                             *
+ * Overview : Returns the temperature measured by the DS2781 in units of       *
+ *            0.125°C                                                          *
+ * Return type : 16-bit unsigned int                                           *
+ * Parameters : None                                                           *
+ * Time : < 4.3ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+uint16_t ReadTemperature (void)
+{
+    uint16_t result = 0;
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( READ_DATA );
+        OneWire_WriteByte( 0x0A );                      //Register Address
+        result  = ((uint16_t)OneWire_ReadByte() ) << 8;     //MSB   
+        result |= ((uint16_t)OneWire_ReadByte() );          //LSB
+    }
+    return (result >> 5);
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : ReadCurrentOffset                                           *
+ * Overview : Returns the value of the current offset register of the DS2781   *
+ *            in units of 1.56uV/Rsns                                          *
+ * Return type : 8-bit uint8_t                                         *
+ * Parameters : None                                                           *
+ * Time : < 3.6ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+uint8_t ReadCurrentOffset (void)
+{
+    uint8_t result = 0;
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( READ_DATA );
+        OneWire_WriteByte( 0x7B );                      //Register Address
+        result  = OneWire_ReadByte();
+    }
+    return result;
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : WriteCurrentOffset                                          *
+ * Overview : Writes to the current offset register of the DS2781 in units of  *
+ *            1.56uV/Rsns                                                      *
+ * Return type : Void                                                          *
+ * Parameters : Byte to be written to the register in 2's complement           *
+ * Time : < 3.6ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+void  WriteCurrentOffset (uint8_t offset)
+{
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( WRITE_DATA );
+        OneWire_WriteByte( 0x7B );                      //Register Address
+        OneWire_WriteByte( offset );
+    }
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : AdjustCurrentOffset                                         *
+ * Overview : Adjusts the value of the current offset register of the DS2781   *
+ *            by taking into account the offset at no current. Should only     *
+ *            be called when the battery is supplying no current               *
+ * Return type : Void                                                          *
+ * Parameters : None                                                           *
+ * Time : < 3.62s                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+void AdjustCurrentOffset (void)
+{
+    char offset = 0;
+    
+    WriteCurrentOffset ( 0x0 );                     //Reset Current Offset Register
+
+    //Delay100MSx(36);                                //Wait 3.6s for current register to update
+
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( READ_DATA );
+        OneWire_WriteByte( 0x0F );                      //Current Register LSB
+        offset  = OneWire_ReadByte();   
+    }
+
+    offset = 256 - offset;                          //2's complement Negating
+
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( WRITE_DATA );
+        OneWire_WriteByte( 0x7B );                      //Current Offset Register
+        OneWire_WriteByte( offset );    
+    }
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : UpdateControlRegister                                       *
+ * Overview : Writes to the Control register of the DS2781 using the values    *
+ *            supplied as a byte parameter. Writes to EEPROM addresses are     *
+ *            ignored for up to 15ms after this function is called.            *
+ * Return type : Void                                                          *
+ * Parameters : None                                                           *
+ * Time : < 6.4ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+void UpdateControlRegister (uint8_t control)
+{
+    if( OneWire_Reset() == true )
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( WRITE_DATA );
+        OneWire_WriteByte( 0x60 );                      //Register Address
+        OneWire_WriteByte( control );
+    }
+
+    if( OneWire_Reset() == true )
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( COPY_DATA );
+        OneWire_WriteByte( 0x60 );                      //Register Address
+    }
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : ReadRAM                                                     *
+ * Overview : Reads a byte from the shadow RAM of the DS2781 at the given      *
+ *            memory address                                                   *
+ * Return type : 8-bit uint8_t                                         *
+ * Parameters : Address of register to be read                                 *
+ * Time : < 3.6ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+uint8_t ReadRAM (uint8_t addr)
+{
+    uint8_t result = 0;
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( READ_DATA );
+        OneWire_WriteByte( addr );                      //Register Address
+        result  = OneWire_ReadByte();
+    }
+    return result;
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : WriteRAM                                                    *
+ * Overview : Writes the given byte to the shadow RAM of the DS2781 at the     *
+ *            given memory address                                             *
+ * Return type : Void                                                          *
+ * Parameters : Byte to be written, address of register                        *
+ * Time : < 3.6ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+void WriteRAM (uint8_t byte, uint8_t addr)
+{
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( WRITE_DATA );
+        OneWire_WriteByte( addr );                      //Register Address
+        OneWire_WriteByte( byte );
+    }
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : CopyEEPROM                                                  *
+ * Overview : This function copies the contents of the EEPROM shadow RAM to    *
+ *            EEPROM cells for the EEPROM block containing thr given address.  *
+ *            Writes to EEPROM addresses are ignored for up to 15ms after this *
+ *            function is called.                                              *
+ * Return type : Void                                                          *
+ * Parameters : Memory address of shadow RAM to be copied                      *
+ * Time : < 2.9ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+void CopyEEPROM (uint8_t addr)
+{
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( COPY_DATA );
+        OneWire_WriteByte( addr );
+    }
+}
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ * Function name : RecallEEPROM                                                *
+ * Overview : This function copies the contents of the EEPROM cells to the     *
+ *            shadow RAM for the EEPROM block containing the given address.    *                                           *
+ * Return type : Void                                                          *
+ * Parameters : Memory address of EEPROM to be copied                          *
+ * Time : < 2.9ms                                                              *
+ *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+
+void RecallEEPROM (uint8_t addr)
+{
+    if( OneWire_Reset() == true)
+    {       
+        OneWire_WriteByte( SKIP_NETADDRESS );
+        OneWire_WriteByte( RECALL_DATA );
+        OneWire_WriteByte( addr );
+    }
+}
+/* EOF */

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ds2781.h	Mon Mar 04 14:48:45 2019 +0000
@@ -0,0 +1,32 @@
+#include "stdint.h"
+
+/* ***** net address commands ***** */
+#define READ_NETADDRESS 0x33
+#define SKIP_NETADDRESS 0xCC
+
+
+/* ***** function commands ***** */
+#define READ_DATA 0x69
+#define WRITE_DATA 0x6C
+#define COPY_DATA 0x48
+#define RECALL_DATA 0xB8
+#define LOCK_EEPROM 0x6A    //DO NOT USE
+
+
+/* ***** function prototypes ***** */
+/* Function details can be found in the .c file */
+int ReadVoltage (void);
+uint16_t ReadCurrent (void);
+uint32_t ReadAccumulatedCurrent (void);
+void ResetAccumulatedCurrent (void);
+uint32_t ReadNetAddress (void);
+uint16_t ReadTemperature (void);
+uint8_t ReadCurrentOffset (void);
+void  WriteCurrentOffset (uint8_t offset);
+void AdjustCurrentOffset (void);
+void UpdateControlRegister (uint8_t control);
+uint8_t ReadRAM (uint8_t addr);
+void WriteRAM (uint8_t byte, uint8_t addr);
+void CopyEEPROM (uint8_t addr);
+void RecallEEPROM (uint8_t addr);
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Mar 04 14:48:45 2019 +0000
@@ -0,0 +1,21 @@
+#include <mbed.h>
+#include "OneWire_Methods.h"
+#include "ds2781.h"
+
+Serial pc(USBTX, USBRX);
+DigitalInOut   one_wire_pin(PC_12);
+int VoltageReading, CurrentReading;
+float Voltage, Current;
+
+int main() {
+
+  while(1) {
+      VoltageReading = ReadVoltage();
+      Voltage = VoltageReading*0.00976; //Returns the voltage measured at the VIN input of the DS2781      *
+ *                                      //in units of 9.76mV 
+      CurrentReading = ReadCurrent();
+      Current = CurrentReading/6400.0; //Returns the current measured through Rsns external to DS2781 in  *
+ *                                     //units of 1.5625uV/Rsns. Positive current indicates discharge 
+      pc.printf("\n\rVoltage = %0.3f, Current= %0.3f", Voltage, Current);
+  }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Mar 04 14:48:45 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file