File content as of revision 0:eee9c8ba72ff:

/*
    'Borrowed' from Adafruit's INA219 libarary. Licensed under the BSD license.
    
    https://github.com/adafruit/Adafruit_INA219
*/

// Hopefully Adafruit won't mind if I borrow this...

/*=========================================================================
    I2C ADDRESS/BITS
    -----------------------------------------------------------------------*/
#define INA219_ADDRESS                         (0x40)    // 1000000 (A0+A1=GND)
#define INA219_READ                            (0x01)
/*=========================================================================*/

/*=========================================================================
    CONFIG REGISTER (R/W)
    -----------------------------------------------------------------------*/
#define INA219_REG_CONFIG                      (0x00)
/*---------------------------------------------------------------------*/
#define INA219_CONFIG_RESET                    (0x8000)  // Reset Bit

#define INA219_CONFIG_BVOLTAGERANGE_MASK       (0x2000)  // Bus Voltage Range Mask
#define INA219_CONFIG_BVOLTAGERANGE_16V        (0x0000)  // 0-16V Range
#define INA219_CONFIG_BVOLTAGERANGE_32V        (0x2000)  // 0-32V Range

#define INA219_CONFIG_GAIN_MASK                (0x1800)  // Gain Mask
#define INA219_CONFIG_GAIN_1_40MV              (0x0000)  // Gain 1, 40mV Range
#define INA219_CONFIG_GAIN_2_80MV              (0x0800)  // Gain 2, 80mV Range
#define INA219_CONFIG_GAIN_4_160MV             (0x1000)  // Gain 4, 160mV Range
#define INA219_CONFIG_GAIN_8_320MV             (0x1800)  // Gain 8, 320mV Range

#define INA219_CONFIG_BADCRES_MASK             (0x0780)  // Bus ADC Resolution Mask
#define INA219_CONFIG_BADCRES_9BIT             (0x0080)  // 9-bit bus res = 0..511
#define INA219_CONFIG_BADCRES_10BIT            (0x0100)  // 10-bit bus res = 0..1023
#define INA219_CONFIG_BADCRES_11BIT            (0x0200)  // 11-bit bus res = 0..2047
#define INA219_CONFIG_BADCRES_12BIT            (0x0400)  // 12-bit bus res = 0..4097

#define INA219_CONFIG_SADCRES_MASK             (0x0078)  // Shunt ADC Resolution and Averaging Mask
#define INA219_CONFIG_SADCRES_9BIT_1S_84US     (0x0000)  // 1 x 9-bit shunt sample
#define INA219_CONFIG_SADCRES_10BIT_1S_148US   (0x0008)  // 1 x 10-bit shunt sample
#define INA219_CONFIG_SADCRES_11BIT_1S_276US   (0x0010)  // 1 x 11-bit shunt sample
#define INA219_CONFIG_SADCRES_12BIT_1S_532US   (0x0018)  // 1 x 12-bit shunt sample
#define INA219_CONFIG_SADCRES_12BIT_2S_1060US  (0x0048)  // 2 x 12-bit shunt samples averaged together
#define INA219_CONFIG_SADCRES_12BIT_4S_2130US  (0x0050)  // 4 x 12-bit shunt samples averaged together
#define INA219_CONFIG_SADCRES_12BIT_8S_4260US  (0x0058)  // 8 x 12-bit shunt samples averaged together
#define INA219_CONFIG_SADCRES_12BIT_16S_8510US (0x0060)  // 16 x 12-bit shunt samples averaged together
#define INA219_CONFIG_SADCRES_12BIT_32S_17MS   (0x0068)  // 32 x 12-bit shunt samples averaged together
#define INA219_CONFIG_SADCRES_12BIT_64S_34MS   (0x0070)  // 64 x 12-bit shunt samples averaged together
#define INA219_CONFIG_SADCRES_12BIT_128S_69MS  (0x0078)  // 128 x 12-bit shunt samples averaged together

#define INA219_CONFIG_MODE_MASK                (0x0007)  // Operating Mode Mask
#define INA219_CONFIG_MODE_POWERDOWN           (0x0000)
#define INA219_CONFIG_MODE_SVOLT_TRIGGERED     (0x0001)
#define INA219_CONFIG_MODE_BVOLT_TRIGGERED     (0x0002)
#define INA219_CONFIG_MODE_SANDBVOLT_TRIGGERED (0x0003)
#define INA219_CONFIG_MODE_ADCOFF              (0x0004)
#define INA219_CONFIG_MODE_SVOLT_CONTINUOUS    (0x0005)
#define INA219_CONFIG_MODE_BVOLT_CONTINUOUS    (0x0006)
#define INA219_CONFIG_MODE_SANDBVOLT_CONTINUOUS (0x0007)
/*=========================================================================*/

/*=========================================================================
    SHUNT VOLTAGE REGISTER (R)
    -----------------------------------------------------------------------*/
#define INA219_REG_SHUNTVOLTAGE                (0x01)
/*=========================================================================*/

/*=========================================================================
    BUS VOLTAGE REGISTER (R)
    -----------------------------------------------------------------------*/
#define INA219_REG_BUSVOLTAGE                  (0x02)
/*=========================================================================*/

/*=========================================================================
    POWER REGISTER (R)
    -----------------------------------------------------------------------*/
#define INA219_REG_POWER                       (0x03)
/*=========================================================================*/

/*=========================================================================
    CURRENT REGISTER (R)
    -----------------------------------------------------------------------*/
#define INA219_REG_CURRENT                     (0x04)
/*=========================================================================*/

/*=========================================================================
    CALIBRATION REGISTER (R/W)
    -----------------------------------------------------------------------*/
#define INA219_REG_CALIBRATION                 (0x05)
/*=========================================================================*/