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/*------------------------------------------------------------------------------
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-- This file is a part of the libuc, microcontroler library
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-- Copyright (C) 2012, Alexis Jeandet
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program; if not, write to the Free Software
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-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-------------------------------------------------------------------------------
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-- Author : Alexis Jeandet
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-- Mail : alexis.jeandet@gmail.com
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-------------------------------------------------------------------------------*/
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#include <ina226.h>
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#include <stdio.h>
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#include <stddef.h>
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int ina226open(INA226_t *dev, i2c_t i2cdev, uint8_t A0, uint8_t A1, uint32_t shuntmOhm, uint32_t CurrentRangeuAmp)
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{
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if(dev != NULL)
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{
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dev->i2cdev=i2cdev;
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dev->devAddress = INA226_I2C_ADDRESS | (A0 & 1) | ((A1<<1) & 2);
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dev->shuntmOhm = shuntmOhm;
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dev->CurrentRangeuAmp = CurrentRangeuAmp;
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return 1;
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}
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return -1;
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}
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uint8_t ina226getID(INA226_t* dev)
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{
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if(dev != NULL)
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{
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char DATA[]={INA226_Die_ID_Reg};
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i2cwrite(dev->i2cdev,dev->devAddress,DATA,1);
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i2cread(dev->i2cdev,dev->devAddress,DATA,1);
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return DATA[0];
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}
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return -1;
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}
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int ina226calibrate(INA226_t* dev,uint32_t shuntmOhm, uint32_t CurrentRangeuAmp)
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{
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dev->shuntmOhm = shuntmOhm;
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dev->CurrentRangeuAmp = CurrentRangeuAmp;
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uint32_t CAL= (uint32_t)(5210000/(shuntmOhm*(CurrentRangeuAmp>>15)));
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char CMD[3];
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CMD[0]=INA226_Calibration_Reg;
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CMD[1]=(char)(0xff & (CAL>>8));
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CMD[2]=(char)(0xff & CAL);
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i2cwrite(dev->i2cdev,dev->devAddress,CMD,3);
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}
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uint32_t ina226getBusVoltage(INA226_t *dev)
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{
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char CMD[2];
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CMD[0]=INA226_Bus_Voltage_Reg;
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i2cwrite(dev->i2cdev,dev->devAddress,CMD,1);
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i2cread(dev->i2cdev,dev->devAddress,CMD,2);
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uint32_t busVoltage= CMD[0];
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busVoltage = (busVoltage<<8) + CMD[1];
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busVoltage*= 1250;
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return busVoltage;
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}
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uint32_t ina226getPower(INA226_t *dev)
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{
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char CMD[2];
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CMD[0]=INA226_Power_Reg;
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i2cwrite(dev->i2cdev,dev->devAddress,CMD,1);
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i2cread(dev->i2cdev,dev->devAddress,CMD,2);
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uint32_t power= CMD[0];
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power = (power<<8) + CMD[1];
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power*= ((CurrentRangeuAmp>>15)*25);
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return busVoltage;
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}
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