ina226.c
114 lines
| 3.4 KiB
| text/x-c
|
CLexer
jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | /*------------------------------------------------------------------------------ | ||
| -- This file is a part of the libuc, microcontroler library | ||||
| -- Copyright (C) 2012, Alexis Jeandet | ||||
| -- | ||||
| -- This program is free software; you can redistribute it and/or modify | ||||
| -- it under the terms of the GNU General Public License as published by | ||||
| -- the Free Software Foundation; either version 3 of the License, or | ||||
| -- (at your option) any later version. | ||||
| -- | ||||
| -- This program is distributed in the hope that it will be useful, | ||||
| -- but WITHOUT ANY WARRANTY; without even the implied warranty of | ||||
| -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||||
| -- GNU General Public License for more details. | ||||
| -- | ||||
| -- You should have received a copy of the GNU General Public License | ||||
| -- along with this program; if not, write to the Free Software | ||||
| -- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||||
| ------------------------------------------------------------------------------- | ||||
| -- Author : Alexis Jeandet | ||||
| -- Mail : alexis.jeandet@gmail.com | ||||
| -------------------------------------------------------------------------------*/ | ||||
| #include <ina226.h> | ||||
| #include <stdio.h> | ||||
| #include <stddef.h> | ||||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r30 | |||
| int ina226open(INA226_t *dev, i2c_t i2cdev, uint16_t config, uint8_t A0, uint8_t A1, uint32_t shuntmOhm, uint32_t CurrentRangeuAmp) | ||||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | { | ||
| if(dev != NULL) | ||||
| { | ||||
| dev->i2cdev=i2cdev; | ||||
| dev->devAddress = INA226_I2C_ADDRESS | (A0 & 1) | ((A1<<1) & 2); | ||||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r30 | printf("dev->devAddress = %x\n\r",dev->devAddress); | ||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | dev->shuntmOhm = shuntmOhm; | ||
| dev->CurrentRangeuAmp = CurrentRangeuAmp; | ||||
jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | ina226setReg(dev,INA226_Configuration_Reg,0x8000); | ||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r30 | ina226setReg(dev,INA226_Configuration_Reg,config); | ||
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jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | return ina226calibrate(dev,shuntmOhm,CurrentRangeuAmp); | ||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | } | ||
| return -1; | ||||
| } | ||||
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jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | uint16_t ina226getID(INA226_t* dev) | ||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | { | ||
| if(dev != NULL) | ||||
| { | ||||
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jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | uint16_t id=ina226getReg(dev,INA226_Die_ID_Reg); | ||
| return id; | ||||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | } | ||
| return -1; | ||||
| } | ||||
| int ina226calibrate(INA226_t* dev,uint32_t shuntmOhm, uint32_t CurrentRangeuAmp) | ||||
| { | ||||
| dev->shuntmOhm = shuntmOhm; | ||||
| dev->CurrentRangeuAmp = CurrentRangeuAmp; | ||||
| uint32_t CAL= (uint32_t)(5210000/(shuntmOhm*(CurrentRangeuAmp>>15))); | ||||
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jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | return ina226setReg(dev,INA226_Calibration_Reg,(uint16_t)CAL); | ||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | } | ||
| uint32_t ina226getBusVoltage(INA226_t *dev) | ||||
| { | ||||
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jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | uint32_t busVoltage= ina226getReg(dev,INA226_Bus_Voltage_Reg); | ||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | busVoltage*= 1250; | ||
| return busVoltage; | ||||
| } | ||||
| uint32_t ina226getPower(INA226_t *dev) | ||||
| { | ||||
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jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | uint32_t power= ina226getReg(dev,INA226_Power_Reg); | ||
| power*= ((dev->CurrentRangeuAmp>>15)*25); | ||||
| return power; | ||||
| } | ||||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r30 | int32_t ina226getCurrent(INA226_t *dev) | ||
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jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | { | ||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r30 | int32_t current= ina226getReg(dev,INA226_Current_Reg); | ||
| current<<=16; | ||||
| current>>=16; | ||||
| current = current*(dev->CurrentRangeuAmp>>15); | ||||
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jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | return current; | ||
| } | ||||
| uint16_t ina226getReg(INA226_t* dev,char reg) | ||||
| { | ||||
| if(dev != NULL) | ||||
| { | ||||
| char DATA[2]; | ||||
| DATA[0]=reg; | ||||
| i2cwrite(dev->i2cdev,dev->devAddress,DATA,1); | ||||
| i2cread(dev->i2cdev,dev->devAddress,DATA,2); | ||||
| uint16_t val=DATA[0]; | ||||
| val=(val<<8)+DATA[1]; | ||||
| return val; | ||||
| } | ||||
| return -1; | ||||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | } | ||
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jeandet@PC-DE-JEANDET.lab-lpp.local
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r29 | int ina226setReg(INA226_t* dev,char reg,int16_t value) | ||
| { | ||||
| if(dev != NULL) | ||||
| { | ||||
| char DATA[3]; | ||||
| DATA[0]=INA226_Calibration_Reg; | ||||
| DATA[1]=(char)(0xff & (value>>8)); | ||||
| DATA[2]=(char)(0xff & value); | ||||
| if(3==i2cwrite(dev->i2cdev,dev->devAddress,DATA,3))return 1; | ||||
| } | ||||
| return -1; | ||||
| } | ||||
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jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r28 | |||