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INA219 Current Sensor Integration with MATLAB

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Jayden Hasemann
Jayden Hasemann 2017-9-10
评论： Gongyan Du 2020-5-18
Hi There,
I am trying to use a INA219 current sensor to obtain the voltage and current and thus power from a Solar Panel. This chip works with an arduino. I have coded in arduino and got the values i require however when I try to read these values on MATLAB I cannot get it to work.
The Code that I have written is Here:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clc clear all
a = arduino;
INA219 = '0x40';
INA219_ADC_CH0 = '40'; % getBusVoltage_V
INA219_ADC_CH1 = '41'; % getVoltage_mV
INA219_ADC_CH3 = '43'; % getCurrent_mA
i2c = i2cdev(a,INA219);
disp(['getBusVoltage_V ', 'getVoltage_mV', 'getCurrent_mA']);
while 1
getBusVoltage_V = read_adc(i2c,hex2dec(INA219_ADC_CH0));
pause(0.5);
getVoltage_mV = read_adc(i2c,hex2dec(INA219_ADC_CH1));
pause(0.5);
getCurrent_mA = read_adc(i2c,hex2dec(INA219_ADC_CH3));
pause(0.5);
disp([getBusVoltage_V,getVoltage_mV,getCurrent_mA]);
end
function adc = read_adc(dev,config)
write(dev,config);
read(dev, 3);
out = read(dev, 3);
adc = out;
end
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Where the output is:
60 0 0
31 3 0
255 255 255.
I was expecting an output of roughly:
2.46 0.03 0.07
*obtained from my arduino code.
I cannot seem to find where I've gone wrong, perhaps my limited knowledge in the area. Any help you could provide to rectify this would be great.
Regards,
Jayden
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Raul Ballesteros
Raul Ballesteros 2019-5-28
I have the same problem If find the solution Please share the vos es Thanks

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回答（1 个）

Gongyan Du
Gongyan Du 2020-5-18
Have you solved this problem, can you share it?

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