How can i command an i2c digital potentiometer(DS1803) with Matlab Support Package for Arduino hardware ?

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Anthony Auvergnon
Anthony Auvergnon 2017-10-6
回答： Walter Roberson 2017-10-12
How can i command an i2c digital potentiometer(DS1803) with Matlab Support Package for Arduino hardware ?
Hello, I'm a french trainee and I'm working on temperature simulation thanks to digital potentiometer (DS 1803).
I command the potentiometer with an Arduino Mega, i succeeded with the arduino software but now I want to use Matlab.
I read instructions about the Matlab support package for arduino hardware, particulary i2c's instructions and i implemented these but there wasn't result..
Here is my code :
a=arduino('COM4','Mega2560');
dev=i2cdev(a,'0x28');
write(dev,'B10101001');
write(dev,100);
Can you help me ? regards.

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回答（2 个）

Manish Annappa
Manish Annappa 2017-10-11
1) Are you getting any error when you send the data to the device through i2cdev ? If so, post the error message here.
2) What is the expected behavior you see when you try to send the same data to the device outside of MATLAB (from Arduino software)?
Walter Roberson
Walter Roberson 2017-10-12
Replace
write(dev,'B10101001');
with
write(dev, uint8(bin2dec('10101001')) );

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