CodeMercs Forum

For those interested, I have written a LabView code to retrieve temperature and humidity from Sensirion's SHT75 sensor, through their Evaluation Kit EK-H5, which is in fact a modified version of IOWarrior24.

Note that you will need the modified version of the iowkit.dll windows library, that is ...

I am posting here a modified (improved?) version of Christof's code).

If someone knows how to read or write the status register of the SHT75 sensor I would be very grateful!!!

I don't get if I need to send a write IIC or read IIC command for that.

Thank you.



Option Explicit

Public Const IOW ...

I should add that the IOWarrior USB dongle power ups the sensor with a VDD=3.3V voltage (which is the optimum with respect to device calibration, according to Sensirion's datasheet). Hence a temperature coefficient of -39.66 should be used instead of -40.1 as written in Christof's code.

Also, I don ...

Thank you !

In the meantime I succeeded in understanding the hex sequences, I am posting the results below for future reference. Indeed, the repetition of &HC00101 seems unnecessary. I also think that the 70203 sequence is unnecessary.

Do you know why for sequence "30303" he chose to read off 3 ...

Hello Christof,

thanks for the code, but I don't understand the HEX sequences you're sending. Also, why do you have to repeat some sequences (such as HC00101)?

Can you "translate" them into USB HID Reports (should be 8 bytes long)?

They do no seem to correspond any of the sequences listed in the ...