Search found 5 matches

by jmmelko
Fri May 17, 2013 5:50 pm
Forum: IO-Warrior English
Topic: Labview code for Sensirion SHT75 and EK-H5 Evaluation kit
Replies: 3
Views: 14518

Labview code for Sensirion SHT75 and EK-H5 Evaluation kit

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 ship...
by jmmelko
Fri May 17, 2013 5:41 pm
Forum: IO-Warrior English
Topic: Excel VBA for IOWarrior and Sensirion SHT7x
Replies: 11
Views: 24074

Re: Excel VBA for IOWarrior and Sensirion SHT7x

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_PIPE_IO_...
by jmmelko
Wed May 15, 2013 10:59 am
Forum: IO-Warrior English
Topic: Excel VBA for IOWarrior and Sensirion SHT7x
Replies: 11
Views: 24074

Re: Excel VBA for IOWarrior and Sensirion SHT7x

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'...
by jmmelko
Tue May 14, 2013 4:15 pm
Forum: IO-Warrior English
Topic: Excel VBA for IOWarrior and Sensirion SHT7x
Replies: 11
Views: 24074

Re: Excel VBA for IOWarrior and Sensirion SHT7x

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 r...
by jmmelko
Tue May 14, 2013 1:34 pm
Forum: IO-Warrior English
Topic: Excel VBA for IOWarrior and Sensirion SHT7x
Replies: 11
Views: 24074

Re: Excel VBA for IOWarrior and Sensirion SHT7x

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 ...