a quick look at the data sheet yields :-
temperature would be ok using longs
humidity might be awkward since it uses unsigned longs that pbp cannot
pressure would be a challenge since its done...
I'm currently interfacing a BME280 digital humidity, pressure and temperature sensor (I²C) with a 18F2431:
https://www.bosch-sensortec.com/bst/products/all_products/bme280
Thanks Henrik, so Say A=200 B=300, C in this case will be 65535-100=65435, right? So if I take 65535 and minus it result, I should receive correct difference between A and B, right?
Oh and by the way, currently I don't have access to machine with PBP, what will happen if C=A-B and B is > A ? all variables are word length. I need to determine difference between A and B, but...
Menu
Re: Interfacing a BME280 on a PIC18F2431
Hi Richard,
Badger Today, 14:16Thanks for your reply, and I do agree (I thought I'd check first!).
This would have been used in an existing project as an upgrade to replace a DS18B20 - it looks like a good sensor...