i try to setup the LPSTK-CC1352R Launchpad with Node RED and a bluetooth connection. the inbuild sensor is a hdc2080 sensor. I'm not a electronic engineer so the datasheets are a bit confusing to me. I made it to the point, where i have a connection to the MCU via bluetooth and get every second the temperature values. Unfortunately i get these values as a 4 dimensional hex array.
[04 4a d5 41]
[dc 44 d5 41]
[b4 3f d5 41]
[8c 3a d5 41]
...
here is a example of values.
I tried a lot to convert them into a simple temperature value but without success. I even found a kind of tutorial, but without success.
Could anyone help me with the convertion?
Thank you :)
You have to reorder the hex values from right to left, because the last hex value is not changing, which means it has to be little endian.
4hex are 32-bit
converted to IEEE-754 Floating Point:
[41 d5 4a 04] = 26.6611404419
[41 d5 44 dc] = 26.6586227417
[41 d5 3f b4] = 26.6561050415
[41 d5 3a 8c] = 26.6535873413