BME280 Data to test Calculations

[Badger]

Hello,

Could someone please send me some the raw calibration values, and the raw register values for the Temperature/Pressure/Humidity for the BME280.

With also the correct calculated Temperature/Pressure/Humidity readings?

I would like to test my calculations as I think my pressure calculations are incorrect.

Thanks!

[Badger]

Hi o_o

Thank you for your reply, here are the register numbers with the corresponding returned values:

<code>

Calibration
Register        Returned Value
0x88               0x6C
0x89               0x6E
0x8A               0x77
0x8B               0x66
0x8C               0x32
0x8D               0x00
0x8E               0xA8
0x8F               0x92
0x90               0x27
0x91               0xD5
0x92               0xD0
0x93               0x0B
0x94               0x6F
0x95               0x18
0x96               0xCA
0x97               0xFF
0x98               0xF9
0x99               0xFF
0x9A               0xAC
0x9B               0x26
0x9C               0x0A
0x9D               0xD8
0x9E               0xBD
0x9F               0x10
0xA1               0x4B
0xE1               0x65
0xE2               0x01
0xE3               0x00
0xE4               0x14
0xE5               0x0B
0xE6               0x00
0xE7               0x1E

Temperature/Pressure/Humidity
Register        Returned Value
0xF7               0x55
0xF8               0x33
0xF9               0x80
0xFA               0x81
0xFB               0x7F
0xFC               0xB0
0xFD               0x79
0xFE               0x13

+24.44°C
1148.38hPa
54.17%rH

Temperature/Pressure/Humidity
Register        Returned Value
0xF7               0x54
0xF8               0x5F
0xF9               0x50
0xFA               0x80
0xFB               0xCD
0xFC               0xB0
0xFD               0x7F
0xFE               0x17

+23.55°C
1195.33hPa
62.47%rH

</code>

Thank you for your help.

[Badger]

Hi,

So I think I have figured out the problem, the calibration values were not being treated as signed (the ones that should be).

So could someone verify these results for me please? (The Raw Calibration Values are the same as above).

Temperature/Pressure/Humidity
Register Returned Value
0xF7       0x55
0xF8       0x33
0xF9       0x80
0xFA       0x81
0xFB       0x7F
0xFC       0xB0
0xFD       0x79
0xFE       0x13

+24.44°C
996.21hPa
54.17%rH

Temperature/Pressure/Humidity
Register Returned Value
0xF7       0x54
0xF8       0x5F
0xF9       0x50
0xFA       0x80
0xFB       0xCD
0xFC       0xB0
0xFD       0x7F
0xFE       0x17

+23.55°C
1000.40hPa
62.47%rH

Thanks!

[Badger]

Hi,

Do my calculations look correct using the corresponding calibration and Temperature/Pressure/Humidity readings?

Thanks!

[o_o]

Hey badger,

I took a lot of time and updated the calculation spreadsheet so you can validate it on your own using hexadecimal values.

Enjoy!

EDIT: Foudn a tiny mistake in the calculation sheet, corrected version attached