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BMP180 Temperature (and consequently Pressure) Error ( > about 40 °C ) #1696

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averelon opened this issue Aug 7, 2020 · 2 comments
Open

BMP180 Temperature (and consequently Pressure) Error ( > about 40 °C ) #1696

averelon opened this issue Aug 7, 2020 · 2 comments
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Bug Class:Barometer Good First Issue Hardware Required

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@averelon
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@averelon averelon commented Aug 7, 2020

The uncompensated temperature of the BMP180 is incorrectly converted to a 16-bit signed value, instead of a 32-bit signed value (long). Since the data is 16-bits wide and can therefore not be negative, the easy fix would be to do the following:

sip.js(1128): uncompensated = uint16(data[0], data[1]);

Please see page 15 of the manual of the BMP180 chip:
https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMP180-DS000.pdf
@dtex
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@dtex dtex commented Aug 22, 2020

It appears @averlon is spot on, but I don't have the hardware to confirm. This is a great first issue for anyone who has access to a BMP180.
@Godplayer68
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@Godplayer68 Godplayer68 commented Oct 21, 2021 •
edited

I want to create a utopia
with the BMP180
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Labels
Bug Class:Barometer Good First Issue Hardware Required
3 participants
@dtex @averelon @Godplayer68