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BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 10:49 am
by Xbiotec
I checked with logic analyser and it show that BMP280 component is reading both Pressure and Temperature when request is to read pressure only. But only pressure data are store.
- Pressure read.jpg (34.58 KiB) Viewed 6792 times
- Pressure R.jpg (17.21 KiB) Viewed 6792 times
while for the temperature it is good, only the temperature is read.
- Temperature read.jpg (38.63 KiB) Viewed 6792 times
Can be good to have a new macro able to read both temperature and pressure in same time
Re: BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 11:18 am
by medelec35
Hi Seb.
Thanks for the good spot.
I have updated the BMP280 to just read pressure and attached the component for you to try.
The comment should be placed in C:\ProgramData\MatrixTSL\FlowcodeV9\Components
If you are happy with the component, I will arrange for it to be pushed onto the update system.
Re: BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 12:02 pm
by Xbiotec
Hi,
It work's but why there is 5 Val now?
- 5 Val.jpg (37.72 KiB) Viewed 6784 times
Re: BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 1:23 pm
by kersing
medelec35 wrote: ↑Thu Feb 17, 2022 11:18 am
I have updated the BMP280 to just read pressure
Is that a valid option? I seem to recall the temperature is required for compensation calculations but may-be I’m mixing up devices…
Re: BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 2:10 pm
by Xbiotec
Need Pressure, altitude pressure and temperature of course.
As you can see on the picture I sent to you there is 5 Val form Val0 to Val5, why ?
- 5 Val.jpg (44.89 KiB) Viewed 6775 times
Re: BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 2:15 pm
by Xbiotec
I understand your meaning Now !
Is that a valid option? I seem to recall the temperature is required for compensation calculations but may-be I’m mixing up devices…
I'm checking !
Re: BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 2:24 pm
by Xbiotec
You are right kersing, to calculate pressure, need Temperature too.
So finally need both pressure and temperature to calculate pressure !
Sorry Medelec
- Capture d’écran 2022-02-17 152344.jpg (63.58 KiB) Viewed 6774 times
!
Re: BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 4:13 pm
by medelec35
kersing wrote: ↑Thu Feb 17, 2022 1:23 pm
Is that a valid option?
Thanks Jac.
Thinking about it pressure is related to temperature, so it makes sense to keep it in.
lucibel wrote: ↑Thu Feb 17, 2022 2:10 pm
As you can see on the picture I sent to you there is 5 Val form Val0 to Val5, why ?
5
That is odd.
I did not change it from how is was.
I'm looking into it.
Re: BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 4:33 pm
by Xbiotec
this is mine
- Capture d’écran 2022-02-17 173229.jpg (5.01 KiB) Viewed 6767 times
- Capture d’écran 2022-02-17 172545.jpg (15 KiB) Viewed 6767 times
Re: BMP280 when reading pressure, it's reading Temp and pressure
Posted: Thu Feb 17, 2022 4:38 pm
by Xbiotec
This what you asked me to try end of January then you updated the library with version 9
Re: ESP32 TTGO+ BMP280 temp sensor BUIL FAILED
Post by medelec35 » Mon Jan 31, 2022 10:56 pm
Hi Seb,
Thank you for the spot.
Can you give the attached component a try, please?
In file explorer address bar, paste this:
CODE: SELECT ALL
C:\ProgramData\MatrixTSL\FlowcodeV9\Components
Save the attached file into the above hidden folder.
Just select ok to replace the current file.
If you got Flowcode running when the file was placed in the components directory, you must select the reload icon before compiling again.
If it works for you the component will be added to the updates.
ATTACHMENTS
Grove_Barometer_Sensor_BMP280.fcpx
(7.59 KiB) Downloaded 16 times
Martin