Am 13.03.20 um 17:05 schrieb zeitvertreib.wiss...@web.de:
> Hello Jan,
> I'm sorry, you are right.
> I do not use bash commands, I do read and write operations from a Python3
> program. I do it step by step, as I'm not used to Python.
> I had a version with uncached, but there was another program error and I
> forgot
> adjusting the file path.
> PATH = "/mnt/1wire/bus.0/"
> *initiation of conversion:*
>
> while True: # Hauptprogramm
> t1 = time()
> fw = open(PATH + "simultaneous" + "/temperature", "w")
> fw.write("1")
> fw.close()
> *reading values:*
> for i in tempList:
> deviceFile = PATH + "uncached/" + temps[i] + "/latesttemp"
> f = open(deviceFile, "r")
> tempBuffer = float(f.read())
> f.close()
> if tempBuffer != 85.0:
> tempw[i] = tempBuffer
> print(temps[i], tempw[i])
> break
> t2 = time()
> print(t2 - t1)
> However, now I wonder about very short conversion times, shorter than 700 ms a
> single 12bit conversion shoul take.
>
Writing to /simultaneous/temperature does not wait for the end of
conversion. You have to do this by hand in case you have nothing better
to do in your program.
Also, I recommend not to use the FUSE binding of OWFS, as it has
unfixable race conditions. Use OWFS' owserver and pyownet instead.
> Actually there is a problem when installing OWFS on Raspian Buster on PIs.
> File
> system an sensors appear in duplicates. I give you a link to the forum of the
> manufacturer of the used DS2482-100 adapter:
> https://www.abelectronics.co.uk/forums/thread/303/owfs-duplicates
>
Honestly, no idea. May be a FUSE bug.
It's best to forget about the FUSE binding at all.
Kind regards
Jan
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