Re: [weewx-user] Re: cmon - Extension / cpu_temp missing on raspberry
Thanks to the hints in this case. I run weewx on a Raspberry Pi 4 too and
could not see a CPU temperature.
I modified the file *cmon.py* like this:
# read cpu temperature
tdir = '/sys/class/hwmon/hwmon0/device'
# rpi keeps cpu temperature in a different location
tfile = '/sys/class/thermal/thermal_zone0/temp'
if os.path.exists(tfile):#
moved above 'elif os.path.exists(tdir):'
try:
s = self._readproc_line(tfile)
t_C = int(s) / 1000 # degree C
record['cpu_temp'] = t_C
except Exception as e:
logdbg("read failed for %s: %s" % (tfile, e))
elif os.path.exists(tdir): #
moved behind 'if os.path.exists(tfile):'
try:
for f in os.listdir(tdir):
if f.endswith('_input'):
s = self._readproc_line(os.path.join(tdir, f))
if s and len(s):
n = f.replace('_input', '')
t_C = int(s) / 1000 # degree C
record['cpu_' + n] = t_C
except Exception as e:
logdbg("read failed for %s: %s" % (tdir, e))
The ' if os.path.exists(tfile): ' must be checked first. The complete block
beginning with ' if os.path.exists(tfile): ' must be moved and if and elif
must be changed. Now i can see the CPU temperature.
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Re: [weewx-user] Re: cmon - Extension / cpu_temp missing on raspberry
Thank you for the hints! I was able to find the cmon.py file under /usr/share/weewx/user/ I've changed the if-condition so that tfile is now used. Now the display of the cpu_temp works perfectly. Many Thanks In the file cmon.py, there is a check on a directory (tdir) and a check on a specific file (tfile). Apparently on some unices, the directory tdir contains a file with the cpu temp. On raspberries, the directory exists, but doesn’t contain the temperature file. The cpu temp is actually in the file tfile. So basically, you have to swap the order of the check: check first for tfile then tdir. I’d post the necessary mod, but I don’t have access to my rpi right now. Hope this helps and sorry for not being able to give more details! -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/69db508d-6d91-0842-fd1e-258c1db83156%40googlemail.com.
[weewx-user] Re: cmon - Extension / cpu_temp missing on raspberry
In the file cmon.py, there is a check on a directory (tdir) and a check on a specific file (tfile). Apparently on some unices, the directory tdir contains a file with the cpu temp. On raspberries, the directory exists, but doesn’t contain the temperature file. The cpu temp is actually in the file tfile. So basically, you have to swap the order of the check: check first for tfile then tdir. I’d post the necessary mod, but I don’t have access to my rpi right now. Hope this helps and sorry for not being able to give more details! On Wednesday, March 10, 2021 at 9:12:00 AM UTC-8 plin...@googlemail.com wrote: > Hello, > > i have installed the cmon extension as described in > https://github.com/weewx/weewx/wiki/cmon > > In the plots the cpu_temp - Graph has no values. > > I use an raspberry pi 4 > > does someone have a tip about it? > > Many thanks and greetings > > plinepa > > > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/df7404aa-e50c-4451-af49-a9b9b1de5b53n%40googlegroups.com.
