Works perfectly.

On Fri, 8 May 2020 at 09:41, Mike Revitt <m...@cougar.eu.com> wrote:

> I have this working on my Rasberry pi at
> https://weather.cougar.eu.com/telemetry.html and this is how I did it
>
> in weewx.conf
>
> In
> [Engine]
>  [[Services]]
>
> set
>
> data_services = user.cputemp.AddCpuTemp
>
> Then add this Python program to the bin user directory where your Rasberry
> Pi code is.
>
> #    Copyright (c) 2009-2020 Mike Revitt
>
> #    See the file LICENSE.txt for your rights.
>
> """Gets the CPU temperature on a Rasberry Pi"""
>
>
>
> *import*  weewx
>
> *from*    weewx.engine    *import*  StdService
>
> *from*    gpiozero        *import*  CPUTemperature
>
>
>
> *class* AddCpuTemp(StdService):
>
>
>
>     *def* __init__(self, engine, config_dict):
>
>
>
>       # Initialize my superclass first:
>
>       super(AddCpuTemp, self).__init__(engine, config_dict)
>
>
>
>       # Bind to any new archive record events:
>
>       self.bind(weewx.NEW_ARCHIVE_RECORD, self.new_archive_record)
>
>
>
>     *def* new_archive_record(self, event):
>
>
>
>         cpu = CPUTemperature()
>
>
>
>         *if* event.record['usUnits'] == weewx.US:
>
>             event.record['extraTemp1'] = ( cpu.temperature * 1.8 ) + 32
>
>         *else*:
>
>             event.record['extraTemp1'] = cpu.temperature
>
>
>
>
>
>
>
>
> On Thursday, May 7, 2020 at 3:48:53 PM UTC+1, Luc Heijst wrote:
>>
>> Recently I downloaded the latest version of weewx-cmon (v 0.20) which was
>> converted to use with python3.
>> This version, and also elder versions of cmon.py, did not read the
>> cpu-temp of my Raspberri PI systems (models 1B, 2B, 3B and 3B+).
>>
>> On my raspberry PI the following statement is true:
>> *os.path.exists(tdir)*, still a cpu-temp could not be found in this
>> section
>> The *elif os.path.exists(tfile):* statement caused the bottem section to
>> be skipped and that is the section that reads the RPI cpu-temp.
>>
>> See the modifications in yellow which fixed this problem.
>>
>> Luc
>>
>> --- snipped of cmon.py ---
>>         # read cpu temperature
>>         tdir = '/sys/class/hwmon/hwmon0/device'
>>         # rpi keeps cpu temperature in a different location
>>         tfile = '/sys/class/thermal/thermal_zone0/temp'
>>         *temp_found = False*
>>         if os.path.exists(tdir):
>>             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):
>>                             *temp_found = True*
>>                             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))
>>         ### elif os.path.exists(tfile):  ### original statement
>>         if* not temp_found and *os.path.exists(tfile):
>>             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))
>>
>> -----------
>>
>>
> You can then access the Rasberry Pi CPU temperature as the variable
> extraTemp1 from within your HTML files
>
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