On Sunday, February 12, 2017 at 4:10:22 PM UTC-5, Mic G77 wrote:
>
> I have a wmr200.
> I have seen that the following information are available :
> outTempBatteryStatus, windBatteryStatus, uvBatteryStatus, and
> rainBatteryStatus
>
> What i would like to have is this information for de 2 extra THGR sensor i
> have (temperature and humidity)
> For exemple : I have acces to extratemp2, extrahumid 2 but not to
> extra2BatteryStatus..
>>
>>
>>
according to the wmr200 driver, battery status is available only in the
console status packets. the console status packet contains
outTempBatteryStatus, windBatteryStatus, uvBatteryStatus, and
rainBatteryStatus.
however, according to the wmr100 driver, the T/H and T packets contain the
battery status for remote sensors, at least for the sensors on channel 0
and channel 1. (i'm guessing that there is battery status on other
channels too, but the wmr100 driver does not capture those)
so it is possible that the remote battery status could be decoded in the
wmr200 driver. the question is where and how?
the wmr100 driver expects a 6-byte payload for T/H packets, and looks for
the battery status in the hi nibble of byte 0:
(payload[0] & 0x40) >> 6
the wmr200 expects a 7-byte payload for T/H packets:
payload[0] & 0x0f - channel
(payload[0] >> 6) & 0x3 - temperature trend
(payload[0] >> 4) & 0x3 - humidity trend
(((payload[2] & 0xf) << 8) | payload[1]) / 10.0 - temperature (sign is
payload[2] & 0x80)
payload[3] - humidity
(((payload[5] & 0xf) << 8) | payload[4]) / 10.0 - dewpoint (sign is
payload[5] & 0x80)
(payload[6] - 32) / (9.0 / 5.0) - heatindex
which leaves some room for a battery status bit - probably in byte 0
so if you can identify which byte/nibble is the battery status, we can map
that to the weewx data structures.
please run weewx with extra debug enabled. in weewx.conf:
debug=1
[WMR200]
...
debug_raw = 1
debug_packets_temp = 1
this will show the bytes in each packet in the log. then put weak
batteries into one of your t/h sensors. from that we can figure out which
bytes contain the battery status.
m
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