Minimal PC weather station to influxdb bridge

Hardware

• Bresser 5-in-1 PC (7002571)
• CCLEL C8488 clones
• VID=1941 PID=8021

Very likely also:

• Youshiko YC9388
• Bresser PC 6 in 1
• Garni 935PC
• Ventus W835

Original protocol deciphering work from weewx-ws6in1 with additions and simplifications.

Mechanism

• Uses hidraw kernel driver to access the weather station (load that module and ensure it binds the device, also ensure RW access to the respective hidraw character device node)
• Does not need libusb or hidapi
• Configures time and date so that rain quantity reset time is correct
• Optionally exports reports receveived to influxdb line protocol and sends via UDP

Compile

E.g. for openwrt on mips architectures:

• Install cross
• Run cross +nightly build --release --target mips-unknown-linux-musl -Z build-std=std,panic_abort -Z build-std-features=panic_immediate_abort
• Get a small-ish (~ 100 kB) binary