Simple Python library to decode data from the HAN port on Norwegian electricity meters.

This library is based on the C library found here: https://drive.google.com/drive/folders/0B3ZvFI0Dg1TDbDBzMU02cnU0Y28

The library tries to make is realy easy to decode data on the HAN port.

Simple serial HAN decoder:

from HAN import readHan
import serial

with serial.Serial('/dev/ttyUSB0', 2400, timeout=5) as ser:
    while True:
        han = readHan(ser)
        print("{} Watt".format(han.data["act_pow_pos"]))

Decode messages from file:

from HAN import readHan
with open(file, "rb") as ser
    while True:
        try:
            han = readHan(ser)
            print("{} Watt".format(han.data["act_pow_pos"]))
        except EOFError as e:
            # End Of File
            break
        except Exception as e:
            # Unable to decode message
            continue

For a more complete example se serialHan.py and influxUploader.py

Sample script to upload Usage data to influxDB

usage: python3 pyinfluxUploader.py --influxserver server.ip.address --username user --password pass --database database

For now extensive testing is not completed, and the library is only tested on the Kaifa MA304H4 meter. Also only messagetype 1 and 2 is tested for now