chamomile_solar

#!/usr/bin/env python3
# For the record, capnchamomile made this work well enough to
# finish the required hacking. Thanks Dan!
# You're welcome!

from pymodbus.client import ModbusSerialClient as ModbusClient #latest pymodbus change
import paho.mqtt.client as mqtt
from time import sleep, gmtime, strftime
import datetime

mqtt_client = mqtt.Client()
mqtt_client.connect("192.168.10.202")
mqtt_client.loop_start()

client = ModbusClient(method='rtu', port='/dev/ttyUSB0', baudrate=115200, stopbits=1, bytesize=8, timeout=2)
client.connect()

while True:
    result = client.read_input_registers(0x3100,20, unit=1)
    if not hasattr(result, 'registers'):
        continue
    solarWatt = float(result.registers[2] / 100.0)
    solarVoltage = float(result.registers[0] / 100.0)
    solarCurrent = float(result.registers[1] / 100.0)
    batteryVoltage = float(result.registers[4] / 100.0)
    chargeCurrent = float(result.registers[5] / 100.0)
    loadWatts = float(result.registers[19] / 100.0)

#    mqtt_client.publish("solar", "|-------------------------------|")
    mqtt_client.publish("solar/solarVoltage", str(solarVoltage))
    mqtt_client.publish("solar/solarCurrent", str(solarCurrent))
    mqtt_client.publish("solar/solarWattage", str(solarWatt))
    mqtt_client.publish("solar/batteryVoltage", str(batteryVoltage))
    mqtt_client.publish("solar/chargeCurrent", str(chargeCurrent))
    mqtt_client.publish("solar/loadWatts", str(loadWatts))
#    mqtt_client.publish("solar", strftime("%m-%d-%Y  %H:%M:%S", gmtime()))
    sleep(60)

mqtt_client.disconnect()
client.close()