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#!/usr/bin/env python
import ubus
import sys
import os
import time
from periphery import I2C
import sqlite3
import commands
# 60mV per step
power_supply_cut_off = 212
power_supply_reaquare = 215
battery_low = 202
battery_not_low = 206
battery_high = 260
battery_not_high = 250
# TODO use __main__
# Initialize I2C
i2c = I2C("/dev/i2c-7")
# Initialize sqlite
db_connection = sqlite3.connect('/tmp/i2c-collect.db')
db = db_connection.cursor()
# Initialize ubus
ubus.connect()
def read_chunk(handler, data):
result = []
for row in db.execute('SELECT date, %s FROM collected_data WHERE date > %s' % \
(data['field'], (int(time.time()) - data['range']))):
result.append((row[0], row[1]))
handler.reply({"data": result})
ubus.add(
"i2c-collect", {
"read_data": {
"method": read_chunk,
"signature": {"range": ubus.BLOBMSG_TYPE_INT32, "field": ubus.BLOBMSG_TYPE_STRING},
},
}
)
db.execute('''CREATE TABLE IF NOT EXISTS collected_data (
date INTEGER NOT NULL,
temperature INTEGER NOT NULL,
light INTEGER NOT NULL,
voltage INTEGER NOT NULL,
trimmer INTEGER NOT NULL
)''')
def i2c_get(addr):
msg = [I2C.Message([addr]), I2C.Message([0x00], read=True)]
i2c.transfer(0x48, msg)
return msg[1].data[0]
def load_data():
return {
'trimmer': i2c_get(0x40),
'temperature': i2c_get(0x41),
'light': i2c_get(0x42),
'voltage': i2c_get(0x43)
}
def db_data(data):
db.execute('''INSERT INTO collected_data (date, temperature, light, voltage, trimmer) VALUES
(%s, %s, %s, %s, %s)''' % (str(int(time.time())), data['temperature'], data['light'], data['voltage'], data['trimmer']))
db_connection.commit()
def ubus_data(data):
date = str(int(time.time()))
for k in iter(data.keys()):
ubus.send("i2c-collect", {k: (date, data[k])})
notified_power_supply = False
notified_low_battery = False
notified_high_battery = False
def check_data(data):
global notified_low_battery, notified_power_supply, notified_high_battery
for k in data:
if k == "voltage":
if data['voltage'] > power_supply_reaquare and notified_power_supply:
commands.getoutput('create_notification -s news "Sitove napajeni bylo obnoveno." "Power supply was reaquired."')
notified_power_supply = False
elif data['voltage'] <= power_supply_cut_off and not notified_power_supply: # 12.8V
commands.getoutput('create_notification -s error "Vypadlo sitove napajeni!" "Power supply was interrupted!"')
notified_power_supply = True
if data['voltage'] > battery_not_low and notified_low_battery:
notified_low_battery = False
elif data['voltage'] <= battery_low and not notified_low_battery: # 12V
volts = float(data['voltage']) * 0.0593
commands.getoutput('create_notification -s error "Nizke napetu akumulatoru! %.2f V" "Low voltage of the acumulator! %.2f V"' % (volts, volts))
notified_low_battery = True
if data['voltage'] <= battery_not_high and notified_high_battery:
notified_high_battery = False
elif data['voltage'] > battery_high and not notified_high_battery:
commands.getoutput('create_notification -s error "Vysoke napetu akumulatoru!" "High voltage of the acumulator!"')
notified_high_battery = True
# TODO add to exit handler
# i2c.close()
while True:
ubus.loop(60000)
data = load_data()
#print(data)
db_data(data)
ubus_data(data)
check_data(data)
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