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cosmicpi-detector.py
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cosmicpi-detector.py
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from influxdb import InfluxDBClient
import requests
import serial
import geohash
import uuid
import random
import time
import datetime
import paho.mqtt.client as paho
#define the versions for earlier units
#version 1.7 and 1.8 are identical, so use 1.8.1 for both
#version 1.6 has a different timing configuration, use 1.6.1
#version 1.5 has a different timing configuration again, use 1.5.1
#this goes in the mqtt channel only.
mqttchannel='cosmicpi/1.8.1'
#do not change these, even if you have an earlier version
#this is because you will need to update your dashboard to read from a different measurement
#not recommended!
hardwareversion='CosmicPiV1.8.1'
hardwareversion_freq='CosmicPiV1.8.1_freq'
broker="cosmicpidata.mooo.com"
port=1883
mqtt_ok=0
def on_publish(client,userdata,result):
print("Data published to MQTT server")
pass
def on_connect(client,userdata,flags,rc):
if rc==0:
print("connected ok")
else:
print("mqtt connection failed")
def on_disconnect(client,userdata,rc):
print("disconnecting reason " + str(rc))
mqttidentstring = str(uuid.getnode())
client1= paho.Client(mqttidentstring)
client1.on_publish = on_publish
client1.username_pw_set(username="cosmicpi",password="MuonsFROMSp8ce")
client1.on_connect=on_connect #binding call
url = "http://www.google.com"
timeout = 10
try:
request = requests.get(url,timeout=timeout)
print("internet ok")
mqtt_ok=1
except (requests.ConnectionError, requests.Timeout) as exception:
print("internet fail")
mqtt_ok=0
dbframe = 0
cosmicdict = {
"DeviceID": 0,
"UTCUnixTime": 0,
"SubSeconds": 0.0,
"TemperatureC": 0.0,
"Humidity": 0.0,
"AccelX": 0.0,
"AccelY": 0.0,
"AccelZ": 0.0,
"MagX": 0.0,
"MagY": 0.0,
"MagZ": 0.0,
"Pressure": 0.0,
"Altitude": 0.0,
"Longitude": 0.0,
"Latitude": 0.0
}
nstimestamp = 0
geohash_pos = 0
eventcount = 0
print("starting")
ser = serial.Serial(port='/dev/serial0', baudrate=115200, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, bytesize=serial.EIGHTBITS, timeout=1)
print("connected to: " + ser.portstr)
print ("The device ID using uuid1() is : ",end="")
print (uuid.getnode())
cosmicdict['DeviceID']=uuid.getnode()
print("DB connection")
client = InfluxDBClient(host='localhost', port=8086)
client.create_database('cosmicpilocal')
data=[]
print("MQTT connection")
if mqtt_ok==1:
client1.connect(broker,port)
client1.loop_start()
#return 0
#ser.write("help\n");
while True:
try:
line = ser.readline();
#if line:
#print(line.decode('utf-8'))
line_str = str(line.decode('utf-8'))
data_type = line_str.split(':')[0]
gps_type = line_str.split(',')[0]
#print(data_type)
#print(gps_type)
if data_type in cosmicdict.keys():
data = line_str.split(':')[1].split(';')[0]
cosmicdict[data_type] = float(data)
#if (data_type == "PPS"):
#print("found a pps")
#gps_lock_sting = line_str.split(':')[2]
#gps_lock_sting = gps_lock_sting.split(';')[0]
#if (len(gps_lock_sting) == 1):
#cosmicdict['UTCUnixTime'] += 1
gps_type = line_str.split(',')[0]
if gps_type == "$GPZDA" or gps_type == "$GNZDA":
if (line_str.count(',') == 6):
g_time_string = line_str.split(',')[1].split('.')[0] # has format hhmmss
hour = int(g_time_string[0:2])
minute = int(g_time_string[2:4])
second = int(g_time_string[4:6])
day = int(line_str.split(',')[2])
month = int(line_str.split(',')[3])
year = int(line_str.split(',')[4])
time_from_gps = datetime.datetime(year,month,day,hour,minute,second,tzinfo=None)
cosmicdict['UTCUnixTime'] = (time_from_gps - datetime.datetime(1970, 1, 1)).total_seconds()
cosmicdict['UTCUnixTime'] += 1
if gps_type == "$GPGGA":
# sanity check
if (line_str.count(',') == 14):
# use this as documentation for the string: http://aprs.gids.nl/nmea/#gga
lat = line_str.split(',')[2]
lat = float(lat[0:2])
minutes = line_str.split(',')[2]
minutes = float(minutes[2:len(minutes)])
lat += minutes / 60.
if line_str.split(',')[3] == 'S':
lat = -lat
lon = line_str.split(',')[4]
lon = float(lon[0:3])
minutes = line_str.split(',')[4]
minutes = float(minutes[3:len(minutes)])
lon += minutes / 60.
if line_str.split(',')[5] == 'W':
lon = -lon
cosmicdict['Latitude'] = lat
cosmicdict['Longitude'] = lon
if (eventcount >= 0) :
geohash_pos="\""+geohash.encode(lat,lon)+"\""
data = []
data.append("{measurement},id={DeviceID} geohash={geohash_pos},event_count={event_count} {timestamp}"
.format(measurement=hardwareversion_freq,
DeviceID=cosmicdict['DeviceID'],
geohash_pos=geohash_pos,
event_count=eventcount,
timestamp=int(cosmicdict['UTCUnixTime'])))
print(data)
client.write_points(data, database='cosmicpilocal', time_precision='s', batch_size=1, protocol='line')
eventcount=0
if mqtt_ok==1:
ret = client1.publish("cosmicpi/worldmap",str(data))
if gps_type == "$GPRMC":
# added this type to cope with broken GPS receivers, where the GPGGA and GNZDA strings aren't sent.
# (in fact GPRMC is the default output of 99% of all GPS chipsets, I don't know why we didn't use it from day 1)
# sanity check
if (line_str.count(',') == 12):
# use this as documentation for the string: http://aprs.gids.nl/nmea/#gprmc
g_time_string = line_str.split(',')[1].split('.')[0] # has format hhmmss
hour = int(g_time_string[0:2])
minute = int(g_time_string[2:4])
second = int(g_time_string[4:6])
#time parsed now
lat = line_str.split(',')[3]
lat = float(lat[0:2])
minutes = line_str.split(',')[2]
minutes = float(minutes[2:len(minutes)])
lat += minutes / 60.
if line_str.split(',')[4] == 'S':
lat = -lat
lon = line_str.split(',')[5]
lon = float(lon[0:3])
minutes = line_str.split(',')[5]
minutes = float(minutes[3:len(minutes)])
lon += minutes / 60.
if line_str.split(',')[6] == 'W':
lon = -lon
daycode = (line_str.split(',')[9])
day = int(daycode[0:2])
month = int(daycode[2:4])
year = 2000+int(daycode[4:6])
# Yes, I just introduced a millenium bug for a year 2099 roll over issue...
time_from_gps = datetime.datetime(year,month,day,hour,minute,second,tzinfo=None)
cosmicdict['UTCUnixTime'] = (time_from_gps - datetime.datetime(1970, 1, 1)).total_seconds()
cosmicdict['UTCUnixTime'] += 1
cosmicdict['Latitude'] = lat
cosmicdict['Longitude'] = lon
if (eventcount >= 0) :
geohash_pos="\""+geohash.encode(lat,lon)+"\""
data = []
data.append("{measurement},id={DeviceID} geohash={geohash_pos},event_count={event_count} {timestamp}"
.format(measurement=hardwareversion_freq,
DeviceID=cosmicdict['DeviceID'],
geohash_pos=geohash_pos,
event_count=eventcount,
timestamp=int(cosmicdict['UTCUnixTime'])))
print(data)
client.write_points(data, database='cosmicpilocal', time_precision='s', batch_size=1, protocol='line')
eventcount=0
if mqtt_ok==1:
ret = client1.publish("cosmicpi/worldmap",str(data))
if data_type == "Event":
if ((line_str.count(':') == 3) and (line_str.count(';') == 1)):
sub_sec_string = line_str.split(':')[2]
sub_sec_string = sub_sec_string.split(';')[0]
if sub_sec_string.count('/') == 1:
# this is the newer format and we need to divide the first number by the second one
divisors = sub_sec_string.split('/')
current_subSeconds = float(divisors[0]) / float(divisors[1])
cosmicdict['SubSeconds'] = current_subSeconds
#print(cosmicdict)
#conversion to ns for influx
#add s and ns, then multiply by 1e9
nstimestamp = cosmicdict['UTCUnixTime']+cosmicdict['SubSeconds']
nstimestamp = nstimestamp*1e9
nstimestamp = int(nstimestamp)
eventcount = eventcount + 1
data = []
data.append("{measurement},id={DeviceID} lat={latitude},lon={longitude},Temp={Temp},Hum={Hum},Accelx={Accelx},Accely={Accely},Accelz={Accelz},Magx={Magx},Magy={Magy},Magz={Magz},Press={Pressx},Alt={Altx} {timestamp}"
.format(measurement=hardwareversion,
DeviceID=cosmicdict['DeviceID'],
latitude=cosmicdict['Latitude'],
longitude=cosmicdict['Longitude'],
Temp=cosmicdict['TemperatureC'],
Hum=cosmicdict['Humidity'],
Accelx=cosmicdict['AccelX'],
Accely=cosmicdict['AccelY'],
Accelz=cosmicdict['AccelZ'],
Magx=cosmicdict['MagX'],
Magy=cosmicdict['MagY'],
Magz=cosmicdict['MagZ'],
Pressx=cosmicdict['Pressure'],
Altx=cosmicdict['Altitude'],
timestamp=nstimestamp))
print(data)
client.write_points(data, database='cosmicpilocal', time_precision='n', batch_size=1, protocol='line')
if mqtt_ok==1:
ret = client1.publish(mqttchannel,str(data))
except:
pass