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Copy pathgpsd.py
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executable file
·211 lines (180 loc) · 5.49 KB
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#!/usr/bin/python
# FIlename: gpsd.py
'''
Created on 17 Dec 2013
@author: rmamba@gmail.com
'''
from daemon import Daemon
from decimal import Decimal
import sys
import time
import math
import json
import requests
#RaspberryPi: sudo apt-get install python-serial
#OpenSuse: zypper install python-serial
import serial
class MyDaemon(Daemon):
def _writeLog(self, msg, isDate=True):
sys.stdout.write("%s: %s\n" % (time.strftime("%Y-%m-%d %H:%M:%S"), msg))
sys.stdout.flush()
def _writeErr(self, msg, isDate=True):
sys.stderr.write("%s: %s\n" % (time.strftime("%Y-%m-%d %H:%M:%S"), msg))
sys.stderr.flush()
def _isNoneOrEmptry(self, val):
if (val==None) or (val==""):
return True
return False
def _toDoubleLatLong(self, latlon, side):
val = None
if (self._isNoneOrEmptry(latlon) or self._isNoneOrEmptry(side)):
return None
try:
tmp = float(latlon)
tmp /= 100
val = math.floor(tmp)
tmp = (tmp - val) * 100
val += tmp/60
tmp -= math.floor(tmp)
tmp *= 60
if ((side.upper() == "S") or (side.upper()=="W")):
val *= -1
except ValueError:
self._writeErr("Can't calculate from {0} side {1}".format(latlon, side))
val = None
return val
def _toFloat(self, value):
val = None
if self._isNoneOrEmptry(value):
return None
try:
val = float(value)
except ValueError:
self._writeErr("Can't convert to float: {0}".format(value))
val = None
return val
def _toInt(self, value):
val = None
if self._isNoneOrEmptry(value):
return None
try:
val = int(value)
except ValueError:
self._writeErr("Can't convert to int: {0}".format(value))
val = None
return val
def run(self):
while True:
isChanged = False
if self.__ser.inWaiting()>40:
line = self.__ser.readline()
if (self.__hislog != None):
self.__hislog.write(line)
if (line.startswith('$GPGGA')):
GGA = line.split(',')
self.GPS['DateTime']['time'] = self._toFloat(GGA[1])
self.GPS['Lat'] = self._toDoubleLatLong(GGA[2], GGA[3])
self.GPS['Lon'] = self._toDoubleLatLong(GGA[4], GGA[5])
self.GPS['Url']['GoogleMaps'] = 'https://maps.google.com?q={Lat},{Lon}&z=17'.format(**self.GPS)
self.GPS['Satellites'] = self._toInt(GGA[7])
self.GPS['Dilution'] = self._toFloat(GGA[8])
self.GPS['Alt'] = self._toFloat(GGA[9])
isChanged = True
if (line.startswith('$GPRMC')):
RMC = line.split(',')
self.GPS['DateTime']['utc'] = self._toFloat(RMC[1])
self.GPS['Warning'] = RMC[2]
_knots = self._toFloat(RMC[7])
self.GPS['Speed']['knots'] = self.GPS['Speed']['kmh'] = self.GPS['Speed']['mph'] = self.GPS['Speed']['mps'] = None
if _knots != None:
self.GPS['Speed']['knots'] = _knots
self.GPS['Speed']['kmh'] = _knots * 1.85200000
self.GPS['Speed']['mph'] = _knots * 1.15077945
self.GPS['Speed']['mps'] = _knots * 0.51444444
self.GPS['Direction'] = self._toFloat(RMC[8])
self.GPS['DateTime']['date'] = self._toInt(RMC[9])
isChanged = True
#if isChanged:
r = requests.post(self.restDbUrl+'/post/GPS', data=json.dumps(self.GPS), headers={'Content-Type': 'application/json'})
if r.status_code != 200:
self._writeErr(r.text)
time.sleep(.2)
def begin(self):
self._writeLog("Starting(%s)..." % self.pidfile)
try:
self.__hislog = None
if (self.history != None):
self.__hislog = open(self.history, 'w')
except:
self._writeErr("Exception creating history file %s" % self.history)
self.stop()
try:
self._writeLog("Opening port %s" % self.device)
self.__ser = serial.Serial(port=self.device, baudrate=self.baud, timeout=self.timeout)
if (self.__ser != None):
self._writeLog("Opened...")
except:
self._writeErr("Exception opening port %s" % self.device)
self.stop()
def end(self):
if (self.__ser != None):
self.__ser.close()
if (self.__hislog != None):
self.__hislog.close()
del self.__ser
del self.__hislog
self._writeLog("Exiting...")
if __name__ == "__main__":
if len(sys.argv) != 2:
print("usage: %s start|stop|restart|gmaps|json|pjson|location" % sys.argv[0])
sys.exit(2)
f = open('gpsd.config', 'r')
s = f.read()
__config = json.loads(s)
f.close()
__device = '/dev/ttyUSB0'
if 'device' in __config:
__device = __config['device']
__baud = 4800
if 'baud' in __config:
__baud = __config['baud']
__log = '/var/log/gpsd.log'
if 'log' in __config:
__log = __config['log']
__errlog = '/var/log/gpsd.error.log'
if 'errlog' in __config:
__errlog = __config['errlog']
__history = None
if 'history' in __config:
__history = __config['history']
__dbUrl = '127.0.0.1:666'
if 'RestDB' in __config:
__dbUrl = 'http://' + __config['RestDB']
__dbUrlPass = None
daemon = MyDaemon('/var/run/gpsd.pid', '/dev/null', __log, __errlog, __device, __baud, __history, __dbUrl, __dbUrlPass)
if 'start' == sys.argv[1]:
daemon.start()
elif 'stop' == sys.argv[1]:
daemon.stop()
elif 'restart' == sys.argv[1]:
daemon.restart()
elif 'gmaps' == sys.argv[1]:
r = requests.get(__dbUrl+'/GPS')
_json = json.loads(r.text)
url = 'https://maps.google.com?q={Lat},{Lon}'.format(**_json)
print url
elif 'location' == sys.argv[1]:
r = requests.get(__dbUrl+'/GPS')
_json = json.loads(r.text)
loc = "Lat: {Lat}\r\nLon: {Lon}\r\nAlt: {Alt}".format(**_json)
print loc
elif 'json' == sys.argv[1]:
r = requests.get(__dbUrl+'/GPS')
print r.text
elif 'pjson' == sys.argv[1]:
r = requests.get(__dbUrl+'/GPS?pjson')
print r.text
else:
print("Unknown command")
sys.exit(2)
sys.exit(0)