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https://gitee.com/qpy-solutions/tracker-v2.git
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244 lines
7.6 KiB
Python
244 lines
7.6 KiB
Python
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import ure
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import _thread
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import cellLocator
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import usr.settings as settings
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from queue import Queue
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from machine import UART
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from usr.logging import getLogger
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from usr.common import Singleton
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from wifilocator import wifilocator
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try:
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import quecgnss
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except ImportError:
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quecgnss = None
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log = getLogger(__name__)
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gps_data_retrieve_queue = None
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class LocationError(Exception):
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def __init__(self, value):
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self.value = value
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def __str__(self):
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return repr(self.value)
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def gps_data_retrieve_cb(para_list):
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'''
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GPS data retrieve callback from UART
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When data comes, send a message to queue of data length
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'''
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global gps_data_retrieve_queue
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toRead = para_list[2]
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if toRead:
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gps_data_retrieve_queue.put(toRead)
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def gps_data_retrieve_thread(argv):
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'''
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GPS data retrieve thread
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Receive a message from queue of data length.
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Then read the corresponding length of data from UART into self.gps_data.
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So self.gps_data will be updated immediately once the data comes to UART that
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the self.gps_data could keep the latest data.
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'''
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global gps_data_retrieve_queue
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self = argv
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while True:
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toRead = gps_data_retrieve_queue.get()
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if toRead:
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self.gps_data = self.uart_read(toRead).decode()
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class GPS(Singleton):
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def __init__(self, gps_cfg):
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self.gps_data = ''
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self.gps_cfg = gps_cfg
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current_settings = settings.settings.get()
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if current_settings['sys']['gps_mode'] & settings.default_values_sys._gps_mode.external:
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self.uart_init()
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elif current_settings['sys']['gps_mode'] & settings.default_values_sys._gps_mode.internal:
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if quecgnss:
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quecgnss.init()
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else:
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raise LocationError('quecgnss import error.')
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self.quecgnss_read()
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def uart_init(self):
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global gps_data_retrieve_queue
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self.uart_obj = UART(
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self.gps_cfg['UARTn'], self.gps_cfg['buadrate'], self.gps_cfg['databits'],
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self.gps_cfg['parity'], self.gps_cfg['stopbits'], self.gps_cfg['flowctl']
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)
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self.uart_obj.set_callback(gps_data_retrieve_cb)
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gps_data_retrieve_queue = Queue(maxsize=8)
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_thread.start_new_thread(gps_data_retrieve_thread, (self,))
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def uart_read(self, nread):
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return self.uart_obj.read(nread).decode()
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def quecgnss_read(self):
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if quecgnss.get_state() == 0:
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quecgnss.gnssEnable(1)
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data = quecgnss.read(4096)
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self.gps_data = data[1].decode()
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return self.gps_data
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def read(self):
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return self.gps_data
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def read_location_GxRMC(self):
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gps_data = self.read()
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rmc_re = ure.search(
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r"\$G[NP]RMC,[0-9]+\.[0-9]+,A,[0-9]+\.[0-9]+,[NS],[0-9]+\.[0-9]+,[EW],[0-9]+\.[0-9]+,[0-9]+\.[0-9]+,[0-9]+,,,[ADE],[SCUV]\*[0-9]+",
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gps_data)
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if rmc_re:
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return rmc_re.group(0)
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else:
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return ""
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def read_location_GxGGA(self):
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gps_data = self.read()
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gga_re = ure.search(
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r"\$G[BLPN]GGA,[0-9]+\.[0-9]+,[0-9]+\.[0-9]+,[NS],[0-9]+\.[0-9]+,[EW],[126],[0-9]+,[0-9]+\.[0-9]+,-*[0-9]+\.[0-9]+,M,-*[0-9]+\.[0-9]+,M,,\*[0-9]+",
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gps_data)
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if gga_re:
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return gga_re.group(0)
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else:
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return ""
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def read_location_GxVTG(self):
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gps_data = self.read()
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vtg_re = ure.search(r"\$G[NP]VTG,[0-9]+\.[0-9]+,T,([0-9]+\.[0-9]+)??,M,[0-9]+\.[0-9]+,N,[0-9]+\.[0-9]+,K,[ADEN]\*\w*", gps_data)
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if vtg_re:
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return vtg_re.group(0)
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else:
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return ""
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def read_location_GxVTG_speed(self):
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vtg_data = self.read_location_GxVTG()
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if vtg_data:
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speed_re = ure.search(r",N,[0-9]+\.[0-9]+,K,", vtg_data)
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if speed_re:
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return speed_re.group(0)[3:-3]
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return ""
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class CellLocator(object):
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def __init__(self, cellLocator_cfg):
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self.cellLocator_cfg = cellLocator_cfg
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def read(self):
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return cellLocator.getLocation(
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self.cellLocator_cfg['serverAddr'],
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self.cellLocator_cfg['port'],
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self.cellLocator_cfg['token'],
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self.cellLocator_cfg['timeout'],
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self.cellLocator_cfg['profileIdx']
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)
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def read_quecIot(self):
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return ['LBS']
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class WiFiLocator(object):
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def __init__(self, wifiLocator_cfg):
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self.wifilocator_obj = wifilocator(wifiLocator_cfg['token'])
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def read(self):
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return self.wifilocator_obj.getwifilocator()
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def read_quecIot(self):
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return []
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class Location(Singleton):
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gps = None
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cellLoc = None
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wifiLoc = None
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def __init__(self):
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self._locater_init()
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def _locater_init(self):
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current_settings = settings.settings.get()
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locator_init_params = current_settings['sys']['locator_init_params']
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if current_settings['app']['loc_method'] & settings.default_values_app._loc_method.gps:
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if self.gps is None:
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if 'gps_cfg' in locator_init_params:
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self.gps = GPS(locator_init_params['gps_cfg'])
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else:
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raise ValueError('Invalid gps init parameters.')
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else:
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self.gps = None
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if current_settings['app']['loc_method'] & settings.default_values_app._loc_method.cell:
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if self.cellLoc is None:
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if 'cellLocator_cfg' in locator_init_params:
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self.cellLoc = CellLocator(locator_init_params['cellLocator_cfg'])
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else:
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raise ValueError('Invalid cell-locator init parameters.')
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else:
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self.cellLoc = None
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if current_settings['app']['loc_method'] & settings.default_values_app._loc_method.wifi:
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if self.wifiLoc is None:
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if 'wifiLocator_cfg' in locator_init_params:
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self.wifiLoc = WiFiLocator(locator_init_params['wifiLocator_cfg'])
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else:
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raise ValueError('Invalid wifi-locator init parameters.')
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else:
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self.wifiLoc = None
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def read(self):
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self._locater_init()
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current_settings = settings.settings.get()
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if self.gps:
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data = []
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if current_settings['sys']['cloud'] == settings.default_values_sys._cloud.quecIot:
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r = self.gps.read_location_GxRMC()
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if r:
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data.append(r)
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r = self.gps.read_location_GxGGA()
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if r:
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data.append(r)
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r = self.gps.read_location_GxVTG()
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if r:
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data.append(r)
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if len(data):
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return (settings.default_values_app._loc_method.gps, data)
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if self.cellLoc:
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if current_settings['sys']['cloud'] == settings.default_values_sys._cloud.quecIot:
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data = self.cellLoc.read_quecIot()
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else:
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data = self.cellLoc.read()
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if data:
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return (settings.default_values_app._loc_method.cell, data)
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if self.wifiLoc:
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if current_settings['sys']['cloud'] == settings.default_values_sys._cloud.quecIot:
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data = self.wifiLoc.read_quecIot()
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else:
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data = self.wifiLoc.read()
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if data:
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return (settings.default_values_app._loc_method.wifi, data)
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return ()
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