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74 lines
2.4 KiB
74 lines
2.4 KiB
8 years ago
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#!/usr/bin/env python
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import zmq
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from copy import copy
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from selfdrive import messaging
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from selfdrive.services import service_list
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from cereal import log
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from common.transformations.coordinates import geodetic2ecef
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def main(gctx=None):
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context = zmq.Context()
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poller = zmq.Poller()
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gps_sock = messaging.sub_sock(context, service_list['gpsLocation'].port, poller)
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gps_ext_sock = messaging.sub_sock(context, service_list['gpsLocationExternal'].port, poller)
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app_sock = messaging.sub_sock(context, service_list['applanixLocation'].port, poller)
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loc_sock = messaging.pub_sock(context, service_list['liveLocation'].port)
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last_ext, last_gps, last_app = -1, -1, -1
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# 5 sec
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max_gap = 5*1e9
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preferred_type = None
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while 1:
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for sock, event in poller.poll(500):
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if sock is app_sock:
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msg = messaging.recv_one(sock)
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last_app = msg.logMonoTime
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this_type = 'app'
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if sock is gps_sock:
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msg = messaging.recv_one(sock)
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gps_pkt = msg.gpsLocation
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last_gps = msg.logMonoTime
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this_type = 'gps'
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if sock is gps_ext_sock:
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msg = messaging.recv_one(sock)
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gps_pkt = msg.gpsLocationExternal
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last_ext = msg.logMonoTime
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this_type = 'ext'
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last = max(last_gps, last_ext, last_app)
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if last_app > last - max_gap:
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new_preferred_type = 'app'
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elif last_ext > last - max_gap:
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new_preferred_type = 'ext'
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else:
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new_preferred_type = 'gps'
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if preferred_type != new_preferred_type:
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print "switching from %s to %s" % (preferred_type, new_preferred_type)
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preferred_type = new_preferred_type
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if this_type == preferred_type:
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new_msg = messaging.new_message()
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if this_type == 'app':
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# straight proxy the applanix
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new_msg.init('liveLocation')
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new_msg.liveLocation = copy(msg.applanixLocation)
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else:
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new_msg.logMonoTime = msg.logMonoTime
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new_msg.init('liveLocation')
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pkt = new_msg.liveLocation
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pkt.lat = gps_pkt.latitude
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pkt.lon = gps_pkt.longitude
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pkt.alt = gps_pkt.altitude
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pkt.speed = gps_pkt.speed
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pkt.heading = gps_pkt.bearing
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pkt.positionECEF = [float(x) for x in geodetic2ecef([pkt.lat, pkt.lon, pkt.alt])]
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pkt.source = log.LiveLocationData.SensorSource.dummy
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loc_sock.send(new_msg.to_bytes())
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if __name__ == '__main__':
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main()
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