From b523b0c8cc37a989bfb84a5ebefe1ec1f2b0cbfb Mon Sep 17 00:00:00 2001 From: Scott Murray Date: Mon, 22 Apr 2019 21:38:18 -0400 Subject: Initial code check-in A simple telematics demo application for AGL. It reads vehicle and engine speed from the CAN low-level binding and publishes them via MQTT. Change-Id: Ib85904e87919053cad1215b3f53cee81db25c94a Signed-off-by: Scott Murray --- app/gps.cpp | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 app/gps.cpp (limited to 'app/gps.cpp') diff --git a/app/gps.cpp b/app/gps.cpp new file mode 100644 index 0000000..79e97b4 --- /dev/null +++ b/app/gps.cpp @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2019 Konsulko Group + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "gps.h" +#include +#include +#include + +bool get_location(Configuration &config, AfbClient &afbclient, location_data *location) +{ + bool rc; + struct json_object *j_resp = NULL; + std::string status; + + if(!location) + return false; + + if(afbclient.call_sync(std::string("gps"), std::string("location"), NULL, &j_resp) < 0) + return false; + + if(config.getLogLevel() > 1) { + std::cerr << __FUNCTION__ << ": j_resp = " << \ + json_object_to_json_string_ext(j_resp, JSON_C_TO_STRING_SPACED | JSON_C_TO_STRING_PRETTY) << \ + std::endl; + } + + // Check status + rc = false; + struct json_object *j_request; + if(!json_object_object_get_ex(j_resp, "request", &j_request)) + goto location_error; + + struct json_object *j_status; + if(!json_object_object_get_ex(j_request, "status", &j_status)) + goto location_error; + + status = json_object_get_string(j_status); + if(status == "failed") + goto location_error; + + // Get location data + struct json_object *j_response; + if(!json_object_object_get_ex(j_resp, "response", &j_response)) + goto location_error; + + struct json_object *j_latitude; + if(!json_object_object_get_ex(j_response, "latitude", &j_latitude)) + goto location_error; + + struct json_object *j_longitude; + if(!json_object_object_get_ex(j_response, "longitude", &j_longitude)) + goto location_error; + + struct json_object *j_speed; + if(!json_object_object_get_ex(j_response, "speed", &j_speed)) + goto location_error; + + struct json_object *j_track; + if(!json_object_object_get_ex(j_response, "track", &j_track)) + goto location_error; + + struct json_object *j_timestamp; + if(!json_object_object_get_ex(j_response, "timestamp", &j_timestamp)) + goto location_error; + + location->latitude = json_object_get_double(j_latitude); + location->longitude = json_object_get_double(j_longitude); + location->speed = json_object_get_int(j_speed); + location->track = json_object_get_int(j_track); + location->timestamp = json_object_get_string(j_timestamp); + rc = true; + +location_error: + json_object_put(j_resp); + return rc; +} -- cgit 1.2.3-korg