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authorScott Murray <scott.murray@konsulko.com>2019-04-22 21:38:18 -0400
committerScott Murray <scott.murray@konsulko.com>2019-04-22 22:42:06 -0400
commitb523b0c8cc37a989bfb84a5ebefe1ec1f2b0cbfb (patch)
tree482f3fee892fc0a0a327d256bd25134fb6996e15 /app/gps.cpp
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 <scott.murray@konsulko.com>
Diffstat (limited to 'app/gps.cpp')
-rw-r--r--app/gps.cpp89
1 files changed, 89 insertions, 0 deletions
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 <string>
+#include <iostream>
+#include <json-c/json.h>
+
+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;
+}