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examples/raspi/rf95/shared/gpsMT3339.h

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+// -*- mode: C++ -*-
+/*
+ * gpsMT3339.h
+ *
+ *  Created on: Jun 11, 2020
+ *      Author: Tilman Glötzner
+ */
+
+#ifndef GPSMT3339_H_
+#define GPSMT3339_H_
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <errno.h>
+#include <string.h>
+
+#define LEN_GPS_READ_BUFFER 255
+#define LEN_GPS_INFO_BUFFER 20
+#define LEN_GPS_SENTENCE_BUFFER 100
+
+// reading the serial port may eventually lock up.
+// MAX_EMPTY_READ determines how many consecutive reads yielding no results, i.e.
+// nofCharRead = 0, may occur before the program tries to reopen the gps device
+#define MAX_EMPTY_READ 15
+#define GPS_DEVICE "/dev/ttyS0"
+
+
+
+class gps_MT3339 {
+public:
+	gps_MT3339(const char* SerialDevice,pthread_mutex_t* mutex);
+	virtual ~gps_MT3339();
+	void*  read_gps(void* ptr);
+	char* getLatitude();
+	char* getLongitude();
+	char* getTimestamp();
+	void stop();
+
+
+private:
+	char *strnstr(const char *haystack, const char *needle, size_t len);
+	char longitude[LEN_GPS_INFO_BUFFER]="NoInit";
+	char latitude[LEN_GPS_INFO_BUFFER]="NoInit";
+	char timestamp[LEN_GPS_INFO_BUFFER]="NoInit";
+	bool stop_reading = false;
+	char *gpsDevice;
+	pthread_mutex_t* mutex;
+};
+
+#endif /* GPSMT3339_H_ */