BH1792: Add examples for all languages

- Examples for C/C++/Python/Java/JavaScript
- Add build line for java BH1792_Example

Signed-off-by: Assam Boudjelthia <assam.boudjelthia@fi.rohmeurope.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/c++/bh1792.cxx

@@ -0,0 +1,79 @@
+/*
+* The MIT License (MIT)
+*
+* Author: Assam Boudjelthia
+* Copyright (c) 2018 Rohm Semiconductor.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of
+* this software and associated documentation files (the "Software"), to deal in
+* the Software without restriction, including without limitation the rights to
+* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+* the Software, and to permit persons to whom the Software is furnished to do so,
+* subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all
+* copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <iostream>
+#include <signal.h>
+#include  <sys/time.h>
+#include "bh1792.hpp"
+#include "upm_utilities.h"
+
+bool isStopped;
+upm::BH1792 dev;
+
+void signal_int_handler(int signo)
+{
+    if (signo == SIGINT)
+        isStopped = true;
+}
+
+void PrintData(void *args)
+{
+	std::vector<std::vector<int>> fifo;
+	struct timespec now;
+
+	clock_gettime(CLOCK_MONOTONIC_RAW, &now);
+	try {
+		fifo = dev.GetFifoData();
+
+		std::cout << "\nHeart beat sensor FIFO data:" << std::endl;
+		for(int i = 0; i < 32; i++)
+			std::cout << i << ": off: " << fifo.at(i).at(0) << ", on: " <<
+						fifo.at(i).at(1) << std::endl;
+
+		std::cout << "timestamp " << now.tv_sec << " sec, " << now.tv_nsec <<
+					" nsec" << std::endl;
+	} catch (std::exception& e) {
+		std::cout << "Failed to read FIFO data" << std::endl;
+		throw;
+	}
+}
+
+int main(int argc, char **argv)
+{
+	float measTime;
+
+	signal(SIGINT, signal_int_handler);
+	dev.SoftReset();
+	dev.EnableSyncMode(256, 32);
+	std::cout << "Installing ISR" << std::endl;
+	dev.InstallISR(MRAA_GPIO_EDGE_FALLING, 33, &PrintData, NULL);
+	measTime = dev.GetMeasurementTimeMS();
+	dev.StartMeasurement();
+
+	while(!isStopped) {
+		usleep(measTime * 1000);
+	}
+
+	return 0;
+}