bh1749: Add examples for all languages

* Examples for C/C++/Python/Java/JavaScript
* Add Java example to CMakeLists

Signed-off-by: Assam Boudjelthia <assam.boudjelthia@fi.rohmeurope.com>

examples/c/bh1749.c

@@ -0,0 +1,73 @@
+/*
+* 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 <stdio.h>
+#include <signal.h>
+#include "bh1749.h"
+#include "upm_utilities.h"
+
+bool isStopped;
+#define SENSOR_ADDR 0x39
+#define I2C_BUS 0
+
+void signal_int_handler(int signo)
+{
+    if (signo == SIGINT)
+        isStopped = true;
+}
+
+void print_data(void *dev)
+{
+	uint16_t result[5];
+	bh1749_get_measurements((bh1749_context)dev, result);
+	printf("R: %d, G: %d, B: %d, IR: %d, G2: %d\n", result[0],
+			result[1], result[2], result[3], result[4]);
+	bh1749_reset_interrupt(dev);
+}
+
+int main(int argc, char **argv)
+{
+	signal(SIGINT, signal_int_handler);
+
+	bh1749_context dev = bh1749_init(I2C_BUS, SENSOR_ADDR);
+	if (!dev) {
+        printf("bh1749_init() failed.\n");
+        return -1;
+    }
+
+	bh1749_soft_reset(dev);
+	bh1749_sensor_init(dev, INT_JUDGE_1, MEAS_240MS, RGB_GAIN_1X, IR_GAIN_1X, RED);
+	bh1749_set_threshold_high(dev, 511);
+	bh1749_enable_interrupt(dev);
+	printf("Installing ISR\n");
+	bh1749_install_isr(dev, MRAA_GPIO_EDGE_FALLING, 33, &print_data, (void *)dev);
+	bh1749_enable(dev);
+
+	while(!isStopped) {
+		upm_delay_ms(1000);
+	}
+
+	bh1749_close(dev);
+	return 0;
+}