mq2:: added new sensor

Signed-off-by: Kiveisha Yevgeniy <yevgeniy.kiveisha@intel.com>

examples/CMakeLists.txt

@@ -29,6 +29,7 @@ add_executable (nrf8001-helloworld-example nrf8001_helloworld.cxx)
 add_executable (lpd8806-example lpd8806-example.cxx)
 add_executable (mlx90614-example mlx90614-example.cxx)
 add_executable (ecs1030-example ecs1030-example.cxx)
+add_executable (mq2-example mq2-example.cxx)
 add_executable (mq9-example mq9-example.cxx)
 
 include_directories (${PROJECT_SOURCE_DIR}/src/hmc5883l)
@@ -89,4 +90,5 @@ target_link_libraries (nrf8001-helloworld-example nrf8001 ${CMAKE_THREAD_LIBS_IN
 target_link_libraries (lpd8806-example lpd8806 ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (mlx90614-example mlx90614 ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (ecs1030-example ecs1030 ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries (mq2-example gas ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (mq9-example gas ${CMAKE_THREAD_LIBS_INIT})

examples/mq2-example.cxx

@@ -0,0 +1,74 @@
+/*
+ * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * 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 <unistd.h>
+#include <iostream>
+#include "mq2.h"
+#include <signal.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+int is_running = 0;
+uint16_t buffer [128];
+upm::MQ2 *sensor = NULL;
+
+void
+sig_handler(int signo)
+{
+    printf("got signal\n");
+    if (signo == SIGINT) {
+        is_running = 1;
+    }
+}
+
+//! [Interesting]
+int
+main(int argc, char **argv)
+{
+    sensor = new upm::MQ2(0);
+    signal(SIGINT, sig_handler);
+
+    thresholdContext ctx;
+    ctx.averageReading = 0;
+    ctx.runningAverage = 0;
+    ctx.averagedOver   = 2;
+
+    while (!is_running) {
+        int len = sensor->getSampledWindow (2, 128, buffer);
+        if (len) {
+            int thresh = sensor->findThreshold (&ctx, 30, buffer, len);
+            sensor->printGraph(&ctx, 5);
+            if (thresh) {
+                // do something ....
+            }
+        }
+    }
+
+    std::cout << "exiting application" << std::endl;
+
+    delete sensor;
+
+    return 0;
+}
+//! [Interesting]

src/gas/CMakeLists.txt

@@ -1,5 +1,5 @@
 set (libname "gas")
 set (libdescription "Gas sensors")
-set (module_src ${libname}.cxx mq9.cxx)
-set (module_h ${libname}.h mq9.h)
+set (module_src ${libname}.cxx mq2.cxx mq9.cxx)
+set (module_h ${libname}.h mq2.h mq9.h)
 upm_module_init()

src/gas/mq2.cxx

@@ -0,0 +1,33 @@
+/*
+ * Author: Brendan Le Foll <brendan.le.foll@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * 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 "mq2.h"
+
+using namespace upm;
+
+MQ2::MQ2 (int gasPin) : Gas (gasPin) {
+}
+
+MQ2::~MQ2 () {
+}

src/gas/mq2.h

@@ -0,0 +1,60 @@
+/*
+ * Author: Brendan Le Foll <brendan.le.foll@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * 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.
+ */
+#pragma once
+
+#include <iostream>
+#include <string>
+#include "gas.h"
+
+namespace upm {
+    /**
+     * @brief C++ API for MQ2 gas sensor
+     *
+     * @snippet mq2-example.cxx Interesting
+     */
+    class MQ2 : public Gas {
+        public:
+            /**
+             * MQ2 constructor
+             *
+             * @param gasPin analog pin where sensor connected
+             */
+            MQ2 (int gasPin);
+
+            /**
+             * MQ2 destructor
+             */
+            ~MQ2 ();
+
+            /**
+             * Return name of the component
+             */
+            std::string name()
+            {
+                return m_name;
+            }
+        private:
+            std::string m_name;
+    };
+}