ina132: initial implementation

This module was tested with the Grove Differential Amplifier, with a
weight sensor attached.

Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: John Van Drasek <john.r.van.drasek@intel.com>

examples/c++/CMakeLists.txt

@@ -93,6 +93,7 @@ add_executable (groveelectromagnet-example groveelectromagnet.cxx)
 add_executable (groveemg-example groveemg.cxx)
 add_executable (groveo2-example groveo2.cxx)
 add_executable (grovegsr-example grovegsr.cxx)
+add_executable (ina132-example ina132.cxx)
 
 include_directories (${PROJECT_SOURCE_DIR}/src/hmc5883l)
 include_directories (${PROJECT_SOURCE_DIR}/src/grove)
@@ -168,6 +169,7 @@ include_directories (${PROJECT_SOURCE_DIR}/src/groveelectromagnet)
 include_directories (${PROJECT_SOURCE_DIR}/src/groveemg)
 include_directories (${PROJECT_SOURCE_DIR}/src/groveo2)
 include_directories (${PROJECT_SOURCE_DIR}/src/grovegsr)
+include_directories (${PROJECT_SOURCE_DIR}/src/ina132)
 
 target_link_libraries (hmc5883l-example hmc5883l ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (groveled-example grove ${CMAKE_THREAD_LIBS_INIT})
@@ -262,3 +264,4 @@ target_link_libraries (groveelectromagnet-example groveelectromagnet ${CMAKE_THR
 target_link_libraries (groveemg-example groveemg ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (groveo2-example groveo2 ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (grovegsr-example grovegsr ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries (ina132-example ina132 ${CMAKE_THREAD_LIBS_INIT})

examples/c++/ina132.cxx

@@ -0,0 +1,61 @@
+/*
+ * Author: Zion Orent <zorent@ics.com>
+ * Copyright (c) 2015 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 <signal.h>
+#include "ina132.h"
+
+using namespace std;
+
+bool shouldRun = true;
+
+void sig_handler(int signo)
+{
+  if (signo == SIGINT)
+    shouldRun = false;
+}
+
+int main()
+{
+  signal(SIGINT, sig_handler);
+
+//! [Interesting]
+  // The was tested with the INA132 Differential Amplifier Sensor module.
+
+  // Instantiate an INA132 on analog pin A0
+  upm::INA132 *amplifier = new upm::INA132(0);
+
+  while (shouldRun)
+  {
+      cout << amplifier->value() << endl;
+      sleep(1);
+  }
+//! [Interesting]
+
+  cout << "Exiting" << endl;
+
+  delete amplifier;
+  return 0;
+}

examples/javascript/ina132.js

@@ -0,0 +1,54 @@
+/*jslint node:true, vars:true, bitwise:true, unparam:true */
+/*jshint unused:true */
+/*
+* Author: Zion Orent <zorent@ics.com>
+* Copyright (c) 2015 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.
+*/
+var differential_amplifier_lib = require("jsupm_ina132");
+
+// The was tested with the INA132 Differential Amplifier Sensor module.
+// Instantiate an INA132 on analog pin A0
+var differential_amplifier_obj = new differential_amplifier_lib.INA132(0);
+
+var myInterval = setInterval(function()
+{
+	console.log(roundNum(differential_amplifier_obj.value(), 5));
+}, 1000);
+
+function roundNum(num, decimalPlaces)
+{
+	var extraNum = (1 / (Math.pow(10, decimalPlaces) * 1000));
+	var numerator = Math.round((num + extraNum) * (Math.pow(10, decimalPlaces)));
+	var denominator = Math.pow(10, decimalPlaces);
+	return (numerator / denominator);
+}
+
+// When exiting: clear interval, and print message
+process.on('SIGINT', function()
+{
+	clearInterval(myInterval);
+	differential_amplifier_obj = null;
+	differential_amplifier_lib.cleanUp();
+	differential_amplifier_lib = null;
+	console.log("Exiting");
+	process.exit(0);
+});

src/ina132/CMakeLists.txt

@@ -0,0 +1,5 @@
+set (libname "ina132")
+set (libdescription "upm ina132 differential amplifier sensor module")
+set (module_src ${libname}.cxx)
+set (module_h ${libname}.h)
+upm_module_init()

src/ina132/ina132.cxx

@@ -0,0 +1,60 @@
+/*
+ * Author: Zion Orent <zorent@ics.com>
+ * Copyright (c) 2015 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 <iostream>
+#include <unistd.h>
+#include "ina132.h"
+
+using namespace upm;
+using namespace std;
+
+INA132::INA132(int pin)
+{
+    if ( !(m_aio = mraa_aio_init(pin)) )
+    {
+      cerr << __FUNCTION__ << ": mraa_aio_init() failed" << endl;
+      return;
+    }
+}
+
+INA132::~INA132()
+{
+  mraa_aio_close(m_aio);
+}
+
+float INA132::value()
+{
+	int val, i;
+	float v, vo;
+	float sum=0;
+	for(i=0;i<10;i++)
+	{
+		val = mraa_aio_read(m_aio);
+		v = val*5.00/1023;
+		sum += v;
+		usleep(10000);
+	}
+	vo = sum/10;
+	return vo;
+}

src/ina132/ina132.h

@@ -0,0 +1,71 @@
+/*
+ * Author: Zion Orent <zorent@ics.com>
+ * Copyright (c) 2015 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 <string>
+#include <mraa/aio.h>
+
+namespace upm {
+  /**
+   * @brief UPM module for the INA132 Differential Amplifier Sensor
+   * @defgroup ina132 libupm-ina132
+   */
+  /**
+   * @brief C++ API for the INA132 Differential Amplifier Sensor
+   * 
+   * The INA132 Differential Amplifier Sensor is designed
+   * for precise differential-input amplification.
+   * 
+   * This sensor was tested amplifying the signal
+   * from a Weight Sensor (Load Cell)0-500g
+   *
+   * @ingroup analog ina132
+   * @snippet ina132.cxx Interesting
+   */
+  class INA132 {
+  public:
+    /**
+     * INA132 sensor constructor
+     *
+     * @param pin analog pin to use
+     */
+    INA132(int pin);
+    /**
+     * INA132 Destructor
+     */
+    ~INA132();
+
+    /**
+     * Measure precise differential-input amplification from the sensor
+     *
+     * @return precise differential-input amplification
+     */
+    float value();
+
+  private:
+    mraa_aio_context m_aio;
+  };
+}
+
+

src/ina132/jsupm_ina132.i

@@ -0,0 +1,8 @@
+%module jsupm_ina132
+%include "../upm.i"
+
+%{
+    #include "ina132.h"
+%}
+
+%include "ina132.h"

src/ina132/pyupm_ina132.i

@@ -0,0 +1,9 @@
+%module pyupm_ina132
+%include "../upm.i"
+
+%feature("autodoc", "3");
+
+%include "ina132.h"
+%{
+    #include "ina132.h"
+%}