o2: Added O2 sensor C source

Added the C source for the O2 sensor with necessary changes to cmake,
examples, docs.

    * Renamed all files with groveo2 to o2
    * Replaced all instances of groveo2 with o2
    * Added C source for o2 sensor
    * Updated all cmake files
    * Added C example for o2 sensor

Signed-off-by: Noel Eck <noel.eck@intel.com>

examples/c++/CMakeLists.txt

@@ -170,7 +170,7 @@ add_example (otp538u)
 add_example (grovecollision)
 add_example (groveelectromagnet)
 add_example (groveemg)
-add_example (groveo2)
+add_example (o2)
 add_example (grovegsr)
 add_example (ina132)
 add_example (l298)

examples/c++/o2.cxx

@@ -24,7 +24,7 @@
 #include <unistd.h>
 #include <iostream>
 #include <signal.h>
-#include "groveo2.hpp"
+#include "o2.hpp"
 
 using namespace std;
 
@@ -42,8 +42,8 @@ int main(int argc, char **argv)
 
 //! [Interesting]
   // The was tested with the O2 Oxygen Concentration Sensor Module
-  // Instantiate a GroveO2 on analog pin A0
+  // Instantiate a O2 on analog pin A0
-  upm::GroveO2 *O2 = new upm::GroveO2(0);
+  upm::O2 *O2 = new upm::O2(0);
   while (shouldRun)
   {
     cout << "The output voltage is: " << O2->voltageValue() << "mV" << endl;

examples/c/CMakeLists.txt

@@ -96,6 +96,7 @@ add_example (hka5)
 add_example (dfrorp)
 add_example (vdiv)
 add_example (mqx)
+add_example (o2)
 
 # Custom examples
 add_custom_example (nmea_gps_i2c-example-c nmea_gps_i2c.c nmea_gps)

examples/c/o2.c

@@ -0,0 +1,75 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2016 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 <signal.h>
+
+#include "o2.h"
+
+bool shouldRun = true;
+
+void sig_handler(int signo)
+{
+    if (signo == SIGINT)
+        shouldRun = false;
+}
+
+int main()
+{
+    signal(SIGINT, sig_handler);
+
+    //! [Interesting]
+
+    // Instantiate a o2 sensor on analog pin A0
+    o2_context sensor = o2_init(0);
+
+    if (!sensor)
+    {
+        printf("o2_init() failed.\n");
+        return -1;
+    }
+
+    // Every half a second, sample the sensor output
+    while (shouldRun)
+    {
+        float raw_volts = 0.0;
+        float o2_percent = 0.0;
+
+        o2_get_raw_volts(sensor, &raw_volts);
+        o2_get_value(sensor, &o2_percent);
+
+        printf("O2 raw volts: %0.03f v, o2: %0.03f %\n",
+                raw_volts, o2_percent);
+
+        usleep(500000);
+    }
+
+    //! [Interesting]
+
+    printf("Exiting\n");
+
+    o2_close(sensor);
+
+    return 0;
+}

examples/java/CMakeLists.txt

@@ -44,7 +44,7 @@ add_example(GroveMDSample grovemd)
 add_example(GroveMoistureSample grovemoisture)
 add_example(GroveMQ3 gas)
 add_example(GroveMQ9 gas)
-add_example(GroveO2Example groveo2)
+add_example(O2Example o2)
 add_example(GroveQTouch at42qt1070)
 add_example(GroveRelaySample grove)
 add_example(GroveRotarySample grove)

examples/java/O2Example.java

@@ -22,15 +22,15 @@
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-import upm_groveo2.GroveO2;
+import upm_o2.O2;
 
-public class GroveO2Example {
+public class O2Example {
 
 	public static void main(String[] args) {
 		// TODO Auto-generated method stub
 		//! [Interesting]
 		// Initializing the Grove O2 sensor on the A) analog pin
-		GroveO2 o2 = new GroveO2(0);
+		O2 o2 = new O2(0);
 
 		while(true){
 			System.out.println("The output voltage is: "+o2.voltageValue());

examples/javascript/o2.js

@@ -21,15 +21,15 @@
 * 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 groveO2_lib = require("jsupm_groveo2");
+var O2_lib = require("jsupm_o2");
 
 // The was tested with the O2 Oxygen Concentration Sensor Module
-// Instantiate a GroveO2 on analog pin A0
+// Instantiate a O2 on analog pin A0
-var groveO2_obj = new groveO2_lib.GroveO2(0);
+var O2_obj = new O2_lib.O2(0);
 
 var myInterval = setInterval(function()
 {
-	console.log("The output voltage is: " + roundNum(groveO2_obj.voltageValue(), 5) + "mV");
+	console.log("The output voltage is: " + roundNum(O2_obj.voltageValue(), 5) + "mV");
 }, 100);
 
 function roundNum(num, decimalPlaces)
@@ -42,9 +42,9 @@ function roundNum(num, decimalPlaces)
 process.on('SIGINT', function()
 {
 	clearInterval(myInterval);
-	groveO2_obj = null;
+	O2_obj = null;
-	groveO2_lib.cleanUp();
+	O2_lib.cleanUp();
-	groveO2_lib = null;
+	O2_lib = null;
 	console.log("Exiting...");
 	process.exit(0);
 });

examples/python/o2.py

@@ -22,11 +22,11 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 import time, sys, signal, atexit
-import pyupm_groveo2 as upmGroveo2
+import pyupm_o2 as upmO2
 
 # This was tested with the O2 Oxygen Concentration Sensor Module
-# Instantiate a GroveO2 on analog pin A0
+# Instantiate a O2 on analog pin A0
-myGroveO2 = upmGroveo2.GroveO2(0)
+myO2 = upmO2.O2(0)
 
 
 ## Exit handlers ##
@@ -34,7 +34,7 @@ myGroveO2 = upmGroveo2.GroveO2(0)
 def SIGINTHandler(signum, frame):
 	raise SystemExit
 
-# This lets you run code on exit, including functions from myGroveO2
+# This lets you run code on exit, including functions from myO2
 def exitHandler():
 	print "Exiting"
 	sys.exit(0)
@@ -46,6 +46,6 @@ signal.signal(signal.SIGINT, SIGINTHandler)
 
 while(1):
 	print "The output voltage is: {0}mV".format(
-	myGroveO2.voltageValue())
+	myO2.voltageValue())
 
 	time.sleep(.1)

src/groveo2/CMakeLists.txt

@@ -1,5 +0,0 @@
-set (libname "groveo2")
-set (libdescription "upm groveO2 oxygen concentration sensor module")
-set (module_src ${libname}.cxx)
-set (module_hpp ${libname}.hpp)
-upm_module_init()

src/groveo2/jsupm_groveo2.i

@@ -1,8 +0,0 @@
-%module jsupm_groveo2
-%include "../upm.i"
-
-%{
-    #include "groveo2.hpp"
-%}
-
-%include "groveo2.hpp"

src/o2/CMakeLists.txt

@@ -0,0 +1,8 @@
+upm_mixed_module_init (NAME o2
+    DESCRIPTION "upm O2 oxygen concentration sensor module"
+    C_HDR o2.h
+    C_SRC o2.c
+    CPP_HDR o2.hpp
+    CPP_SRC o2.cxx
+    FTI_SRC o2_fti.c
+    REQUIRES mraa)

src/o2/javaupm_o2.i

@@ -1,16 +1,16 @@
-%module javaupm_groveo2
+%module javaupm_o2
 %include "../upm.i"
 
 %{
-    #include "groveo2.hpp"
+    #include "o2.hpp"
 %}
 
-%include "groveo2.hpp"
+%include "o2.hpp"
 
 %pragma(java) jniclasscode=%{
     static {
         try {
-            System.loadLibrary("javaupm_groveo2");
+            System.loadLibrary("javaupm_o2");
         } catch (UnsatisfiedLinkError e) {
             System.err.println("Native code library failed to load. \n" + e);
             System.exit(1);

src/o2/jsupm_o2.i

@@ -0,0 +1,8 @@
+%module jsupm_o2
+%include "../upm.i"
+
+%{
+    #include "o2.hpp"
+%}
+
+%include "o2.hpp"

src/o2/o2.c

@@ -0,0 +1,131 @@
+/*
+ * Author:
+ * 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 <string.h>
+#include <stdlib.h>
+
+#include "o2.h"
+o2_context o2_init(int16_t pin)
+{
+    o2_context dev = (o2_context)malloc(sizeof(struct _o2_context));
+
+    if(dev == NULL) return NULL;
+
+    /* Init aio pin */
+    dev->aio = mraa_aio_init(pin);
+    if(dev->aio == NULL) {
+        free(dev);
+        return NULL;
+    }
+
+    /* Set defaults */
+    dev->m_aRef = 5.0;
+    dev->m_offset = 0.0;
+    dev->m_scale = 1.0;
+
+    return dev;
+}
+
+void o2_close(o2_context dev)
+{
+    mraa_aio_close(dev->aio);
+    free(dev);
+}
+
+upm_result_t o2_set_aref(const o2_context dev, float aref)
+{
+    dev->m_aRef = aref;
+    return UPM_SUCCESS;
+}
+
+float o2_get_aref(const o2_context dev)
+{
+    return dev->m_aRef;
+}
+
+upm_result_t o2_set_offset(const o2_context dev, float offset)
+{
+    dev->m_offset = offset;
+    return UPM_SUCCESS;
+}
+
+float o2_get_offset(const o2_context dev)
+{
+    return dev->m_offset;
+}
+
+upm_result_t o2_set_scale(const o2_context dev, float scale)
+{
+    dev->m_scale = scale;
+    return UPM_SUCCESS;
+}
+
+float o2_get_scale(const o2_context dev)
+{
+    return dev->m_scale;
+}
+
+upm_result_t o2_get_counts(const o2_context dev, int *value)
+{
+    /* Read counts */
+    *value = mraa_aio_read(dev->aio);
+    if (*value < 0) return UPM_ERROR_OPERATION_FAILED;
+    return UPM_SUCCESS;
+}
+
+upm_result_t o2_get_raw_volts(const o2_context dev, float *value)
+{
+    /* Read normalized adc value */
+    *value = mraa_aio_read_float(dev->aio);
+    if (*value < 0.0) return UPM_ERROR_OPERATION_FAILED;
+
+    /* Convert normalized value to voltage via aRef */
+    *value *= dev->m_aRef;
+
+    return UPM_SUCCESS;
+}
+
+upm_result_t o2_get_value(const o2_context dev, float *value)
+{
+    /* Read normalized value */
+    *value = mraa_aio_read_float(dev->aio);
+    if (*value < 0.0)
+        return UPM_ERROR_OPERATION_FAILED;
+
+    /* Apply raw scale */
+    *value *= dev->m_scale;
+
+    /* Convert to %oxygen
+       Datasheet for grove o2 shows a linear response for the sensor.  Assuming
+       20.5% oxygen @ 25 celsius, with an gain = 1 + 12k/100 = 121, a
+       dynamic range of 0->25% oxygen, and opamp rails of 0->3.3v (the grove o2
+       sensor uses a high-accuracy 3.3v regulator),
+     */
+    *value *= 25 * dev->m_aRef/3.3;
+
+    *value += dev->m_offset;
+
+    return UPM_SUCCESS;
+}
+

src/o2/o2.cxx

@@ -26,12 +26,12 @@
 #include <string>
 #include <stdexcept>
 
-#include "groveo2.hpp"
+#include "o2.hpp"
 
 using namespace upm;
 using namespace std;
 
-GroveO2::GroveO2(int pin)
+O2::O2(int pin)
 {
     if ( !(m_aio = mraa_aio_init(pin)) )
     {
@@ -41,12 +41,12 @@ GroveO2::GroveO2(int pin)
     }
 }
 
-GroveO2::~GroveO2()
+O2::~O2()
 {
   mraa_aio_close(m_aio);
 }
 
-float GroveO2::voltageValue()
+float O2::voltageValue()
 {
 	int val = mraa_aio_read(m_aio);
 	if (val == -1) return -1.0f;

src/o2/o2.h

@@ -0,0 +1,135 @@
+/*
+ * Author:
+ * 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 "upm.h"
+#include "mraa/aio.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * device context
+ */
+typedef struct _o2_context {
+    /* mraa aio pin context */
+    mraa_aio_context aio;
+    /* Analog voltage reference */
+    float m_aRef;
+    /* Scale */
+    float m_scale;
+    /* Offset in sensor units */
+    float m_offset;
+} *o2_context;
+
+/**
+ * Initialize analog sensor
+ * @param pin is Analog pin
+ * @return sensor context as void pointer
+ */
+o2_context o2_init(int16_t pin);
+
+/**
+ * Analog sensor destructor
+ * @param sensor context pointer deallocate memory
+ */
+void o2_close(o2_context dev);
+
+/**
+ * Set sensor adc vref.
+ * @param dev sensor context pointer
+ * @param aref Voltage reference routed to ADC ref pin
+ * @return Function result code
+ */
+upm_result_t o2_set_aref(const o2_context dev, float aref);
+
+/**
+ * Get sensor adc vref
+ * @param dev sensor context pointer
+ * @return Current adc vref
+ */
+float o2_get_aref(const o2_context dev);
+
+/**
+ * Set sensor offset.  This offset is applied to the return value:
+ *     counts = counts * scale + offset * scale
+ * @param dev sensor context pointer
+ * @param offset count offset value used
+ * @return Function result code
+ */
+upm_result_t o2_set_offset(const o2_context dev, float offset);
+
+/**
+ * Get sensor offset
+ * @param dev sensor context pointer
+ * @return Current sensor offset
+ */
+float o2_get_offset(const o2_context dev);
+
+/**
+ * Set sensor scale.  This scale is applied to the return value:
+ *     counts = counts * scale + offset * scale
+ * @param dev sensor context pointer
+ * @param scale count scale value used
+ * @return Function result code
+ */
+upm_result_t o2_set_scale(const o2_context dev, float scale);
+
+/**
+ * Get sensor scale
+ * @param dev sensor context pointer
+ * @return Current sensor scale
+ */
+float o2_get_scale(const o2_context dev);
+
+/**
+ * Read raw adc counts from sensor
+ * @param dev sensor context pointer
+ * @param *value Raw adc value
+ * @return Function result code
+ */
+upm_result_t o2_get_counts(const o2_context dev, int *value);
+
+/**
+ * Read voltage from sensor
+ * @param dev sensor context pointer
+ * @param *value Voltage (v)
+ * @return Function result code
+ */
+upm_result_t o2_get_raw_volts(const o2_context dev, float *value);
+
+/**
+ * Read value from sensor
+ * @param dev sensor context pointer
+ * @param *value O2 percentage
+ * @return Function result code
+ */
+upm_result_t o2_get_value(const o2_context dev, float *value);
+
+#ifdef __cplusplus
+}
+#endif

src/o2/o2.hpp

@@ -29,13 +29,13 @@
 namespace upm {
   /**
    * @brief Grove O2 Oxygen Gas Sensor library
-   * @defgroup groveo2 libupm-groveo2
+   * @defgroup o2 libupm-o2
    * @ingroup seeed analog gaseous
    */
 
   /**
-   * @library groveo2
+   * @library o2
-   * @sensor groveo2
+   * @sensor o2
    * @comname Grove O2 Sensor
    * @type gaseous
    * @man seeed
@@ -45,21 +45,21 @@ namespace upm {
    *
    * The Grove O2 Oxygen Gas sensor measures the oxygen concentration in the air
    *
-   * @image html groveo2.jpg    
+   * @image html o2.jpg    
-   * @snippet groveo2.cxx Interesting
+   * @snippet o2.cxx Interesting
    */
-  class GroveO2 {
+  class O2 {
   public:
     /**
      * Grove O2 Oxygen Gas sensor constructor
      *
      * @param pin Analog pin to use
      */
-    GroveO2(int pin);
+    O2(int pin);
     /**
-     * GroveO2 destructor
+     * O2 destructor
      */
-    ~GroveO2();
+    ~O2();
     /**
      * Measures O2 from the sensor
      *

src/o2/o2_fti.c

@@ -0,0 +1,116 @@
+/*
+ * Author:
+ * 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 "o2.h"
+#include "upm_fti.h"
+#include "fti/upm_sensor.h"
+#include "fti/upm_raw.h"
+
+/** 
+ * This file implements the Function Table Interface (FTI) for this sensor
+ */
+
+const char upm_o2_name[] = "O2";
+const char upm_o2_description[] = "Analog oxygen sensor";
+const upm_protocol_t upm_o2_protocol[] = {UPM_ANALOG};
+const upm_sensor_t upm_o2_category[] = {UPM_RAW};
+
+// forward declarations
+const void* upm_o2_get_ft(upm_sensor_t sensor_type);
+void* upm_o2_init_str(const char* protocol, const char* params);
+void upm_o2_close(void* dev);
+const upm_sensor_descriptor_t upm_o2_get_descriptor();
+upm_result_t upm_o2_set_offset(const void* dev, float offset);
+upm_result_t upm_o2_set_scale(const void* dev, float scale);
+upm_result_t upm_o2_get_value(const void* dev, float *value);
+
+/* This sensor implementes 2 function tables */
+/* 1. Generic base function table */
+static const upm_sensor_ft ft_gen =
+{
+    .upm_sensor_init_name = &upm_o2_init_str,
+    .upm_sensor_close = &upm_o2_close,
+    .upm_sensor_get_descriptor = &upm_o2_get_descriptor
+};
+
+/* 2. RAW function table */
+static const upm_raw_ft ft_raw =
+{
+    .upm_raw_set_offset = &upm_o2_set_offset,
+    .upm_raw_set_scale = &upm_o2_set_scale,
+    .upm_raw_get_value = &upm_o2_get_value
+};
+
+const void* upm_o2_get_ft(upm_sensor_t sensor_type)
+{
+    switch(sensor_type)
+    {
+        case UPM_SENSOR:
+            return &ft_gen;
+        case UPM_RAW:
+            return &ft_raw;
+        default:
+            return NULL;
+    }
+}
+
+void* upm_o2_init_str(const char* protocol, const char* params)
+{
+    fprintf(stderr, "String initialization - not implemented, using ain0: %s\n", __FILE__);
+    return o2_init(0);
+}
+
+void upm_o2_close(void* dev)
+{
+    o2_close((o2_context)dev);
+}
+
+const upm_sensor_descriptor_t upm_o2_get_descriptor()
+{
+    /* Fill in the descriptor */
+    upm_sensor_descriptor_t usd;
+    usd.name = upm_o2_name;
+    usd.description = upm_o2_description;
+    usd.protocol_size = 1;
+    usd.protocol = upm_o2_protocol;
+    usd.category_size = 1;
+    usd.category = upm_o2_category;
+
+    return usd;
+}
+
+upm_result_t upm_o2_set_offset(const void* dev, float offset)
+{
+    return o2_set_offset((o2_context)dev, offset);
+}
+
+upm_result_t upm_o2_set_scale(const void* dev, float scale)
+{
+    return o2_set_scale((o2_context)dev, scale);
+}
+
+upm_result_t upm_o2_get_value(const void* dev, float *value)
+{
+    return o2_get_value((o2_context)dev, value);
+}

src/o2/pyupm_o2.i

@@ -1,11 +1,11 @@
 // Include doxygen-generated documentation
 %include "pyupm_doxy2swig.i"
-%module pyupm_groveo2
+%module pyupm_o2
 %include "../upm.i"
 
 %feature("autodoc", "3");
 
-%include "groveo2.hpp"
+%include "o2.hpp"
 %{
-    #include "groveo2.hpp"
+    #include "o2.hpp"
 %}