microphone: added new sensor

Signed-off-by: Kiveisha Yevgeniy <yevgeniy.kiveisha@intel.com>
This commit is contained in:
Kiveisha Yevgeniy 2014-06-20 15:25:43 +00:00
parent 2fa9b7b6c9
commit 81c8baa071
7 changed files with 281 additions and 0 deletions

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@ -19,6 +19,7 @@ add_executable (max31855-example max31855.cxx)
add_executable (gy65-example gy65.cxx)
add_executable (stepmotor-example stepmotor.cxx)
add_executable (pulsensor-example pulsensor.cxx)
add_executable (mic-example mic-example.cxx)
include_directories (${PROJECT_SOURCE_DIR}/src/hmc5883l)
include_directories (${PROJECT_SOURCE_DIR}/src/grove)
@ -36,6 +37,7 @@ include_directories (${PROJECT_SOURCE_DIR}/src/max31855)
include_directories (${PROJECT_SOURCE_DIR}/src/gy65)
include_directories (${PROJECT_SOURCE_DIR}/src/stepmotor)
include_directories (${PROJECT_SOURCE_DIR}/src/pulsensor)
include_directories (${PROJECT_SOURCE_DIR}/src/mic)
target_link_libraries (compass hmc5883l ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (groveled grove ${CMAKE_THREAD_LIBS_INIT})
@ -58,3 +60,4 @@ target_link_libraries (max31855-example max31855 ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (gy65-example gy65 ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (stepmotor-example stepmotor ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (pulsensor-example pulsensor ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (mic-example mic ${CMAKE_THREAD_LIBS_INIT})

74
examples/mic-example.cxx Normal file
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@ -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 "mic.h"
#include <signal.h>
#include <stdlib.h>
#include <sys/time.h>
int is_running = 0;
uint16_t buffer [128];
upm::Microphone *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::Microphone(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);
if (thresh) {
// do something ....
}
}
}
std::cout << "exiting application" << std::endl;
delete sensor;
return 0;
}
//! [Interesting]

5
src/mic/CMakeLists.txt Normal file
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@ -0,0 +1,5 @@
set (libname "mic")
set (libdescription "Microphone simple API")
set (module_src ${libname}.cxx)
set (module_h ${libname}.h)
upm_module_init()

7
src/mic/jsupm_mic.i Normal file
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@ -0,0 +1,7 @@
%module jsupm_mic
%{
#include "mic.h"
%}
%include "mic.h"

96
src/mic/mic.cxx Normal file
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@ -0,0 +1,96 @@
/*
* 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 <iostream>
#include <unistd.h>
#include <stdlib.h>
#include <functional>
#include <string.h>
#include "mic.h"
using namespace upm;
Microphone::Microphone(int micPin) {
// initialise analog mic input
m_micCtx = maa_aio_init(micPin);
}
Microphone::~Microphone() {
// close analog input
maa_result_t error;
error = maa_aio_close(m_micCtx);
if (error != MAA_SUCCESS) {
maa_result_print(error);
}
}
int
Microphone::getSampledWindow (unsigned int freqMS, unsigned int numberOfSamples,
uint16_t * buffer) {
int sampleIdx = 0;
// must have freq
if (!freqMS) {
return 0;
}
// too much samples
if (numberOfSamples > 0xFFFFFF) {
return 0;
}
while (sampleIdx < numberOfSamples) {
buffer[sampleIdx++] = maa_aio_read (m_micCtx);
usleep(freqMS * 1000);
}
return sampleIdx;
}
int
Microphone::findThreshold (thresholdContext* ctx, unsigned int threshold,
uint16_t * buffer, unsigned int len) {
long sum = 0;
for (unsigned int i = 0; i < len; i++) {
sum += buffer[i];
}
ctx->averageReading = sum / len;
ctx->runningAverage = (((ctx->averagedOver-1) * ctx->runningAverage) + ctx->averageReading) / ctx->averagedOver;
if (ctx->runningAverage > threshold) {
return ctx->runningAverage;
} else {
return 0;
}
}
void
Microphone::printGraph (thresholdContext* ctx) {
for (int i = 0; i < ctx->runningAverage; i++)
std::cout << ".";
std::cout << std::endl;
}

86
src/mic/mic.h Normal file
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@ -0,0 +1,86 @@
/*
* 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 <string>
#include <maa/gpio.h>
#include <maa/aio.h>
struct thresholdContext {
long averageReading;
long runningAverage;
int averagedOver;
};
namespace upm {
/**
* @brief C++ API for Microphone
*
* This file defines the Microphone Analog sensor
*
* @snippet mic-example.cxx Interesting
*
*/
class Microphone {
public:
/**
* Instanciates a Microphone object
*
* @param micPin pin where microphone is connected
*/
Microphone(int micPin);
/**
* MAX31723 object destructor
*/
~Microphone();
/**
* Get samples from microphone according to provided window and
* number of samples
*
* @return freqMS time between each sample (in microseconds)
* @return numberOfSamples number of sample to sample for this window
* @return buffer bufer with sampled data
*/
int getSampledWindow (unsigned int freqMS, unsigned int numberOfSamples, uint16_t * buffer);
/**
* Given sampled buffer this method will return TRUE/FALSE if threshold
* was reached
*
* @return threshold sample threshold
* @return buffer buffer with samples
* @return len bufer len
*/
int findThreshold (thresholdContext* ctx, unsigned int threshold, uint16_t * buffer, unsigned int len);
void printGraph (thresholdContext* ctx);
private:
maa_aio_context m_micCtx;
};
}

10
src/mic/pyupm_mic.i Normal file
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@ -0,0 +1,10 @@
%module pyupm_mic
%include "stdint.i"
%feature("autodoc", "3");
%include "mic.h"
%{
#include "mic.h"
%}