2 * Author: Brendan Le Foll <brendan.le.foll@intel.com>
3 * Copyright (c) 2014 Intel Corporation.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 #include <mraa/gpio.h>
30 struct thresholdContext {
39 * @brief C++ API for Microphone
41 * This file defines the Microphone Analog sensor
43 * @snippet mic-example.cxx Interesting
49 * Instanciates a Microphone object
51 * @param micPin pin where microphone is connected
53 Microphone(int micPin);
56 * MAX31723 object destructor
61 * Get samples from microphone according to provided window and
64 * @return freqMS time between each sample (in microseconds)
65 * @return numberOfSamples number of sample to sample for this window
66 * @return buffer bufer with sampled data
68 int getSampledWindow (unsigned int freqMS, unsigned int numberOfSamples, uint16_t * buffer);
71 * Given sampled buffer this method will return TRUE/FALSE if threshold
74 * @return threshold sample threshold
75 * @return buffer buffer with samples
76 * @return len bufer len
78 int findThreshold (thresholdContext* ctx, unsigned int threshold, uint16_t * buffer, unsigned int len);
80 void printGraph (thresholdContext* ctx);
83 mraa_aio_context m_micCtx;