2 * Author: Brendan Le Foll <brendan.le.foll@intel.com>
3 * Copyright (c) 2014 Intel Corporation.
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13 * The above copyright notice and this permission notice shall be
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27 #include <mraa/gpio.h>
30 struct thresholdContext {
39 * @brief C++ API for Gas sensors
41 * This file defines the Gas Analog sensors virtual functions
46 * Instanciates a Gas object
48 * @param gasPin pin where gas is connected
53 * Gas object destructor
58 * Get samples from gas sensor according to provided window and
61 * @param freqMS time between each sample (in microseconds)
62 * @param numberOfSamples number of sample to sample for this window
63 * @param buffer bufer with sampled data
65 virtual int getSampledWindow (unsigned int freqMS, unsigned int numberOfSamples, uint16_t * buffer);
68 * Given sampled buffer this method will return TRUE/FALSE if threshold
71 * @param ctx threshold context
72 * @param threshold sample threshold
73 * @param buffer buffer with samples
74 * @param len bufer len
76 virtual int findThreshold (thresholdContext* ctx, unsigned int threshold, uint16_t * buffer, unsigned int len);
79 * Return avarage data for the sampled window
81 * @param ctx threshold context
83 virtual int getSampledData (thresholdContext* ctx);
86 * Return one sample from the sensor
88 * @param ctx threshold context
90 virtual int getSample (thresholdContext* ctx);
94 * Print running average of threshold context
96 * @param ctx threshold context
98 virtual void printGraph (thresholdContext* ctx, uint8_t resolution);
101 mraa_aio_context m_gasCtx;