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https://github.com/pelgraine/Meck.git
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pelgraine
66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
/*
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Copyright (c) 2019 Arduino LLC. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PDM_H_INCLUDED
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#define _PDM_H_INCLUDED
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#if !defined(ARDUINO_NRF52_ADAFRUIT)
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#error "This library targets only Adafruit NRF52840 boards"
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#endif
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#include <Arduino.h>
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#include <Adafruit_TinyUSB.h> // for Serial
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#include "utility/PDMDoubleBuffer.h"
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class PDMClass
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{
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public:
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PDMClass(int dataPin, int clkPin, int pwrPin);
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virtual ~PDMClass();
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void setPins(int dataPin, int clkPin, int pwrPin);
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int begin(int channels, long sampleRate);
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void end();
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virtual int available();
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virtual int read(void* buffer, size_t size);
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void onReceive(void(*)(void));
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void setGain(int gain);
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void setBufferSize(int bufferSize);
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// private:
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void IrqHandler();
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private:
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int _dinPin;
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int _clkPin;
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int _pwrPin;
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int _channels;
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PDMDoubleBuffer _doubleBuffer;
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void (*_onReceive)(void);
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};
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extern PDMClass PDM;
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#endif
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