74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
/* Audio Library for Teensy 3.X
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* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
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*
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* Development of this audio library was funded by PJRC.COM, LLC by sales of
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* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
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* open source software by purchasing Teensy or other PJRC products.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice, development funding notice, and this permission
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* notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#if defined(__IMXRT1052__) || defined(__IMXRT1062__)
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#ifndef output_i2s2_h_
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#define output_i2s2_h_
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#include "Arduino.h"
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#include "AudioStream.h"
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#include "DMAChannel.h"
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class AudioOutputI2S2 : public AudioStream
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{
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public:
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AudioOutputI2S2(void) : AudioStream(2, inputQueueArray) { begin(); }
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virtual void update(void);
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void begin(void);
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friend class AudioInputI2S2;
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protected:
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AudioOutputI2S2(int dummy): AudioStream(2, inputQueueArray) {} // to be used only inside AudioOutputI2Sslave !!
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static void config_i2s(void);
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static audio_block_t *block_left_1st;
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static audio_block_t *block_right_1st;
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static bool update_responsibility;
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static DMAChannel dma;
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static void isr(void);
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private:
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static audio_block_t *block_left_2nd;
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static audio_block_t *block_right_2nd;
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static uint16_t block_left_offset;
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static uint16_t block_right_offset;
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audio_block_t *inputQueueArray[2];
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};
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class AudioOutputI2S2slave : public AudioOutputI2S2
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{
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public:
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AudioOutputI2S2slave(void) : AudioOutputI2S2(0) { begin(); } ;
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void begin(void);
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friend class AudioInputI2S2slave;
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friend void dma_ch0_isr(void);
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protected:
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static void config_i2s(void);
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};
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#endif
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#endif //defined(__IMXRT1062__)
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