360475e266
This adds I2SOut and PDMIn support via PIO. StateMachines can now: * read and read while writing * transfer in 1, 2 or 4 byte increments * init pins based on expected defaults automatically * be stopped and restarted * rxfifo can be cleared and rxstalls detected (good for tracking when the reading code isn't keeping up) Fixes #4162
48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
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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 and this permission notice shall be included in
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* 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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#ifndef MICROPY_INCLUDED_RASPBERRYPI_COMMON_HAL_AUDIOBUSIO_I2SOUT_H
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#define MICROPY_INCLUDED_RASPBERRYPI_COMMON_HAL_AUDIOBUSIO_I2SOUT_H
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#include "common-hal/microcontroller/Pin.h"
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#include "common-hal/rp2pio/StateMachine.h"
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#include "audio_dma.h"
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#include "py/obj.h"
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// We don't bit pack because we'll only have two at most. Its better to save code size instead.
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typedef struct {
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mp_obj_base_t base;
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bool left_justified;
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rp2pio_statemachine_obj_t state_machine;
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bool playing;
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audio_dma_t dma;
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} audiobusio_i2sout_obj_t;
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void i2sout_reset(void);
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#endif // MICROPY_INCLUDED_RASPBERRYPI_COMMON_HAL_AUDIOBUSIO_I2SOUT_H
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