Jeff Epler
095fa4c284
.. across bindings & shared-bindings. This is more modern usage preferred in micropython.
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#include <stdint.h>
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#include "shared-bindings/usb_midi/PortOut.h"
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#include "shared-bindings/util.h"
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#include "py/stream.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "py/stream.h"
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//| class PortOut:
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//| """Sends midi messages to a computer over USB"""
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//|
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//| def __init__(self) -> None:
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//| """You cannot create an instance of `usb_midi.PortOut`.
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//|
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//| PortOut objects are constructed for every corresponding entry in the USB
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//| descriptor and added to the ``usb_midi.ports`` tuple."""
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//|
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// These are standard stream methods. Code is in py/stream.c.
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//
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//| def write(self, buf: ReadableBuffer) -> Optional[int]:
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//| """Write the buffer of bytes to the bus.
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//|
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//| :return: the number of bytes written
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//| :rtype: int or None"""
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//| ...
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//|
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//|
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static mp_uint_t usb_midi_portout_write(mp_obj_t self_in, const void *buf_in, mp_uint_t size, int *errcode) {
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usb_midi_portout_obj_t *self = MP_OBJ_TO_PTR(self_in);
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const byte *buf = buf_in;
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return common_hal_usb_midi_portout_write(self, buf, size, errcode);
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}
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static mp_uint_t usb_midi_portout_ioctl(mp_obj_t self_in, mp_uint_t request, mp_uint_t arg, int *errcode) {
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usb_midi_portout_obj_t *self = MP_OBJ_TO_PTR(self_in);
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mp_uint_t ret;
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if (request == MP_STREAM_POLL) {
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mp_uint_t flags = arg;
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ret = 0;
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if ((flags & MP_STREAM_POLL_WR) && common_hal_usb_midi_portout_ready_to_tx(self)) {
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ret |= MP_STREAM_POLL_WR;
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}
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} else {
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*errcode = MP_EINVAL;
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ret = MP_STREAM_ERROR;
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}
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return ret;
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}
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static const mp_rom_map_elem_t usb_midi_portout_locals_dict_table[] = {
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// Standard stream methods.
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{ MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) },
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};
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static MP_DEFINE_CONST_DICT(usb_midi_portout_locals_dict, usb_midi_portout_locals_dict_table);
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static const mp_stream_p_t usb_midi_portout_stream_p = {
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.read = NULL,
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.write = usb_midi_portout_write,
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.ioctl = usb_midi_portout_ioctl,
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.is_text = false,
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};
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MP_DEFINE_CONST_OBJ_TYPE(
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usb_midi_portout_type,
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MP_QSTR_PortOut,
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MP_TYPE_FLAG_ITER_IS_ITERNEXT,
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locals_dict, &usb_midi_portout_locals_dict,
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iter, mp_stream_unbuffered_iter,
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protocol, &usb_midi_portout_stream_p
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);
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