71 lines
2.8 KiB
C
71 lines
2.8 KiB
C
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/*
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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) 2018 hathach 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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#include "shared-bindings/usb_midi/__init__.h"
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#include "genhdr/autogen_usb_descriptor.h"
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#include "py/obj.h"
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#include "py/mphal.h"
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#include "py/runtime.h"
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#include "py/objtuple.h"
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#include "shared-bindings/usb_midi/PortIn.h"
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#include "shared-bindings/usb_midi/PortOut.h"
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#include "supervisor/memory.h"
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#include "tusb.h"
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supervisor_allocation* usb_midi_allocation;
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static inline uint16_t word_align(uint16_t size) {
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if (size % 4 != 0) {
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return (size & 0xfffc) + 0x4;
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}
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return size;
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}
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void usb_midi_init(void) {
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// TODO(tannewt): Make this dynamic.
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uint16_t tuple_size = word_align(sizeof(mp_obj_tuple_t) + sizeof(mp_obj_t*) * 2);
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uint16_t portin_size = word_align(sizeof(usb_midi_portin_obj_t));
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uint16_t portout_size = word_align(sizeof(usb_midi_portout_obj_t));
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// For each embedded MIDI Jack in the descriptor we create a Port
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usb_midi_allocation = allocate_memory(tuple_size + portin_size + portout_size, false);
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mp_obj_tuple_t *ports = (mp_obj_tuple_t *) usb_midi_allocation->ptr;
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ports->base.type = &mp_type_tuple;
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ports->len = 2;
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usb_midi_portin_obj_t* in = (usb_midi_portin_obj_t *) (usb_midi_allocation->ptr + tuple_size / 4);
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in->base.type = &usb_midi_portin_type;
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ports->items[0] = MP_OBJ_FROM_PTR(in);
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usb_midi_portout_obj_t* out = (usb_midi_portout_obj_t *) (usb_midi_allocation->ptr + tuple_size / 4 + portin_size / 4);
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out->base.type = &usb_midi_portout_type;
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ports->items[1] = MP_OBJ_FROM_PTR(out);
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mp_map_lookup(&usb_midi_module_globals.map, MP_ROM_QSTR(MP_QSTR_ports), MP_MAP_LOOKUP)->value = MP_OBJ_FROM_PTR(ports);
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}
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