1629faf8b3
This allows you to initialize usb_host.Port once successfully and then returns the same object as long as you pass the same arguments in. It does allow you to fix incorrect pins but not switching from one valid set to another. (It needs a reset for that.) This also moves hcd cache operations to RAM so that they don't access the cache when doing maintenance.
78 lines
3.1 KiB
C
78 lines
3.1 KiB
C
/*
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* This file is part of the Micro Python 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) 2022 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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#include "shared/runtime/context_manager_helpers.h"
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#include "shared-bindings/usb_host/Port.h"
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#include "shared-bindings/util.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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//| class Port:
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//| """USB host port. Also known as a root hub port."""
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//|
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//| def __init__(self, dp: microcontroller.Pin, dm: microcontroller.Pin) -> None:
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//| """Create a USB host port on the given pins. Access attached devices
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//| through the `usb` module.
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//|
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//| The resulting object lives longer than the CircuitPython VM so that
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//| USB devices such as keyboards can continue to be used. Subsequent
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//| calls to this constructor will return the same object and *not*
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//| reinitialize the USB host port. It will raise an exception when
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//| given different arguments from the first successful call.
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//|
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//| :param ~microcontroller.Pin dp: The data plus pin
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//| :param ~microcontroller.Pin dm: The data minus pin
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//| """
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//| ...
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//|
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STATIC mp_obj_t usb_host_port_make_new(const mp_obj_type_t *type,
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size_t n_args, size_t n_kw, const mp_obj_t *args) {
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// check number of arguments
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mp_arg_check_num(n_args, n_kw, 2, 2, false);
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const mcu_pin_obj_t *dp = validate_obj_is_pin(args[0], MP_QSTR_dp);
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const mcu_pin_obj_t *dm = validate_obj_is_pin(args[1], MP_QSTR_dm);
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// Pin in use checks happen in the implementation so they can be ignored
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// when returning the singleton.
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usb_host_port_obj_t *self = common_hal_usb_host_port_construct(dp, dm);
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return (mp_obj_t)self;
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}
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STATIC const mp_rom_map_elem_t usb_host_port_locals_dict_table[] = {
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};
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STATIC MP_DEFINE_CONST_DICT(usb_host_port_locals_dict, usb_host_port_locals_dict_table);
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const mp_obj_type_t usb_host_port_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Port,
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.make_new = usb_host_port_make_new,
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.locals_dict = (mp_obj_t)&usb_host_port_locals_dict,
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};
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