69 lines
2.2 KiB
C
69 lines
2.2 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) 2017 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#include "py/runtime.h"
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#include "shared-bindings/digitalio/Pull.h"
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//| class Pull:
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//| """Defines the pull of a digital input pin"""
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//|
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//| def __init__(self) -> None:
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//| """Enum-like class to define the pull value, if any, used while reading
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//| digital values in."""
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//| ...
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//|
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//| UP: Pull
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//| """When the input line isn't being driven the pull up can pull the state
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//| of the line high so it reads as true."""
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//|
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//| DOWN: Pull
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//| """When the input line isn't being driven the pull down can pull the
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//| state of the line low so it reads as false."""
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//|
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//|
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const mp_obj_type_t digitalio_pull_type;
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const digitalio_pull_obj_t digitalio_pull_up_obj = {
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{ &digitalio_pull_type },
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};
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const digitalio_pull_obj_t digitalio_pull_down_obj = {
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{ &digitalio_pull_type },
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};
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static const mp_rom_map_elem_t digitalio_pull_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_UP), MP_ROM_PTR(&digitalio_pull_up_obj) },
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{ MP_ROM_QSTR(MP_QSTR_DOWN), MP_ROM_PTR(&digitalio_pull_down_obj) },
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};
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static MP_DEFINE_CONST_DICT(digitalio_pull_locals_dict, digitalio_pull_locals_dict_table);
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static void digitalio_pull_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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qstr pull = MP_QSTR_UP;
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if (self_in == MP_ROM_PTR(&digitalio_pull_down_obj)) {
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pull = MP_QSTR_DOWN;
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}
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mp_printf(print, "%q.%q.%q", MP_QSTR_digitalio, MP_QSTR_Pull, pull);
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}
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MP_DEFINE_CONST_OBJ_TYPE(
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digitalio_pull_type,
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MP_QSTR_Pull,
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MP_TYPE_FLAG_NONE,
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print, digitalio_pull_print,
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locals_dict, &digitalio_pull_locals_dict
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);
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digitalio_pull_t validate_pull(mp_rom_obj_t obj, qstr arg_name) {
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if (obj == MP_ROM_PTR(&digitalio_pull_up_obj)) {
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return PULL_UP;
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} else if (obj == MP_ROM_PTR(&digitalio_pull_down_obj)) {
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return PULL_DOWN;
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}
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if (obj == MP_ROM_NONE) {
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return PULL_NONE;
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}
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mp_raise_TypeError_varg(MP_ERROR_TEXT("%q must be of type %q or %q, not %q"), arg_name, MP_QSTR_Pull, MP_QSTR_None, mp_obj_get_type(obj)->name);
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}
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