246 lines
11 KiB
C
246 lines
11 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) 2021 Dan Halbert 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 "py/binary.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "shared-bindings/keypad/__init__.h"
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#include "shared-bindings/keypad/Event.h"
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#include "shared-bindings/keypad/KeyMatrix.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/util.h"
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//| class KeyMatrix:
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//| """Manage a 2D matrix of keys with row and column pins."""
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//|
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//| def __init__(
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//| self,
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//| row_pins: Sequence[microcontroller.Pin],
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//| column_pins: Sequence[microcontroller.Pin],
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//| columns_to_anodes: bool = True,
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//| interval: float = 0.020,
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//| max_events: int = 64,
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//| ) -> None:
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//| """
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//| Create a `Keys` object that will scan the key matrix attached to the given row and column pins.
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//| There should not be any external pull-ups or pull-downs on the matrix:
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//| ``KeyMatrix`` enables internal pull-ups or pull-downs on the pins as necessary.
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//|
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//| The keys are numbered sequentially from zero. A key number can be computed
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//| by ``row * len(column_pins) + column``.
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//|
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//| An `EventQueue` is created when this object is created and is available in the `events` attribute.
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//|
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//| :param Sequence[microcontroller.Pin] row_pins: The pins attached to the rows.
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//| :param Sequence[microcontroller.Pin] column_pins: The pins attached to the columns.
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//| :param bool columns_to_anodes: Default ``True``.
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//| If the matrix uses diodes, the diode anodes are typically connected to the column pins,
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//| and the cathodes should be connected to the row pins. If your diodes are reversed,
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//| set ``columns_to_anodes`` to ``False``.
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//| :param float interval: Scan keys no more often than ``interval`` to allow for debouncing.
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//| ``interval`` is in float seconds. The default is 0.020 (20 msecs).
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//| :param int max_events: maximum size of `events` `EventQueue`:
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//| maximum number of key transition events that are saved.
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//| Must be >= 1.
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//| If a new event arrives when the queue is full, the oldest event is discarded.
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//| """
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//| ...
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STATIC mp_obj_t keypad_keymatrix_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
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#if CIRCUITPY_KEYPAD_KEYMATRIX
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keypad_keymatrix_obj_t *self = mp_obj_malloc(keypad_keymatrix_obj_t, &keypad_keymatrix_type);
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enum { ARG_row_pins, ARG_column_pins, ARG_columns_to_anodes, ARG_interval, ARG_max_events };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_row_pins, MP_ARG_REQUIRED | MP_ARG_OBJ },
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{ MP_QSTR_column_pins, MP_ARG_REQUIRED | MP_ARG_OBJ },
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{ MP_QSTR_columns_to_anodes, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = true} },
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{ MP_QSTR_interval, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
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{ MP_QSTR_max_events, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 64} },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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mp_obj_t row_pins = args[ARG_row_pins].u_obj;
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// mp_obj_len() will be >= 0.
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const size_t num_row_pins = (size_t)MP_OBJ_SMALL_INT_VALUE(mp_obj_len(row_pins));
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mp_obj_t column_pins = args[ARG_column_pins].u_obj;
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const size_t num_column_pins = (size_t)MP_OBJ_SMALL_INT_VALUE(mp_obj_len(column_pins));
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const mp_float_t interval =
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mp_arg_validate_obj_float_non_negative(args[ARG_interval].u_obj, 0.020f, MP_QSTR_interval);
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const size_t max_events = (size_t)mp_arg_validate_int_min(args[ARG_max_events].u_int, 1, MP_QSTR_max_events);
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const mcu_pin_obj_t *row_pins_array[num_row_pins];
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const mcu_pin_obj_t *column_pins_array[num_column_pins];
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validate_no_duplicate_pins_2(row_pins, column_pins, MP_QSTR_row_pins, MP_QSTR_column_pins);
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for (size_t row = 0; row < num_row_pins; row++) {
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const mcu_pin_obj_t *pin =
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validate_obj_is_free_pin(mp_obj_subscr(row_pins, MP_OBJ_NEW_SMALL_INT(row), MP_OBJ_SENTINEL), MP_QSTR_pin);
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row_pins_array[row] = pin;
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}
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for (size_t column = 0; column < num_column_pins; column++) {
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const mcu_pin_obj_t *pin =
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validate_obj_is_free_pin(mp_obj_subscr(column_pins, MP_OBJ_NEW_SMALL_INT(column), MP_OBJ_SENTINEL), MP_QSTR_pin);
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column_pins_array[column] = pin;
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}
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common_hal_keypad_keymatrix_construct(self, num_row_pins, row_pins_array, num_column_pins, column_pins_array, args[ARG_columns_to_anodes].u_bool, interval, max_events);
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return MP_OBJ_FROM_PTR(self);
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#else
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mp_raise_NotImplementedError_varg(translate("%q"), MP_QSTR_KeyMatrix);
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#endif
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}
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#if CIRCUITPY_KEYPAD_KEYMATRIX
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//| def deinit(self) -> None:
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//| """Stop scanning and release the pins."""
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//| ...
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STATIC mp_obj_t keypad_keymatrix_deinit(mp_obj_t self_in) {
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keypad_keymatrix_obj_t *self = MP_OBJ_TO_PTR(self_in);
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common_hal_keypad_keymatrix_deinit(self);
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return MP_ROM_NONE;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(keypad_keymatrix_deinit_obj, keypad_keymatrix_deinit);
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//| def __enter__(self) -> KeyMatrix:
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//| """No-op used by Context Managers."""
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//| ...
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// Provided by context manager helper.
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//| def __exit__(self) -> None:
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//| """Automatically deinitializes when exiting a context. See
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//| :ref:`lifetime-and-contextmanagers` for more info."""
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//| ...
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STATIC mp_obj_t keypad_keymatrix___exit__(size_t n_args, const mp_obj_t *args) {
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(void)n_args;
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common_hal_keypad_keymatrix_deinit(args[0]);
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return MP_ROM_NONE;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(keypad_keymatrix___exit___obj, 4, 4, keypad_keymatrix___exit__);
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STATIC void check_for_deinit(keypad_keymatrix_obj_t *self) {
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if (common_hal_keypad_deinited(self)) {
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raise_deinited_error();
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}
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}
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//| def reset(self) -> None:
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//| """Reset the internal state of the scanner to assume that all keys are now released.
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//| Any key that is already pressed at the time of this call will therefore immediately cause
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//| a new key-pressed event to occur.
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//| """
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//| ...
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//| key_count: int
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//| """The number of keys that are being scanned. (read-only)
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//| """
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//| def key_number_to_row_column(self, key_number: int) -> Tuple[int]:
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//| """Return the row and column for the given key number.
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//| The row is ``key_number // len(column_pins)``.
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//| The column is ``key_number % len(column_pins)``.
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//|
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//| :return: ``(row, column)``
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//| :rtype: Tuple[int]
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//| """
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//| ...
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STATIC mp_obj_t keypad_keymatrix_key_number_to_row_column(mp_obj_t self_in, mp_obj_t key_number_in) {
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keypad_keymatrix_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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const mp_uint_t key_number = (mp_uint_t)mp_arg_validate_int_range(
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mp_obj_get_int(key_number_in),
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0, (mp_int_t)common_hal_keypad_generic_get_key_count(self),
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MP_QSTR_key_number);
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mp_uint_t row;
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mp_uint_t column;
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common_hal_keypad_keymatrix_key_number_to_row_column(self, key_number, &row, &column);
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mp_obj_t row_column[2];
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row_column[0] = MP_OBJ_NEW_SMALL_INT(row);
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row_column[1] = MP_OBJ_NEW_SMALL_INT(column);
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return mp_obj_new_tuple(2, row_column);
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}
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MP_DEFINE_CONST_FUN_OBJ_2(keypad_keymatrix_key_number_to_row_column_obj, keypad_keymatrix_key_number_to_row_column);
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//| def row_column_to_key_number(self, row: int, column: int) -> int:
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//| """Return the key number for a given row and column.
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//| The key number is ``row * len(column_pins) + column``.
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//| """
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//| ...
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STATIC mp_obj_t keypad_keymatrix_row_column_to_key_number(mp_obj_t self_in, mp_obj_t row_in, mp_obj_t column_in) {
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keypad_keymatrix_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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const mp_uint_t row = (mp_uint_t)mp_arg_validate_int_range(
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mp_obj_get_int(row_in), 0, (mp_int_t)common_hal_keypad_keymatrix_get_row_count(self), MP_QSTR_row);
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const mp_int_t column = (mp_uint_t)mp_arg_validate_int_range(
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mp_obj_get_int(column_in), 0, (mp_int_t)common_hal_keypad_keymatrix_get_column_count(self), MP_QSTR_column);
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return MP_OBJ_NEW_SMALL_INT(
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(mp_int_t)common_hal_keypad_keymatrix_row_column_to_key_number(self, row, column));
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}
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MP_DEFINE_CONST_FUN_OBJ_3(keypad_keymatrix_row_column_to_key_number_obj, keypad_keymatrix_row_column_to_key_number);
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//| events: EventQueue
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//| """The `EventQueue` associated with this `Keys` object. (read-only)
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//| """
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//|
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STATIC const mp_rom_map_elem_t keypad_keymatrix_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&keypad_keymatrix_deinit_obj) },
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{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) },
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{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&keypad_keymatrix___exit___obj) },
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{ MP_ROM_QSTR(MP_QSTR_events), MP_ROM_PTR(&keypad_generic_events_obj) },
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{ MP_ROM_QSTR(MP_QSTR_key_count), MP_ROM_PTR(&keypad_generic_key_count_obj) },
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{ MP_ROM_QSTR(MP_QSTR_reset), MP_ROM_PTR(&keypad_generic_reset_obj) },
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{ MP_ROM_QSTR(MP_QSTR_key_number_to_row_column), MP_ROM_PTR(&keypad_keymatrix_key_number_to_row_column_obj) },
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{ MP_ROM_QSTR(MP_QSTR_row_column_to_key_number), MP_ROM_PTR(&keypad_keymatrix_row_column_to_key_number_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(keypad_keymatrix_locals_dict, keypad_keymatrix_locals_dict_table);
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#endif
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const mp_obj_type_t keypad_keymatrix_type = {
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{ &mp_type_type },
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.name = MP_QSTR_KeyMatrix,
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.make_new = keypad_keymatrix_make_new,
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#if CIRCUITPY_KEYPAD_KEYMATRIX
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.locals_dict = (mp_obj_t)&keypad_keymatrix_locals_dict,
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#endif
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};
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