/* * This file is part of the Micro Python project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2021 Dan Halbert for Adafruit Industries * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "shared/runtime/context_manager_helpers.h" #include "py/binary.h" #include "py/objproperty.h" #include "py/runtime.h" #include "shared-bindings/keypad/__init__.h" #include "shared-bindings/keypad/Event.h" #include "shared-bindings/keypad/Keys.h" #include "shared-bindings/microcontroller/Pin.h" #include "shared-bindings/util.h" //| class Keys: //| """Manage a set of independent keys. //| //| .. raw:: html //| //|

//|

//| Available on these boards //| //|
//|

//| //| """ //| //| def __init__( //| self, //| pins: Sequence[microcontroller.Pin], //| *, //| value_when_pressed: bool, //| pull: bool = True, //| interval: float = 0.020, //| max_events: int = 64 //| ) -> None: //| """ //| Create a `Keys` object that will scan keys attached to the given sequence of pins. //| Each key is independent and attached to its own pin. //| //| An `EventQueue` is created when this object is created and is available in the `events` attribute. //| //| :param Sequence[microcontroller.Pin] pins: The pins attached to the keys. //| The key numbers correspond to indices into this sequence. //| :param bool value_when_pressed: ``True`` if the pin reads high when the key is pressed. //| ``False`` if the pin reads low (is grounded) when the key is pressed. //| All the pins must be connected in the same way. //| :param bool pull: ``True`` if an internal pull-up or pull-down should be //| enabled on each pin. A pull-up will be used if ``value_when_pressed`` is ``False``; //| a pull-down will be used if it is ``True``. //| If an external pull is already provided for all the pins, you can set ``pull`` to ``False``. //| However, enabling an internal pull when an external one is already present is not a problem; //| it simply uses slightly more current. //| :param float interval: Scan keys no more often than ``interval`` to allow for debouncing. //| ``interval`` is in float seconds. The default is 0.020 (20 msecs). //| :param int max_events: maximum size of `events` `EventQueue`: //| maximum number of key transition events that are saved. //| Must be >= 1. //| If a new event arrives when the queue is full, the oldest event is discarded. //| """ //| ... STATIC mp_obj_t keypad_keys_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) { #if CIRCUITPY_KEYPAD_KEYS keypad_keys_obj_t *self = mp_obj_malloc(keypad_keys_obj_t, &keypad_keys_type); enum { ARG_pins, ARG_value_when_pressed, ARG_pull, ARG_interval, ARG_max_events }; static const mp_arg_t allowed_args[] = { { MP_QSTR_pins, MP_ARG_REQUIRED | MP_ARG_OBJ }, { MP_QSTR_value_when_pressed, MP_ARG_REQUIRED | MP_ARG_KW_ONLY | MP_ARG_BOOL }, { MP_QSTR_pull, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = true} }, { MP_QSTR_interval, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL } }, { MP_QSTR_max_events, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 64} }, }; mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); mp_obj_t pins = args[ARG_pins].u_obj; validate_no_duplicate_pins(pins, MP_QSTR_row_pins); // mp_obj_len() will be >= 0. const size_t num_pins = (size_t)MP_OBJ_SMALL_INT_VALUE(mp_obj_len(pins)); const bool value_when_pressed = args[ARG_value_when_pressed].u_bool; const mp_float_t interval = mp_arg_validate_obj_float_non_negative(args[ARG_interval].u_obj, 0.020f, MP_QSTR_interval); const size_t max_events = (size_t)mp_arg_validate_int_min(args[ARG_max_events].u_int, 1, MP_QSTR_max_events); const mcu_pin_obj_t *pins_array[num_pins]; for (mp_uint_t i = 0; i < num_pins; i++) { pins_array[i] = validate_obj_is_free_pin(mp_obj_subscr(pins, MP_OBJ_NEW_SMALL_INT(i), MP_OBJ_SENTINEL), MP_QSTR_pin); } common_hal_keypad_keys_construct(self, num_pins, pins_array, value_when_pressed, args[ARG_pull].u_bool, interval, max_events); return MP_OBJ_FROM_PTR(self); #else mp_raise_NotImplementedError_varg(MP_ERROR_TEXT("%q"), MP_QSTR_Keys); #endif } #if CIRCUITPY_KEYPAD_KEYS //| def deinit(self) -> None: //| """Stop scanning and release the pins.""" //| ... STATIC mp_obj_t keypad_keys_deinit(mp_obj_t self_in) { keypad_keys_obj_t *self = MP_OBJ_TO_PTR(self_in); common_hal_keypad_keys_deinit(self); return MP_ROM_NONE; } MP_DEFINE_CONST_FUN_OBJ_1(keypad_keys_deinit_obj, keypad_keys_deinit); //| def __enter__(self) -> Keys: //| """No-op used by Context Managers.""" //| ... // Provided by context manager helper. //| def __exit__(self) -> None: //| """Automatically deinitializes when exiting a context. See //| :ref:`lifetime-and-contextmanagers` for more info.""" //| ... STATIC mp_obj_t keypad_keys___exit__(size_t n_args, const mp_obj_t *args) { (void)n_args; common_hal_keypad_keys_deinit(args[0]); return MP_ROM_NONE; } STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(keypad_keys___exit___obj, 4, 4, keypad_keys___exit__); //| def reset(self) -> None: //| """Reset the internal state of the scanner to assume that all keys are now released. //| Any key that is already pressed at the time of this call will therefore immediately cause //| a new key-pressed event to occur. //| """ //| ... //| key_count: int //| """The number of keys that are being scanned. (read-only) //| """ //| events: EventQueue //| """The `EventQueue` associated with this `Keys` object. (read-only) //| """ //| STATIC const mp_rom_map_elem_t keypad_keys_locals_dict_table[] = { { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&keypad_keys_deinit_obj) }, { MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) }, { MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&keypad_keys___exit___obj) }, { MP_ROM_QSTR(MP_QSTR_events), MP_ROM_PTR(&keypad_generic_events_obj) }, { MP_ROM_QSTR(MP_QSTR_key_count), MP_ROM_PTR(&keypad_generic_key_count_obj) }, { MP_ROM_QSTR(MP_QSTR_reset), MP_ROM_PTR(&keypad_generic_reset_obj) }, }; STATIC MP_DEFINE_CONST_DICT(keypad_keys_locals_dict, keypad_keys_locals_dict_table); #endif MP_DEFINE_CONST_OBJ_TYPE( keypad_keys_type, MP_QSTR_Keys, MP_TYPE_FLAG_HAS_SPECIAL_ACCESSORS, make_new, keypad_keys_make_new #if CIRCUITPY_KEYPAD_KEYS , locals_dict, &keypad_keys_locals_dict #endif );