circuitpython/shared-bindings/keypad/__init__.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2011 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 "py/obj.h"

#include "shared-bindings/keypad/__init__.h"
#include "shared-bindings/keypad/Event.h"
#include "shared-bindings/keypad/EventQueue.h"
#include "shared-bindings/keypad/KeyMatrix.h"
#include "shared-bindings/keypad/Keys.h"
#include "shared-bindings/keypad/ShiftRegisterKeys.h"
#include "shared-bindings/util.h"

STATIC void check_for_deinit(keypad_keymatrix_obj_t *self) {
    if (common_hal_keypad_deinited(self)) {
        raise_deinited_error();
    }
}

STATIC mp_obj_t keypad_generic_reset(mp_obj_t self_in) {
    keypad_keymatrix_obj_t *self = MP_OBJ_TO_PTR(self_in);
    check_for_deinit(self);

    common_hal_keypad_generic_reset(self);
    return MP_ROM_NONE;
}
MP_DEFINE_CONST_FUN_OBJ_1(keypad_generic_reset_obj, keypad_generic_reset);

STATIC mp_obj_t keypad_generic_get_key_count(mp_obj_t self_in) {
    keypad_keymatrix_obj_t *self = MP_OBJ_TO_PTR(self_in);
    check_for_deinit(self);

    return MP_OBJ_NEW_SMALL_INT(common_hal_keypad_generic_get_key_count(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(keypad_generic_get_key_count_obj, keypad_generic_get_key_count);

const mp_obj_property_t keypad_generic_key_count_obj = {
    .base.type = &mp_type_property,
    .proxy = {(mp_obj_t)&keypad_generic_get_key_count_obj,
              MP_ROM_NONE,
              MP_ROM_NONE},
};

STATIC mp_obj_t keypad_generic_get_events(mp_obj_t self_in) {
    keypad_keymatrix_obj_t *self = MP_OBJ_TO_PTR(self_in);
    check_for_deinit(self);

    return common_hal_keypad_generic_get_events(self);
}
MP_DEFINE_CONST_FUN_OBJ_1(keypad_generic_get_events_obj, keypad_generic_get_events);

const mp_obj_property_t keypad_generic_events_obj = {
    .base.type = &mp_type_property,
    .proxy = {(mp_obj_t)&keypad_generic_get_events_obj,
              MP_ROM_NONE,
              MP_ROM_NONE},
};


//| """Support for scanning keys and key matrices
//|
//| The `keypad` module provides native support to scan sets of keys or buttons,
//| connected independently to individual pins,
//| connected to a shift register,
//| or connected in a row-and-column matrix.
//|
//| For more information about working with the `keypad` module in CircuitPython,
//| see `this Learn guide <https://learn.adafruit.com/key-pad-matrix-scanning-in-circuitpython>`_.
//| """
//|

STATIC mp_rom_map_elem_t keypad_module_globals_table[] = {
    { MP_ROM_QSTR(MP_QSTR___name__),          MP_OBJ_NEW_QSTR(MP_QSTR_keypad) },
    { MP_ROM_QSTR(MP_QSTR_Event),             MP_OBJ_FROM_PTR(&keypad_event_type) },
    { MP_ROM_QSTR(MP_QSTR_EventQueue),        MP_OBJ_FROM_PTR(&keypad_eventqueue_type) },
    { MP_ROM_QSTR(MP_QSTR_KeyMatrix),         MP_OBJ_FROM_PTR(&keypad_keymatrix_type) },
    { MP_ROM_QSTR(MP_QSTR_Keys),              MP_OBJ_FROM_PTR(&keypad_keys_type) },
    { MP_ROM_QSTR(MP_QSTR_ShiftRegisterKeys), MP_OBJ_FROM_PTR(&keypad_shiftregisterkeys_type) },
};

STATIC MP_DEFINE_CONST_DICT(keypad_module_globals, keypad_module_globals_table);

const mp_obj_module_t keypad_module = {
    .base = { &mp_type_module },
    .globals = (mp_obj_dict_t *)&keypad_module_globals,
};

MP_REGISTER_MODULE(MP_QSTR_keypad, keypad_module, CIRCUITPY_KEYPAD);