circuitpython/shared-bindings/touchio/TouchIn.c

191 lines
7.1 KiB
C

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* SPDX-FileCopyrightText: Copyright (c) 2013, 2014 Damien P. George
*
* 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 <stdint.h>
#include <string.h>
#include "shared/runtime/context_manager_helpers.h"
#include "py/binary.h"
#include "py/mphal.h"
#include "py/nlr.h"
#include "py/objproperty.h"
#include "py/runtime.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "shared-bindings/touchio/TouchIn.h"
#include "shared-bindings/util.h"
//| class TouchIn:
//| """Read the state of a capacitive touch sensor
//|
//| Usage::
//|
//| import touchio
//| from board import *
//|
//| touch = touchio.TouchIn(A1)
//| while True:
//| if touch.value:
//| print("touched!")"""
//|
//| def __init__(self, pin: microcontroller.Pin) -> None:
//| """Use the TouchIn on the given pin.
//|
//| :param ~microcontroller.Pin pin: the pin to read from"""
//| ...
STATIC mp_obj_t touchio_touchin_make_new(const mp_obj_type_t *type,
size_t n_args, size_t n_kw, const mp_obj_t *args) {
// check number of arguments
mp_arg_check_num(n_args, n_kw, 1, 1, false);
// 1st argument is the pin
const mcu_pin_obj_t *pin = validate_obj_is_free_pin(args[0], MP_QSTR_pin);
touchio_touchin_obj_t *self = mp_obj_malloc(touchio_touchin_obj_t, &touchio_touchin_type);
common_hal_touchio_touchin_construct(self, pin);
return (mp_obj_t)self;
}
//| def deinit(self) -> None:
//| """Deinitialises the TouchIn and releases any hardware resources for reuse."""
//| ...
STATIC mp_obj_t touchio_touchin_deinit(mp_obj_t self_in) {
touchio_touchin_obj_t *self = MP_OBJ_TO_PTR(self_in);
common_hal_touchio_touchin_deinit(self);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(touchio_touchin_deinit_obj, touchio_touchin_deinit);
STATIC void check_for_deinit(touchio_touchin_obj_t *self) {
if (common_hal_touchio_touchin_deinited(self)) {
raise_deinited_error();
}
}
//| def __enter__(self) -> TouchIn:
//| """No-op used by Context Managers."""
//| ...
// Provided by context manager helper.
//| def __exit__(self) -> None:
//| """Automatically deinitializes the hardware when exiting a context. See
//| :ref:`lifetime-and-contextmanagers` for more info."""
//| ...
STATIC mp_obj_t touchio_touchin_obj___exit__(size_t n_args, const mp_obj_t *args) {
(void)n_args;
common_hal_touchio_touchin_deinit(args[0]);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(touchio_touchin___exit___obj, 4, 4, touchio_touchin_obj___exit__);
//| value: bool
//| """Whether the touch pad is being touched or not. (read-only)
//|
//| True when `raw_value` > `threshold`."""
STATIC mp_obj_t touchio_touchin_obj_get_value(mp_obj_t self_in) {
touchio_touchin_obj_t *self = MP_OBJ_TO_PTR(self_in);
check_for_deinit(self);
return mp_obj_new_bool(common_hal_touchio_touchin_get_value(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(touchio_touchin_get_value_obj, touchio_touchin_obj_get_value);
MP_PROPERTY_GETTER(touchio_touchin_value_obj,
(mp_obj_t)&touchio_touchin_get_value_obj);
//| raw_value: int
//| """The raw touch measurement as an `int`. (read-only)"""
STATIC mp_obj_t touchio_touchin_obj_get_raw_value(mp_obj_t self_in) {
touchio_touchin_obj_t *self = MP_OBJ_TO_PTR(self_in);
check_for_deinit(self);
return MP_OBJ_NEW_SMALL_INT(common_hal_touchio_touchin_get_raw_value(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(touchio_touchin_get_raw_value_obj, touchio_touchin_obj_get_raw_value);
MP_PROPERTY_GETTER(touchio_touchin_raw_value_obj,
(mp_obj_t)&touchio_touchin_get_raw_value_obj);
//| threshold: Optional[int]
//| """Minimum `raw_value` needed to detect a touch (and for `value` to be `True`).
//|
//| When the **TouchIn** object is created, an initial `raw_value` is read from the pin,
//| and then `threshold` is set to be 100 + that value.
//|
//| You can adjust `threshold` to make the pin more or less sensitive::
//|
//| import board
//| import touchio
//|
//| touch = touchio.TouchIn(board.A1)
//| touch.threshold = 7300"""
//|
STATIC mp_obj_t touchio_touchin_obj_get_threshold(mp_obj_t self_in) {
touchio_touchin_obj_t *self = MP_OBJ_TO_PTR(self_in);
check_for_deinit(self);
return MP_OBJ_NEW_SMALL_INT(common_hal_touchio_touchin_get_threshold(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(touchio_touchin_get_threshold_obj, touchio_touchin_obj_get_threshold);
STATIC mp_obj_t touchio_touchin_obj_set_threshold(mp_obj_t self_in, mp_obj_t threshold_obj) {
touchio_touchin_obj_t *self = MP_OBJ_TO_PTR(self_in);
check_for_deinit(self);
uint32_t new_threshold = mp_obj_get_int(threshold_obj);
mp_arg_validate_int_range(new_threshold, 0, UINT16_MAX, MP_QSTR_threshold);
common_hal_touchio_touchin_set_threshold(self, new_threshold);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(touchio_touchin_set_threshold_obj, touchio_touchin_obj_set_threshold);
MP_PROPERTY_GETSET(touchio_touchin_threshold_obj,
(mp_obj_t)&touchio_touchin_get_threshold_obj,
(mp_obj_t)&touchio_touchin_set_threshold_obj);
STATIC const mp_rom_map_elem_t touchio_touchin_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) },
{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&touchio_touchin___exit___obj) },
{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&touchio_touchin_deinit_obj) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_value), MP_ROM_PTR(&touchio_touchin_value_obj)},
{ MP_OBJ_NEW_QSTR(MP_QSTR_raw_value), MP_ROM_PTR(&touchio_touchin_raw_value_obj)},
{ MP_OBJ_NEW_QSTR(MP_QSTR_threshold), MP_ROM_PTR(&touchio_touchin_threshold_obj)},
};
STATIC MP_DEFINE_CONST_DICT(touchio_touchin_locals_dict, touchio_touchin_locals_dict_table);
MP_DEFINE_CONST_OBJ_TYPE(
touchio_touchin_type,
MP_QSTR_TouchIn,
MP_TYPE_FLAG_HAS_SPECIAL_ACCESSORS,
make_new, touchio_touchin_make_new,
locals_dict, &touchio_touchin_locals_dict
);