235 lines
9.7 KiB
C
235 lines
9.7 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) 2018 Michael Schroeder
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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 <stdint.h>
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#include "shared/runtime/context_manager_helpers.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "py/runtime0.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/frequencyio/FrequencyIn.h"
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#include "shared-bindings/util.h"
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#include "supervisor/shared/translate.h"
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//| class FrequencyIn:
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//| """Read a frequency signal
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//|
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//| FrequencyIn is used to measure the frequency, in hertz, of a digital signal
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//| on an incoming pin. Accuracy has shown to be within 10%, if not better. It
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//| is recommended to utilize an average of multiple samples to smooth out readings.
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//|
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//| Frequencies below 1KHz are not currently detectable.
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//|
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//| FrequencyIn will not determine pulse width (use ``PulseIn``)."""
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//|
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//| def __init__(self, pin: microcontroller.Pin, capture_period: int = 10) -> None:
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//| """Create a FrequencyIn object associated with the given pin.
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//|
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//| :param ~microcontroller.Pin pin: Pin to read frequency from.
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//| :param int capture_period: Keyword argument to set the measurement period, in
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//| milliseconds. Default is 10ms; range is 1ms - 500ms.
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//|
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//| Read the incoming frequency from a pin::
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//|
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//| import frequencyio
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//| import board
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//|
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//| frequency = frequencyio.FrequencyIn(board.D11)
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//|
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//| # Loop while printing the detected frequency
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//| while True:
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//| print(frequency.value)
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//|
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//| # Optional clear() will reset the value
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//| # to zero. Without this, if the incoming
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//| # signal stops, the last reading will remain
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//| # as the value.
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//| frequency.clear()"""
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//| ...
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//|
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STATIC mp_obj_t frequencyio_frequencyin_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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mp_arg_check_num(n_args, n_kw, 1, 1, true);
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frequencyio_frequencyin_obj_t *self = m_new_obj(frequencyio_frequencyin_obj_t);
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self->base.type = &frequencyio_frequencyin_type;
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enum { ARG_pin, ARG_capture_period };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_pin, MP_ARG_REQUIRED | MP_ARG_OBJ },
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{ MP_QSTR_capture_period, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 10} },
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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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const mcu_pin_obj_t *pin = validate_obj_is_free_pin(args[ARG_pin].u_obj);
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const uint16_t capture_period = args[ARG_capture_period].u_int;
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common_hal_frequencyio_frequencyin_construct(self, pin, capture_period);
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return MP_OBJ_FROM_PTR(self);
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}
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//| def deinit(self) -> None:
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//| """Deinitialises the FrequencyIn and releases any hardware resources for reuse."""
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//| ...
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//|
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STATIC mp_obj_t frequencyio_frequencyin_deinit(mp_obj_t self_in) {
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frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
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common_hal_frequencyio_frequencyin_deinit(self);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_deinit_obj, frequencyio_frequencyin_deinit);
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STATIC void check_for_deinit(frequencyio_frequencyin_obj_t *self) {
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if (common_hal_frequencyio_frequencyin_deinited(self)) {
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raise_deinited_error();
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}
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}
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//| def __enter__(self) -> FrequencyIn:
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//| """No-op used by Context Managers."""
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//| ...
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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 the hardware when exiting a context. See
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//| :ref:`lifetime-and-contextmanagers` for more info."""
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//| ...
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//|
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STATIC mp_obj_t frequencyio_frequencyin_obj___exit__(size_t n_args, const mp_obj_t *args) {
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(void)n_args;
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common_hal_frequencyio_frequencyin_deinit(args[0]);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(frequencyio_frequencyin___exit___obj, 4, 4, frequencyio_frequencyin_obj___exit__);
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//| def pause(self) -> None:
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//| """Pause frequency capture."""
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//| ...
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//|
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STATIC mp_obj_t frequencyio_frequencyin_obj_pause(mp_obj_t self_in) {
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frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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common_hal_frequencyio_frequencyin_pause(self);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_pause_obj, frequencyio_frequencyin_obj_pause);
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//| def resume(self) -> None:
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//| """Resumes frequency capture."""
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//| ...
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//|
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STATIC mp_obj_t frequencyio_frequencyin_obj_resume(mp_obj_t self_in) {
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frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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common_hal_frequencyio_frequencyin_resume(self);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_resume_obj, frequencyio_frequencyin_obj_resume);
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//| def clear(self) -> None:
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//| """Clears the last detected frequency capture value."""
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//| ...
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//|
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STATIC mp_obj_t frequencyio_frequencyin_obj_clear(mp_obj_t self_in) {
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frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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common_hal_frequencyio_frequencyin_clear(self);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_clear_obj, frequencyio_frequencyin_obj_clear);
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//| capture_period: int
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//| """The capture measurement period. Lower incoming frequencies will be measured
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//| more accurately with longer capture periods. Higher frequencies are more
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//| accurate with shorter capture periods.
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//|
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//| .. note:: When setting a new ``capture_period``, all previous capture information is
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//| cleared with a call to ``clear()``."""
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//|
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STATIC mp_obj_t frequencyio_frequencyin_obj_get_capture_period(mp_obj_t self_in) {
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frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_frequencyio_frequencyin_get_capture_period(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequency_get_capture_period_obj, frequencyio_frequencyin_obj_get_capture_period);
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STATIC mp_obj_t frequencyio_frequencyin_obj_set_capture_period(mp_obj_t self_in, mp_obj_t capture_period) {
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frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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common_hal_frequencyio_frequencyin_set_capture_period(self, mp_obj_get_int(capture_period));
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(frequencyio_frequency_set_capture_period_obj, frequencyio_frequencyin_obj_set_capture_period);
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MP_PROPERTY_GETSET(frequencyio_frequencyin_capture_period_obj,
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(mp_obj_t)&frequencyio_frequency_get_capture_period_obj,
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(mp_obj_t)&frequencyio_frequency_set_capture_period_obj);
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//| def __get__(self, index: int) -> int:
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//| """Returns the value of the last frequency captured."""
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//| ...
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//|
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STATIC mp_obj_t frequencyio_frequencyin_obj_get_value(mp_obj_t self_in) {
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frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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// return MP_OBJ_NEW_SMALL_INT(common_hal_frequencyio_frequencyin_get_item(self));
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return mp_obj_new_int_from_float(common_hal_frequencyio_frequencyin_get_item(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_get_value_obj, frequencyio_frequencyin_obj_get_value);
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MP_PROPERTY_GETTER(frequencyio_frequencyin_value_obj,
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(mp_obj_t)&frequencyio_frequencyin_get_value_obj);
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STATIC const mp_rom_map_elem_t frequencyio_frequencyin_locals_dict_table[] = {
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// Methods
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{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&frequencyio_frequencyin_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(&frequencyio_frequencyin___exit___obj) },
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{ MP_ROM_QSTR(MP_QSTR_value), MP_ROM_PTR(&frequencyio_frequencyin_value_obj) },
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{ MP_ROM_QSTR(MP_QSTR_pause), MP_ROM_PTR(&frequencyio_frequencyin_pause_obj) },
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{ MP_ROM_QSTR(MP_QSTR_resume), MP_ROM_PTR(&frequencyio_frequencyin_resume_obj) },
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{ MP_ROM_QSTR(MP_QSTR_clear), MP_ROM_PTR(&frequencyio_frequencyin_clear_obj) },
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{ MP_ROM_QSTR(MP_QSTR_capture_period), MP_ROM_PTR(&frequencyio_frequencyin_capture_period_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(frequencyio_frequencyin_locals_dict, frequencyio_frequencyin_locals_dict_table);
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const mp_obj_type_t frequencyio_frequencyin_type = {
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{ &mp_type_type },
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.name = MP_QSTR_frequencyin,
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.make_new = frequencyio_frequencyin_make_new,
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.locals_dict = (mp_obj_dict_t *)&frequencyio_frequencyin_locals_dict,
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};
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