227 lines
9.6 KiB
C
227 lines
9.6 KiB
C
/*
|
|
* This file is part of the Micro Python project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2018 Michael Schroeder
|
|
*
|
|
* 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 "shared/runtime/context_manager_helpers.h"
|
|
#include "py/objproperty.h"
|
|
#include "py/runtime.h"
|
|
#include "py/runtime0.h"
|
|
#include "shared-bindings/microcontroller/Pin.h"
|
|
#include "shared-bindings/frequencyio/FrequencyIn.h"
|
|
#include "shared-bindings/util.h"
|
|
|
|
//| class FrequencyIn:
|
|
//| """Read a frequency signal
|
|
//|
|
|
//| FrequencyIn is used to measure the frequency, in hertz, of a digital signal
|
|
//| on an incoming pin. Accuracy has shown to be within 10%, if not better. It
|
|
//| is recommended to utilize an average of multiple samples to smooth out readings.
|
|
//|
|
|
//| Frequencies below 1KHz are not currently detectable.
|
|
//|
|
|
//| FrequencyIn will not determine pulse width (use ``PulseIn``)."""
|
|
//|
|
|
//| def __init__(self, pin: microcontroller.Pin, capture_period: int = 10) -> None:
|
|
//| """Create a FrequencyIn object associated with the given pin.
|
|
//|
|
|
//| :param ~microcontroller.Pin pin: Pin to read frequency from.
|
|
//| :param int capture_period: Keyword argument to set the measurement period, in
|
|
//| milliseconds. Default is 10ms; range is 1ms - 500ms.
|
|
//|
|
|
//| Read the incoming frequency from a pin::
|
|
//|
|
|
//| import frequencyio
|
|
//| import board
|
|
//|
|
|
//| frequency = frequencyio.FrequencyIn(board.D11)
|
|
//|
|
|
//| # Loop while printing the detected frequency
|
|
//| while True:
|
|
//| print(frequency.value)
|
|
//|
|
|
//| # Optional clear() will reset the value
|
|
//| # to zero. Without this, if the incoming
|
|
//| # signal stops, the last reading will remain
|
|
//| # as the value.
|
|
//| frequency.clear()"""
|
|
//| ...
|
|
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) {
|
|
mp_arg_check_num(n_args, n_kw, 1, 1, true);
|
|
|
|
frequencyio_frequencyin_obj_t *self =
|
|
mp_obj_malloc(frequencyio_frequencyin_obj_t, &frequencyio_frequencyin_type);
|
|
enum { ARG_pin, ARG_capture_period };
|
|
static const mp_arg_t allowed_args[] = {
|
|
{ MP_QSTR_pin, MP_ARG_REQUIRED | MP_ARG_OBJ },
|
|
{ MP_QSTR_capture_period, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 10} },
|
|
};
|
|
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);
|
|
|
|
const mcu_pin_obj_t *pin = validate_obj_is_free_pin(args[ARG_pin].u_obj, MP_QSTR_pin);
|
|
|
|
const uint16_t capture_period = args[ARG_capture_period].u_int;
|
|
|
|
common_hal_frequencyio_frequencyin_construct(self, pin, capture_period);
|
|
|
|
return MP_OBJ_FROM_PTR(self);
|
|
}
|
|
|
|
//| def deinit(self) -> None:
|
|
//| """Deinitialises the FrequencyIn and releases any hardware resources for reuse."""
|
|
//| ...
|
|
STATIC mp_obj_t frequencyio_frequencyin_deinit(mp_obj_t self_in) {
|
|
frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
|
common_hal_frequencyio_frequencyin_deinit(self);
|
|
return mp_const_none;
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_deinit_obj, frequencyio_frequencyin_deinit);
|
|
|
|
STATIC void check_for_deinit(frequencyio_frequencyin_obj_t *self) {
|
|
if (common_hal_frequencyio_frequencyin_deinited(self)) {
|
|
raise_deinited_error();
|
|
}
|
|
}
|
|
|
|
//| def __enter__(self) -> FrequencyIn:
|
|
//| """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 frequencyio_frequencyin_obj___exit__(size_t n_args, const mp_obj_t *args) {
|
|
(void)n_args;
|
|
common_hal_frequencyio_frequencyin_deinit(args[0]);
|
|
return mp_const_none;
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(frequencyio_frequencyin___exit___obj, 4, 4, frequencyio_frequencyin_obj___exit__);
|
|
|
|
//| def pause(self) -> None:
|
|
//| """Pause frequency capture."""
|
|
//| ...
|
|
STATIC mp_obj_t frequencyio_frequencyin_obj_pause(mp_obj_t self_in) {
|
|
frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
|
check_for_deinit(self);
|
|
|
|
common_hal_frequencyio_frequencyin_pause(self);
|
|
return mp_const_none;
|
|
}
|
|
MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_pause_obj, frequencyio_frequencyin_obj_pause);
|
|
|
|
//| def resume(self) -> None:
|
|
//| """Resumes frequency capture."""
|
|
//| ...
|
|
STATIC mp_obj_t frequencyio_frequencyin_obj_resume(mp_obj_t self_in) {
|
|
frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
|
check_for_deinit(self);
|
|
|
|
common_hal_frequencyio_frequencyin_resume(self);
|
|
return mp_const_none;
|
|
}
|
|
MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_resume_obj, frequencyio_frequencyin_obj_resume);
|
|
|
|
//| def clear(self) -> None:
|
|
//| """Clears the last detected frequency capture value."""
|
|
//| ...
|
|
|
|
STATIC mp_obj_t frequencyio_frequencyin_obj_clear(mp_obj_t self_in) {
|
|
frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
|
check_for_deinit(self);
|
|
|
|
common_hal_frequencyio_frequencyin_clear(self);
|
|
return mp_const_none;
|
|
}
|
|
MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_clear_obj, frequencyio_frequencyin_obj_clear);
|
|
|
|
//| capture_period: int
|
|
//| """The capture measurement period. Lower incoming frequencies will be measured
|
|
//| more accurately with longer capture periods. Higher frequencies are more
|
|
//| accurate with shorter capture periods.
|
|
//|
|
|
//| .. note:: When setting a new ``capture_period``, all previous capture information is
|
|
//| cleared with a call to ``clear()``."""
|
|
STATIC mp_obj_t frequencyio_frequencyin_obj_get_capture_period(mp_obj_t self_in) {
|
|
frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
|
check_for_deinit(self);
|
|
|
|
return MP_OBJ_NEW_SMALL_INT(common_hal_frequencyio_frequencyin_get_capture_period(self));
|
|
}
|
|
MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequency_get_capture_period_obj, frequencyio_frequencyin_obj_get_capture_period);
|
|
|
|
STATIC mp_obj_t frequencyio_frequencyin_obj_set_capture_period(mp_obj_t self_in, mp_obj_t capture_period) {
|
|
frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
|
check_for_deinit(self);
|
|
|
|
common_hal_frequencyio_frequencyin_set_capture_period(self, mp_obj_get_int(capture_period));
|
|
return mp_const_none;
|
|
}
|
|
MP_DEFINE_CONST_FUN_OBJ_2(frequencyio_frequency_set_capture_period_obj, frequencyio_frequencyin_obj_set_capture_period);
|
|
|
|
MP_PROPERTY_GETSET(frequencyio_frequencyin_capture_period_obj,
|
|
(mp_obj_t)&frequencyio_frequency_get_capture_period_obj,
|
|
(mp_obj_t)&frequencyio_frequency_set_capture_period_obj);
|
|
|
|
//| def __get__(self, index: int) -> int:
|
|
//| """Returns the value of the last frequency captured."""
|
|
//| ...
|
|
//|
|
|
STATIC mp_obj_t frequencyio_frequencyin_obj_get_value(mp_obj_t self_in) {
|
|
frequencyio_frequencyin_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
|
check_for_deinit(self);
|
|
|
|
// return MP_OBJ_NEW_SMALL_INT(common_hal_frequencyio_frequencyin_get_item(self));
|
|
return mp_obj_new_int_from_float(common_hal_frequencyio_frequencyin_get_item(self));
|
|
}
|
|
MP_DEFINE_CONST_FUN_OBJ_1(frequencyio_frequencyin_get_value_obj, frequencyio_frequencyin_obj_get_value);
|
|
|
|
MP_PROPERTY_GETTER(frequencyio_frequencyin_value_obj,
|
|
(mp_obj_t)&frequencyio_frequencyin_get_value_obj);
|
|
|
|
STATIC const mp_rom_map_elem_t frequencyio_frequencyin_locals_dict_table[] = {
|
|
// Methods
|
|
{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&frequencyio_frequencyin_deinit_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&frequencyio_frequencyin___exit___obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_value), MP_ROM_PTR(&frequencyio_frequencyin_value_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_pause), MP_ROM_PTR(&frequencyio_frequencyin_pause_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_resume), MP_ROM_PTR(&frequencyio_frequencyin_resume_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_clear), MP_ROM_PTR(&frequencyio_frequencyin_clear_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_capture_period), MP_ROM_PTR(&frequencyio_frequencyin_capture_period_obj) },
|
|
};
|
|
STATIC MP_DEFINE_CONST_DICT(frequencyio_frequencyin_locals_dict, frequencyio_frequencyin_locals_dict_table);
|
|
|
|
MP_DEFINE_CONST_OBJ_TYPE(
|
|
frequencyio_frequencyin_type,
|
|
MP_QSTR_frequencyin,
|
|
MP_TYPE_FLAG_NONE,
|
|
make_new, frequencyio_frequencyin_make_new,
|
|
locals_dict, &frequencyio_frequencyin_locals_dict
|
|
);
|