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|
/*
* 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 <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/analogio/AnalogIn.h"
#include "shared-bindings/util.h"
//| class AnalogIn:
//| """Read analog voltage levels
//|
//| Usage::
//|
//| import analogio
//| from board import *
//|
//| adc = analogio.AnalogIn(A1)
//| val = adc.value"""
//|
//| def __init__(self, pin: microcontroller.Pin) -> None:
//| """Use the AnalogIn on the given pin. The reference voltage varies by
//| platform so use ``reference_voltage`` to read the configured setting.
//|
//| :param ~microcontroller.Pin pin: the pin to read from"""
//| ...
//|
STATIC mp_obj_t analogio_analogin_make_new(const mp_obj_type_t *type,
mp_uint_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]);
analogio_analogin_obj_t *self = m_new_obj(analogio_analogin_obj_t);
self->base.type = &analogio_analogin_type;
common_hal_analogio_analogin_construct(self, pin);
return MP_OBJ_FROM_PTR(self);
}
//| def deinit(self) -> None:
//| """Turn off the AnalogIn and release the pin for other use."""
//| ...
//|
STATIC mp_obj_t analogio_analogin_deinit(mp_obj_t self_in) {
analogio_analogin_obj_t *self = MP_OBJ_TO_PTR(self_in);
common_hal_analogio_analogin_deinit(self);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(analogio_analogin_deinit_obj, analogio_analogin_deinit);
STATIC void check_for_deinit(analogio_analogin_obj_t *self) {
if (common_hal_analogio_analogin_deinited(self)) {
raise_deinited_error();
}
}
//| def __enter__(self) -> AnalogIn:
//| """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 analogio_analogin___exit__(size_t n_args, const mp_obj_t *args) {
(void)n_args;
common_hal_analogio_analogin_deinit(args[0]);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(analogio_analogin___exit___obj, 4, 4, analogio_analogin___exit__);
//| value: int
//| """The value on the analog pin between 0 and 65535 inclusive (16-bit). (read-only)
//|
//| Even if the underlying analog to digital converter (ADC) is lower
//| resolution, the value is 16-bit."""
//|
STATIC mp_obj_t analogio_analogin_obj_get_value(mp_obj_t self_in) {
analogio_analogin_obj_t *self = MP_OBJ_TO_PTR(self_in);
check_for_deinit(self);
return MP_OBJ_NEW_SMALL_INT(common_hal_analogio_analogin_get_value(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(analogio_analogin_get_value_obj, analogio_analogin_obj_get_value);
MP_PROPERTY_GETTER(analogio_analogin_value_obj,
(mp_obj_t)&analogio_analogin_get_value_obj);
//| reference_voltage: float
//| """The maximum voltage measurable (also known as the reference voltage) as a
//| `float` in Volts. Note the ADC value may not scale to the actual voltage linearly
//| at ends of the analog range."""
//|
STATIC mp_obj_t analogio_analogin_obj_get_reference_voltage(mp_obj_t self_in) {
analogio_analogin_obj_t *self = MP_OBJ_TO_PTR(self_in);
check_for_deinit(self);
float reference_voltage = common_hal_analogio_analogin_get_reference_voltage(self);
if (reference_voltage <= 0.0f) {
return mp_const_none;
} else {
return mp_obj_new_float(reference_voltage);
}
}
MP_DEFINE_CONST_FUN_OBJ_1(analogio_analogin_get_reference_voltage_obj,
analogio_analogin_obj_get_reference_voltage);
MP_PROPERTY_GETTER(analogio_analogin_reference_voltage_obj,
(mp_obj_t)&analogio_analogin_get_reference_voltage_obj);
STATIC const mp_rom_map_elem_t analogio_analogin_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&analogio_analogin_deinit_obj) },
{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) },
{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&analogio_analogin___exit___obj) },
{ MP_ROM_QSTR(MP_QSTR_value), MP_ROM_PTR(&analogio_analogin_value_obj)},
{ MP_ROM_QSTR(MP_QSTR_reference_voltage), MP_ROM_PTR(&analogio_analogin_reference_voltage_obj)},
};
STATIC MP_DEFINE_CONST_DICT(analogio_analogin_locals_dict, analogio_analogin_locals_dict_table);
const mp_obj_type_t analogio_analogin_type = {
{ &mp_type_type },
.name = MP_QSTR_AnalogIn,
.make_new = analogio_analogin_make_new,
.locals_dict = (mp_obj_t)&analogio_analogin_locals_dict,
};
|
