ccbb5e84f9
Docs are here: http://tannewt-micropython.readthedocs.io/en/microcontroller/ It differs from upstream's machine in the following ways: * Python API is identical across ports due to code structure. (Lives in shared-bindings) * Focuses on abstracting common functionality (AnalogIn) and not representing structure (ADC). * Documentation lives with code making it easy to ensure they match. * Pin is split into references (board.D13 and microcontroller.pin.PA17) and functionality (DigitalInOut). * All nativeio classes claim underlying hardware resources when inited on construction, support Context Managers (aka with statements) and have deinit methods which release the claimed hardware. * All constructors take pin references rather than peripheral ids. Its up to the implementation to find hardware or throw and exception.
107 lines
3.7 KiB
C
107 lines
3.7 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) 2013, 2014 Damien P. George
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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 <string.h>
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#include "py/binary.h"
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#include "py/mphal.h"
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#include "py/nlr.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "shared-bindings/nativeio/AnalogIn.h"
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//| .. currentmodule:: nativeio
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//|
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//| :class:`AnalogIn` -- read analog voltage
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//| ============================================
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//|
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//| Usage::
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//|
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//| import nativeio
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//| from board import *
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//|
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//| with nativeio.AnalogIn(A1) as adc:
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//| val = adc.value
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//|
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//| .. class:: AnalogIn(pin)
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//|
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//| Use the AnalogIn on the given pin.
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//|
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//| :param ~microcontroller.Pin pin: the pin to read from
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//|
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STATIC mp_obj_t nativeio_analogin_make_new(const mp_obj_type_t *type,
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mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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// check number of arguments
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mp_arg_check_num(n_args, n_kw, 1, 1, false);
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// 1st argument is the pin
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mp_obj_t pin_obj = args[0];
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nativeio_analogin_obj_t *self = m_new_obj(nativeio_analogin_obj_t);
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self->base.type = &nativeio_analogin_type;
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const mcu_pin_obj_t *pin = MP_OBJ_TO_PTR(pin_obj);
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common_hal_nativeio_analogin_construct(self, pin);
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return (mp_obj_t) self;
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}
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//| .. attribute:: value
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//|
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//| Read the value on the analog pin and return it. The returned value
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//| will be between 0 and 65535 inclusive (16-bit). Even if the underlying
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//| analog to digital converter (ADC) is lower resolution, the result will
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//| be scaled to be 16-bit.
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//|
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//| :return: the data read
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//| :rtype: int
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//|
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STATIC mp_obj_t nativeio_analogin_obj_get_value(mp_obj_t self_in) {
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nativeio_analogin_obj_t *self = MP_OBJ_TO_PTR(self_in);
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return MP_OBJ_NEW_SMALL_INT(common_hal_nativeio_analogin_get_value(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(nativeio_analogin_get_value_obj, nativeio_analogin_obj_get_value);
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mp_obj_property_t nativeio_analogin_value_obj = {
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.base.type = &mp_type_property,
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.proxy = {(mp_obj_t)&nativeio_analogin_get_value_obj,
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(mp_obj_t)&mp_const_none_obj,
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(mp_obj_t)&mp_const_none_obj},
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};
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STATIC const mp_rom_map_elem_t nativeio_analogin_locals_dict_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_value), MP_ROM_PTR(&nativeio_analogin_value_obj)},
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};
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STATIC MP_DEFINE_CONST_DICT(nativeio_analogin_locals_dict, nativeio_analogin_locals_dict_table);
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const mp_obj_type_t nativeio_analogin_type = {
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{ &mp_type_type },
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.name = MP_QSTR_AnalogIn,
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.make_new = nativeio_analogin_make_new,
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.locals_dict = (mp_obj_t)&nativeio_analogin_locals_dict,
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};
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