circuitpython/shared-bindings/analogio/AnalogOut.c

145 lines
5.3 KiB
C

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* 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 "lib/utils/context_manager_helpers.h"
#include "py/objproperty.h"
#include "py/runtime.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "shared-bindings/analogio/AnalogOut.h"
#include "shared-bindings/util.h"
#include "supervisor/shared/translate.h"
//| class AnalogOut:
//| """Output analog values (a specific voltage).
//|
//| Example usage::
//|
//| import analogio
//| from microcontroller import pin
//|
//| dac = analogio.AnalogOut(pin.PA02) # output on pin PA02
//| dac.value = 32768 # makes PA02 1.65V"""
//|
//| def __init__(self, pin: microcontroller.Pin):
//| """Use the AnalogOut on the given pin.
//|
//| :param ~microcontroller.Pin pin: the pin to output to"""
//| ...
//|
STATIC mp_obj_t analogio_analogout_make_new(const mp_obj_type_t *type, mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
// check arguments
mp_arg_check_num(n_args, kw_args, 1, 1, false);
const mcu_pin_obj_t *pin = validate_obj_is_free_pin(args[0]);
analogio_analogout_obj_t *self = m_new_obj(analogio_analogout_obj_t);
self->base.type = &analogio_analogout_type;
common_hal_analogio_analogout_construct(self, pin);
return MP_OBJ_FROM_PTR(self);
}
//| def deinit(self, ) -> Any:
//| """Turn off the AnalogOut and release the pin for other use."""
//| ...
//|
STATIC mp_obj_t analogio_analogout_deinit(mp_obj_t self_in) {
analogio_analogout_obj_t *self = self_in;
common_hal_analogio_analogout_deinit(self);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(analogio_analogout_deinit_obj, analogio_analogout_deinit);
//| def __enter__(self, ) -> Any:
//| """No-op used by Context Managers."""
//| ...
//|
// Provided by context manager helper.
//| def __exit__(self, ) -> Any:
//| """Automatically deinitializes the hardware when exiting a context. See
//| :ref:`lifetime-and-contextmanagers` for more info."""
//| ...
//|
STATIC mp_obj_t analogio_analogout___exit__(size_t n_args, const mp_obj_t *args) {
(void)n_args;
common_hal_analogio_analogout_deinit(args[0]);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(analogio_analogout___exit___obj, 4, 4, analogio_analogout___exit__);
//| value: Any = ...
//| """The value on the analog pin between 0 and 65535 inclusive (16-bit). (write-only)
//|
//| Even if the underlying digital to analog converter (DAC) is lower
//| resolution, the value is 16-bit."""
//|
STATIC mp_obj_t analogio_analogout_obj_set_value(mp_obj_t self_in, mp_obj_t value) {
analogio_analogout_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (common_hal_analogio_analogout_deinited(self)) {
raise_deinited_error();
}
uint32_t v = mp_obj_get_int(value);
if (v >= (1 << 16)) {
mp_raise_ValueError(translate("AnalogOut is only 16 bits. Value must be less than 65536."));
}
common_hal_analogio_analogout_set_value(self, v);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(analogio_analogout_set_value_obj, analogio_analogout_obj_set_value);
const mp_obj_property_t analogio_analogout_value_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&analogio_analogout_set_value_obj,
(mp_obj_t)&mp_const_none_obj},
};
STATIC const mp_rom_map_elem_t analogio_analogout_locals_dict_table[] = {
// instance methods
{ MP_OBJ_NEW_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&analogio_analogout_deinit_obj) },
{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) },
{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&analogio_analogout___exit___obj) },
// Properties
{ MP_OBJ_NEW_QSTR(MP_QSTR_value), (mp_obj_t)&analogio_analogout_value_obj },
};
STATIC MP_DEFINE_CONST_DICT(analogio_analogout_locals_dict, analogio_analogout_locals_dict_table);
const mp_obj_type_t analogio_analogout_type = {
{ &mp_type_type },
.name = MP_QSTR_AnalogOut,
.make_new = analogio_analogout_make_new,
.locals_dict = (mp_obj_t)&analogio_analogout_locals_dict,
};