circuitpython/shared-bindings/bleio/Service.c

152 lines
6.1 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Glenn Ruben Bakke
* Copyright (c) 2018 Artur Pacholec
*
* 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 "py/objproperty.h"
#include "py/runtime.h"
#include "shared-bindings/bleio/Characteristic.h"
#include "shared-bindings/bleio/Service.h"
#include "shared-bindings/bleio/UUID.h"
//| .. currentmodule:: bleio
//|
//| :class:`Service` -- BLE service
//| =========================================================
//|
//| Stores information about a BLE service and its characteristics.
//|
//| .. class:: Service(uuid, characteristics, *, secondary=False)
//|
//| Create a new Service object identified by the specified UUID.
//| To mark the service as secondary, pass `True` as :py:data:`secondary`.
//|
//| :param bleio.UUID uuid: The uuid of the service
//| :param iterable characteristics: the Characteristic objects for this service
//| :param bool secondary: If the service is a secondary one
//|
STATIC mp_obj_t bleio_service_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_uuid, ARG_characteristics, ARG_secondary };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_uuid, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_characteristics, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_secondary, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
};
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
const mp_obj_t uuid = args[ARG_uuid].u_obj;
if (!MP_OBJ_IS_TYPE(uuid, &bleio_uuid_type)) {
mp_raise_ValueError(translate("Expected a UUID"));
}
bleio_service_obj_t *self = m_new_obj(bleio_service_obj_t);
self->char_list = mp_obj_new_list(0, NULL);
self->base.type = &bleio_service_type;
self->device = mp_const_none;
self->handle = 0xFFFF;
self->is_secondary = args[ARG_secondary].u_bool;
self->uuid = MP_OBJ_TO_PTR(uuid);
// If characteristics is not an iterable, an exception will be thrown.
mp_obj_iter_buf_t iter_buf;
mp_obj_t iterable = mp_getiter(args[ARG_characteristics].u_obj, &iter_buf);
mp_obj_t characteristic;
while ((characteristic = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
if (!MP_OBJ_IS_TYPE(characteristic, &bleio_characteristic_type)) {
mp_raise_ValueError(translate("characteristics includes an object that is not a Characteristic"));
}
bleio_characteristic_obj_t *characteristic_ptr = MP_OBJ_TO_PTR(characteristic);
if (common_hal_bleio_uuid_get_uuid128_reference(uuid) !=
common_hal_bleio_uuid_get_uuid128_reference(characteristic_ptr->uuid)) {
// The descriptor base UUID doesn't match the characteristic base UUID.
mp_raise_ValueError(translate("Characteristic UUID doesn't match Service UUID"));
}
characteristic_ptr->service = self;
mp_obj_list_append(self->char_list, characteristic);
}
// Do port-specific initialization.
common_hal_bleio_service_construct(self);
return MP_OBJ_FROM_PTR(self);
}
//| .. attribute:: characteristics
//|
//| A `list` of `bleio.Characteristic` that are offered by this service. (read-only)
//|
STATIC mp_obj_t bleio_service_get_characteristics(mp_obj_t self_in) {
bleio_service_obj_t *self = MP_OBJ_TO_PTR(self_in);
// Return list as a tuple so user won't be able to change it.
mp_obj_list_t *char_list = MP_OBJ_TO_PTR(self->char_list);
return mp_obj_new_tuple(char_list->len, char_list->items);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(bleio_service_get_characteristics_obj, bleio_service_get_characteristics);
const mp_obj_property_t bleio_service_characteristics_obj = {
.base.type = &mp_type_property,
.proxy = { (mp_obj_t)&bleio_service_get_characteristics_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj },
};
//| .. attribute:: uuid
//|
//| The UUID of this service. (read-only)
//|
STATIC mp_obj_t bleio_service_get_uuid(mp_obj_t self_in) {
bleio_service_obj_t *self = MP_OBJ_TO_PTR(self_in);
return MP_OBJ_FROM_PTR(self->uuid);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(bleio_service_get_uuid_obj, bleio_service_get_uuid);
const mp_obj_property_t bleio_service_uuid_obj = {
.base.type = &mp_type_property,
.proxy = { (mp_obj_t)&bleio_service_get_uuid_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj },
};
STATIC const mp_rom_map_elem_t bleio_service_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_characteristics), MP_ROM_PTR(&bleio_service_characteristics_obj) },
{ MP_ROM_QSTR(MP_QSTR_uuid), MP_ROM_PTR(&bleio_service_uuid_obj) },
};
STATIC MP_DEFINE_CONST_DICT(bleio_service_locals_dict, bleio_service_locals_dict_table);
const mp_obj_type_t bleio_service_type = {
{ &mp_type_type },
.name = MP_QSTR_Service,
.make_new = bleio_service_make_new,
.locals_dict = (mp_obj_dict_t*)&bleio_service_locals_dict
};