130 lines
5.1 KiB
C
130 lines
5.1 KiB
C
/*
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* This file is part of the MicroPython 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) 2020 Dan Halbert for Adafruit Industries
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* Copyright (c) 2018 Artur Pacholec
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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 "py/runtime.h"
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#include "shared-bindings/_bleio/__init__.h"
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#include "shared-bindings/_bleio/Characteristic.h"
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#include "shared-bindings/_bleio/Descriptor.h"
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#include "shared-bindings/_bleio/Service.h"
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#include "shared-bindings/_bleio/Adapter.h"
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uint32_t _common_hal_bleio_service_construct(bleio_service_obj_t *self, bleio_uuid_obj_t *uuid, bool is_secondary, mp_obj_list_t *characteristic_list) {
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self->uuid = uuid;
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self->characteristic_list = characteristic_list;
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self->is_remote = false;
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self->connection = NULL;
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self->is_secondary = is_secondary;
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vm_used_ble = true;
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self->handle = bleio_adapter_add_attribute(&common_hal_bleio_adapter_obj, MP_OBJ_TO_PTR(self));
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self->start_handle = self->handle;
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self->end_handle = self->handle;
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if (self->handle == BLE_GATT_HANDLE_INVALID) {
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return 1;
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}
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return 0;
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}
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void common_hal_bleio_service_construct(bleio_service_obj_t *self, bleio_uuid_obj_t *uuid, bool is_secondary) {
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if (_common_hal_bleio_service_construct(self, uuid, is_secondary,
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mp_obj_new_list(0, NULL)) != 0) {
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mp_raise_RuntimeError(MP_ERROR_TEXT("Failed to add service"));
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}
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}
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void bleio_service_from_connection(bleio_service_obj_t *self, mp_obj_t connection) {
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self->handle = 0xFFFF;
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self->uuid = NULL;
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self->characteristic_list = mp_obj_new_list(0, NULL);
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self->is_remote = true;
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self->is_secondary = false;
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self->connection = connection;
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}
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bleio_uuid_obj_t *common_hal_bleio_service_get_uuid(bleio_service_obj_t *self) {
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return self->uuid;
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}
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mp_obj_tuple_t *common_hal_bleio_service_get_characteristics(bleio_service_obj_t *self) {
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return mp_obj_new_tuple(self->characteristic_list->len, self->characteristic_list->items);
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}
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bool common_hal_bleio_service_get_is_remote(bleio_service_obj_t *self) {
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return self->is_remote;
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}
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bool common_hal_bleio_service_get_is_secondary(bleio_service_obj_t *self) {
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return self->is_secondary;
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}
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void common_hal_bleio_service_add_characteristic(bleio_service_obj_t *self,
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bleio_characteristic_obj_t *characteristic,
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mp_buffer_info_t *initial_value_bufinfo,
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const char *user_description) {
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if (self->handle != common_hal_bleio_adapter_obj.last_added_service_handle) {
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mp_raise_bleio_BluetoothError(
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MP_ERROR_TEXT("Characteristic can only be added to most recently added service"));
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}
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characteristic->decl_handle = bleio_adapter_add_attribute(
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&common_hal_bleio_adapter_obj, MP_OBJ_TO_PTR(characteristic));
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// This is the value handle.
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characteristic->handle = bleio_adapter_add_attribute(
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&common_hal_bleio_adapter_obj, MP_OBJ_TO_PTR(characteristic));
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self->end_handle = characteristic->handle;
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if (characteristic->props & (CHAR_PROP_NOTIFY | CHAR_PROP_INDICATE)) {
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// We need a CCCD if this characteristic is doing notify or indicate.
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bleio_descriptor_obj_t *cccd = mp_obj_malloc(bleio_descriptor_obj_t, &bleio_descriptor_type);
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uint16_t zero = 0;
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mp_buffer_info_t zero_cccd_value = {
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.buf = &zero,
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.len = sizeof(zero),
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};
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common_hal_bleio_descriptor_construct(
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cccd,
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characteristic,
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&cccd_uuid, // 0x2902
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SECURITY_MODE_OPEN, // CCCD read perm
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characteristic->read_perm, // Make CCCD write perm match characteristic read perm.
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2, // 2 bytes
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true, // fixed length
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&zero_cccd_value // Initial value is 0.
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);
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// Adds CCCD to attribute table, and also extends self->end_handle to include the CCCD.
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common_hal_bleio_characteristic_add_descriptor(characteristic, cccd);
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characteristic->cccd = cccd;
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}
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mp_obj_list_append(self->characteristic_list, MP_OBJ_FROM_PTR(characteristic));
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}
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