diff options
Diffstat (limited to 'circuitpython/devices/ble_hci/common-hal/_bleio/Service.c')
-rw-r--r-- | circuitpython/devices/ble_hci/common-hal/_bleio/Service.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/circuitpython/devices/ble_hci/common-hal/_bleio/Service.c b/circuitpython/devices/ble_hci/common-hal/_bleio/Service.c new file mode 100644 index 0000000..11b7efd --- /dev/null +++ b/circuitpython/devices/ble_hci/common-hal/_bleio/Service.c @@ -0,0 +1,130 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2020 Dan Halbert for Adafruit Industries + * 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/runtime.h" +#include "shared-bindings/_bleio/__init__.h" +#include "shared-bindings/_bleio/Characteristic.h" +#include "shared-bindings/_bleio/Descriptor.h" +#include "shared-bindings/_bleio/Service.h" +#include "shared-bindings/_bleio/Adapter.h" + +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) { + self->uuid = uuid; + self->characteristic_list = characteristic_list; + self->is_remote = false; + self->connection = NULL; + self->is_secondary = is_secondary; + + vm_used_ble = true; + + self->handle = bleio_adapter_add_attribute(&common_hal_bleio_adapter_obj, MP_OBJ_TO_PTR(self)); + self->start_handle = self->handle; + self->end_handle = self->handle; + if (self->handle == BLE_GATT_HANDLE_INVALID) { + return 1; + } + return 0; +} + +void common_hal_bleio_service_construct(bleio_service_obj_t *self, bleio_uuid_obj_t *uuid, bool is_secondary) { + if (_common_hal_bleio_service_construct(self, uuid, is_secondary, + mp_obj_new_list(0, NULL)) != 0) { + mp_raise_RuntimeError(translate("Failed to add service")); + } +} + +void bleio_service_from_connection(bleio_service_obj_t *self, mp_obj_t connection) { + self->handle = 0xFFFF; + self->uuid = NULL; + self->characteristic_list = mp_obj_new_list(0, NULL); + self->is_remote = true; + self->is_secondary = false; + self->connection = connection; +} + +bleio_uuid_obj_t *common_hal_bleio_service_get_uuid(bleio_service_obj_t *self) { + return self->uuid; +} + +mp_obj_tuple_t *common_hal_bleio_service_get_characteristics(bleio_service_obj_t *self) { + return mp_obj_new_tuple(self->characteristic_list->len, self->characteristic_list->items); +} + +bool common_hal_bleio_service_get_is_remote(bleio_service_obj_t *self) { + return self->is_remote; +} + +bool common_hal_bleio_service_get_is_secondary(bleio_service_obj_t *self) { + return self->is_secondary; +} + +void common_hal_bleio_service_add_characteristic(bleio_service_obj_t *self, + bleio_characteristic_obj_t *characteristic, + mp_buffer_info_t *initial_value_bufinfo, + const char *user_description) { + + if (self->handle != common_hal_bleio_adapter_obj.last_added_service_handle) { + mp_raise_bleio_BluetoothError( + translate("Characteristic can only be added to most recently added service")); + } + characteristic->decl_handle = bleio_adapter_add_attribute( + &common_hal_bleio_adapter_obj, MP_OBJ_TO_PTR(characteristic)); + // This is the value handle. + characteristic->handle = bleio_adapter_add_attribute( + &common_hal_bleio_adapter_obj, MP_OBJ_TO_PTR(characteristic)); + + self->end_handle = characteristic->handle; + + if (characteristic->props & (CHAR_PROP_NOTIFY | CHAR_PROP_INDICATE)) { + // We need a CCCD if this characteristic is doing notify or indicate. + bleio_descriptor_obj_t *cccd = m_new_obj(bleio_descriptor_obj_t); + cccd->base.type = &bleio_descriptor_type; + + uint16_t zero = 0; + mp_buffer_info_t zero_cccd_value = { + .buf = &zero, + .len = sizeof(zero), + }; + + common_hal_bleio_descriptor_construct( + cccd, + characteristic, + &cccd_uuid, // 0x2902 + SECURITY_MODE_OPEN, // CCCD read perm + characteristic->read_perm, // Make CCCD write perm match characteristic read perm. + 2, // 2 bytes + true, // fixed length + &zero_cccd_value // Initial value is 0. + ); + + // Adds CCCD to attribute table, and also extends self->end_handle to include the CCCD. + common_hal_bleio_characteristic_add_descriptor(characteristic, cccd); + characteristic->cccd = cccd; + } + + mp_obj_list_append(self->characteristic_list, MP_OBJ_FROM_PTR(characteristic)); +} |