115 lines
4.9 KiB
C
115 lines
4.9 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2019 Dan Halbert for Adafruit Industries
|
|
* Copyright (c) 2018 Artur Pacholec
|
|
* Copyright (c) 2016 Glenn Ruben Bakke
|
|
*
|
|
* 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/Descriptor.h"
|
|
#include "shared-bindings/_bleio/Service.h"
|
|
#include "shared-bindings/_bleio/UUID.h"
|
|
|
|
void common_hal_bleio_descriptor_construct(bleio_descriptor_obj_t *self, bleio_characteristic_obj_t *characteristic, bleio_uuid_obj_t *uuid, bleio_attribute_security_mode_t read_perm, bleio_attribute_security_mode_t write_perm, mp_int_t max_length, bool fixed_length, mp_buffer_info_t *initial_value_bufinfo) {
|
|
self->characteristic = characteristic;
|
|
self->uuid = uuid;
|
|
self->handle = BLE_GATT_HANDLE_INVALID;
|
|
self->read_perm = read_perm;
|
|
self->write_perm = write_perm;
|
|
self->value = mp_obj_new_bytes(initial_value_bufinfo->buf, initial_value_bufinfo->len);
|
|
|
|
const mp_int_t max_length_max = fixed_length ? BLE_GATTS_FIX_ATTR_LEN_MAX : BLE_GATTS_VAR_ATTR_LEN_MAX;
|
|
if (max_length < 0 || max_length > max_length_max) {
|
|
mp_raise_ValueError_varg(translate("max_length must be 0-%d when fixed_length is %s"),
|
|
max_length_max, fixed_length ? "True" : "False");
|
|
}
|
|
self->max_length = max_length;
|
|
self->fixed_length = fixed_length;
|
|
|
|
common_hal_bleio_descriptor_set_value(self, initial_value_bufinfo);
|
|
}
|
|
|
|
bleio_uuid_obj_t *common_hal_bleio_descriptor_get_uuid(bleio_descriptor_obj_t *self) {
|
|
return self->uuid;
|
|
}
|
|
|
|
bleio_characteristic_obj_t *common_hal_bleio_descriptor_get_characteristic(bleio_descriptor_obj_t *self) {
|
|
return self->characteristic;
|
|
}
|
|
|
|
size_t common_hal_bleio_descriptor_get_value(bleio_descriptor_obj_t *self, uint8_t *buf, size_t len) {
|
|
// Do GATT operations only if this descriptor has been registered
|
|
if (self->handle != BLE_GATT_HANDLE_INVALID) {
|
|
if (common_hal_bleio_service_get_is_remote(self->characteristic->service)) {
|
|
// uint16_t conn_handle = bleio_connection_get_conn_handle(self->characteristic->service->connection);
|
|
// FIX have att_read_req fill in a buffer
|
|
// uint8_t rsp[MAX(len, 512)];
|
|
// return att_read_req(conn_handle, self->handle, rsp, len);
|
|
return 0;
|
|
} else {
|
|
mp_buffer_info_t bufinfo;
|
|
if (!mp_get_buffer(self->value, &bufinfo, MP_BUFFER_READ)) {
|
|
return 0;
|
|
}
|
|
const size_t actual_length = MIN(len, bufinfo.len);
|
|
memcpy(buf, bufinfo.buf, actual_length);
|
|
return actual_length;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void common_hal_bleio_descriptor_set_value(bleio_descriptor_obj_t *self, mp_buffer_info_t *bufinfo) {
|
|
if (self->fixed_length && bufinfo->len != self->max_length) {
|
|
mp_raise_ValueError(translate("Value length != required fixed length"));
|
|
}
|
|
if (bufinfo->len > self->max_length) {
|
|
mp_raise_ValueError(translate("Value length > max_length"));
|
|
}
|
|
|
|
self->value = mp_obj_new_bytes(bufinfo->buf, bufinfo->len);
|
|
|
|
// Do GATT operations only if this descriptor has been registered.
|
|
if (self->handle != BLE_GATT_HANDLE_INVALID) {
|
|
if (common_hal_bleio_service_get_is_remote(self->characteristic->service)) {
|
|
// FIX
|
|
// uint16_t conn_handle = bleio_connection_get_conn_handle(self->service->connection);
|
|
// att_write_req(conn_handle, self->handle, bufinfo->buf, bufinfo->len, rsp);
|
|
} else {
|
|
// Always write the value locally even if no connections are active.
|
|
if (self->fixed_length && bufinfo->len != self->max_length) {
|
|
return;
|
|
}
|
|
if (bufinfo->len > self->max_length) {
|
|
return;
|
|
}
|
|
|
|
self->value = mp_obj_new_bytes(bufinfo->buf, bufinfo->len);
|
|
}
|
|
}
|
|
}
|