circuitpython/devices/ble_hci/common-hal/_bleio/UUID.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 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 <string.h>
#include "py/runtime.h"
#include "common-hal/_bleio/UUID.h"
#include "shared-bindings/_bleio/__init__.h"
#include "shared-bindings/_bleio/Adapter.h"
// If uuid128 is NULL, this is a Bluetooth SIG 16-bit UUID.
// If uuid128 is not NULL, it's a 128-bit (16-byte) UUID, with bytes 12 and 13 zero'd out, where
// the 16-bit part goes. Those 16 bits are passed in uuid16.
void common_hal_bleio_uuid_construct(bleio_uuid_obj_t *self, mp_int_t uuid16, const uint8_t uuid128[16]) {
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self->size = uuid128 == NULL ? 16 : 128;
self->uuid16 = uuid16;
if (uuid128) {
memcpy(self->uuid128, uuid128, 16);
self->uuid128[12] = uuid16 & 0xff;
self->uuid128[13] = uuid16 >> 8;
} else {
memset(self->uuid128, 0, 16);
}
}
uint32_t common_hal_bleio_uuid_get_size(bleio_uuid_obj_t *self) {
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return self->size;
}
uint32_t common_hal_bleio_uuid_get_uuid16(bleio_uuid_obj_t *self) {
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return self->uuid16;
}
void common_hal_bleio_uuid_get_uuid128(bleio_uuid_obj_t *self, uint8_t uuid128[16]) {
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memcpy(uuid128, self->uuid128, 16);
}
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void common_hal_bleio_uuid_pack_into(bleio_uuid_obj_t *self, uint8_t *buf) {
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if (self->size == 16) {
buf[0] = self->uuid16 & 0xff;
buf[1] = self->uuid16 >> 8;
} else {
common_hal_bleio_uuid_get_uuid128(self, buf);
}
}
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// Return a uui16 only if this is a standard uuid. Otherwise return BLE_UUID_UNKNOWN.
uint16_t bleio_uuid_get_uuid16_or_unknown(bleio_uuid_obj_t *uuid) {
return uuid->size == 16 ? uuid->uuid16 : BLE_UUID_UNKNOWN;
}