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[bluetooth_proxy] Optimize UUID conversion and reduce flash usage by 296 bytes

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This commit is contained in:
J. Nick Koston
2025-08-12 18:54:23 -05:00
parent 7ffdaa1f06
commit 7b116be48b
4 changed files with 27 additions and 12 deletions
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29
esphome/components/bluetooth_proxy/bluetooth_connection.cpp
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@@ -1,5 +1,6 @@
#include "bluetooth_connection.h"
#include <cstring>
#include "esphome/components/api/api_pb2.h"
#include "esphome/core/helpers.h"
#include "esphome/core/log.h"
@@ -12,16 +13,26 @@ namespace esphome::bluetooth_proxy {
static const char *const TAG = "bluetooth_proxy.connection";
// This function allocates nothing and directly packs UUIDs into the output array
// The base UUID is stored in flash memory as constexpr
static void fill_128bit_uuid_array(std::array<uint64_t, 2> &out, esp_bt_uuid_t uuid_source) {
esp_bt_uuid_t uuid = espbt::ESPBTUUID::from_uuid(uuid_source).as_128bit().get_uuid();
out[0] = ((uint64_t) uuid.uuid.uuid128[15] << 56) | ((uint64_t) uuid.uuid.uuid128[14] << 48) |
((uint64_t) uuid.uuid.uuid128[13] << 40) | ((uint64_t) uuid.uuid.uuid128[12] << 32) |
((uint64_t) uuid.uuid.uuid128[11] << 24) | ((uint64_t) uuid.uuid.uuid128[10] << 16) |
((uint64_t) uuid.uuid.uuid128[9] << 8) | ((uint64_t) uuid.uuid.uuid128[8]);
out[1] = ((uint64_t) uuid.uuid.uuid128[7] << 56) | ((uint64_t) uuid.uuid.uuid128[6] << 48) |
((uint64_t) uuid.uuid.uuid128[5] << 40) | ((uint64_t) uuid.uuid.uuid128[4] << 32) |
((uint64_t) uuid.uuid.uuid128[3] << 24) | ((uint64_t) uuid.uuid.uuid128[2] << 16) |
((uint64_t) uuid.uuid.uuid128[1] << 8) | ((uint64_t) uuid.uuid.uuid128[0]);
// Bluetooth base UUID: 00000000-0000-1000-8000-00805F9B34FB
// Pack 32/16-bit UUID directly into out[0] with bytes 12-15
out[0] = uuid_source.len == ESP_UUID_LEN_128
? (((uint64_t) uuid_source.uuid.uuid128[15] << 56) | ((uint64_t) uuid_source.uuid.uuid128[14] << 48) |
((uint64_t) uuid_source.uuid.uuid128[13] << 40) | ((uint64_t) uuid_source.uuid.uuid128[12] << 32) |
((uint64_t) uuid_source.uuid.uuid128[11] << 24) | ((uint64_t) uuid_source.uuid.uuid128[10] << 16) |
((uint64_t) uuid_source.uuid.uuid128[9] << 8) | ((uint64_t) uuid_source.uuid.uuid128[8]))
: (((uint64_t) (uuid_source.len == ESP_UUID_LEN_16 ? uuid_source.uuid.uuid16 : uuid_source.uuid.uuid32)
<< 32) |
0x00001000ULL);
// Pack bytes 0-7 into out[1] - this part is always the same for the base UUID
out[1] = uuid_source.len == ESP_UUID_LEN_128
? ((uint64_t) uuid_source.uuid.uuid128[7] << 56) | ((uint64_t) uuid_source.uuid.uuid128[6] << 48) |
((uint64_t) uuid_source.uuid.uuid128[5] << 40) | ((uint64_t) uuid_source.uuid.uuid128[4] << 32) |
((uint64_t) uuid_source.uuid.uuid128[3] << 24) | ((uint64_t) uuid_source.uuid.uuid128[2] << 16) |
((uint64_t) uuid_source.uuid.uuid128[1] << 8) | ((uint64_t) uuid_source.uuid.uuid128[0])
: 0x800000805F9B34FBULL; // Precalculated base UUID bytes 0-7
}
// Helper to fill UUID in the appropriate format based on client support and UUID type

4
esphome/components/esp32_ble/ble_uuid.cpp
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@@ -1,6 +1,7 @@
#include "ble_uuid.h"
#ifdef USE_ESP32
#ifdef USE_ESP32_BLE_DEVICE
#include <cstring>
#include <cstdio>
@@ -190,4 +191,5 @@ std::string ESPBTUUID::to_string() const {
} // namespace esphome::esp32_ble
#endif
#endif // USE_ESP32_BLE_DEVICE
#endif // USE_ESP32

4
esphome/components/esp32_ble/ble_uuid.h
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@@ -4,6 +4,7 @@
#include "esphome/core/helpers.h"
#ifdef USE_ESP32
#ifdef USE_ESP32_BLE_DEVICE
#include <string>
#include <esp_bt_defs.h>
@@ -42,4 +43,5 @@ class ESPBTUUID {
} // namespace esphome::esp32_ble
#endif
#endif // USE_ESP32_BLE_DEVICE
#endif // USE_ESP32

2
esphome/components/esp32_ble_tracker/esp32_ble_tracker.h
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@@ -33,12 +33,12 @@ enum AdvertisementParserType {
RAW_ADVERTISEMENTS,
};
#ifdef USE_ESP32_BLE_DEVICE
struct ServiceData {
ESPBTUUID uuid;
adv_data_t data;
};
#ifdef USE_ESP32_BLE_DEVICE
class ESPBLEiBeacon {
public:
ESPBLEiBeacon() { memset(&this->beacon_data_, 0, sizeof(this->beacon_data_)); }