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Code Issues Releases Wiki Activity

Optimize bluetooth_proxy memory usage on ESP32 (#9114)

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
J. Nick Koston
2025-06-19 03:11:13 +02:00
committed by GitHub
parent eeb0710ad4
commit 2e11e66db4
4 changed files with 49 additions and 19 deletions
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33
esphome/components/esp32_ble_client/ble_client_base.h
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@@ -96,21 +96,34 @@ class BLEClientBase : public espbt::ESPBTClient, public Component {
void set_state(espbt::ClientState st) override;
protected:
int gattc_if_;
esp_bd_addr_t remote_bda_;
esp_ble_addr_type_t remote_addr_type_{BLE_ADDR_TYPE_PUBLIC};
uint16_t conn_id_{UNSET_CONN_ID};
// Memory optimized layout for 32-bit systems
// Group 1: 8-byte types
uint64_t address_{0};
bool auto_connect_{false};
// Group 2: Container types (grouped for memory optimization)
std::string address_str_{};
uint8_t connection_index_;
int16_t service_count_{0};
uint16_t mtu_{23};
bool paired_{false};
espbt::ConnectionType connection_type_{espbt::ConnectionType::V1};
std::vector<BLEService *> services_;
// Group 3: 4-byte types
int gattc_if_;
esp_gatt_status_t status_{ESP_GATT_OK};
// Group 4: Arrays (6 bytes)
esp_bd_addr_t remote_bda_;
// Group 5: 2-byte types
uint16_t conn_id_{UNSET_CONN_ID};
uint16_t mtu_{23};
// Group 6: 1-byte types and small enums
esp_ble_addr_type_t remote_addr_type_{BLE_ADDR_TYPE_PUBLIC};
espbt::ConnectionType connection_type_{espbt::ConnectionType::V1};
uint8_t connection_index_;
uint8_t service_count_{0}; // ESP32 has max handles < 255, typical devices have < 50 services
bool auto_connect_{false};
bool paired_{false};
// 6 bytes used, 2 bytes padding
void log_event_(const char *name);
};