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Code Issues Releases Wiki Activity

Fix unbound BLE event queue growth and reduce memory usage (#9052)

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This commit is contained in:
J. Nick Koston
2025-06-14 23:45:41 -05:00
committed by GitHub
parent 78e3c6333f
commit 07cf6e723b
12 changed files with 397 additions and 195 deletions
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91
esphome/components/esp32_ble_tracker/esp32_ble_tracker.cpp
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@@ -50,9 +50,8 @@ void ESP32BLETracker::setup() {
ESP_LOGE(TAG, "BLE Tracker was marked failed by ESP32BLE");
return;
}
ExternalRAMAllocator<esp_ble_gap_cb_param_t::ble_scan_result_evt_param> allocator(
ExternalRAMAllocator<esp_ble_gap_cb_param_t::ble_scan_result_evt_param>::ALLOW_FAILURE);
this->scan_result_buffer_ = allocator.allocate(ESP32BLETracker::SCAN_RESULT_BUFFER_SIZE);
RAMAllocator<BLEScanResult> allocator;
this->scan_result_buffer_ = allocator.allocate(SCAN_RESULT_BUFFER_SIZE);
if (this->scan_result_buffer_ == nullptr) {
ESP_LOGE(TAG, "Could not allocate buffer for BLE Tracker!");
@@ -124,7 +123,7 @@ void ESP32BLETracker::loop() {
this->scan_result_index_ && // if it looks like we have a scan result we will take the lock
xSemaphoreTake(this->scan_result_lock_, 0)) {
uint32_t index = this->scan_result_index_;
if (index >= ESP32BLETracker::SCAN_RESULT_BUFFER_SIZE) {
if (index >= SCAN_RESULT_BUFFER_SIZE) {
ESP_LOGW(TAG, "Too many BLE events to process. Some devices may not show up.");
}
@@ -370,9 +369,6 @@ void ESP32BLETracker::recalculate_advertisement_parser_types() {
void ESP32BLETracker::gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) {
switch (event) {
case ESP_GAP_BLE_SCAN_RESULT_EVT:
this->gap_scan_result_(param->scan_rst);
break;
case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT:
this->gap_scan_set_param_complete_(param->scan_param_cmpl);
break;
@@ -385,11 +381,42 @@ void ESP32BLETracker::gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_ga
default:
break;
}
// Forward all events to clients (scan results are handled separately via gap_scan_event_handler)
for (auto *client : this->clients_) {
client->gap_event_handler(event, param);
}
}
void ESP32BLETracker::gap_scan_event_handler(const BLEScanResult &scan_result) {
ESP_LOGV(TAG, "gap_scan_result - event %d", scan_result.search_evt);
if (scan_result.search_evt == ESP_GAP_SEARCH_INQ_RES_EVT) {
if (xSemaphoreTake(this->scan_result_lock_, 0)) {
if (this->scan_result_index_ < SCAN_RESULT_BUFFER_SIZE) {
// Store BLEScanResult directly in our buffer
this->scan_result_buffer_[this->scan_result_index_++] = scan_result;
}
xSemaphoreGive(this->scan_result_lock_);
}
} else if (scan_result.search_evt == ESP_GAP_SEARCH_INQ_CMPL_EVT) {
// Scan finished on its own
if (this->scanner_state_ != ScannerState::RUNNING) {
if (this->scanner_state_ == ScannerState::STOPPING) {
ESP_LOGE(TAG, "Scan was not running when scan completed.");
} else if (this->scanner_state_ == ScannerState::STARTING) {
ESP_LOGE(TAG, "Scan was not started when scan completed.");
} else if (this->scanner_state_ == ScannerState::FAILED) {
ESP_LOGE(TAG, "Scan was in failed state when scan completed.");
} else if (this->scanner_state_ == ScannerState::IDLE) {
ESP_LOGE(TAG, "Scan was idle when scan completed.");
} else if (this->scanner_state_ == ScannerState::STOPPED) {
ESP_LOGE(TAG, "Scan was stopped when scan completed.");
}
}
this->set_scanner_state_(ScannerState::STOPPED);
}
}
void ESP32BLETracker::gap_scan_set_param_complete_(const esp_ble_gap_cb_param_t::ble_scan_param_cmpl_evt_param &param) {
ESP_LOGV(TAG, "gap_scan_set_param_complete - status %d", param.status);
if (param.status == ESP_BT_STATUS_DONE) {
@@ -444,34 +471,6 @@ void ESP32BLETracker::gap_scan_stop_complete_(const esp_ble_gap_cb_param_t::ble_
this->set_scanner_state_(ScannerState::STOPPED);
}
void ESP32BLETracker::gap_scan_result_(const esp_ble_gap_cb_param_t::ble_scan_result_evt_param &param) {
ESP_LOGV(TAG, "gap_scan_result - event %d", param.search_evt);
if (param.search_evt == ESP_GAP_SEARCH_INQ_RES_EVT) {
if (xSemaphoreTake(this->scan_result_lock_, 0)) {
if (this->scan_result_index_ < ESP32BLETracker::SCAN_RESULT_BUFFER_SIZE) {
this->scan_result_buffer_[this->scan_result_index_++] = param;
}
xSemaphoreGive(this->scan_result_lock_);
}
} else if (param.search_evt == ESP_GAP_SEARCH_INQ_CMPL_EVT) {
// Scan finished on its own
if (this->scanner_state_ != ScannerState::RUNNING) {
if (this->scanner_state_ == ScannerState::STOPPING) {
ESP_LOGE(TAG, "Scan was not running when scan completed.");
} else if (this->scanner_state_ == ScannerState::STARTING) {
ESP_LOGE(TAG, "Scan was not started when scan completed.");
} else if (this->scanner_state_ == ScannerState::FAILED) {
ESP_LOGE(TAG, "Scan was in failed state when scan completed.");
} else if (this->scanner_state_ == ScannerState::IDLE) {
ESP_LOGE(TAG, "Scan was idle when scan completed.");
} else if (this->scanner_state_ == ScannerState::STOPPED) {
ESP_LOGE(TAG, "Scan was stopped when scan completed.");
}
}
this->set_scanner_state_(ScannerState::STOPPED);
}
}
void ESP32BLETracker::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
esp_ble_gattc_cb_param_t *param) {
for (auto *client : this->clients_) {
@@ -494,13 +493,15 @@ optional<ESPBLEiBeacon> ESPBLEiBeacon::from_manufacturer_data(const ServiceData
return ESPBLEiBeacon(data.data.data());
}
void ESPBTDevice::parse_scan_rst(const esp_ble_gap_cb_param_t::ble_scan_result_evt_param &param) {
this->scan_result_ = param;
void ESPBTDevice::parse_scan_rst(const BLEScanResult &scan_result) {
for (uint8_t i = 0; i < ESP_BD_ADDR_LEN; i++)
this->address_[i] = param.bda[i];
this->address_type_ = param.ble_addr_type;
this->rssi_ = param.rssi;
this->parse_adv_(param);
this->address_[i] = scan_result.bda[i];
this->address_type_ = static_cast<esp_ble_addr_type_t>(scan_result.ble_addr_type);
this->rssi_ = scan_result.rssi;
// Parse advertisement data directly
uint8_t total_len = scan_result.adv_data_len + scan_result.scan_rsp_len;
this->parse_adv_(scan_result.ble_adv, total_len);
#ifdef ESPHOME_LOG_HAS_VERY_VERBOSE
ESP_LOGVV(TAG, "Parse Result:");
@@ -558,13 +559,13 @@ void ESPBTDevice::parse_scan_rst(const esp_ble_gap_cb_param_t::ble_scan_result_e
ESP_LOGVV(TAG, " Data: %s", format_hex_pretty(data.data).c_str());
}
ESP_LOGVV(TAG, " Adv data: %s", format_hex_pretty(param.ble_adv, param.adv_data_len + param.scan_rsp_len).c_str());
ESP_LOGVV(TAG, " Adv data: %s",
format_hex_pretty(scan_result.ble_adv, scan_result.adv_data_len + scan_result.scan_rsp_len).c_str());
#endif
}
void ESPBTDevice::parse_adv_(const esp_ble_gap_cb_param_t::ble_scan_result_evt_param &param) {
void ESPBTDevice::parse_adv_(const uint8_t *payload, uint8_t len) {
size_t offset = 0;
const uint8_t *payload = param.ble_adv;
uint8_t len = param.adv_data_len + param.scan_rsp_len;
while (offset + 2 < len) {
const uint8_t field_length = payload[offset++]; // First byte is length of adv record