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[esp32_ble] Reduce RAM usage and firmware size by disabling unused GATT functionality (#10862)

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This commit is contained in:
J. Nick Koston
2025-09-25 19:11:13 -05:00
committed by GitHub
parent 250b94d113
commit 2b12ff5874
3 changed files with 49 additions and 0 deletions
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13
esphome/components/esp32_ble/__init__.py
View File

@@ -242,6 +242,19 @@ def final_validation(config):
f"Name '{name}' is too long, maximum length is {max_length} characters"
)
# Set GATT Client/Server sdkconfig options based on which components are loaded
full_config = fv.full_config.get()
# Check if BLE Server is needed
has_ble_server = "esp32_ble_server" in full_config
add_idf_sdkconfig_option("CONFIG_BT_GATTS_ENABLE", has_ble_server)
# Check if BLE Client is needed (via esp32_ble_tracker or esp32_ble_client)
has_ble_client = (
"esp32_ble_tracker" in full_config or "esp32_ble_client" in full_config
)
add_idf_sdkconfig_option("CONFIG_BT_GATTC_ENABLE", has_ble_client)
return config

20
esphome/components/esp32_ble/ble.cpp
View File

@@ -167,6 +167,7 @@ bool ESP32BLE::ble_setup_() {
}
}
#ifdef USE_ESP32_BLE_SERVER
if (!this->gatts_event_handlers_.empty()) {
err = esp_ble_gatts_register_callback(ESP32BLE::gatts_event_handler);
if (err != ESP_OK) {
@@ -174,7 +175,9 @@ bool ESP32BLE::ble_setup_() {
return false;
}
}
#endif
#ifdef USE_ESP32_BLE_CLIENT
if (!this->gattc_event_handlers_.empty()) {
err = esp_ble_gattc_register_callback(ESP32BLE::gattc_event_handler);
if (err != ESP_OK) {
@@ -182,6 +185,7 @@ bool ESP32BLE::ble_setup_() {
return false;
}
}
#endif
std::string name;
if (this->name_.has_value()) {
@@ -303,6 +307,7 @@ void ESP32BLE::loop() {
BLEEvent *ble_event = this->ble_events_.pop();
while (ble_event != nullptr) {
switch (ble_event->type_) {
#ifdef USE_ESP32_BLE_SERVER
case BLEEvent::GATTS: {
esp_gatts_cb_event_t event = ble_event->event_.gatts.gatts_event;
esp_gatt_if_t gatts_if = ble_event->event_.gatts.gatts_if;
@@ -313,6 +318,8 @@ void ESP32BLE::loop() {
}
break;
}
#endif
#ifdef USE_ESP32_BLE_CLIENT
case BLEEvent::GATTC: {
esp_gattc_cb_event_t event = ble_event->event_.gattc.gattc_event;
esp_gatt_if_t gattc_if = ble_event->event_.gattc.gattc_if;
@@ -323,6 +330,7 @@ void ESP32BLE::loop() {
}
break;
}
#endif
case BLEEvent::GAP: {
esp_gap_ble_cb_event_t gap_event = ble_event->event_.gap.gap_event;
switch (gap_event) {
@@ -416,13 +424,17 @@ void load_ble_event(BLEEvent *event, esp_gap_ble_cb_event_t e, esp_ble_gap_cb_pa
event->load_gap_event(e, p);
}
#ifdef USE_ESP32_BLE_CLIENT
void load_ble_event(BLEEvent *event, esp_gattc_cb_event_t e, esp_gatt_if_t i, esp_ble_gattc_cb_param_t *p) {
event->load_gattc_event(e, i, p);
}
#endif
#ifdef USE_ESP32_BLE_SERVER
void load_ble_event(BLEEvent *event, esp_gatts_cb_event_t e, esp_gatt_if_t i, esp_ble_gatts_cb_param_t *p) {
event->load_gatts_event(e, i, p);
}
#endif
template<typename... Args> void enqueue_ble_event(Args... args) {
// Allocate an event from the pool
@@ -443,8 +455,12 @@ template<typename... Args> void enqueue_ble_event(Args... args) {
// Explicit template instantiations for the friend function
template void enqueue_ble_event(esp_gap_ble_cb_event_t, esp_ble_gap_cb_param_t *);
#ifdef USE_ESP32_BLE_SERVER
template void enqueue_ble_event(esp_gatts_cb_event_t, esp_gatt_if_t, esp_ble_gatts_cb_param_t *);
#endif
#ifdef USE_ESP32_BLE_CLIENT
template void enqueue_ble_event(esp_gattc_cb_event_t, esp_gatt_if_t, esp_ble_gattc_cb_param_t *);
#endif
void ESP32BLE::gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) {
switch (event) {
@@ -484,15 +500,19 @@ void ESP32BLE::gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_pa
ESP_LOGW(TAG, "Ignoring unexpected GAP event type: %d", event);
}
#ifdef USE_ESP32_BLE_SERVER
void ESP32BLE::gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if,
esp_ble_gatts_cb_param_t *param) {
enqueue_ble_event(event, gatts_if, param);
}
#endif
#ifdef USE_ESP32_BLE_CLIENT
void ESP32BLE::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
esp_ble_gattc_cb_param_t *param) {
enqueue_ble_event(event, gattc_if, param);
}
#endif
float ESP32BLE::get_setup_priority() const { return setup_priority::BLUETOOTH; }

16
esphome/components/esp32_ble/ble.h
View File

@@ -74,17 +74,21 @@ class GAPScanEventHandler {
virtual void gap_scan_event_handler(const BLEScanResult &scan_result) = 0;
};
#ifdef USE_ESP32_BLE_CLIENT
class GATTcEventHandler {
public:
virtual void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
esp_ble_gattc_cb_param_t *param) = 0;
};
#endif
#ifdef USE_ESP32_BLE_SERVER
class GATTsEventHandler {
public:
virtual void gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if,
esp_ble_gatts_cb_param_t *param) = 0;
};
#endif
class BLEStatusEventHandler {
public:
@@ -123,16 +127,24 @@ class ESP32BLE : public Component {
void register_gap_scan_event_handler(GAPScanEventHandler *handler) {
this->gap_scan_event_handlers_.push_back(handler);
}
#ifdef USE_ESP32_BLE_CLIENT
void register_gattc_event_handler(GATTcEventHandler *handler) { this->gattc_event_handlers_.push_back(handler); }
#endif
#ifdef USE_ESP32_BLE_SERVER
void register_gatts_event_handler(GATTsEventHandler *handler) { this->gatts_event_handlers_.push_back(handler); }
#endif
void register_ble_status_event_handler(BLEStatusEventHandler *handler) {
this->ble_status_event_handlers_.push_back(handler);
}
void set_enable_on_boot(bool enable_on_boot) { this->enable_on_boot_ = enable_on_boot; }
protected:
#ifdef USE_ESP32_BLE_SERVER
static void gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param);
#endif
#ifdef USE_ESP32_BLE_CLIENT
static void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param);
#endif
static void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param);
bool ble_setup_();
@@ -148,8 +160,12 @@ class ESP32BLE : public Component {
// Vectors (12 bytes each on 32-bit, naturally aligned to 4 bytes)
std::vector<GAPEventHandler *> gap_event_handlers_;
std::vector<GAPScanEventHandler *> gap_scan_event_handlers_;
#ifdef USE_ESP32_BLE_CLIENT
std::vector<GATTcEventHandler *> gattc_event_handlers_;
#endif
#ifdef USE_ESP32_BLE_SERVER
std::vector<GATTsEventHandler *> gatts_event_handlers_;
#endif
std::vector<BLEStatusEventHandler *> ble_status_event_handlers_;
// Large objects (size depends on template parameters, but typically aligned to 4 bytes)