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[esp32_ble_client] Use FAST connection parameters for all v3 connections (#10052)

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This commit is contained in:
J. Nick Koston
2025-08-03 19:12:06 -10:00
committed by GitHub
parent 7c297366c7
commit 989058e6a9
1 changed files with 9 additions and 7 deletions
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16
esphome/components/esp32_ble_client/ble_client_base.cpp
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@@ -16,8 +16,8 @@ static const char *const TAG = "esp32_ble_client";
// Intermediate connection parameters for standard operation
// ESP-IDF defaults (12.5-15ms) are too slow for stable connections through WiFi-based BLE proxies,
// causing disconnections. These medium parameters balance responsiveness with bandwidth usage.
static const uint16_t MEDIUM_MIN_CONN_INTERVAL = 0x08; // 8 * 1.25ms = 10ms
static const uint16_t MEDIUM_MAX_CONN_INTERVAL = 0x0A; // 10 * 1.25ms = 12.5ms
static const uint16_t MEDIUM_MIN_CONN_INTERVAL = 0x07; // 7 * 1.25ms = 8.75ms
static const uint16_t MEDIUM_MAX_CONN_INTERVAL = 0x09; // 9 * 1.25ms = 11.25ms
// The timeout value was increased from 6s to 8s to address stability issues observed
// in certain BLE devices when operating through WiFi-based BLE proxies. The longer
// timeout reduces the likelihood of disconnections during periods of high latency.
@@ -157,12 +157,13 @@ void BLEClientBase::connect() {
this->set_state(espbt::ClientState::CONNECTING);
// Always set connection parameters to ensure stable operation
// Use FAST for V3_WITHOUT_CACHE (devices that need lowest latency)
// Use MEDIUM for all other connections (balanced performance)
// Use FAST for all V3 connections (better latency and reliability)
// Use MEDIUM for V1/legacy connections (balanced performance)
uint16_t min_interval, max_interval, timeout;
const char *param_type;
if (this->connection_type_ == espbt::ConnectionType::V3_WITHOUT_CACHE) {
if (this->connection_type_ == espbt::ConnectionType::V3_WITHOUT_CACHE ||
this->connection_type_ == espbt::ConnectionType::V3_WITH_CACHE) {
min_interval = FAST_MIN_CONN_INTERVAL;
max_interval = FAST_MAX_CONN_INTERVAL;
timeout = FAST_CONN_TIMEOUT;
@@ -411,9 +412,10 @@ bool BLEClientBase::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_
}
ESP_LOGI(TAG, "[%d] [%s] Service discovery complete", this->connection_index_, this->address_str_.c_str());
// For non-cached connections, restore to medium connection parameters after service discovery
// For V3 connections, restore to medium connection parameters after service discovery
// This balances performance with bandwidth usage after the critical discovery phase
if (this->connection_type_ == espbt::ConnectionType::V3_WITHOUT_CACHE) {
if (this->connection_type_ == espbt::ConnectionType::V3_WITHOUT_CACHE ||
this->connection_type_ == espbt::ConnectionType::V3_WITH_CACHE) {
esp_ble_conn_update_params_t conn_params = {{0}};
memcpy(conn_params.bda, this->remote_bda_, sizeof(esp_bd_addr_t));
conn_params.min_int = MEDIUM_MIN_CONN_INTERVAL;