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Code Issues Releases Wiki Activity

Add BLE scan parameters (#769)

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* Add BLE parameters

Fixes https://github.com/esphome/issues/issues/735

* Fix
This commit is contained in:
Otto Winter
2019-10-18 18:15:53 +02:00
committed by GitHub
parent aebb6d2fcc
commit 4310c14497
5 changed files with 53 additions and 19 deletions
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21
esphome/components/esp32_ble_tracker/esp32_ble_tracker.cpp
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@@ -150,21 +150,16 @@ void ESP32BLETracker::start_scan(bool first) {
listener->on_scan_end();
}
this->already_discovered_.clear();
this->scan_params_.scan_type = BLE_SCAN_TYPE_ACTIVE;
this->scan_params_.scan_type = this->scan_active_ ? BLE_SCAN_TYPE_ACTIVE : BLE_SCAN_TYPE_PASSIVE;
this->scan_params_.own_addr_type = BLE_ADDR_TYPE_PUBLIC;
this->scan_params_.scan_filter_policy = BLE_SCAN_FILTER_ALLOW_ALL;
// Values determined empirically, higher scan intervals and lower scan windows make the ESP more stable
// Ideally, these values should both be quite low, especially scan window. 0x10/0x10 is the esp-idf
// default and works quite well. 0x100/0x50 discovers a few less BLE broadcast packets but is a lot
// more stable (order of several hours). The old ESPHome default (1600/1600) was terrible with
// crashes every few minutes
this->scan_params_.scan_interval = 0x200;
this->scan_params_.scan_window = 0x30;
this->scan_params_.scan_interval = this->scan_interval_;
this->scan_params_.scan_window = this->scan_window_;
esp_ble_gap_set_scan_params(&this->scan_params_);
esp_ble_gap_start_scanning(this->scan_interval_);
esp_ble_gap_start_scanning(this->scan_duration_);
this->set_timeout("scan", this->scan_interval_ * 2000, []() {
this->set_timeout("scan", this->scan_duration_ * 2000, []() {
ESP_LOGW(TAG, "ESP-IDF BLE scan never terminated, rebooting to restore BLE stack...");
App.reboot();
});
@@ -454,10 +449,12 @@ const std::string &ESPBTDevice::get_manufacturer_data() const { return this->man
const std::string &ESPBTDevice::get_service_data() const { return this->service_data_; }
const optional<ESPBTUUID> &ESPBTDevice::get_service_data_uuid() const { return this->service_data_uuid_; }
void ESP32BLETracker::set_scan_interval(uint32_t scan_interval) { this->scan_interval_ = scan_interval; }
void ESP32BLETracker::dump_config() {
ESP_LOGCONFIG(TAG, "BLE Tracker:");
ESP_LOGCONFIG(TAG, " Scan Interval: %u s", this->scan_interval_);
ESP_LOGCONFIG(TAG, " Scan Duration: %u s", this->scan_duration_);
ESP_LOGCONFIG(TAG, " Scan Interval: %u ms", this->scan_interval_);
ESP_LOGCONFIG(TAG, " Scan Window: %u ms", this->scan_window_);
ESP_LOGCONFIG(TAG, " Scan Type: %s", this->scan_active_ ? "ACTIVE" : "PASSIVE");
}
void ESP32BLETracker::print_bt_device_info(const ESPBTDevice &device) {
const uint64_t address = device.address_uint64();