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[esp32_ble] Store device name in flash to reduce RAM usage

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This commit is contained in:
J. Nick Koston
2025-11-23 20:56:27 -06:00
parent 531af6a277
commit 1e886b8885
1 changed files with 13 additions and 8 deletions
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21
esphome/components/esp32_ble/ble.cpp
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@@ -256,7 +256,9 @@ bool ESP32BLE::ble_setup_() {
}
#endif
std::string name;
const char *device_name;
std::string name_with_suffix;
if (this->name_ != nullptr) {
if (App.is_name_add_mac_suffix_enabled()) {
// MAC address suffix length (last 6 characters of 12-char MAC address string)
@@ -264,23 +266,26 @@ bool ESP32BLE::ble_setup_() {
char mac_addr[13];
get_mac_address_into_buffer(mac_addr);
const char *mac_suffix_ptr = mac_addr + mac_address_suffix_len;
name = make_name_with_suffix(this->name_, strlen(this->name_), '-', mac_suffix_ptr, mac_address_suffix_len);
name_with_suffix =
make_name_with_suffix(this->name_, strlen(this->name_), '-', mac_suffix_ptr, mac_address_suffix_len);
device_name = name_with_suffix.c_str();
} else {
name = this->name_;
device_name = this->name_;
}
} else {
name = App.get_name();
if (name.length() > 20) {
name_with_suffix = App.get_name();
if (name_with_suffix.length() > 20) {
if (App.is_name_add_mac_suffix_enabled()) {
// Keep first 13 chars and last 7 chars (MAC suffix), remove middle
name.erase(13, name.length() - 20);
name_with_suffix.erase(13, name_with_suffix.length() - 20);
} else {
name.resize(20);
name_with_suffix.resize(20);
}
}
device_name = name_with_suffix.c_str();
}
err = esp_ble_gap_set_device_name(name.c_str());
err = esp_ble_gap_set_device_name(device_name);
if (err != ESP_OK) {
ESP_LOGE(TAG, "esp_ble_gap_set_device_name failed: %d", err);
return false;