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[esp32][wifi] Fix bootloop and WiFi connection issue if nvs partition is missing or has non-default label (#16025)

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Co-authored-by: J. Nick Koston <nick@home-assistant.io>
This commit is contained in:
Mat931
2026-04-27 17:41:28 +00:00
committed by Jesse Hills
parent 433bbdb016
commit aea88aef5e
2 changed files with 21 additions and 2 deletions
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esphome/components/esp32/preferences.cpp
+17 -1
View File
@@ -22,6 +22,12 @@ struct NVSData {
static std::vector<NVSData> s_pending_save; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
// open() runs from app_main() before the logger is initialized, so any failure
// must be deferred until after global_logger is set. This is emitted from the
// first make_preference() call, which runs from the generated setup() after
// log->pre_setup() has run at EARLY_INIT priority.
static esp_err_t s_open_err = ESP_OK; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
bool ESP32PreferenceBackend::save(const uint8_t *data, size_t len) {
// try find in pending saves and update that
for (auto &obj : s_pending_save) {
@@ -74,12 +80,14 @@ bool ESP32PreferenceBackend::load(uint8_t *data, size_t len) {
}
void ESP32Preferences::open() {
// Runs from app_main() before the logger is initialized; any logging here
// must be deferred. See s_open_err and make_preference() below.
nvs_flash_init();
esp_err_t err = nvs_open("esphome", NVS_READWRITE, &this->nvs_handle);
if (err == 0)
return;
ESP_LOGW(TAG, "nvs_open failed: %s - erasing NVS", esp_err_to_name(err));
s_open_err = err;
nvs_flash_deinit();
nvs_flash_erase();
nvs_flash_init();
@@ -91,6 +99,14 @@ void ESP32Preferences::open() {
}
ESPPreferenceObject ESP32Preferences::make_preference(size_t length, uint32_t type) {
if (s_open_err != ESP_OK) {
if (this->nvs_handle == 0) {
ESP_LOGW(TAG, "nvs_open failed: %s - NVS unavailable", esp_err_to_name(s_open_err));
} else {
ESP_LOGW(TAG, "nvs_open failed: %s - erased NVS", esp_err_to_name(s_open_err));
}
s_open_err = ESP_OK;
}
auto *pref = new ESP32PreferenceBackend(); // NOLINT(cppcoreguidelines-owning-memory)
pref->nvs_handle = this->nvs_handle;
pref->key = type;
esphome/components/wifi/wifi_component_esp_idf.cpp
+4 -1
View File
@@ -179,7 +179,10 @@ void WiFiComponent::wifi_pre_setup_() {
#endif // USE_WIFI_AP
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
// cfg.nvs_enable = false;
if (global_preferences->nvs_handle == 0) {
ESP_LOGW(TAG, "starting wifi without nvs");
cfg.nvs_enable = false;
}
err = esp_wifi_init(&cfg);
if (err != ERR_OK) {
ESP_LOGE(TAG, "esp_wifi_init failed: %s", esp_err_to_name(err));