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[debug] Check reboot source pref on ESP_RST_WDT and guard against empty source (#17537)

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This commit is contained in:
Davide D M
2026-09-09 09:54:41 +12:00
committed by Jesse Hills
parent 199acdf522
commit 442e4a1ec2
1 changed files with 6 additions and 2 deletions
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esphome/components/debug/debug_esp32.cpp
+6 -2
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@@ -66,11 +66,15 @@ const char *DebugComponent::get_reset_reason_(std::span<char, RESET_REASON_BUFFE
unsigned reason = esp_reset_reason();
if (reason < sizeof(RESET_REASONS) / sizeof(RESET_REASONS[0])) {
if (reason == ESP_RST_SW) {
if (reason == ESP_RST_SW || reason == ESP_RST_WDT) {
// On some ESP32-S3 configurations (e.g. SPIRAM with fetch-instructions/rodata),
// esp_restart() intermittently produces RTCWDT_RTC_RST (ESP_RST_WDT) instead of
// ESP_RST_SW. Check the stored reboot source for both reset reasons so a software
// reboot that ends up as WDT still reports the correct source.
auto pref = global_preferences->make_preference(REBOOT_MAX_LEN,
fnv1_hash_extend(fnv1_hash(REBOOT_KEY), App.get_name().c_str()));
char reboot_source[REBOOT_MAX_LEN]{};
if (pref.load(&reboot_source)) {
if (pref.load(&reboot_source) && reboot_source[0] != '\0') {
reboot_source[REBOOT_MAX_LEN - 1] = '\0';
snprintf(buf, size, "Reboot request from %s", reboot_source);
} else {