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Reduce flash by removing rarely-useful register lines

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Remove EPC2/EPC3 (always 0 on LX106, no level 2/3 interrupts) and
DEPC (extremely rare double exception). Combine PC and EXCVADDR into
one log line for exception resets. Shrink hint buffer 256->220.
Saves ~36 bytes flash in crash_handler_log.
This commit is contained in:
J. Nick Koston
2026-04-05 12:38:36 -10:00
parent 9035410fa9
commit 9f008ba487
1 changed files with 6 additions and 14 deletions
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esphome/components/esp8266/crash_handler.cpp
+6 -14
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@@ -212,25 +212,17 @@ void crash_handler_log() {
} else {
ESP_LOGE(TAG, " Reason: %s", LOG_STR_ARG(get_reset_reason(resetInfo.reason)));
}
ESP_LOGE(TAG, " PC: 0x%08" PRIX32 " (fault location)", resetInfo.epc1);
if (resetInfo.epc2 != 0) {
ESP_LOGE(TAG, " EPC2: 0x%08" PRIX32, resetInfo.epc2);
}
if (resetInfo.epc3 != 0) {
ESP_LOGE(TAG, " EPC3: 0x%08" PRIX32, resetInfo.epc3);
}
if (resetInfo.reason == REASON_EXCEPTION_RST) {
// Always log EXCVADDR for exceptions — 0x00000000 IS the diagnostic for null pointer crashes
ESP_LOGE(TAG, " EXCVADDR: 0x%08" PRIX32 " (faulting address)", resetInfo.excvaddr);
}
if (resetInfo.depc != 0) {
ESP_LOGE(TAG, " DEPC: 0x%08" PRIX32 " (double exception)", resetInfo.depc);
// Log PC and EXCVADDR together — 0x00000000 IS the diagnostic for null pointer crashes
ESP_LOGE(TAG, " PC: 0x%08" PRIX32 " EXCVADDR: 0x%08" PRIX32, resetInfo.epc1, resetInfo.excvaddr);
} else {
ESP_LOGE(TAG, " PC: 0x%08" PRIX32, resetInfo.epc1);
}
for (uint8_t i = 0; i < bt_count; i++) {
ESP_LOGE(TAG, " BT%d: 0x%08" PRIX32 " (backtrace)", i, backtrace[i]);
ESP_LOGE(TAG, " BT%d: 0x%08" PRIX32, i, backtrace[i]);
}
// Build addr2line hint with all captured addresses for easy copy-paste
char hint[256];
char hint[220];
size_t pos =
buf_append_printf(hint, sizeof(hint), 0, "Use: addr2line -pfiaC -e firmware.elf 0x%08" PRIX32, resetInfo.epc1);
for (uint8_t i = 0; i < bt_count; i++) {