From 8fcaf8b1ca806b335a1df2021a2f079cbf64726a Mon Sep 17 00:00:00 2001
From: Thomas Basler <thomas@familie-basler.net>
Date: Thu, 14 Apr 2022 11:30:27 +0200
Subject: [PATCH] Added library to get the mcu reset reason

---
 lib/ResetReason/src/ResetReason.cpp | 139 ++++++++++++++++++++++++++++
 lib/ResetReason/src/ResetReason.h   |  11 +++
 2 files changed, 150 insertions(+)
 create mode 100644 lib/ResetReason/src/ResetReason.cpp
 create mode 100644 lib/ResetReason/src/ResetReason.h

diff --git a/lib/ResetReason/src/ResetReason.cpp b/lib/ResetReason/src/ResetReason.cpp
new file mode 100644
index 0000000..ac7b2cb
--- /dev/null
+++ b/lib/ResetReason/src/ResetReason.cpp
@@ -0,0 +1,139 @@
+#include "ResetReason.h"
+
+#if ESP_IDF_VERSION_MAJOR > 3 // IDF 4+
+#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
+#include <esp32/rom/rtc.h>
+#elif CONFIG_IDF_TARGET_ESP32S2
+#include "esp32s2/rom/rtc.h"
+#elif CONFIG_IDF_TARGET_ESP32C3
+#include "esp32c3/rom/rtc.h"
+#elif CONFIG_IDF_TARGET_ESP32S3
+#include "esp32s3/rom/rtc.h"
+#else
+#error Target CONFIG_IDF_TARGET is not supported
+#endif
+#else // ESP32 Before IDF 4.0
+#include "rom/rtc.h"
+#endif
+
+String ResetReasonClass::get_reset_reason_verbose(uint8_t cpu_id)
+{
+    RESET_REASON reason;
+    reason = rtc_get_reset_reason(cpu_id);
+
+    String reason_str;
+
+    switch (reason) {
+    case 1:
+        reason_str = F("Vbat power on reset");
+        break;
+    case 3:
+        reason_str = F("Software reset digital core");
+        break;
+    case 4:
+        reason_str = F("Legacy watch dog reset digital core");
+        break;
+    case 5:
+        reason_str = F("Deep Sleep reset digital core");
+        break;
+    case 6:
+        reason_str = F("Reset by SLC module, reset digital core");
+        break;
+    case 7:
+        reason_str = F("Timer Group0 Watch dog reset digital core");
+        break;
+    case 8:
+        reason_str = F("Timer Group1 Watch dog reset digital core");
+        break;
+    case 9:
+        reason_str = F("RTC Watch dog Reset digital core");
+        break;
+    case 10:
+        reason_str = F("Instrusion tested to reset CPU");
+        break;
+    case 11:
+        reason_str = F("Time Group reset CPU");
+        break;
+    case 12:
+        reason_str = F("Software reset CPU");
+        break;
+    case 13:
+        reason_str = F("RTC Watch dog Reset CPU");
+        break;
+    case 14:
+        reason_str = F("for APP CPU, reseted by PRO CPU");
+        break;
+    case 15:
+        reason_str = F("Reset when the vdd voltage is not stable");
+        break;
+    case 16:
+        reason_str = F("RTC Watch dog reset digital core and rtc module");
+        break;
+    default:
+        reason_str = F("NO_MEAN");
+    }
+
+    return reason_str;
+}
+
+String ResetReasonClass::get_reset_reason_short(uint8_t cpu_id)
+{
+    RESET_REASON reason;
+    reason = rtc_get_reset_reason(cpu_id);
+
+    String reason_str;
+
+    switch (reason) {
+    case 1:
+        reason_str = F("POWERON_RESET");
+        break;
+    case 3:
+        reason_str = F("SW_RESET");
+        break;
+    case 4:
+        reason_str = F("OWDT_RESET");
+        break;
+    case 5:
+        reason_str = F("DEEPSLEEP_RESET");
+        break;
+    case 6:
+        reason_str = F("SDIO_RESET");
+        break;
+    case 7:
+        reason_str = F("TG0WDT_SYS_RESET");
+        break;
+    case 8:
+        reason_str = F("TG1WDT_SYS_RESET");
+        break;
+    case 9:
+        reason_str = F("RTCWDT_SYS_RESET");
+        break;
+    case 10:
+        reason_str = F("INTRUSION_RESET");
+        break;
+    case 11:
+        reason_str = F("TGWDT_CPU_RESET");
+        break;
+    case 12:
+        reason_str = F("SW_CPU_RESET");
+        break;
+    case 13:
+        reason_str = F("RTCWDT_CPU_RESET");
+        break;
+    case 14:
+        reason_str = F("EXT_CPU_RESET");
+        break;
+    case 15:
+        reason_str = F("RTCWDT_BROWN_OUT_RESET");
+        break;
+    case 16:
+        reason_str = F("RTCWDT_RTC_RESET");
+        break;
+    default:
+        reason_str = F("NO_MEAN");
+    }
+
+    return reason_str;
+}
+
+ResetReasonClass ResetReason;
\ No newline at end of file
diff --git a/lib/ResetReason/src/ResetReason.h b/lib/ResetReason/src/ResetReason.h
new file mode 100644
index 0000000..65664eb
--- /dev/null
+++ b/lib/ResetReason/src/ResetReason.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <Arduino.h>
+
+class ResetReasonClass {
+public:
+    String get_reset_reason_verbose(uint8_t cpu_id);
+    String get_reset_reason_short(uint8_t cpu_id);
+};
+
+extern ResetReasonClass ResetReason;
\ No newline at end of file