From 76d8416a41e16ad8cf577c7d6744d08cc83cd679 Mon Sep 17 00:00:00 2001
From: Kai Lauterbach <klaute@gmx.de>
Date: Thu, 12 Jan 2023 20:21:34 +0100
Subject: [PATCH] Added eeprom emulation to store reset info

---
 firmware/config.h      |  2 +-
 firmware/datastore.ino | 20 ++++++++++++++++++++
 firmware/firmware.ino  | 25 +++++++++++++++++++++++--
 3 files changed, 44 insertions(+), 3 deletions(-)
 create mode 100644 firmware/datastore.ino

diff --git a/firmware/config.h b/firmware/config.h
index 1899885..f02b78e 100644
--- a/firmware/config.h
+++ b/firmware/config.h
@@ -46,6 +46,6 @@
 
 #define SERIAL_BAUD_RATE 115200
 
-#define WEB_UPDATER_HTTP_PORT  8080
+#define WEB_UPDATER_HTTP_PORT 8080
 
 #endif
diff --git a/firmware/datastore.ino b/firmware/datastore.ino
new file mode 100644
index 0000000..f6e9320
--- /dev/null
+++ b/firmware/datastore.ino
@@ -0,0 +1,20 @@
+
+#include <EEPROM.h>
+
+#define EEPROM_SIZE 512
+
+int eeprom_read(int addr) {
+  int ret = -255;
+  EEPROM.begin(EEPROM_SIZE);
+  EEPROM.get(addr, ret);
+  EEPROM.commit();
+  EEPROM.end();
+  return ret;
+}
+
+void eeprom_write(int addr, int data) {
+  EEPROM.begin(EEPROM_SIZE);
+  EEPROM.put(addr, data);
+  EEPROM.commit();
+  EEPROM.end();
+}
diff --git a/firmware/firmware.ino b/firmware/firmware.ino
index e412213..d99ac1d 100644
--- a/firmware/firmware.ino
+++ b/firmware/firmware.ino
@@ -4,7 +4,7 @@
 #include <ESP8266WiFiType.h>
 
 #include <esp.h>
-
+#include <user_interface.h>
 #include <WiFiClient.h>  // WiFiClient
 
 // Project includes
@@ -84,10 +84,14 @@ void setup() {
   //wdt_disable();
 #endif
 
-#if defined(DEBUG) || defined(SERIAL_FEATURE)
+#if defined(DEBUG) || defined(SERIAL_FEATURE) || defined(DEBUG_RESET_REASON)
   Serial.begin(SERIAL_BAUD_RATE);
 #endif
 
+#ifdef DEBUG_RESET_REASON
+  debugResetReason();
+#endif
+
   // Pin settings
   pinMode(BAT_CHARGED_PIN, INPUT);
   pinMode(BAT_CHARGING_PIN, INPUT);
@@ -783,3 +787,20 @@ void http_call_send_json_data()
 }
 
 #endif
+
+#ifdef DEBUG_RESET_REASON
+void debugResetReason() {
+
+  rst_info *resetInfo;
+
+  // 1. read eeprom reset reason
+  //int eep_reset_reason = eeprom_read(0);
+  //debug("EEPROM reset reason " + String(eep_reset_reason));
+
+  // 2. read real reset reason
+  int reset_reason = resetInfo->reason;
+
+  debug("New reset reason " + String(reset_reason));
+  //eeprom_write(0, reset_reason);
+}
+#endif