From 28ea39cf053d1069b698a7ac57f0eb6def82cb48 Mon Sep 17 00:00:00 2001
From: me-no-dev <hristo@espressif.com>
Date: Fri, 28 Dec 2018 21:14:46 +0200
Subject: [PATCH] Add WDT API for Core 0 and disable it while SPIFFS is
 formatting

---
 cores/esp32/esp32-hal-misc.c    | 16 +++++++++++++++-
 cores/esp32/esp32-hal.h         |  7 +++++--
 libraries/SPIFFS/src/SPIFFS.cpp | 11 +++++++++--
 3 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/cores/esp32/esp32-hal-misc.c b/cores/esp32/esp32-hal-misc.c
index 0ebb3726..3a22346b 100644
--- a/cores/esp32/esp32-hal-misc.c
+++ b/cores/esp32/esp32-hal-misc.c
@@ -70,7 +70,21 @@ void disableLoopWDT(){
 }
 #endif
 
-#ifndef CONFIG_TASK_WDT_CHECK_IDLE_TASK_CPU1
+void enableCore0WDT(){
+    TaskHandle_t idle_0 = xTaskGetIdleTaskHandleForCPU(0);
+    if(idle_0 == NULL || esp_task_wdt_add(idle_0) != ESP_OK){
+        log_e("Failed to add Core 0 IDLE task to WDT");
+    }
+}
+
+void disableCore0WDT(){
+    TaskHandle_t idle_0 = xTaskGetIdleTaskHandleForCPU(0);
+    if(idle_0 == NULL || esp_task_wdt_delete(idle_0) != ESP_OK){
+        log_e("Failed to remove Core 0 IDLE task from WDT");
+    }
+}
+
+#ifndef CONFIG_FREERTOS_UNICORE
 void enableCore1WDT(){
     TaskHandle_t idle_1 = xTaskGetIdleTaskHandleForCPU(1);
     if(idle_1 == NULL || esp_task_wdt_add(idle_1) != ESP_OK){
diff --git a/cores/esp32/esp32-hal.h b/cores/esp32/esp32-hal.h
index 7cb44519..33595efd 100644
--- a/cores/esp32/esp32-hal.h
+++ b/cores/esp32/esp32-hal.h
@@ -78,8 +78,11 @@ void enableLoopWDT();
 void disableLoopWDT();
 #endif
 
-#ifndef CONFIG_TASK_WDT_CHECK_IDLE_TASK_CPU1
-//enable/disable WDT for the IDLE task on Core 1
+//enable/disable WDT for the IDLE task on Core 0 (SYSTEM)
+void enableCore0WDT();
+void disableCore0WDT();
+#ifndef CONFIG_FREERTOS_UNICORE
+//enable/disable WDT for the IDLE task on Core 1 (Arduino)
 void enableCore1WDT();
 void disableCore1WDT();
 #endif
diff --git a/libraries/SPIFFS/src/SPIFFS.cpp b/libraries/SPIFFS/src/SPIFFS.cpp
index adc9148a..8dcded32 100644
--- a/libraries/SPIFFS/src/SPIFFS.cpp
+++ b/libraries/SPIFFS/src/SPIFFS.cpp
@@ -39,11 +39,16 @@ bool SPIFFSFS::begin(bool formatOnFail, const char * basePath, uint8_t maxOpenFi
       .base_path = basePath,
       .partition_label = NULL,
       .max_files = maxOpenFiles,
-      .format_if_mount_failed = formatOnFail
+      .format_if_mount_failed = false
     };
 
     esp_err_t err = esp_vfs_spiffs_register(&conf);
-    if(err){
+    if(err == ESP_FAIL && formatOnFail){
+        if(format()){
+            err = esp_vfs_spiffs_register(&conf);
+        }
+    }
+    if(err != ESP_OK){
         log_e("Mounting SPIFFS failed! Error: %d", err);
         return false;
     }
@@ -65,7 +70,9 @@ void SPIFFSFS::end()
 
 bool SPIFFSFS::format()
 {
+    disableCore0WDT();
     esp_err_t err = esp_spiffs_format(NULL);
+    enableCore0WDT();
     if(err){
         log_e("Formatting SPIFFS failed! Error: %d", err);
         return false;