SPIFFS-backed PersistentStore for ESP32 (#13566)

Marlin/src/HAL/HAL_ESP32/HAL.cpp

@@ -41,7 +41,10 @@
   #endif
   #if ENABLED(WEBSUPPORT)
     #include "web.h"
+    #include "spiffs.h"
   #endif
+#elif ENABLED(EEPROM_SETTINGS)
+  #include "spiffs.h"
 #endif
 
 // --------------------------------------------------------------------------
@@ -95,9 +98,12 @@ void HAL_init(void) {
       OTA_init();
     #endif
     #if ENABLED(WEBSUPPORT)
+      spiffs_init();
       web_init();
     #endif
     server.begin();
+  #elif ENABLED(EEPROM_SETTINGS)
+    spiffs_init();
   #endif
 
   i2s_init();

Marlin/src/HAL/HAL_ESP32/persistent_store_spiffs.cpp

@@ -0,0 +1,93 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(EEPROM_SETTINGS) && DISABLED(FLASH_EEPROM_EMULATION)
+
+#include "../shared/persistent_store_api.h"
+
+#include "SPIFFS.h"
+#include "FS.h"
+#include "spiffs.h"
+
+#define HAL_ESP32_EEPROM_SIZE 4096
+
+File eeprom_file;
+
+bool PersistentStore::access_start() {
+  if (spiffs_initialized) {
+    eeprom_file = SPIFFS.open("/eeprom.dat", "r+");
+
+    size_t file_size = eeprom_file.size();
+    if (file_size < HAL_ESP32_EEPROM_SIZE) {
+      bool write_ok = eeprom_file.seek(file_size);
+
+      while (write_ok && file_size < HAL_ESP32_EEPROM_SIZE) {
+        write_ok = eeprom_file.write(0xFF) == 1;
+        file_size++;
+      }
+    }
+    return true;
+  }
+  return false;
+}
+
+bool PersistentStore::access_finish() {
+  eeprom_file.close();
+  return true;
+}
+
+bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+  if (!eeprom_file.seek(pos)) return true; // return true for any error
+  if (eeprom_file.write(value, size) != size) return true;
+
+  crc16(crc, value, size);
+  pos += size;
+
+  return false;
+}
+
+bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
+  if (!eeprom_file.seek(pos)) return true; // return true for any error
+
+  if (writing) {
+    if (eeprom_file.read(value, size) != size) return true;
+    crc16(crc, value, size);
+  }
+  else {
+    uint8_t tmp[size];
+    if (eeprom_file.read(tmp, size) != size) return true;
+    crc16(crc, tmp, size);
+  }
+
+  pos += size;
+
+  return false;
+}
+
+size_t PersistentStore::capacity() { return HAL_ESP32_EEPROM_SIZE; }
+
+#endif // EEPROM_SETTINGS
+#endif // ARDUINO_ARCH_ESP32

Marlin/src/HAL/HAL_ESP32/spiffs.cpp

@@ -0,0 +1,44 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if EITHER(WEBSUPPORT, EEPROM_SETTINGS)
+
+#include "../../core/serial.h"
+
+#include "FS.h"
+#include "SPIFFS.h"
+
+bool spiffs_initialized;
+
+void spiffs_init() {
+  if (SPIFFS.begin())
+    spiffs_initialized = true;
+  else
+    SERIAL_ECHO_MSG("SPIFFS mount failed");
+}
+
+#endif // WEBSUPPORT
+#endif // ARDUINO_ARCH_ESP32

Marlin/src/HAL/HAL_ESP32/spiffs.h

@@ -0,0 +1,26 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+extern bool spiffs_initialized;
+
+void spiffs_init();

Marlin/src/HAL/HAL_ESP32/web.cpp

@@ -23,9 +23,6 @@
 
 #if ENABLED(WEBSUPPORT)
 
-#include "../../core/serial.h"
-
-#include "FS.h"
 #include "SPIFFS.h"
 #include "wifi.h"
 
@@ -37,12 +34,8 @@ void onNotFound(AsyncWebServerRequest *request){
 
 void web_init() {
   server.addHandler(&events);       // attach AsyncEventSource
-  if (SPIFFS.begin()) {
-    server.serveStatic("/", SPIFFS, "/www").setDefaultFile("index.html");
-    server.onNotFound(onNotFound);
-  }
-  else
-    SERIAL_ECHO_MSG("SPIFFS Mount Failed");
+  server.serveStatic("/", SPIFFS, "/www").setDefaultFile("index.html");
+  server.onNotFound(onNotFound);
 }
 
 #endif // WEBSUPPORT