fix buffer and block size

Author: ficeto

hardware/esp8266com/esp8266/cores/esp8266/Esp.cpp

@@ -175,6 +175,12 @@ uint32_t EspClass::getFlashChipSize(void)
                 return (2_MB);
             case 0x4: // 32 MBit (4MB)
                 return (4_MB);
+            case 0x5: // 64 MBit (8MB)
+                return (8_MB);
+            case 0x6: // 128 MBit (16MB)
+                return (16_MB);
+            case 0x7: // 256 MBit (32MB)
+                return (32_MB);
             default: // fail?
                 return 0;
         }

hardware/esp8266com/esp8266/cores/esp8266/FileSystem.cpp

@@ -23,7 +23,7 @@
 #include "spiffs/spiffs_esp8266.h"
 
 #define LOGICAL_PAGE_SIZE       256
-#define LOGICAL_BLOCK_SIZE      512
+#define LOGICAL_BLOCK_SIZE      (INTERNAL_FLASH_SECTOR_SIZE * 1)
 
 
 // These addresses are defined in the linker script.
@@ -64,7 +64,7 @@ int FSClass::_mountInternal(){
 
   SPIFFS_API_DBG_V("FSClass::_mountInternal: start:%x, size:%d Kb\n", cfg.phys_addr, cfg.phys_size / 1024);
 
-  _work.reset(new uint8_t[LOGICAL_BLOCK_SIZE]);
+  _work.reset(new uint8_t[2*LOGICAL_PAGE_SIZE]);
   _fdsSize = 32 * _maxOpenFiles;
   _fds.reset(new uint8_t[_fdsSize]);
   _cacheSize = (32 + LOGICAL_PAGE_SIZE) * _maxOpenFiles;