added support for the SAMD_21 chip with no EEPROM using the FlashStorage_SAMD emulated EEPROM library

added disable interrupts on the ESP8266 and ESP32 to avoid a crash during FLASH Write of emulated EEPROM
bumped version to 2.0.14

NmraDcc.cpp

@@ -47,7 +47,11 @@
 //------------------------------------------------------------------------
 
 #include "NmraDcc.h"
+#ifdef __SAMD21G18A__
+#include <FlashStorage_SAMD.h>
+#else
 #include "EEPROM.h"
+#endif
 
 // Uncomment to print DEBUG messages
 // #define DEBUG_PRINT
@@ -804,9 +808,18 @@ uint8_t readEEPROM (unsigned int CV)
 void writeEEPROM (unsigned int CV, uint8_t Value)
 {
     EEPROM.write (CV, Value) ;
+    
+	#if defined(ESP8266) || defined(ESP32)
+	noInterrupts();
+	#endif
+
     #if defined(ESP8266) ||  defined(ESP32) || defined(ARDUINO_ARCH_RP2040)
     EEPROM.commit();
     #endif
+    
+	#if defined(ESP8266) || defined(ESP32)
+	interrupts();
+	#endif
 }
 
 bool readyEEPROM()

NmraDcc.h

@@ -128,7 +128,8 @@ typedef struct
     #define PRIO_SYSTIC     8               // MUST be higher priority than DCC Irq
 #elif defined(ARDUINO_ARCH_RP2040)
     #define MAXCV    256	     				    // todo: maybe somebody knows a good define for it
-
+#elif defined(ARDUINO_SAMD_ZERO) 
+    #define MAXCV    EEPROM_EMULATION_SIZE
 #else
     #define MAXCV    E2END     					// the upper limit of the CV value currently defined to max memory.
 #endif

library.properties

@@ -1,5 +1,5 @@
 name=NmraDcc
-version=2.0.13
+version=2.0.14
 author=Alex Shepherd, Wolfgang Kuffer, Geoff Bunza, Martin Pischky, Franz-Peter Müller, Sven (littleyoda), Hans Tanner, bugfixes by Jueff
 maintainer=Alex Shepherd <kiwi64ajs@gmail.com>
 sentence=Enables NMRA DCC Communication