some refactoring,

minor code changes
added a small class for SNESController reading

Platforms.h

@@ -9,9 +9,11 @@
 #define WROOM32_DEVKIT			32
 #define TTGO					33
 
+#define TEENSY_41				41
 
 #define ESP8266		(PLATFORM == WEMOS_D1_MINI) || (PLATFORM == NODE_MCU)
 #define ESP32		(PLATFORM == WROOM32_DEVKIT) || (PLATFORM == TTGO)
+#define TEENSY		(PLATFORM == TEENSY_41)
 
 #ifndef PLATFORM
 	#error "PLATFORM compile time variable not defined"
@@ -29,9 +31,13 @@
 	#define DELAY_US(us)		os_delay_us(us)
 	#define IN_FLASH			ICACHE_FLASH_ATTR
 	
+#elif (TEENSY)
+
+	#pragma message "Using Teensy"
+
 #else
 
-	#error "unsupported platform";
+	#error "Platforms.h: unsupported platform";
 	
 #endif