- added support for ATMega1284P

diff --git a/Marlin/fastio.h b/Marlin/fastio.h
index 5188a0681a2fd3beeeecb30f5abc1cf1badd8a27..cc3393e96842e139088d28a90d379049c40a7528 100644 (file)
--- a/Marlin/fastio.h
+++ b/Marlin/fastio.h
@@ -424,7 +424,7 @@ pins
 #define PD7_PWM                        NULL
 #endif /*      _AVR_ATmega{168,328,328P}__ */
 
-#if defined (__AVR_ATmega644__) || defined (__AVR_ATmega644P__) || defined (__AVR_ATmega644PA__)
+#if defined (__AVR_ATmega644__) || defined (__AVR_ATmega644P__) || defined (__AVR_ATmega644PA__) || defined (__AVR_ATmega1284P__)
 // UART
 #define        RXD                                     DIO8
 #define        TXD                                     DIO9