Fix STM32 flush of TX (used by UBL) (#16197)

5 years ago · ebdf8b6b1a
1 changed files with 1 additions and 1 deletions
--- a/Marlin/src/core/serial.h
+++ b/Marlin/src/core/serial.h
@ -75,7 +75,7 @@ extern uint8_t marlin_debug_flags;
 #define SERIAL_PRINTF(V...)     SERIAL_OUT(printf, V)
 #define SERIAL_FLUSH()          SERIAL_OUT(flush)

-#ifdef __STM32F1__
+#ifdef ARDUINO_ARCH_STM32
  #define SERIAL_FLUSHTX()      SERIAL_OUT(flush)
 #elif TX_BUFFER_SIZE > 0
  #define SERIAL_FLUSHTX()      SERIAL_OUT(flushTX)