diff --git a/Firmware/MarlinSerial.cpp b/Firmware/MarlinSerial.cpp index a879b0648..449cf077b 100644 --- a/Firmware/MarlinSerial.cpp +++ b/Firmware/MarlinSerial.cpp @@ -67,6 +67,8 @@ FORCE_INLINE void store_char(unsigned char c) #ifndef SNMM SIGNAL(USART2_RX_vect) { + SERIAL_ECHOPGM("Debug:"); + MYSERIAL.println(1); if (selectedSerialPort == 1) { // Test for a framing error. if (UCSR2A & (1<