Test USART reading

Makefile

@@ -8,6 +8,8 @@
 # GENERAL SETTINGS
 # ==============================================================================
 
+# NOTE: System clock frequency should be a multiple of 1.8432MHz for USART.
+
 SRCDIR    := src
 BINDIR    := bin
 TMPDIR    := $(BINDIR)/build
@@ -17,6 +19,7 @@ LOGFILE   := $(BINDIR)/core.log
 
 VERBOSE   := false
 ARCH      := m32
+#FREQ     := 7372800UL
 FREQ      := 8000000UL
 MCU       := atmega32a
 ASP       := usbasp