better io file arrangement - Makefile gives more flexibility than relative path from .cpp file (#30)

Co-authored-by: rusefillc <sdfsdfqsf2334234234>

firmware/Makefile

@@ -152,7 +152,7 @@ ASMSRC = $(ALLASMSRC)
 ASMXSRC = $(ALLXASMSRC)
 
 # Inclusion directories.
-INCDIR = $(CONFDIR) $(ALLINC) $(TESTINC) boards/
+INCDIR = $(CONFDIR) $(ALLINC) boards/ $(BOARDDIR)/io/
 
 # Define C warning options here.
 CWARN = -Wall -Wextra -Wundef -Wstrict-prototypes

firmware/boards/f0_module/bootloader/Makefile

@@ -128,7 +128,8 @@ ASMSRC = $(ALLASMSRC)
 ASMXSRC = $(ALLXASMSRC)
 
 # Inclusion directories.
-INCDIR = $(CONFDIR) $(ALLINC) $(TESTINC) $(SRCDIR)/shared/
+INCDIR = $(CONFDIR) $(ALLINC) $(SRCDIR)/shared/ \
+  ../io
 
 # Define C warning options here.
 CWARN = -Wall -Wextra -Wundef -Wstrict-prototypes

firmware/boards/f0_module/bootloader/bootloader.cpp

@@ -2,7 +2,7 @@
 #include "hal.h"
 
 #include "flash.h"
-#include "../io_pins.h"
+#include "io_pins.h"
 
 #include <cstring>