add ability for developers to easily avoid locking their flash memory sectors

Makefile.include

@@ -59,6 +59,12 @@ else
 LDSCRIPT  = $(TOP_DIR)/memory.ld
 endif
 
+ifeq ($(MEMORY_PROTECT), 0)
+CFLAGS += -DMEMORY_PROTECT=0
+else
+CFLAGS += -DMEMORY_PROTECT=1
+endif
+
 LDFLAGS  += --static \
             -Wl,--start-group \
             -lc \

memory.c

@@ -27,6 +27,7 @@
 
 void memory_protect(void)
 {
+#if MEMORY_PROTECT
 	// Reference STM32F205 Flash programming manual revision 5 http://www.st.com/resource/en/programming_manual/cd00233952.pdf
 	// Section 2.6 Option bytes
 	//                     set RDP level 2                   WRP for sectors 0 and 1
@@ -45,6 +46,7 @@ void memory_protect(void)
 	//   Bit 0 OPTLOCK: Option lock: ignored by flash_program_option_bytes
 	flash_program_option_bytes(0x0FFCCCEC);
 	flash_lock_option_bytes();
+#endif
 }
 
 int memory_bootloader_hash(uint8_t *hash)