added dx1elf2dfu utility

Author: majbthrd

README.md

@@ -9,12 +9,20 @@ It is a much more space efficient alternative to the 4kB Atmel/Microchip [AN_423
 
 ## Usage
 
-Downloading can be accomplished with the existing [dfu-util](http://dfu-util.sourceforge.net/) utilities:
+Downloading can be accomplished with the existing [dfu-util](http://dfu-util.sourceforge.net/) utilities.
+
+Downloading a raw binary file looks like this:
 
 ```
 dfu-util -D write.bin
 ```
 
+or by using the provided dx1elf2dfu utility, one can create a .dfu file to be downloaded:
+
+```
+dfu-util -D write.dfu
+```
+
 ## Specifics
 
 The linker memory map of the user application must be modified to have an origin at 0x0000_0400 rather than at 0x0000_0000.  This bootloader resides at 0x0000_0000.

dx1elf2dfu/Makefile

@@ -0,0 +1,14 @@
+ifeq ($(OS),Windows_NT)
+	EXE_SUFFIX = .exe
+endif
+
+DX1ELF2DFU_C = dx1elf2dfu.c
+
+all: dx1elf2dfu$(EXE_SUFFIX)
+
+dx1elf2dfu$(EXE_SUFFIX): Makefile $(DX1ELF2DFU_C)
+	gcc $(DX1ELF2DFU_C) -o $@ $(CFLAGS)
+	strip $@
+
+clean:
+	rm -f dx1elf2dfu$(EXE_SUFFIX)

dx1elf2dfu/README.md

@@ -0,0 +1,11 @@
+dx1elf2dfu
+==========
+
+This tool is a possible aid for developers who use the Dx1bootloader and want to generate a DFU image directly from a Dx1 ELF object file.
+
+## Sample Usage
+
+```
+dx1elf2dfu myapp.elf myapp.dfu
+```
+