Better README with new functioinnality

Author: Clément Léger

README.md

@@ -6,21 +6,30 @@ This work is absolutely **not related** to cypress in any way.
 ## Introduction
 
 This repository holds an attempt to port some tools of cypress under Linux.
-The host bootloader has been replicating using cypress source code for host bootloader.
+It allows to compile and upload application to some cypress boards.
 It has only been successfully tested with a CY8CKIT-049 42xx kit.
 (http://www.cypress.com/documentation/development-kitsboards/psoc-4-cy8ckit-049-4xxx-prototyping-kits)
 
 The prerequisites are the following:
    - `gengetopt`
    - `make`
+   - `wine` (to run cyelftool when using makefile)
+   - An arm toolchain (arm-none-eabi-)
+
+In order to build and install these utilities:
 
+```
+make all
+sudo make install
+```
 
 ## Host bootloader
 
+The host bootloader has been replicating using cypress source code for host bootloader.
 The Cypress Host Bootloader Tool is available as a command line utility and support various command
 To build it, the `make` command should be sufficient.
 
-## Usage
+### Usage
 
 ```
   -h, --help           Print help and exit
@@ -37,3 +46,50 @@ To build it, the `make` command should be sufficient.
   -e, --erase          Erase memory
   -v, --verify         Verify file
 ```
+
+## iHex to cyacd format
+
+Thanks from https://github.com/gv1/hex2cyacd, the format is well explained and it was possible to write a C tool.
+ihex2cyacd is a an utility to create cyacd files from ihex files.
+In order to use it, the simplest way is to use it
+
+### Usage
+
+```
+
+  -h, --help                 Print help and exit
+  -V, --version              Print version and exit
+  -i, --input=STRING         Input ihex file
+  -b, --bootloader_size=INT  Bootloader text size file
+  -o, --output=STRING        Output cyacd file
+  -c, --cpu=ENUM             CPU type  (possible values="CY8C41", "CY8C42"
+                               default=`CY8C42')
+```
+
+## Makefiles
+
+A Makefile.cypress file is available in the repository in order to easily compile cydsn projects.
+Two variable are required to be set which are PSOC_CREATOR_DIR and PROJECT_DIR.
+The easiest way to use it is to create a Makefile with the following content
+
+```
+PSOC_CREATOR_DIR := Path_to_PSoC_Creator
+PROJECT_DIR := Path_to_project.cydsn
+
+include Makefile.cypress
+
+```
+
+Then type `make` to compile the application.
+Note that some old generated files may be outdated and can't compile.
+This typically happens when you change the name of a PSoC component and rebuild the application.
+Simply remove these files in order to compile again.
+
+The output files will be in the `build` directory.
+The final cyacd file can be flashed using `cyhostboot`.
+
+
+## Notes
+
+The `cyelftool` cypress utility has not yet been reversed.
+However thanks to wine, this utility can be used and