Hi @elsaam2y, I don’t know if you can find it helpful but there are a couple of projects on GitHub that you may be able to use as starting point:
Also I found this that should be more up-to-date:
Keep in mind though that this should be taken as only starting point as most likely you’ll need to adapt the steps to suit your needs.
May I ask you on what board specifically are you workin on? If you can tell us the architecture we might be able to provide a little more help.