Posted on July 01, 2014 at 18:04Ok, but you need to understand the difference between the broad discussion about what your whole project needs to do, and the far narrower discussion about what your ''problem'' is, and why it's not detecting the USB Flash drive, if that is in fact what the problem is.
So you need to break down the project into smaller pieces, and understand how those pieces work, how they might be fashioned to your particular use case, and integrated into your larger project.
I have suggested looking at the FW Update example because it includes several key features you'll need. It provides a USB driver that talks to the Flash Drive, and integration layer to read/write on to the media, and a File System to manage the creation and access of the files, which is compatible with a PC OS that you might subsequently attach the USB Flash Drive.
The task for you is to understand the mechanics of what the example is doing now, strip out the firmware reading/upgrading functionality, and add some experimental code that writes some arbitrary data to a file. Once you have THAT working, then you need to look at porting it to your large application, or porting that functionality into the framework you've just created for yourself.
