Mostly Working MP3 Player (VS1053) and HID Problems

In the last week I have made good progress on the VS1053/1063 MP3 Harmony style driver.  I am talking to it, have completed the software initialization and load the patches.  The next step is to implement the player.  At first this is going to be direct processor control.  Eventually down the road, I will convert to DMA, but I need working software first.  Once I am finished with this I will publish the driver here and on the Microchip Forums so other people can get head start on implementing a hardware version of an MP3 player.

For the next step of getting the player to actually work, I need to bring the file system on line and temporarily disconnect the USB MSD (for now).  So to do this I decided to use the HID interface and the PC program I have.  When I last looked at this, Windows had recognized the HID device, the generic HID test I have could read all the configuration data.  My PC program saw it was connected and would send a message.  Some crazy output started, but I had seen that before when the PC and the HID device got into a loop of not recognizing the data they were sending.  So I moved on to the MP3 driver because I thought that was more important.

Well there was more to it.  There always is.  The HID events are not firing after the first one.  I went back to the simple HID test program I did and it works as expected.  The HID events fire and data moves between them.  So the first thought is the MSD portion is getting in the way somehow.  The MSD works fine.  I have compared the HID test program and the HID_MSD program I am now testing and cannot find a difference.  I may have to start from scratch again, except build the HID interface fist and then add the MSD.  Not sure what I am going to do yet, but the next few days are going to be interesting.