Hi, I was trying to use the USB in LPC54628. I tried the generic HID example and it works. However I Used the SDK with my code but it is not working as expected. I used the analyzer. and it show that the host can get all the descriptor with no issue at all. But when the host ask for HID report Descriptor, the micro return Nak and it is time out. I attached photo and marked the important two parts. One where it successfully get configuration descriptor. the other marked one is when it failed to get the HID report descriptor
there is a switch case: with all the descriptor, however it does not go inside the case for HID report, when I was debugging
I traced the called functions when it enter switch case(when it trying to get any other descriptor except HID) for the working example, and my code where I use SDK. all the called functions in my code look identical to the working example. I attached a photo for all the called function since usb interrupt.
not sure what is wrong. any help is really appreciated. Thanks very much!
