I'm trying to get a very basic USB implementation up and running. I intend on just doing some basic vendor-specific transfers but at the moment I can't seem to get the USB device to enumerate for more than a few fractions of a second.
My main loop is very straightforward:
int main(void) { int i; CyGlobalIntEnable; USB_Start(0, USB_DWR_VDDD_OPERATION); i = 0; while (! USB_GetConfiguration()) { Port2Reg_Write(1 << i); wait100(); i++; if (i == 😎 { i = 0; } } Port2Reg_Write(0); /* ... */ }
Right now, USB_GetConfiguration() never returns nonzero so I sit and spin. The computer (OSX, also tried on Windows and Linux) shows the USB device enumerating and then disappearing, over and over again. If I am quick enough I can see that my manufacturer name and product name strings show up in lsusb output but that's it.
Is there something basic I'm missing? I have studied the examples and they seem to do the same thing, and in fact if I load one of the other PSoC5LP demos (such as the PSoC 4 Pioneer programmer source) it does the same thing, leading me to believe that something isn't correct perhaps on my board.
