void usb_handler(void) {
if (USB_IDLE_FLAG) {
/* Idle - suspend */
USBSuspend(); // // Must be defined in user code.
ClearUsbInterruptFlag(USB_IDLE);
}
if (USB_RESET_FLAG) {
usb_handle_reset();
ClearUsbInterruptFlag(USB_URST);
}
if (USB_ERROR_FLAG) {
// usb_handle_error();
ClearAllUsbErrorInterruptFlags();
ClearUsbInterruptFlag(USB_UERR);
}
if (USB_STALL_FLAG) {
ClearUsbInterruptFlag(USB_STALL);
}
if (USB_SOF_FLAG) {
/* Start-of-frame */
if (sof_handler) sof_handler();
ClearUsbInterruptFlag(USB_SOF);
}
if (USB_TRANSACTION_FLAG) {
if (!USB_STAT2EP(GetUsbTransaction()))
usb_handle_transaction(); // Only handle EP0 transactions.
ClearUsbInterruptFlag(USB_TRN); // JTR Missing! This is why Ian was only getting one interrupt??
} // Side effect: advance USTAT Fifo
}
BYTE FAST_usb_handler(void) {
if (TestGlobalUsbInterruptFlag()) {
if (USB_RESET_FLAG) {
usb_handle_reset();
ClearUsbInterruptFlag(USB_URST);
return 0xFF;
}
if (USB_TRANSACTION_FLAG) {
trn_status = GetUsbTransaction();
if (USB_STAT2EP(trn_status)) {
usb_handle_transaction();
ClearUsbInterruptFlag(USB_TRN); // non-EP0 only
return 0xFF;
} else {
ClearUsbInterruptFlag(USB_TRN); // non-EP0 only
}
}
ClearGlobalUsbInterruptFlag();
}
return 0;
}
void usb_handler(void) {
if (USB_RESET_FLAG) {
usb_handle_reset();
ClearUsbInterruptFlag(USB_URST);
} else if (USB_ERROR_FLAG) {
usb_handle_error();
ClearUsbInterruptFlag(USB_UERR);
} else if (USB_ACTIVITY_FLAG) {
/* Activity - unsuspend */
//WakeupUsb();
ClearUsbInterruptFlag(USB_ACTIV);
} else if (USB_IDLE_FLAG) {
/* Idle - suspend */
//SuspendUsb();
//usb_low_power_request();
ClearUsbInterruptFlag(USB_IDLE);
} else if (USB_STALL_FLAG) {
/* Stall detected
* Not sure when this interrupt fires
* as the host never should send out a stall.
* Perhaps as a respons to our own stalls?
* For now just ignore it. */
ClearUsbInterruptFlag(USB_STALL);
} else if (USB_SOF_FLAG) {
/* Start-of-frame */
//if (sof_handler) sof_handler();
{
ClearUsbInterruptFlag(USB_SOF);
}
} else {
// process all pending transactions
while (USB_TRANSACTION_FLAG) {
usb_handle_transaction();
ClearUsbInterruptFlag(USB_TRN);
} // Side effect: advance USTAT Fifo
}
}
