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_handle_transaction(void) {
usbrequesterrorflag = 0;
trn_status = GetUsbTransaction();
EP0_Outbdp = &usb_bdt[USB_USTAT2BD(trn_status)];
EP0_Inbdp = &usb_bdt[USB_USTAT2BD(trn_status | DIRBIT)]; // All replies in IN direction
switch (EP0_Outbdp->BDSTAT & USB_TOKEN_Mask) {
case USB_TOKEN_SETUP:
usb_handle_setup();
break;
case USB_TOKEN_OUT:
usb_handle_out();
break;
case USB_TOKEN_IN:
usb_handle_in();
break;
//default:
/* Default case of unknown TOKEN - discard */
}
}
void usb_handle_transaction(void) {
uLedToggle();
trn_status = GetUsbTransaction();
bdp = &usb_bdt[USB_USTAT2BD(trn_status)];
// JTR PIC24 fixup Added DIRBIT as it is different for PIC24F ( and different again for the PIC24E/dsPIC33E)
// the USB_USTAT2BD macro is also altered to shift the result the correct number of places.
rbdp = &usb_bdt[USB_USTAT2BD(trn_status | DIRBIT)]; // All replies in IN direction
switch (bdp->BDSTAT & USB_TOKEN_Mask) {
case USB_TOKEN_SETUP:
usb_handle_setup();
break;
case USB_TOKEN_OUT:
usb_handle_out();
break;
case USB_TOKEN_IN:
usb_handle_in();
break;
//default:
/* Default case of unknown TOKEN - discard */
}
}
