static void handleTxInterrupts(int endpoint) {
if(!inInterruptStatus[endpoint]) {
return;
}
//uartPrintf("\tendpoint %d has an TX interrupt\r\n", endpoint);
// clear pending interrupts
if((inInterruptStatus[endpoint] & USB_EPINT_INEPNakEff) == USB_EPINT_INEPNakEff) {
InEPRegs[endpoint].interrupt = USB_EPINT_INEPNakEff;
//uartPrintf("\t\tUSB_EPINT_INEPNakEff\r\n");
}
if((inInterruptStatus[endpoint] & USB_EPINT_INTknEPMis) == USB_EPINT_INTknEPMis) {
InEPRegs[endpoint].interrupt = USB_EPINT_INTknEPMis;
//uartPrintf("\t\tUSB_EPINT_INTknEPMis\r\n");
// clear the corresponding core interrupt
SET_REG(USB + GINTSTS, GET_REG(USB + GINTSTS) | GINTMSK_EPMIS);
}
if((inInterruptStatus[endpoint] & USB_EPINT_INTknTXFEmp) == USB_EPINT_INTknTXFEmp) {
InEPRegs[endpoint].interrupt = USB_EPINT_INTknTXFEmp;
//uartPrintf("\t\tUSB_EPINT_INTknTXFEmp\r\n");
}
if((inInterruptStatus[endpoint] & USB_EPINT_TimeOUT) == USB_EPINT_TimeOUT) {
InEPRegs[endpoint].interrupt = USB_EPINT_TimeOUT;
//uartPrintf("\t\tUSB_EPINT_TimeOUT\r\n");
currentlySending = 0xFF;
//ringBufferDequeue(txQueue);
}
if((inInterruptStatus[endpoint] & USB_EPINT_AHBErr) == USB_EPINT_AHBErr) {
InEPRegs[endpoint].interrupt = USB_EPINT_AHBErr;
//uartPrintf("\t\tUSB_EPINT_AHBErr\r\n");
}
if((inInterruptStatus[endpoint] & USB_EPINT_EPDisbld) == USB_EPINT_EPDisbld) {
InEPRegs[endpoint].interrupt = USB_EPINT_EPDisbld;
//uartPrintf("\t\tUSB_EPINT_EPDisbldr\n");
}
if((inInterruptStatus[endpoint] & USB_EPINT_XferCompl) == USB_EPINT_XferCompl) {
InEPRegs[endpoint].interrupt = USB_EPINT_XferCompl;
//uartPrintf("\t\tUSB_EPINT_XferCompl\n");
currentlySending = 0xFF;
advanceTxQueue();
if(usb_message_queue[endpoint])
usb_message_queue[endpoint] = usb_message_queue[endpoint]->next;
continueMessageQueue(endpoint);
}
}
static void continueMessageQueue(int _ep)
{
USBMessageQueue *q = usb_message_queue[_ep];
if(q != NULL)
{
usbTxRx(_ep, q->dir, q->type, q->data, q->dataLen);
if(q->dir == USBIn)
{
ringBufferEnqueue(txQueue, _ep);
advanceTxQueue();
}
}
}
void usb_send_interrupt(uint8_t endpoint, void* buffer, int bufferLen) {
usbTxRx(endpoint, USBIn, USBInterrupt, buffer, bufferLen);
ringBufferEnqueue(txQueue, endpoint);
advanceTxQueue();
}
static void sendControl(void* buffer, int bufferLen) {
usbTxRx(USB_CONTROLEP, USBIn, USBControl, buffer, bufferLen);
ringBufferEnqueue(txQueue, USB_CONTROLEP);
advanceTxQueue();
}
