/*************************************************************************
* Function Name: UsbSetDevState
* Parameters: UsbT9DevState_t DevState
*
* Return: none
*
* Description: Set device state
*
*************************************************************************/
void UsbSetDevState (UsbT9DevState_t DevState)
{
pUsbStandardInterfaceDescriptor_t pInterface;
if(UsbDevCtrl.State.DS == UsbDevStatusConfigured)
{
// deconfigure device
for (Int32U i = 0; i < UsbDevCtrl.Interfaces; ++i)
{
pInterface = UsbFindInterface(UsbDevCtrl.pCnfg,i,UsbDevCtrl.AlternateSetting[i]);
UsbEpInterfaceCnfg(pInterface,FALSE);
}
}
switch (DevState)
{
case UsbDevStatusAttached:
case UsbDevStatusPowered:
case UsbDevStatusDefault:
USB_Configure(FALSE);
USB_SetDefAdd(); // Set address 0
USB_CONFIGURE_HOOK(NULL);
UsbDevCtrl.DevAdd = UsbDevCtrl.Configuration = 0;
break;
case UsbDevStatusAddress:
USB_Configure(FALSE);
UsbDevCtrl.Configuration = 0;
break;
case UsbDevStatusConfigured:
// configure device
for (Int32U i = 0; i < UsbDevCtrl.Interfaces; ++i)
{
pInterface = UsbFindInterface(UsbDevCtrl.pCnfg,i,UsbDevCtrl.AlternateSetting[i]);
UsbEpInterfaceCnfg(pInterface,TRUE);
}
USB_Configure(TRUE);
break;
default: // unknown state - disconnected or in process of a connection
USB_Configure(FALSE);
USB_CONFIGURE_HOOK(NULL);
UsbDevCtrl.DevAdd = UsbDevCtrl.Configuration = 0;
}
UsbDevCtrl.State.DS = DevState;
}
/*************************************************************************
* Function Name: USB_HwReset
* Parameters: none
*
* Return: none
*
* Description: Reset USB engine
*
*************************************************************************/
void USB_HwReset (void)
{
Int32U Count;
// Clear realized EP flag
for(Count = 0; Count < ENP_MAX_NUMB; Count++)
{
EpCnfg[Count].pEpCtrl = NULL;
}
// Free entire USB packet memory
for (Count = 0; Count < EP_MAX_SLOTS*2; Count++)
{
PacketMemBuff[Count].Size = 0;
}
// Resume delay counter
DlyCnt = 0;
// USB_Configure
USB_Configure(FALSE);
// Set Buffer table address
USB_BTABLE = USB_OffsetOfDBT;
// Init Packet memory table
pPacketMemUse = NULL;
// Control EP Init
USB_RealizeEp(&USB_CtrlEpDescr0,&USB_CtrlEpExt0,TRUE);
USB_RealizeEp(&USB_CtrlEpDescr1,&USB_CtrlEpExt1,TRUE);
// Set address 0
USB_SetDefAdd();
// Enable Device interrupts
USB_CNTR = bmCTRM | bmRESETM | bmSUSPM | bmWKUPM |
(USB_SOF_EVENT ? bmSOFM : 0) |
(USB_ERROR_EVENT ? bmERRM : 0) |
(USB_PMAOVR_EVENT ? bmPMAOVRM : 0) ;
}