//-----------------------------------------------------------------------------
/// Invoked when the configuration of the device changes. Resets the mass
/// storage driver.
/// \param cfgnum New configuration number.
//-----------------------------------------------------------------------------
void USBDDriverCallbacks_ConfigurationChanged(unsigned char cfgnum)
{
if (cfgnum > 0) {
MSDDriver_Reset();
}
}
//-----------------------------------------------------------------------------
/// Initializes the MSD driver and the associated USB driver.
/// \param luns Pointer to a list of LUNs
/// \param numLuns Number of LUN in list
/// \see MSDLun
//-----------------------------------------------------------------------------
void MSDDriver_Initialize(MSDLun *luns, unsigned char numLuns)
{
TRACE_INFO("MSD init\n\r");
// Command state initialization
msdDriver.commandState.state = 0;
msdDriver.commandState.postprocess = 0;
msdDriver.commandState.length = 0;
msdDriver.commandState.transfer.semaphore = 0;
// LUNs
msdDriver.luns = luns;
msdDriver.maxLun = (unsigned char) (numLuns - 1);
// Reset BOT driver
MSDDriver_Reset();
// Init the USB driver
USBDDriver_Initialize(&usbdDriver, &msdDriverDescriptors, 0);
USBD_Init();
}
//-----------------------------------------------------------------------------
/// Handler for incoming SETUP requests on default Control endpoint 0.
///
/// Standard requests are forwarded to the USBDDriver_RequestHandler
/// method.
/// \param request Pointer to a USBGenericRequest instance
//-----------------------------------------------------------------------------
void MSDDriver_RequestHandler(const USBGenericRequest *request)
{
TRACE_INFO_WP("NewReq ");
// Handle requests
switch (USBGenericRequest_GetRequest(request)) {
//---------------------
case USBGenericRequest_CLEARFEATURE:
//---------------------
TRACE_INFO_WP("ClrFeat ");
switch (USBFeatureRequest_GetFeatureSelector(request)) {
//---------------------
case USBFeatureRequest_ENDPOINTHALT:
//---------------------
TRACE_INFO_WP("Hlt ");
// Do not clear the endpoint halt status if the device is waiting
// for a reset recovery sequence
if (!msdDriver.waitResetRecovery) {
// Forward the request to the standard handler
USBDDriver_RequestHandler(&usbdDriver, request);
}
else {
TRACE_INFO_WP("No ");
}
USBD_Write(0, 0, 0, 0, 0);
break;
//------
default:
//------
// Forward the request to the standard handler
USBDDriver_RequestHandler(&usbdDriver, request);
}
break;
//-------------------
case MSD_GET_MAX_LUN:
//-------------------
TRACE_INFO_WP("gMaxLun ");
// Check request parameters
if ((request->wValue == 0)
&& (request->wIndex == 0)
&& (request->wLength == 1)) {
USBD_Write(0, &(msdDriver.maxLun), 1, 0, 0);
}
else {
TRACE_WARNING(
"MSDDriver_RequestHandler: GetMaxLUN(%d,%d,%d)\n\r",
request->wValue, request->wIndex, request->wLength);
USBD_Stall(0);
}
break;
//-----------------------
case MSD_BULK_ONLY_RESET:
//-----------------------
TRACE_INFO_WP("Rst ");
// Check parameters
if ((request->wValue == 0)
&& (request->wIndex == 0)
&& (request->wLength == 0)) {
// Reset the MSD driver
MSDDriver_Reset();
USBD_Write(0, 0, 0, 0, 0);
}
else {
TRACE_WARNING(
"MSDDriver_RequestHandler: Reset(%d,%d,%d)\n\r",
request->wValue, request->wIndex, request->wLength);
USBD_Stall(0);
}
break;
//------
default:
//------
// Forward request to standard handler
USBDDriver_RequestHandler(&usbdDriver, request);
break;
}
}