//------------------------------------------------------------------------------
/// Handles the given request if it is standard, otherwise STALLs it.
/// \param pDriver Pointer to a USBDDriver instance.
/// \param pRequest Pointer to a USBGenericRequest instance.
//------------------------------------------------------------------------------
void USBDDriver_RequestHandler(
USBDDriver *pDriver,
const USBGenericRequest *pRequest)
{
unsigned char cfgnum;
unsigned char infnum;
unsigned char eptnum;
unsigned char setting;
unsigned char type;
unsigned char indexDesc;
unsigned int length;
unsigned int address;
TRACE_INFO_WP("Std ");
// Check request code
switch (USBGenericRequest_GetRequest(pRequest)) {
case USBGenericRequest_GETDESCRIPTOR:
TRACE_INFO_WP("gDesc ");
// Send the requested descriptor
type = USBGetDescriptorRequest_GetDescriptorType(pRequest);
indexDesc = USBGetDescriptorRequest_GetDescriptorIndex(pRequest);
length = USBGenericRequest_GetLength(pRequest);
GetDescriptor(pDriver, type, indexDesc, length);
break;
case USBGenericRequest_SETADDRESS:
TRACE_INFO_WP("sAddr ");
// Sends a zero-length packet and then set the device address
address = USBSetAddressRequest_GetAddress(pRequest);
USBD_Write(0, 0, 0, (TransferCallback) USBD_SetAddress, (void *) address);
break;
case USBGenericRequest_SETCONFIGURATION:
TRACE_INFO_WP("sCfg ");
// Set the requested configuration
cfgnum = USBSetConfigurationRequest_GetConfiguration(pRequest);
SetConfiguration(pDriver, cfgnum);
break;
case USBGenericRequest_GETCONFIGURATION:
TRACE_INFO_WP("gCfg ");
// Send the current configuration number
GetConfiguration(pDriver);
break;
case USBGenericRequest_GETSTATUS:
TRACE_INFO_WP("gSta ");
// Check who is the recipient
switch (USBGenericRequest_GetRecipient(pRequest)) {
case USBGenericRequest_DEVICE:
TRACE_INFO_WP("Dev ");
// Send the device status
GetDeviceStatus(pDriver);
break;
case USBGenericRequest_ENDPOINT:
TRACE_INFO_WP("Ept ");
// Send the endpoint status
eptnum = USBGenericRequest_GetEndpointNumber(pRequest);
GetEndpointStatus(eptnum);
break;
default:
TRACE_WARNING(
"USBDDriver_RequestHandler: Unknown recipient (%d)\n\r",
USBGenericRequest_GetRecipient(pRequest));
USBD_Stall(0);
}
break;
case USBGenericRequest_CLEARFEATURE:
TRACE_INFO_WP("cFeat ");
// Check which is the requested feature
switch (USBFeatureRequest_GetFeatureSelector(pRequest)) {
case USBFeatureRequest_ENDPOINTHALT:
TRACE_INFO_WP("Hlt ");
// Unhalt endpoint and send a zero-length packet
USBD_Unhalt(USBGenericRequest_GetEndpointNumber(pRequest));
USBD_Write(0, 0, 0, 0, 0);
break;
case USBFeatureRequest_DEVICEREMOTEWAKEUP:
TRACE_INFO_WP("RmWU ");
// Disable remote wake-up and send a zero-length packet
pDriver->isRemoteWakeUpEnabled = 0;
USBD_Write(0, 0, 0, 0, 0);
break;
default:
TRACE_WARNING(
"USBDDriver_RequestHandler: Unknown feature selector (%d)\n\r",
USBFeatureRequest_GetFeatureSelector(pRequest));
USBD_Stall(0);
}
break;
case USBGenericRequest_SETFEATURE:
TRACE_INFO_WP("sFeat ");
// Check which is the selected feature
switch (USBFeatureRequest_GetFeatureSelector(pRequest)) {
case USBFeatureRequest_DEVICEREMOTEWAKEUP:
TRACE_INFO_WP("RmWU ");
// Enable remote wake-up and send a ZLP
pDriver->isRemoteWakeUpEnabled = 1;
USBD_Write(0, 0, 0, 0, 0);
break;
case USBFeatureRequest_ENDPOINTHALT:
TRACE_INFO_WP("Halt ");
// Halt endpoint
USBD_Halt(USBGenericRequest_GetEndpointNumber(pRequest));
USBD_Write(0, 0, 0, 0, 0);
break;
#if defined(CHIP_USB_UDPHS) || defined(CHIP_USB_OTGHS)
case USBFeatureRequest_TESTMODE:
// 7.1.20 Test Mode Support
if ((USBGenericRequest_GetType(pRequest) == USBGenericRequest_DEVICE)
&& ((USBGenericRequest_GetIndex(pRequest) & 0x000F) == 0)) {
// Handle test request
USBDDriver_Test(USBFeatureRequest_GetTestSelector(pRequest));
}
else {
USBD_Stall(0);
}
break;
#endif
#if defined(CHIP_USB_OTGHS)
case USBFeatureRequest_OTG_B_HNP_ENABLE:
TRACE_INFO_WP("OTG_B_HNP_ENABLE ");
otg_features_supported |= 1<<USBFeatureRequest_OTG_B_HNP_ENABLE;
USBD_Write(0, 0, 0, 0, 0);
break;
case USBFeatureRequest_OTG_A_HNP_SUPPORT:
TRACE_INFO_WP("OTG_A_HNP_SUPPORT ");
otg_features_supported |= 1<<USBFeatureRequest_OTG_A_HNP_SUPPORT;
USBD_Write(0, 0, 0, 0, 0);
break;
case USBFeatureRequest_OTG_A_ALT_HNP_SUPPORT:
TRACE_INFO_WP("OTG_A_ALT_HNP_SUPPORT ");
otg_features_supported |= 1<<USBFeatureRequest_OTG_A_ALT_HNP_SUPPORT;
USBD_Write(0, 0, 0, 0, 0);
break;
#endif
default:
TRACE_WARNING(
"USBDDriver_RequestHandler: Unknown feature selector (%d)\n\r",
USBFeatureRequest_GetFeatureSelector(pRequest));
USBD_Stall(0);
}
break;
case USBGenericRequest_SETINTERFACE:
TRACE_INFO_WP("sInterface ");
infnum = USBInterfaceRequest_GetInterface(pRequest);
setting = USBInterfaceRequest_GetAlternateSetting(pRequest);
SetInterface(pDriver, infnum, setting);
break;
case USBGenericRequest_GETINTERFACE:
TRACE_INFO_WP("gInterface ");
infnum = USBInterfaceRequest_GetInterface(pRequest);
GetInterface(pDriver, infnum);
break;
default:
TRACE_WARNING(
"USBDDriver_RequestHandler: Unknown request code (%d)\n\r",
USBGenericRequest_GetRequest(pRequest));
USBD_Stall(0);
}
}
/**
* Handles the given request if it is standard, otherwise STALLs it.
* \param pDriver Pointer to a USBDDriver instance.
* \param pRequest Pointer to a USBGenericRequest instance.
*/
void USBDDriver_RequestHandler(
USBDDriver *pDriver,
const USBGenericRequest *pRequest)
{
uint8_t cfgnum;
uint8_t infnum;
uint8_t eptnum;
uint8_t setting;
uint8_t type;
uint8_t indexDesc;
uint32_t length;
uint32_t address;
TRACE_INFO_WP("Std ");
/* Check request code */
switch (USBGenericRequest_GetRequest(pRequest)) {
case USBGenericRequest_GETDESCRIPTOR:
TRACE_INFO_WP("gDesc ");
/* Send the requested descriptor */
type = USBGetDescriptorRequest_GetDescriptorType(pRequest);
indexDesc = USBGetDescriptorRequest_GetDescriptorIndex(pRequest);
length = USBGenericRequest_GetLength(pRequest);
GetDescriptor(pDriver, type, indexDesc, length);
break;
case USBGenericRequest_SETADDRESS:
TRACE_INFO_WP("sAddr ");
/* Sends a zero-length packet and then set the device address */
address = USBSetAddressRequest_GetAddress(pRequest);
USBD_Write(0, 0, 0, (TransferCallback) USBD_SetAddress, (void *) address);
break;
case USBGenericRequest_SETCONFIGURATION:
TRACE_INFO_WP("sCfg ");
/* Set the requested configuration */
cfgnum = USBSetConfigurationRequest_GetConfiguration(pRequest);
SetConfiguration(pDriver, cfgnum);
break;
case USBGenericRequest_GETCONFIGURATION:
TRACE_INFO_WP("gCfg ");
/* Send the current configuration number */
GetConfiguration(pDriver);
break;
case USBGenericRequest_GETSTATUS:
TRACE_INFO_WP("gSta ");
/* Check who is the recipient */
switch (USBGenericRequest_GetRecipient(pRequest)) {
case USBGenericRequest_DEVICE:
TRACE_INFO_WP("Dev ");
/* Send the device status */
GetDeviceStatus(pDriver);
break;
case USBGenericRequest_ENDPOINT:
TRACE_INFO_WP("Ept ");
/* Send the endpoint status */
eptnum = USBGenericRequest_GetEndpointNumber(pRequest);
GetEndpointStatus(eptnum);
break;
default:
TRACE_WARNING(
"USBDDriver_RequestHandler: Unknown recipient (%d)\n\r",
USBGenericRequest_GetRecipient(pRequest));
USBD_Stall(0);
}
break;
case USBGenericRequest_CLEARFEATURE:
TRACE_INFO_WP("cFeat ");
/* Check which is the requested feature */
switch (USBFeatureRequest_GetFeatureSelector(pRequest)) {
case USBFeatureRequest_ENDPOINTHALT:
TRACE_INFO_WP("Hlt ");
/* Unhalt endpoint and send a zero-length packet */
USBD_Unhalt(USBGenericRequest_GetEndpointNumber(pRequest));
USBD_Write(0, 0, 0, 0, 0);
break;
case USBFeatureRequest_DEVICEREMOTEWAKEUP:
TRACE_INFO_WP("RmWU ");
/* Disable remote wake-up and send a zero-length packet */
pDriver->isRemoteWakeUpEnabled = 0;
USBD_Write(0, 0, 0, 0, 0);
break;
default:
TRACE_WARNING(
"USBDDriver_RequestHandler: Unknown feature selector (%d)\n\r",
USBFeatureRequest_GetFeatureSelector(pRequest));
USBD_Stall(0);
}
break;
case USBGenericRequest_SETFEATURE:
TRACE_INFO_WP("sFeat ");
/* Check which is the selected feature */
switch (USBFeatureRequest_GetFeatureSelector(pRequest)) {
case USBFeatureRequest_DEVICEREMOTEWAKEUP:
TRACE_INFO_WP("RmWU ");
/* Enable remote wake-up and send a ZLP */
pDriver->isRemoteWakeUpEnabled = 1;
USBD_Write(0, 0, 0, 0, 0);
break;
case USBFeatureRequest_ENDPOINTHALT:
TRACE_INFO_WP("Halt ");
/* Halt endpoint */
USBD_Halt(USBGenericRequest_GetEndpointNumber(pRequest));
USBD_Write(0, 0, 0, 0, 0);
break;
case USBFeatureRequest_OTG_B_HNP_ENABLE:
TRACE_INFO_WP("OTG_B_HNP_ENABLE ");
pDriver->otg_features_supported |=
1<<USBFeatureRequest_OTG_B_HNP_ENABLE;
USBD_Write(0, 0, 0, 0, 0);
break;
case USBFeatureRequest_OTG_A_HNP_SUPPORT:
TRACE_INFO_WP("OTG_A_HNP_SUPPORT ");
pDriver->otg_features_supported |=
1<<USBFeatureRequest_OTG_A_HNP_SUPPORT;
USBD_Write(0, 0, 0, 0, 0);
break;
case USBFeatureRequest_OTG_A_ALT_HNP_SUPPORT:
TRACE_INFO_WP("OTG_A_ALT_HNP_SUPPORT ");
pDriver->otg_features_supported |=
1<<USBFeatureRequest_OTG_A_ALT_HNP_SUPPORT;
USBD_Write(0, 0, 0, 0, 0);
break;
default:
TRACE_WARNING(
"USBDDriver_RequestHandler: Unknown feature selector (%d)\n\r",
USBFeatureRequest_GetFeatureSelector(pRequest));
USBD_Stall(0);
}
break;
case USBGenericRequest_SETINTERFACE:
TRACE_INFO_WP("sInterface ");
infnum = USBInterfaceRequest_GetInterface(pRequest);
setting = USBInterfaceRequest_GetAlternateSetting(pRequest);
SetInterface(pDriver, infnum, setting);
break;
case USBGenericRequest_GETINTERFACE:
TRACE_INFO_WP("gInterface ");
infnum = USBInterfaceRequest_GetInterface(pRequest);
GetInterface(pDriver, infnum);
break;
default:
TRACE_WARNING(
"USBDDriver_RequestHandler: Unknown request code (%d)\n\r",
USBGenericRequest_GetRequest(pRequest));
USBD_Stall(0);
}
}