uint8_t USB_GetNextDescriptorComp(uint16_t* const BytesRem, void** const CurrConfigLoc, ConfigComparatorPtr_t const ComparatorRoutine)
{
uint8_t ErrorCode;
while (*BytesRem)
{
uint8_t* PrevDescLoc = *CurrConfigLoc;
uint16_t PrevBytesRem = *BytesRem;
USB_GetNextDescriptor(BytesRem, CurrConfigLoc);
if ((ErrorCode = ComparatorRoutine(*CurrConfigLoc)) != DESCRIPTOR_SEARCH_NotFound)
{
if (ErrorCode == DESCRIPTOR_SEARCH_Fail)
{
*CurrConfigLoc = PrevDescLoc;
*BytesRem = PrevBytesRem;
}
return ErrorCode;
}
}
return DESCRIPTOR_SEARCH_COMP_EndOfDescriptor;
}
void USB_GetNextDescriptorOfType(uint16_t* const BytesRem,
void** const CurrConfigLoc,
const uint8_t Type)
{
while (*BytesRem)
{
USB_GetNextDescriptor(BytesRem, CurrConfigLoc);
if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type)
return;
}
}
void USB_GetNextDescriptorOfTypeBefore(uint16_t* const BytesRem,
void** const CurrConfigLoc,
const uint8_t Type,
const uint8_t BeforeType)
{
while (*BytesRem)
{
USB_GetNextDescriptor(BytesRem, CurrConfigLoc);
if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type)
{
return;
}
else if (DESCRIPTOR_TYPE(*CurrConfigLoc) == BeforeType)
{
*BytesRem = 0;
return;
}
}
}
uint8_t USB_Host_GetDeviceConfigDescriptor(uint8_t ConfigNumber, uint16_t* const ConfigSizePtr,
void* BufferPtr, uint16_t BufferSize)
{
uint8_t ErrorCode;
uint8_t ConfigHeader[sizeof(USB_Descriptor_Configuration_Header_t)];
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
.bRequest = REQ_GetDescriptor,
.wValue = ((DTYPE_Configuration << 8) | (ConfigNumber - 1)),
.wIndex = 0,
.wLength = sizeof(USB_Descriptor_Configuration_Header_t),
};
Pipe_SelectPipe(PIPE_CONTROLPIPE);
if ((ErrorCode = USB_Host_SendControlRequest(ConfigHeader)) != HOST_SENDCONTROL_Successful)
return ErrorCode;
*ConfigSizePtr = DESCRIPTOR_CAST(ConfigHeader, USB_Descriptor_Configuration_Header_t).TotalConfigurationSize;
if (*ConfigSizePtr > BufferSize)
return HOST_GETCONFIG_BuffOverflow;
USB_ControlRequest.wLength = *ConfigSizePtr;
if ((ErrorCode = USB_Host_SendControlRequest(BufferPtr)) != HOST_SENDCONTROL_Successful)
return ErrorCode;
if (DESCRIPTOR_TYPE(BufferPtr) != DTYPE_Configuration)
return HOST_GETCONFIG_InvalidData;
return HOST_GETCONFIG_Successful;
}
#endif
void USB_GetNextDescriptorOfType(uint16_t* const BytesRem,
void** const CurrConfigLoc,
const uint8_t Type)
{
while (*BytesRem)
{
USB_GetNextDescriptor(BytesRem, CurrConfigLoc);
if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type)
return;
}
}
void USB_GetNextDescriptorOfTypeBefore(uint16_t* const BytesRem,
void** const CurrConfigLoc,
const uint8_t Type,
const uint8_t BeforeType)
{
while (*BytesRem)
{
USB_GetNextDescriptor(BytesRem, CurrConfigLoc);
if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type)
{
return;
}
else if (DESCRIPTOR_TYPE(*CurrConfigLoc) == BeforeType)
{
*BytesRem = 0;
return;
}
}
}
void USB_GetNextDescriptorOfTypeAfter(uint16_t* const BytesRem,
void** const CurrConfigLoc,
const uint8_t Type,
const uint8_t AfterType)
{
USB_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, AfterType);
if (*BytesRem)
USB_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, Type);
}