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Fixed LowLevel JoystickHostWithParser demo not saving the chosen HID interface's report descriptor size.

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Simplified low level Host demo configuration descriptor parser routines.
This commit is contained in:
Dean Camera 2010-10-01 12:01:54 +00:00
parent d36c96d6a5
commit c8942ef469
15 changed files with 175 additions and 217 deletions
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39
Demos/Host/LowLevel/PrinterHost/ConfigDescriptor.c
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@ -50,8 +50,9 @@ uint8_t ProcessConfigurationDescriptor(void)
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Interface_t* PrinterInterface = NULL;
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
@ -66,28 +67,13 @@ uint8_t ProcessConfigurationDescriptor(void)
return ControlError;
}
/* Get the first Printer interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextBidirectionalPrinterInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
}
/* Save Printer interface details for later use */
PrinterInterfaceNumber = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t)->InterfaceNumber;
PrinterAltSetting = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t)->AlternateSetting;
while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
/* Get the next Printer interface's data endpoint descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
/* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
if (!(PrinterInterface) ||
USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextPrinterInterfaceBulkDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Clear any found endpoints */
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
/* Get the next Printer interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextBidirectionalPrinterInterface) != DESCRIPTOR_SEARCH_COMP_Found)
@ -96,9 +82,12 @@ uint8_t ProcessConfigurationDescriptor(void)
return NoCompatibleInterfaceFound;
}
/* Save Printer interface details for later use */
PrinterInterfaceNumber = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t)->InterfaceNumber;
PrinterAltSetting = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t)->AlternateSetting;
/* Save the interface in case we need to refer back to it later */
PrinterInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
/* Clear any found endpoints */
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
/* Skip the remainder of the loop as we have not found an endpoint yet */
continue;
@ -114,6 +103,10 @@ uint8_t ProcessConfigurationDescriptor(void)
DataOUTEndpoint = EndpointData;
}
/* Save Printer interface details for later use */
PrinterInterfaceNumber = PrinterInterface->InterfaceNumber;
PrinterAltSetting = PrinterInterface->AlternateSetting;
/* Configure the Printer data IN pipe */
Pipe_ConfigurePipe(PRINTER_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);