*/\r
uint8_t ProcessConfigurationDescriptor(void)\r
{\r
- uint8_t* ConfigDescriptorData;\r
- uint16_t ConfigDescriptorSize;\r
- \r
+ uint8_t ConfigDescriptorData[512];\r
+ uint8_t* CurrConfigLocation = ConfigDescriptorData;\r
+ uint16_t CurrConfigBytesRem;\r
uint8_t FoundEndpoints = 0;\r
- \r
- /* Get Configuration Descriptor size from the device */\r
- if (USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)\r
- return ControlError;\r
- \r
- /* Ensure that the Configuration Descriptor isn't too large */\r
- if (ConfigDescriptorSize > MAX_CONFIG_DESCRIPTOR_SIZE)\r
- return DescriptorTooLarge;\r
- \r
- /* Allocate enough memory for the entire config descriptor */\r
- ConfigDescriptorData = alloca(ConfigDescriptorSize);\r
\r
/* Retrieve the entire configuration descriptor into the allocated buffer */\r
- USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, ConfigDescriptorData);\r
- \r
- /* Validate returned data - ensure first entry is a configuration header descriptor */\r
- if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)\r
- return InvalidConfigDataReturned;\r
+ switch (USB_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))\r
+ {\r
+ case HOST_GETCONFIG_Successful:\r
+ break;\r
+ case HOST_GETCONFIG_InvalidData:\r
+ return InvalidConfigDataReturned;\r
+ case HOST_GETCONFIG_BuffOverflow:\r
+ return DescriptorTooLarge;\r
+ default:\r
+ return ControlError;\r
+ }\r
\r
/* Get the HID interface from the configuration descriptor */\r
- if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,\r
+ if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,\r
DComp_NextHIDInterface) != DESCRIPTOR_SEARCH_COMP_Found)\r
{\r
/* Descriptor not found, error out */\r
while (FoundEndpoints != ((1 << HID_DATA_IN_PIPE) | (1 << HID_DATA_OUT_PIPE)))\r
{\r
/* Get the next HID interface's data endpoint descriptor */\r
- if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,\r
+ if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,\r
DComp_NextInterfaceHIDDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)\r
{\r
/* Not all HID devices have an OUT endpoint - if we've reached the end of the HID descriptor\r
Pipe_ConfigurePipe(HID_DATA_IN_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,\r
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);\r
\r
- Pipe_SetInfiniteINRequests();\r
- \r
FoundEndpoints |= (1 << HID_DATA_IN_PIPE);\r
}\r
else\r