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Change Host mode class driver Pipe configuration routines -- better to let the application fetch the configuration descriptors once, and then pass them to each class driver in turn.

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Dean Camera
2009-07-27 10:48:55 +00:00
parent 5251bc6e4e
commit 84c3c4a3d9
6 changed files with 66 additions and 50 deletions
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LUFA/Drivers/USB/Class/Host/CDC.c
+3 -14
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@@ -34,24 +34,13 @@
#define INCLUDE_FROM_CDC_CLASS_HOST_C
#include "CDC.h"
uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint16_t MaxConfigBufferSize)
uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint16_t ConfigDescriptorSize,
uint8_t* ConfigDescriptorData)
{
uint8_t* ConfigDescriptorData;
uint16_t ConfigDescriptorSize;
uint8_t FoundEndpoints = 0;
if (USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)
return CDC_ENUMERROR_ControlError;
if (ConfigDescriptorSize > MaxConfigBufferSize)
return CDC_ENUMERROR_DescriptorTooLarge;
ConfigDescriptorData = alloca(ConfigDescriptorSize);
USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData);
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return CDC_ENUMERROR_InvalidConfigDataReturned;
return CDC_ENUMERROR_InvalidConfigDescriptor;
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_CDC_Host_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)