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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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This commit is contained in:
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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17
LUFA/Drivers/USB/Class/Host/CDC.c
View file

@ -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)

13
LUFA/Drivers/USB/Class/Host/CDC.h
View file

@ -108,17 +108,16 @@
enum
{
CDC_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully */
CDC_ENUMERROR_ControlError = 1, /**< A control request to the device failed to complete successfully */
CDC_ENUMERROR_DescriptorTooLarge = 2, /**< The device's Configuration Descriptor is too large to process */
CDC_ENUMERROR_InvalidConfigDataReturned = 3, /**< The device returned an invalid Configuration Descriptor */
CDC_ENUMERROR_NoCDCInterfaceFound = 4, /**< A compatible CDC interface was not found in the device's Configuration Descriptor */
CDC_ENUMERROR_EndpointsNotFound = 5, /**< Compatible CDC endpoints were not found in the device's CDC interface */
CDC_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor */
CDC_ENUMERROR_NoCDCInterfaceFound = 2, /**< A compatible CDC interface was not found in the device's Configuration Descriptor */
CDC_ENUMERROR_EndpointsNotFound = 3, /**< Compatible CDC endpoints were not found in the device's CDC interface */
} CDCHost_EnumerationFailure_ErrorCodes_t;
/* Function Prototypes: */
void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);
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 ConfigDescriptorLength,
uint8_t* DeviceConfigDescriptor);
void EVENT_CDC_Host_ControLineStateChanged(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);
uint8_t CDC_Host_SetLineEncoding(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);

19
LUFA/Drivers/USB/Class/Host/HID.c
View file

@ -34,24 +34,13 @@
#define INCLUDE_FROM_HID_CLASS_HOST_C
#include "HID.h"
uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* HIDInterfaceInfo, uint16_t MaxConfigBufferSize)
uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* HIDInterfaceInfo, 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 HID_ENUMERROR_ControlError;
if (ConfigDescriptorSize > MaxConfigBufferSize)
return HID_ENUMERROR_DescriptorTooLarge;
ConfigDescriptorData = alloca(ConfigDescriptorSize);
USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData);
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return HID_ENUMERROR_InvalidConfigDataReturned;
return HID_ENUMERROR_InvalidConfigDescriptor;
do
{
@ -62,7 +51,7 @@ uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* HIDInterfaceInfo, uint
}
} while (HIDInterfaceInfo->Config.MatchInterfaceProtocol &&
DESCRIPTOR_PCAST(ConfigDescriptorData,
USB_Descriptor_Interface_t)->HIDInterfaceProtocol != HIDInterfaceInfo->Config.Protocol);
USB_Descriptor_Interface_t)->Protocol != HIDInterfaceInfo->Config.HIDInterfaceProtocol);
while (FoundEndpoints != ((1 << HID_FOUND_DATAPIPE_IN) | (1 << HID_FOUND_DATAPIPE_OUT)))
{

11
LUFA/Drivers/USB/Class/Host/HID.h
View file

@ -85,16 +85,15 @@
enum
{
HID_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully */
HID_ENUMERROR_ControlError = 1, /**< A control request to the device failed to complete successfully */
HID_ENUMERROR_DescriptorTooLarge = 2, /**< The device's Configuration Descriptor is too large to process */
HID_ENUMERROR_InvalidConfigDataReturned = 3, /**< The device returned an invalid Configuration Descriptor */
HID_ENUMERROR_NoHIDInterfaceFound = 4, /**< A compatible HID interface was not found in the device's Configuration Descriptor */
HID_ENUMERROR_EndpointsNotFound = 5, /**< Compatible HID endpoints were not found in the device's CDC interface */
HID_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor */
HID_ENUMERROR_NoHIDInterfaceFound = 2, /**< A compatible HID interface was not found in the device's Configuration Descriptor */
HID_ENUMERROR_EndpointsNotFound = 3, /**< Compatible HID endpoints were not found in the device's CDC interface */
} CDCHost_EnumerationFailure_ErrorCodes_t;
/* Function Prototypes: */
void HID_Host_USBTask(USB_ClassInfo_HID_Host_t* HIDInterfaceInfo);
uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* HIDInterfaceInfo, uint16_t MaxConfigBufferSize);
uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* HIDInterfaceInfo, uint16_t ConfigDescriptorLength,
uint8_t* DeviceConfigDescriptor);
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)