eqmk
/
qmk_firmware
forked from mfulz_github/qmk_firmware
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Altered the HID class driver to only try to construct at maximum one packet per USB frame, to reduce CPU usage.

This commit is contained in:
Dean Camera 2012-02-09 20:30:27 +00:00
parent 385ffb6de3
commit 2180f57d17
4 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
LUFA.pnproj
View File

File diff suppressed because one or more lines are too long

1
LUFA/DoxygenPages/ChangeLog.txt
View File

@ -34,6 +34,7 @@
* having to reset the Mass Storage interface
* - USB_CONFIG_ATTR_BUSPOWERED constant renamed to USB_CONFIG_ATTR_RESERVED, as this was misnamed (thanks to NXP Semiconductors)
* - Reordered board name definition indexes so that a mispelled BOARD compile option will default to BOARD_USER rather than BOARD_USBKEY
* - Altered the HID class driver to only try to construct at maximum one packet per USB frame, to reduce CPU usage
* - Library Applications:
* - Altered the Mass Storage Host LowLevel demo so that SCSI data STALLs from the attached device can be recovered from automatically without
* having to reset the Mass Storage interface

5
LUFA/Drivers/USB/Class/Device/HIDClassDevice.c
View File

@ -156,6 +156,9 @@ void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
if (HIDInterfaceInfo->State.PrevFrameNum == USB_Device_GetFrameNumber())
return;
Endpoint_SelectEndpoint(HIDInterfaceInfo->Config.ReportINEndpointNumber);
if (Endpoint_IsReadWriteAllowed())
@ -190,6 +193,8 @@ void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
Endpoint_ClearIN();
}
HIDInterfaceInfo->State.PrevFrameNum = USB_Device_GetFrameNumber();
}
}

1
LUFA/Drivers/USB/Class/Device/HIDClassDevice.h
View File

@ -113,6 +113,7 @@
struct
{
bool UsingReportProtocol; /**< Indicates if the HID interface is set to Boot or Report protocol mode. */
uint16_t PrevFrameNum; /**< Frame number of the previous HID report packet opportunity. */
uint16_t IdleCount; /**< Report idle period, in milliseconds, set by the host. */
uint16_t IdleMSRemaining; /**< Total number of milliseconds remaining before the idle period elapsed - this
* should be decremented by the user application if non-zero each millisecond. */