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

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Dean Camera
2012-02-09 20:30:27 +00:00
parent 385ffb6de3
commit 2180f57d17
4 changed files with 8 additions and 1 deletions
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5
LUFA/Drivers/USB/Class/Device/HIDClassDevice.c
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@@ -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();
}
}