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Ensure device address latch bit is not set at the same time as the new address, as per datasheet.

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Minor documentation fixes.

Fix broken USB host mode due to the USB frame counter not being updated during the early enumeration steps, causing USB_Host_DelayMS() to spinloop forever.
This commit is contained in:
Dean Camera 2010-09-19 05:46:17 +00:00
parent cce8760b91
commit 01fecac0a7
8 changed files with 38 additions and 15 deletions
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19
LUFA/Drivers/USB/LowLevel/Host.c
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@ -194,19 +194,21 @@ void USB_Host_ProcessNextHostState(void)
uint8_t USB_Host_WaitMS(uint8_t MS)
{
bool BusSuspended = USB_Host_IsBusSuspended();
uint8_t ErrorCode = HOST_WAITERROR_Successful;
uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
bool BusSuspended = USB_Host_IsBusSuspended();
uint8_t ErrorCode = HOST_WAITERROR_Successful;
USB_Host_ResumeBus();
bool HSOFIEnabled = USB_INT_IsEnabled(USB_INT_HSOFI);
USB_INT_Disable(USB_INT_HSOFI);
USB_INT_Clear(USB_INT_HSOFI);
while (MS)
{
uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
if (CurrentFrameNumber != PreviousFrameNumber)
if (USB_INT_HasOccurred(USB_INT_HSOFI))
{
PreviousFrameNumber = CurrentFrameNumber;
USB_INT_Clear(USB_INT_HSOFI);
MS--;
}
@ -234,6 +236,9 @@ uint8_t USB_Host_WaitMS(uint8_t MS)
}
}
if (HSOFIEnabled)
USB_INT_Enable(USB_INT_HSOFI);
if (BusSuspended)
USB_Host_SuspendBus();