Added new USB_DeviceState variable to keep track of the current Device mode USB state.

Added new Endpoint_ClearStatusStage() convenience function to assist with the status stages of control transfers.

Removed vague USB_IsConnected global - test USB_DeviceState or USB_HostState explicitly to gain previous functionality.

Removed USB_IsSuspended global - test USB_DeviceState against DEVICE_STATE_Suspended instead.

Fixed possible enumeration errors from spinloops which may fail to exit if the USB connection is severed before the exit condition becomes true.
This commit is contained in:
Dean Camera 2009-07-21 13:31:21 +00:00
parent 44179abcf8
commit e071f3897a
58 changed files with 666 additions and 463 deletions

View file

@ -139,9 +139,7 @@ void EVENT_USB_UnhandledControlPacket(void)
/* Check if the host is enabling the audio interface (setting AlternateSetting to 1) */
StreamingAudioInterfaceSelected = ((USB_ControlRequest.wValue) != 0);
/* Acknowledge status stage */
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
@ -152,7 +150,7 @@ void EVENT_USB_UnhandledControlPacket(void)
void USB_Audio_Task(void)
{
/* Device must be connected and configured for the task to run */
if (!(USB_IsConnected) || !(USB_ConfigurationNumber))
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
/* Check to see if the streaming interface is selected, if not the host is not receiving audio */