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

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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
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28
Demos/Device/LowLevel/Keyboard/Keyboard.c
View file

@ -172,7 +172,11 @@ void EVENT_USB_UnhandledControlPacket(void)
Endpoint_ClearSETUP();
/* Wait until the LED report has been sent by the host */
while (!(Endpoint_IsOUTReceived()));
while (!(Endpoint_IsOUTReceived()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
/* Read in the LED report from the host */
uint8_t LEDStatus = Endpoint_Read_Byte();
@ -183,9 +187,7 @@ void EVENT_USB_UnhandledControlPacket(void)
/* Clear the endpoint data */
Endpoint_ClearOUT();
/* Acknowledge status stage */
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
@ -200,9 +202,7 @@ void EVENT_USB_UnhandledControlPacket(void)
/* Send the flag to the host */
Endpoint_ClearIN();
/* Acknowledge status stage */
while (!(Endpoint_IsOUTReceived()));
Endpoint_ClearOUT();
Endpoint_ClearStatusStage();
}
break;
@ -214,9 +214,7 @@ void EVENT_USB_UnhandledControlPacket(void)
/* Set or clear the flag depending on what the host indicates that the current Protocol should be */
UsingReportProtocol = (USB_ControlRequest.wValue != 0);
/* Acknowledge status stage */
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
@ -228,9 +226,7 @@ void EVENT_USB_UnhandledControlPacket(void)
/* Get idle period in MSB, IdleCount must be multiplied by 4 to get number of milliseconds */
IdleCount = ((USB_ControlRequest.wValue & 0xFF00) >> 6);
/* Acknowledge status stage */
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
@ -245,9 +241,7 @@ void EVENT_USB_UnhandledControlPacket(void)
/* Send the flag to the host */
Endpoint_ClearIN();
/* Acknowledge status stage */
while (!(Endpoint_IsOUTReceived()));
Endpoint_ClearOUT();
Endpoint_ClearStatusStage();
}
break;
@ -378,7 +372,7 @@ void ReceiveNextReport(void)
void HID_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;
/* Send the next keypress report to the host */