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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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39
Demos/Device/LowLevel/DualCDC/DualCDC.c
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@ -211,9 +211,7 @@ void EVENT_USB_UnhandledControlPacket(void)
/* Acknowledge the SETUP packet, ready for data transfer */
Endpoint_ClearSETUP();
/* Acknowledge status stage */
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
@ -228,20 +226,19 @@ void CDC1_Task(void)
char* ReportString = NULL;
uint8_t JoyStatus_LCL = Joystick_GetStatus();
static bool ActionSent = false;
char* JoystickStrings[] =
{
"Joystick Up\r\n",
"Joystick Down\r\n",
"Joystick Left\r\n",
"Joystick Right\r\n",
"Joystick Pressed\r\n",
};
/* Device must be connected and configured for the task to run */
if (!(USB_IsConnected) || !(USB_ConfigurationNumber))
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
char* JoystickStrings[] =
{
"Joystick Up\r\n",
"Joystick Down\r\n",
"Joystick Left\r\n",
"Joystick Right\r\n",
"Joystick Pressed\r\n",
};
/* Determine if a joystick action has occurred */
if (JoyStatus_LCL & JOY_UP)
ReportString = JoystickStrings[0];
@ -273,7 +270,11 @@ void CDC1_Task(void)
Endpoint_ClearIN();
/* Wait until the endpoint is ready for another packet */
while (!(Endpoint_IsINReady()));
while (!(Endpoint_IsINReady()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
/* Send an empty packet to ensure that the host does not buffer data sent to it */
Endpoint_ClearIN();
@ -293,7 +294,7 @@ void CDC1_Task(void)
void CDC2_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;
/* Select the Serial Rx Endpoint */
@ -324,7 +325,11 @@ void CDC2_Task(void)
Endpoint_ClearIN();
/* Wait until the endpoint is ready for the next packet */
while (!(Endpoint_IsINReady()));
while (!(Endpoint_IsINReady()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
/* Send an empty packet to prevent host buffering */
Endpoint_ClearIN();