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Add explicit guards to all device mode tasks to ensure the device is connected and configured before running the task, to prevent any user tasks from locking up the main USB task if the device has not been properly configured.

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This commit is contained in:
Dean Camera
2009-07-21 02:48:41 +00:00
parent bf50959b80
commit 67f390fe74
19 changed files with 245 additions and 216 deletions
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4
Demos/Device/LowLevel/CDC/CDC.c
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@@ -254,6 +254,10 @@ void CDC_Task(void)
"Joystick Pressed\r\n",
};
/* Device must be connected and configured for the task to run */
if (!(USB_IsConnected) || !(USB_ConfigurationNumber))
return;
#if 0
/* NOTE: Here you can use the notification endpoint to send back line state changes to the host, for the special RS-232
* handshake signal lines (and some error states), via the CONTROL_LINE_IN_* masks and the following code: