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| author | Dean Camera <dean@fourwalledcubicle.com> | 2009-07-21 02:48:41 +0000 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2009-07-21 02:48:41 +0000 |
| commit | 67f390fe746ccc4d1dceac23f590eb1723cb7ff2 (patch) | |
| tree | eafc8a4dcb64a038afcb16fcae8d48033dc74249 /Demos/Device/Incomplete/Sideshow/Sideshow.c | |
| parent | bf50959b8016adbf6b295178b26b8173514dd060 (diff) | |
| download | lufa-67f390fe746ccc4d1dceac23f590eb1723cb7ff2.tar.gz lufa-67f390fe746ccc4d1dceac23f590eb1723cb7ff2.tar.bz2 lufa-67f390fe746ccc4d1dceac23f590eb1723cb7ff2.zip | |
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.
Diffstat (limited to 'Demos/Device/Incomplete/Sideshow/Sideshow.c')
| -rw-r--r-- | Demos/Device/Incomplete/Sideshow/Sideshow.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/Demos/Device/Incomplete/Sideshow/Sideshow.c b/Demos/Device/Incomplete/Sideshow/Sideshow.c index 41e36cc70..cc8bd51c3 100644 --- a/Demos/Device/Incomplete/Sideshow/Sideshow.c +++ b/Demos/Device/Incomplete/Sideshow/Sideshow.c @@ -141,17 +141,17 @@ void EVENT_USB_UnhandledControlPacket(void) void SideShow_Task(void)
{
- /* Check if the USB System is connected to a Host */
- if (USB_IsConnected)
+ /* Device must be connected and configured for the task to run */
+ if (!(USB_IsConnected) || !(USB_ConfigurationNumber))
+ return;
+
+ /* Select the SideShow data out endpoint */
+ Endpoint_SelectEndpoint(SIDESHOW_OUT_EPNUM);
+
+ /* Check to see if a new SideShow message has been received */
+ if (Endpoint_IsReadWriteAllowed())
{
- /* Select the SideShow data out endpoint */
- Endpoint_SelectEndpoint(SIDESHOW_OUT_EPNUM);
-
- /* Check to see if a new SideShow message has been received */
- if (Endpoint_IsReadWriteAllowed())
- {
- /* Process the received SideShow message */
- Sideshow_ProcessCommandPacket();
- }
+ /* Process the received SideShow message */
+ Sideshow_ProcessCommandPacket();
}
}
|