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path: root/LUFA/Drivers/USB/Class/Device/CDC.c
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Diffstat (limited to 'LUFA/Drivers/USB/Class/Device/CDC.c')
-rw-r--r--LUFA/Drivers/USB/Class/Device/CDC.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/LUFA/Drivers/USB/Class/Device/CDC.c b/LUFA/Drivers/USB/Class/Device/CDC.c
index 07c05141b..12b55938c 100644
--- a/LUFA/Drivers/USB/Class/Device/CDC.c
+++ b/LUFA/Drivers/USB/Class/Device/CDC.c
@@ -114,7 +114,7 @@ bool CDC_Device_ConfigureEndpoints(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo)
void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo)
{
- if (!(USB_IsConnected))
+ if (!(USB_IsConnected) || !(USB_ConfigurationNumber))
return;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpointNumber);