Completed documentation of the HID device class driver.

[pub/USBasp.git] / LUFA / Drivers / USB / Class / Device / CDC.c

diff --git a/LUFA/Drivers/USB/Class/Device/CDC.c b/LUFA/Drivers/USB/Class/Device/CDC.c
index 8acaac7..c551fb7 100644 (file)
--- a/LUFA/Drivers/USB/Class/Device/CDC.c
+++ b/LUFA/Drivers/USB/Class/Device/CDC.c
@@ -73,7 +73,7 @@ void USB_CDC_ProcessControlPacket(USB_ClassInfo_CDC_t* CDCInterfaceInfo)
                                \r
                                CDCInterfaceInfo->ControlLineState = USB_ControlRequest.wValue;\r
                                \r
-                               EVENT_USB_CDC_ControLineStateChanged();\r
+                               EVENT_USB_CDC_ControLineStateChanged(CDCInterfaceInfo);\r
 \r
                                while (!(Endpoint_IsINReady()));\r
                                Endpoint_ClearIN();\r
@@ -130,12 +130,18 @@ void USB_CDC_USBTask(USB_ClassInfo_CDC_t* CDCInterfaceInfo)
 \r
 void USB_CDC_SendString(USB_ClassInfo_CDC_t* CDCInterfaceInfo, char* Data, uint16_t Length)\r
 {\r
+       if (!(USB_IsConnected))\r
+         return;\r
+\r
        Endpoint_SelectEndpoint(CDCInterfaceInfo->DataINEndpointNumber);\r
        Endpoint_Write_Stream_LE(Data, Length, NO_STREAM_CALLBACK);\r
 }\r
 \r
 void USB_CDC_SendByte(USB_ClassInfo_CDC_t* CDCInterfaceInfo, uint8_t Data)\r
 {\r
+       if (!(USB_IsConnected))\r
+         return;\r
+\r
        Endpoint_SelectEndpoint(CDCInterfaceInfo->DataINEndpointNumber);\r
 \r
        if (!(Endpoint_IsReadWriteAllowed()))\r
@@ -156,6 +162,9 @@ uint16_t USB_CDC_BytesReceived(USB_ClassInfo_CDC_t* CDCInterfaceInfo)
 \r
 uint8_t USB_CDC_ReceiveByte(USB_ClassInfo_CDC_t* CDCInterfaceInfo)\r
 {\r
+       if (!(USB_IsConnected))\r
+         return 0;\r
+\r
        Endpoint_SelectEndpoint(CDCInterfaceInfo->DataOUTEndpointNumber);\r
        \r
        uint8_t DataByte = Endpoint_Read_Byte();\r
@@ -166,8 +175,11 @@ uint8_t USB_CDC_ReceiveByte(USB_ClassInfo_CDC_t* CDCInterfaceInfo)
        return DataByte;\r
 }\r
 \r
-void USB_CDC_SendSerialLineStateChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo, uint16_t LineStateMask)\r
+void USB_CDC_SendSerialLineStateChange(USB_ClassInfo_CDC_t* CDCInterfaceInfo, uint16_t LineStateMask)\r
 {\r
+       if (!(USB_IsConnected))\r
+         return;\r
+\r
        Endpoint_SelectEndpoint(CDCInterfaceInfo->NotificationEndpointNumber);\r
        \r
        USB_Request_Header_t Notification = (USB_Request_Header_t)\r