X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/1cd0f66347cf8b07dfc2e8d43ac3bdd6b6ed5aed..106f0eee17bbe837c9f94bdcf13d28e2952f1aef:/Demos/Device/ClassDriver/VirtualSerialMassStorage/VirtualSerialMassStorage.c

diff --git a/Demos/Device/ClassDriver/VirtualSerialMassStorage/VirtualSerialMassStorage.c b/Demos/Device/ClassDriver/VirtualSerialMassStorage/VirtualSerialMassStorage.c
index 6ce6b1b78..5410eb11f 100644
--- a/Demos/Device/ClassDriver/VirtualSerialMassStorage/VirtualSerialMassStorage.c
+++ b/Demos/Device/ClassDriver/VirtualSerialMassStorage/VirtualSerialMassStorage.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
-     Copyright (C) Dean Camera, 2013.
+     Copyright (C) Dean Camera, 2018.
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
-  Copyright 2013  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2018  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
@@ -224,6 +224,24 @@ void EVENT_USB_Device_ControlRequest(void)
 	MS_Device_ProcessControlRequest(&Disk_MS_Interface);
 }
 
+/** CDC class driver callback function the processing of changes to the virtual
+ *  control lines sent from the host..
+ *
+ *  \param[in] CDCInterfaceInfo  Pointer to the CDC class interface configuration structure being referenced
+ */
+void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t *const CDCInterfaceInfo)
+{
+	/* You can get changes to the virtual CDC lines in this callback; a common
+	   use-case is to use the Data Terminal Ready (DTR) flag to enable and
+	   disable CDC communications in your application when set to avoid the
+	   application blocking while waiting for a host to become ready and read
+	   in the pending data from the USB endpoints.
+	*/
+	bool HostReady = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR) != 0;
+
+	(void)HostReady;
+}
+
 /** Mass Storage class driver callback function the reception of SCSI commands from the host, which must be processed.
  *
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface configuration structure being referenced