diff options
Diffstat (limited to 'LUFA/Drivers/USB/Class/Device/CDC.c')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Device/CDC.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Class/Device/CDC.c b/LUFA/Drivers/USB/Class/Device/CDC.c new file mode 100644 index 000000000..8acaac7a1 --- /dev/null +++ b/LUFA/Drivers/USB/Class/Device/CDC.c @@ -0,0 +1,185 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2009.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, and distribute this software
+ and its documentation for any purpose and without fee is hereby
+ granted, provided that the above copyright notice appear in all
+ copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+#define INCLUDE_FROM_CDC_CLASS_C
+#include "CDC.h"
+
+void USB_CDC_Event_Stub(void)
+{
+
+}
+
+void USB_CDC_ProcessControlPacket(USB_ClassInfo_CDC_t* CDCInterfaceInfo)
+{
+ if (!(Endpoint_IsSETUPReceived()))
+ return;
+
+ if (USB_ControlRequest.wIndex != CDCInterfaceInfo->ControlInterfaceNumber)
+ return;
+
+ switch (USB_ControlRequest.bRequest)
+ {
+ case REQ_GetLineEncoding:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+ Endpoint_Write_Control_Stream_LE(&CDCInterfaceInfo->LineEncoding, sizeof(CDCInterfaceInfo->LineEncoding));
+ Endpoint_ClearOUT();
+ }
+
+ break;
+ case REQ_SetLineEncoding:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+ Endpoint_Read_Control_Stream_LE(&CDCInterfaceInfo->LineEncoding, sizeof(CDCInterfaceInfo->LineEncoding));
+ Endpoint_ClearIN();
+
+ EVENT_USB_CDC_LineEncodingChanged(CDCInterfaceInfo);
+ }
+
+ break;
+ case REQ_SetControlLineState:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+
+ CDCInterfaceInfo->ControlLineState = USB_ControlRequest.wValue;
+
+ EVENT_USB_CDC_ControLineStateChanged();
+
+ while (!(Endpoint_IsINReady()));
+ Endpoint_ClearIN();
+ }
+
+ break;
+ }
+}
+
+bool USB_CDC_ConfigureEndpoints(USB_ClassInfo_CDC_t* CDCInterfaceInfo)
+{
+ if (!(Endpoint_ConfigureEndpoint(CDCInterfaceInfo->DataINEndpointNumber, EP_TYPE_BULK,
+ ENDPOINT_DIR_IN, CDCInterfaceInfo->DataINEndpointSize,
+ ENDPOINT_BANK_SINGLE)))
+ {
+ return false;
+ }
+
+ if (!(Endpoint_ConfigureEndpoint(CDCInterfaceInfo->DataOUTEndpointNumber, EP_TYPE_BULK,
+ ENDPOINT_DIR_OUT, CDCInterfaceInfo->DataOUTEndpointSize,
+ ENDPOINT_BANK_SINGLE)))
+ {
+ return false;
+ }
+
+ if (!(Endpoint_ConfigureEndpoint(CDCInterfaceInfo->NotificationEndpointNumber, EP_TYPE_INTERRUPT,
+ ENDPOINT_DIR_IN, CDCInterfaceInfo->NotificationEndpointSize,
+ ENDPOINT_BANK_SINGLE)))
+ {
+ return false;
+ }
+
+ return true;
+}
+
+void USB_CDC_USBTask(USB_ClassInfo_CDC_t* CDCInterfaceInfo)
+{
+ if (!(USB_IsConnected))
+ return;
+
+ Endpoint_SelectEndpoint(CDCInterfaceInfo->DataINEndpointNumber);
+
+ if (!(Endpoint_BytesInEndpoint()))
+ return;
+
+ if (!(Endpoint_IsReadWriteAllowed()))
+ {
+ Endpoint_ClearIN();
+ while (!(Endpoint_IsReadWriteAllowed()));
+ }
+
+ Endpoint_ClearIN();
+}
+
+void USB_CDC_SendString(USB_ClassInfo_CDC_t* CDCInterfaceInfo, char* Data, uint16_t Length)
+{
+ Endpoint_SelectEndpoint(CDCInterfaceInfo->DataINEndpointNumber);
+ Endpoint_Write_Stream_LE(Data, Length, NO_STREAM_CALLBACK);
+}
+
+void USB_CDC_SendByte(USB_ClassInfo_CDC_t* CDCInterfaceInfo, uint8_t Data)
+{
+ Endpoint_SelectEndpoint(CDCInterfaceInfo->DataINEndpointNumber);
+
+ if (!(Endpoint_IsReadWriteAllowed()))
+ {
+ Endpoint_ClearIN();
+ while (!(Endpoint_IsReadWriteAllowed()));
+ }
+
+ Endpoint_Write_Byte(Data);
+}
+
+uint16_t USB_CDC_BytesReceived(USB_ClassInfo_CDC_t* CDCInterfaceInfo)
+{
+ Endpoint_SelectEndpoint(CDCInterfaceInfo->DataOUTEndpointNumber);
+
+ return Endpoint_BytesInEndpoint();
+}
+
+uint8_t USB_CDC_ReceiveByte(USB_ClassInfo_CDC_t* CDCInterfaceInfo)
+{
+ Endpoint_SelectEndpoint(CDCInterfaceInfo->DataOUTEndpointNumber);
+
+ uint8_t DataByte = Endpoint_Read_Byte();
+
+ if (!(Endpoint_BytesInEndpoint()))
+ Endpoint_ClearOUT();
+
+ return DataByte;
+}
+
+void USB_CDC_SendSerialLineStateChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo, uint16_t LineStateMask)
+{
+ Endpoint_SelectEndpoint(CDCInterfaceInfo->NotificationEndpointNumber);
+
+ USB_Request_Header_t Notification = (USB_Request_Header_t)
+ {
+ .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
+ .bRequest = NOTIF_SerialState,
+ .wValue = 0,
+ .wIndex = 0,
+ .wLength = sizeof(uint16_t),
+ };
+
+ Endpoint_Write_Stream_LE(&Notification, sizeof(Notification), NO_STREAM_CALLBACK);
+ Endpoint_Write_Stream_LE(&LineStateMask, sizeof(LineStateMask), NO_STREAM_CALLBACK);
+ Endpoint_ClearIN();
+}
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