Added new stream creation function to the CDC Class drivers, to easily make standard streams from CDC Class driver instances.

4 files changed, 72 insertions, 0 deletions

diff --git a/LUFA/Drivers/USB/Class/Device/CDC.c b/LUFA/Drivers/USB/Class/Device/CDC.c
index dfee2bb1b..d0cb29ecf 100644
--- a/LUFA/Drivers/USB/Class/Device/CDC.c
+++ b/LUFA/Drivers/USB/Class/Device/CDC.c
@@ -234,4 +234,24 @@ void CDC_Device_SendControlLineStateChange(USB_ClassInfo_CDC_Device_t* const CDC
 	Endpoint_ClearIN();

 }

 

+void CDC_Device_CreateStream(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, FILE* Stream)

+{

+	*Stream = (FILE)FDEV_SETUP_STREAM(CDC_Device_putchar, CDC_Device_getchar, _FDEV_SETUP_RW);

+	fdev_set_udata(Stream, CDCInterfaceInfo);

+}

+

+static int CDC_Device_putchar(char c, FILE* Stream)

+{

+	CDC_Device_SendByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream), c);

+	return 0;

+}

+

+static int CDC_Device_getchar(FILE* Stream)

+{

+	if (!(CDC_Device_BytesReceived((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream))))

+	  return -1;

+

+	return CDC_Device_ReceiveByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));

+}

+

 #endif

diff --git a/LUFA/Drivers/USB/Class/Device/CDC.h b/LUFA/Drivers/USB/Class/Device/CDC.h
index 1691857cd..857d07335 100644
--- a/LUFA/Drivers/USB/Class/Device/CDC.h
+++ b/LUFA/Drivers/USB/Class/Device/CDC.h
@@ -48,6 +48,7 @@
 		#include "../../USB.h"

 		#include "../Common/CDC.h"

 

+		#include <stdio.h>

 		#include <string.h>

 

 	/* Enable C linkage for C++ Compilers: */

@@ -209,10 +210,24 @@
 			 */

 			void CDC_Device_SendControlLineStateChange(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);

 

+			/** Creates a standard characer stream for the given CDC Device instance so that it can be used with all the regular

+			 *  functions in the avr-libc <stdio.h> library that accept a FILE stream as a destination (e.g. fprintf).

+			 *

+			 *  \note The created stream can be given as stdout if desired to direct the standard output from all <stdio.h> functions

+			 *        to the given CDC interface.

+			 *

+			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class configuration and state

+			 *  \param[in,out] Stream  Pointer to a FILE structure where the created stream should be placed

+			 */

+			void CDC_Device_CreateStream(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, FILE* Stream);

+

 	/* Private Interface - For use in library only: */

 	#if !defined(__DOXYGEN__)

 		/* Function Prototypes: */

 			#if defined(INCLUDE_FROM_CDC_CLASS_DEVICE_C)

+				static int CDC_Device_putchar(char c, FILE* Stream);

+				static int CDC_Device_getchar(FILE* Stream);

+				

 				void CDC_Device_Event_Stub(void);

 				void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)

 														  ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(CDC_Device_Event_Stub);

diff --git a/LUFA/Drivers/USB/Class/Host/CDC.c b/LUFA/Drivers/USB/Class/Host/CDC.c
index db2f72183..6aceccaf1 100644
--- a/LUFA/Drivers/USB/Class/Host/CDC.c
+++ b/LUFA/Drivers/USB/Class/Host/CDC.c
@@ -334,6 +334,26 @@ uint8_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
 	return ReceivedByte;

 }

 

+void CDC_Host_CreateStream(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, FILE* Stream)

+{

+	*Stream = (FILE)FDEV_SETUP_STREAM(CDC_Host_putchar, CDC_Host_getchar, _FDEV_SETUP_RW);

+	fdev_set_udata(Stream, CDCInterfaceInfo);

+}

+

+static int CDC_Host_putchar(char c, FILE* Stream)

+{

+	CDC_Host_SendByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream), c);

+	return 0;

+}

+

+static int CDC_Host_getchar(FILE* Stream)

+{

+	if (!(CDC_Host_BytesReceived((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))))

+	  return -1;

+

+	return CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));

+}

+

 void CDC_Host_Event_Stub(void)

 {

 

diff --git a/LUFA/Drivers/USB/Class/Host/CDC.h b/LUFA/Drivers/USB/Class/Host/CDC.h
index 6b3a320f0..0ee24be48 100644
--- a/LUFA/Drivers/USB/Class/Host/CDC.h
+++ b/LUFA/Drivers/USB/Class/Host/CDC.h
@@ -47,6 +47,9 @@
 	/* Includes: */

 		#include "../../USB.h"

 		#include "../Common/CDC.h"

+

+		#include <stdio.h>

+		#include <string.h>

 		

 	/* Enable C linkage for C++ Compilers: */

 		#if defined(__cplusplus)

@@ -205,6 +208,17 @@
 			 */

 			uint8_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);

 			

+			/** Creates a standard characer stream for the given CDC Device instance so that it can be used with all the regular

+			 *  functions in the avr-libc <stdio.h> library that accept a FILE stream as a destination (e.g. fprintf).

+			 *

+			 *  \note The created stream can be given as stdout if desired to direct the standard output from all <stdio.h> functions

+			 *        to the given CDC interface.

+			 *

+			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class configuration and state

+			 *  \param[in,out] Stream  Pointer to a FILE structure where the created stream should be placed

+			 */

+			void CDC_Host_CreateStream(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, FILE* Stream);

+

 			/** CDC class driver event for a control line state change on a CDC host interface. This event fires each time the device notifies

 			 *  the host of a control line state change (containing the virtual serial control line states, such as DCD) and may be hooked in the

 			 *  user program by declaring a handler function with the same name and parameters listed here. The new control line states

@@ -231,6 +245,9 @@
 

 		/* Function Prototypes: */

 			#if defined(INCLUDE_FROM_CDC_CLASS_HOST_C)

+				static int CDC_Host_putchar(char c, FILE* Stream);

+				static int CDC_Host_getchar(FILE* Stream);

+

 				void CDC_Host_Event_Stub(void);

 				void EVENT_CDC_Host_ControLineStateChanged(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)

 				                                           ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(CDC_Host_Event_Stub);