this software.\r
*/\r
\r
-/** \ingroup Group_USBDeviceClassDrivers\r
- * @defgroup Group_USBClassCDCDevice CDC Device Class Driver - LUFA/Drivers/Class/Device/CDC.h\r
+/** \ingroup Group_USBClassCDC\r
+ * @defgroup Group_USBClassCDCDevice CDC Class Device Mode Driver\r
*\r
* \section Sec_Dependencies Module Source Dependencies\r
* The following files must be built with any user project that uses this module:\r
* - LUFA/Drivers/USB/Class/Device/CDC.c\r
*\r
* \section Module Description\r
- * Functions, macros, variables, enums and types related to the management of USB CDC Class interfaces\r
- * within a USB device, for the implementation of CDC-ACM virtual serial ports.\r
+ * Device Mode USB Class driver framework interface, for the CDC USB Class driver.\r
*\r
* @{\r
*/\r
\r
-#ifndef _CDC_CLASS_H_\r
-#define _CDC_CLASS_H_\r
+#ifndef _CDC_CLASS_DEVICE_H_\r
+#define _CDC_CLASS_DEVICE_H_\r
\r
/* Includes: */\r
#include "../../USB.h"\r
+ #include "../Common/CDC.h"\r
\r
+ #include <stdio.h>\r
#include <string.h>\r
\r
/* Enable C linkage for C++ Compilers: */\r
extern "C" {\r
#endif\r
\r
- /* Macros: */\r
- /** CDC Class specific request to get the current virtual serial port configuration settings. */\r
- #define REQ_GetLineEncoding 0x21\r
+ /* Public Interface - May be used in end-application: */\r
+ /* Type Defines: */\r
+ /** Class state structure. An instance of this structure should be made for each CDC interface\r
+ * within the user application, and passed to each of the CDC class driver functions as the\r
+ * CDCInterfaceInfo parameter. This stores each CDC interface's configuration and state information.\r
+ */\r
+ typedef struct\r
+ {\r
+ const struct\r
+ {\r
+ uint8_t ControlInterfaceNumber; /**< Interface number of the CDC control interface within the device */\r
\r
- /** CDC Class specific request to set the current virtual serial port configuration settings. */\r
- #define REQ_SetLineEncoding 0x20\r
+ uint8_t DataINEndpointNumber; /**< Endpoint number of the CDC interface's IN data endpoint */\r
+ uint16_t DataINEndpointSize; /**< Size in bytes of the CDC interface's IN data endpoint */\r
+ bool DataINEndpointDoubleBank; /** Indicates if the CDC interface's IN data endpoint should use double banking */\r
\r
- /** CDC Class specific request to set the current virtual serial port handshake line states. */\r
- #define REQ_SetControlLineState 0x22\r
- \r
- /** Notification type constant for a change in the virtual serial port handshake line states, for\r
- * use with a USB_Notification_Header_t notification structure when sent to the host via the CDC \r
- * notification endpoint.\r
- */\r
- #define NOTIF_SerialState 0x20\r
-\r
- /** Mask for the DTR handshake line for use with the REQ_SetControlLineState class specific request\r
- * from the host, to indicate that the DTR line state should be high.\r
- */\r
- #define CDC_CONTROL_LINE_OUT_DTR (1 << 0)\r
-\r
- /** Mask for the RTS handshake line for use with the REQ_SetControlLineState class specific request\r
- * from the host, to indicate that theRTS line state should be high.\r
- */\r
- #define CDC_CONTROL_LINE_OUT_RTS (1 << 1)\r
- \r
- /** Mask for the DCD handshake line for use with the a NOTIF_SerialState class specific notification\r
- * from the device to the host, to indicate that the DCD line state is currently high.\r
- */\r
- #define CDC_CONTROL_LINE_IN_DCD (1 << 0)\r
-\r
- /** Mask for the DSR handshake line for use with the a NOTIF_SerialState class specific notification\r
- * from the device to the host, to indicate that the DSR line state is currently high.\r
- */\r
- #define CDC_CONTROL_LINE_IN_DSR (1 << 1)\r
-\r
- /** Mask for the BREAK handshake line for use with the a NOTIF_SerialState class specific notification\r
- * from the device to the host, to indicate that the BREAK line state is currently high.\r
- */\r
- #define CDC_CONTROL_LINE_IN_BREAK (1 << 2)\r
-\r
- /** Mask for the RING handshake line for use with the a NOTIF_SerialState class specific notification\r
- * from the device to the host, to indicate that the RING line state is currently high.\r
- */\r
- #define CDC_CONTROL_LINE_IN_RING (1 << 3)\r
-\r
- /** Mask for use with the a NOTIF_SerialState class specific notification from the device to the host,\r
- * to indicate that a framing error has occurred on the virtual serial port.\r
- */\r
- #define CDC_CONTROL_LINE_IN_FRAMEERROR (1 << 4)\r
-\r
- /** Mask for use with the a NOTIF_SerialState class specific notification from the device to the host,\r
- * to indicate that a parity error has occurred on the virtual serial port.\r
- */\r
- #define CDC_CONTROL_LINE_IN_PARITYERROR (1 << 5)\r
-\r
- /** Mask for use with the a NOTIF_SerialState class specific notification from the device to the host,\r
- * to indicate that a data overrun error has occurred on the virtual serial port.\r
- */\r
- #define CDC_CONTROL_LINE_IN_OVERRUNERROR (1 << 6)\r
- \r
- /** Macro to define a CDC class-specific functional descriptor. CDC functional descriptors have a\r
- * uniform structure but variable sized data payloads, thus cannot be represented accurately by\r
- * a single typedef struct. A macro is used instead so that functional descriptors can be created\r
- * easily by specifying the size of the payload. This allows sizeof() to work correctly.\r
- *\r
- * \param DataSize Size in bytes of the CDC functional descriptor's data payload\r
- */\r
- #define CDC_FUNCTIONAL_DESCRIPTOR(DataSize) \\r
- struct \\r
- { \\r
- USB_Descriptor_Header_t Header; \\r
- uint8_t SubType; \\r
- uint8_t Data[DataSize]; \\r
- }\r
-\r
- /* Enums: */\r
- /** Enum for the possible line encoding formats of a virtual serial port. */\r
- enum CDCDevice_CDC_LineCodingFormats_t\r
- {\r
- CDC_LINEENCODING_OneStopBit = 0, /**< Each frame contains one stop bit */\r
- CDC_LINEENCODING_OneAndAHalfStopBits = 1, /**< Each frame contains one and a half stop bits */\r
- CDC_LINEENCODING_TwoStopBits = 2, /**< Each frame contains two stop bits */\r
- };\r
- \r
- /** Enum for the possible line encoding parity settings of a virtual serial port. */\r
- enum CDCDevice_LineCodingParity_t\r
- {\r
- CDC_PARITY_None = 0, /**< No parity bit mode on each frame */\r
- CDC_PARITY_Odd = 1, /**< Odd parity bit mode on each frame */\r
- CDC_PARITY_Even = 2, /**< Even parity bit mode on each frame */\r
- CDC_PARITY_Mark = 3, /**< Mark parity bit mode on each frame */\r
- CDC_PARITY_Space = 4, /**< Space parity bit mode on each frame */\r
- };\r
-\r
- /* Type Defines: */\r
- /** Type define for the virtual serial port line encoding settings, for storing the current USART configuration\r
- * as set by the host via a class specific request.\r
- */\r
- typedef struct\r
- {\r
- uint8_t ControlInterfaceNumber; /**< Interface number of the CDC control interface within the device */\r
-\r
- uint8_t DataINEndpointNumber; /**< Endpoint number of the CDC interface's IN data endpoint */\r
- uint16_t DataINEndpointSize; /**< Size in bytes of the CDC interface's IN data endpoint */\r
-\r
- uint8_t DataOUTEndpointNumber; /**< Endpoint number of the CDC interface's OUT data endpoint */\r
- uint16_t DataOUTEndpointSize; /**< Size in bytes of the CDC interface's OUT data endpoint */\r
-\r
- uint8_t NotificationEndpointNumber; /**< Endpoint number of the CDC interface's IN notification endpoint, if used */\r
- uint16_t NotificationEndpointSize; /**< Size in bytes of the CDC interface's IN notification endpoint, if used */\r
-\r
- uint8_t ControlLineState; /**< Current control line state, as set by the host */\r
-\r
- struct\r
- {\r
- uint32_t BaudRateBPS; /**< Baud rate of the virtual serial port, in bits per second */\r
- uint8_t CharFormat; /**< Character format of the virtual serial port, a value from the\r
- * CDCDevice_CDC_LineCodingFormats_t enum\r
- */\r
- uint8_t ParityType; /**< Parity setting of the virtual serial port, a value from the\r
- * CDCDevice_LineCodingParity_t enum\r
- */\r
- uint8_t DataBits; /**< Bits of data per character of the virtual serial port */\r
- } LineEncoding;\r
- } USB_ClassInfo_CDC_t;\r
+ uint8_t DataOUTEndpointNumber; /**< Endpoint number of the CDC interface's OUT data endpoint */\r
+ uint16_t DataOUTEndpointSize; /**< Size in bytes of the CDC interface's OUT data endpoint */\r
+ bool DataOUTEndpointDoubleBank; /** Indicates if the CDC interface's OUT data endpoint should use double banking */\r
+\r
+ uint8_t NotificationEndpointNumber; /**< Endpoint number of the CDC interface's IN notification endpoint, if used */\r
+ uint16_t NotificationEndpointSize; /**< Size in bytes of the CDC interface's IN notification endpoint, if used */\r
+ bool NotificationEndpointDoubleBank; /** Indicates if the CDC interface's notification endpoint should use double banking */\r
+ } Config; /**< Config data for the USB class interface within the device. All elements in this section\r
+ * <b>must</b> be set or the interface will fail to enumerate and operate correctly.\r
+ */\r
+ struct\r
+ {\r
+ struct\r
+ {\r
+ uint8_t HostToDevice; /**< Control line states from the host to device, as a set of CDC_CONTROL_LINE_OUT_*\r
+ * masks.\r
+ */\r
+ uint8_t DeviceToHost; /**< Control line states from the device to host, as a set of CDC_CONTROL_LINE_IN_*\r
+ * masks.\r
+ */\r
+ } ControlLineStates;\r
+\r
+ struct\r
+ {\r
+ uint32_t BaudRateBPS; /**< Baud rate of the virtual serial port, in bits per second */\r
+ uint8_t CharFormat; /**< Character format of the virtual serial port, a value from the\r
+ * CDCDevice_CDC_LineCodingFormats_t enum\r
+ */\r
+ uint8_t ParityType; /**< Parity setting of the virtual serial port, a value from the\r
+ * CDCDevice_LineCodingParity_t enum\r
+ */\r
+ uint8_t DataBits; /**< Bits of data per character of the virtual serial port */\r
+ } LineEncoding; \r
+ } State; /**< State data for the USB class interface within the device. All elements in this section\r
+ * are reset to their defaults when the interface is enumerated.\r
+ */\r
+ } USB_ClassInfo_CDC_Device_t;\r
\r
- /* Function Prototypes: */\r
- #if defined(INCLUDE_FROM_CDC_CLASS_C)\r
- void USB_CDC_Event_Stub(void);\r
- void EVENT_USB_CDC_LineEncodingChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo)\r
- ATTR_WEAK ATTR_ALIAS(USB_CDC_Event_Stub);\r
- void EVENT_USB_CDC_ControLineStateChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo)\r
- ATTR_WEAK ATTR_ALIAS(USB_CDC_Event_Stub);\r
- #endif\r
- \r
- /** Configures the endpoints of a given CDC interface, ready for use. This should be linked to the library\r
- * \ref EVENT_USB_ConfigurationChanged() event so that the endpoints are configured when the configuration containing the\r
- * given CDC interface is selected.\r
- *\r
- * \param CDCInterfaceInfo Pointer to a structure containing an CDC Class configuration and state.\r
- *\r
- * \return Boolean true if the endpoints were sucessfully configured, false otherwise\r
- */\r
- bool USB_CDC_ConfigureEndpoints(USB_ClassInfo_CDC_t* CDCInterfaceInfo);\r
-\r
- /** Processes incomming control requests from the host, that are directed to the given CDC class interface. This should be\r
- * linked to the library \ref EVENT_USB_UnhandledControlPacket() event.\r
- *\r
- * \param CDCInterfaceInfo Pointer to a structure containing an CDC Class configuration and state.\r
- */\r
- void USB_CDC_ProcessControlPacket(USB_ClassInfo_CDC_t* CDCInterfaceInfo);\r
-\r
- /** General management task for a given CDC class interface, required for the correct operation of the interface. This should\r
- * be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().\r
- *\r
- * \param CDCInterfaceInfo Pointer to a structure containing an CDC Class configuration and state.\r
- */\r
- void USB_CDC_USBTask(USB_ClassInfo_CDC_t* CDCInterfaceInfo);\r
-\r
- void EVENT_USB_CDC_LineEncodingChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo);\r
- void EVENT_USB_CDC_ControLineStateChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo);\r
-\r
- void USB_CDC_SendString(USB_ClassInfo_CDC_t* CDCInterfaceInfo, char* Data, uint16_t Length);\r
- void USB_CDC_SendByte(USB_ClassInfo_CDC_t* CDCInterfaceInfo, uint8_t Data);\r
- uint16_t USB_CDC_BytesReceived(USB_ClassInfo_CDC_t* CDCInterfaceInfo);\r
- uint8_t USB_CDC_ReceiveByte(USB_ClassInfo_CDC_t* CDCInterfaceInfo);\r
- void USB_CDC_SendSerialLineStateChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo, uint16_t LineStateMask);\r
+ /* Function Prototypes: */ \r
+ /** Configures the endpoints of a given CDC interface, ready for use. This should be linked to the library\r
+ * \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration containing\r
+ * the given CDC interface is selected.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ *\r
+ * \return Boolean true if the endpoints were successfully configured, false otherwise\r
+ */\r
+ bool CDC_Device_ConfigureEndpoints(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+\r
+ /** Processes incoming control requests from the host, that are directed to the given CDC class interface. This should be\r
+ * linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ */\r
+ void CDC_Device_ProcessControlRequest(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+\r
+ /** General management task for a given CDC class interface, required for the correct operation of the interface. This should\r
+ * be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ */\r
+ void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+\r
+ /** CDC class driver event for a line encoding change on a CDC interface. This event fires each time the host requests a\r
+ * line encoding change (containing the serial parity, baud and other configuration information) and may be hooked in the\r
+ * user program by declaring a handler function with the same name and parameters listed here. The new line encoding\r
+ * settings are available in the LineEncoding structure inside the CDC interface structure passed as a parameter.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ */\r
+ void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** CDC class driver event for a control line state change on a CDC interface. This event fires each time the host requests a\r
+ * control line state change (containing the virtual serial control line states, such as DTR) and may be hooked in the\r
+ * user program by declaring a handler function with the same name and parameters listed here. The new control line states\r
+ * are available in the ControlLineStates.HostToDevice value inside the CDC interface structure passed as a parameter, set as\r
+ * a mask of CDC_CONTROL_LINE_OUT_* masks.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ */\r
+ void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+\r
+ /** Sends a given string to the attached USB host, if connected. If a host is not connected when the function is called, the\r
+ * string is discarded.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ * \param[in] Data Pointer to the string to send to the host\r
+ * \param[in] Length Size in bytes of the string to send to the host\r
+ *\r
+ * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum\r
+ */\r
+ uint8_t CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo, char* const Data, const uint16_t Length)\r
+ ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);\r
+ \r
+ /** Sends a given byte to the attached USB host, if connected. If a host is not connected when the function is called, the\r
+ * byte is discarded.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ * \param[in] Data Byte of data to send to the host\r
+ *\r
+ * \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum\r
+ */\r
+ uint8_t CDC_Device_SendByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo, const uint8_t Data) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** Determines the number of bytes received by the CDC interface from the host, waiting to be read.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ *\r
+ * \return Total number of buffered bytes received from the host\r
+ */\r
+ uint16_t CDC_Device_BytesReceived(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** Reads a byte of data from the host. If no data is waiting to be read of if a USB host is not connected, the function\r
+ * returns 0. The \ref CDC_Device_BytesReceived() function should be queried before data is received to ensure that no data\r
+ * underflow occurs.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ *\r
+ * \return Next received byte from the host, or 0 if no data received\r
+ */\r
+ uint8_t CDC_Device_ReceiveByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** Flushes any data waiting to be sent, ensuring that the send buffer is cleared.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ *\r
+ * \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum\r
+ */\r
+ uint8_t CDC_Device_Flush(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** Sends a Serial Control Line State Change notification to the host. This should be called when the virtual serial\r
+ * control lines (DCD, DSR, etc.) have changed states, or to give BREAK notifications to the host. Line states persist\r
+ * until they are cleared via a second notification. This should be called each time the CDC class driver's \r
+ * ControlLineStates.DeviceToHost value is updated to push the new states to the USB host.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ */\r
+ void CDC_Device_SendControlLineStateChange(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
\r
+ /** Creates a standard characer stream for the given CDC Device instance so that it can be used with all the regular\r
+ * functions in the avr-libc <stdio.h> library that accept a FILE stream as a destination (e.g. fprintf). The created\r
+ * stream is bidirectional and can be used for both input and output functions.\r
+ *\r
+ * Reading data from this stream is non-blocking, i.e. in most instances, complete strings cannot be read in by a single\r
+ * fetch, as the endpoint will not be ready at some point in the transmission, aborting the transfer. However, this may\r
+ * be used when the read data is processed byte-per-bye (via getc()) or when the user application will implement its own\r
+ * line buffering.\r
+ *\r
+ * \note The created stream can be given as stdout if desired to direct the standard output from all <stdio.h> functions\r
+ * to the given CDC interface.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ * \param[in,out] Stream Pointer to a FILE structure where the created stream should be placed\r
+ */\r
+ void CDC_Device_CreateStream(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, FILE* Stream);\r
+\r
+ /** Identical to CDC_Device_CreateStream(), except that reads are blocking until the calling stream function terminates\r
+ * the transfer. While blocking, the USB and CDC service tasks are called repeatedly to maintain USB communications.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
+ * \param[in,out] Stream Pointer to a FILE structure where the created stream should be placed\r
+ */\r
+ void CDC_Device_CreateBlockingStream(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, FILE* Stream);\r
+\r
+ /* Private Interface - For use in library only: */\r
+ #if !defined(__DOXYGEN__)\r
+ /* Function Prototypes: */\r
+ #if defined(INCLUDE_FROM_CDC_CLASS_DEVICE_C)\r
+ static int CDC_Device_putchar(char c, FILE* Stream);\r
+ static int CDC_Device_getchar(FILE* Stream);\r
+ static int CDC_Device_getchar_Blocking(FILE* Stream);\r
+ \r
+ void CDC_Device_Event_Stub(void);\r
+ void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)\r
+ ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(CDC_Device_Event_Stub);\r
+ void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)\r
+ ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(CDC_Device_Event_Stub);\r
+ #endif\r
+\r
+ #endif\r
+ \r
/* Disable C linkage for C++ Compilers: */\r
#if defined(__cplusplus)\r
}\r
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