/** \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
* Device Mode USB Class driver framework interface, for the CDC USB Class driver.\r
*\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
\r
/* Public Interface - May be used in end-application: */\r
/* Type Defines: */\r
- /** Configuration information structure for \ref USB_ClassInfo_CDC_Device_t CDC device interface structures. */\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
- uint8_t ControlInterfaceNumber; /**< Interface number of the CDC control interface within the device */\r
+ const 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
+ 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
- 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
- } USB_ClassInfo_CDC_Device_Config_t;\r
- \r
- /** Current State information structure for \ref USB_ClassInfo_CDC_Device_t CDC device interface structures. */\r
- typedef struct\r
- {\r
- uint8_t ControlLineState; /**< Current control line states, as set by the host */\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
- 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_Device_State_t;\r
- \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 USB_ClassInfo_CDC_Device_Config_t Config; /**< Config data for the USB class interface within\r
- * the device. All elements in this section\r
- * <b>must</b> be set or the interface will fail\r
- * to enumerate and operate correctly.\r
- */\r
- \r
- USB_ClassInfo_CDC_Device_State_t State; /**< State data for the USB class interface within\r
- * the device. All elements in this section\r
- * <b>may</b> be set to initial values, but may\r
- * also be ignored to default to sane values when\r
- * the interface is enumerated.\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
/** 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
+ * \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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\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 sucessfully configured, false otherwise\r
+ * \return Boolean true if the endpoints were successfully configured, false otherwise\r
*/\r
- bool CDC_Device_ConfigureEndpoints(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo);\r
+ bool CDC_Device_ConfigureEndpoints(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\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
+ /** 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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state\r
*/\r
- void CDC_Device_ProcessControlPacket(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo);\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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\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* CDCInterfaceInfo);\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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\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* CDCInterfaceInfo);\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 ControlLineState value inside the CDC interface structure passed as a parameter, set as a mask of\r
- * CDC_CONTROL_LINE_OUT_* masks.\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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\r
- */ \r
- void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo);\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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\r
- * \param Data Pointer to the string to send to the host\r
- * \param Length Size in bytes of the string to send to the host\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
- void CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, char* Data, uint16_t Length);\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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\r
- * \param Data Byte of data to send to the host\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
- void CDC_Device_SendByte(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, uint8_t Data);\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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\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* CDCInterfaceInfo);\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 USB_CDC_BytesReceived() function should be queried before data is recieved to ensure that no data\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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\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* CDCInterfaceInfo);\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 control\r
- * lines (DCD, DSR, etc.) have changed states, or to give BREAK notfications to the host. Line states persist until they are\r
- * cleared via a second notification.\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 CDCInterfaceInfo Pointer to a structure containing a CDC Class configuration and state.\r
- * \param LineStateMask Mask of CDC_CONTROL_LINE_IN_* masks giving the current control line states\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_SendControlLineStateChange(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, uint16_t LineStateMask);\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* CDCInterfaceInfo)\r
- ATTR_WEAK ATTR_ALIAS(CDC_Device_Event_Stub);\r
- void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo)\r
- ATTR_WEAK ATTR_ALIAS(CDC_Device_Event_Stub);\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
projects / pub / USBasp.git / blobdiff