/** \ingroup Group_USBClassCDC\r
* @defgroup Group_USBClassCDCHost CDC Class Host 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/Host/CDC.c\r
+ *\r
* \section Module Description\r
* Host Mode USB Class driver framework interface, for the CDC USB Class driver.\r
*\r
\r
/* Public Interface - May be used in end-application: */\r
/* Type Defines: */\r
+ /** Class state structure. An instance of this structure should be made within the user application,\r
+ * and passed to each of the CDC class driver functions as the CDCInterfaceInfo parameter. This\r
+ * stores each CDC interface's configuration and state information.\r
+ */\r
typedef struct\r
{\r
- bool IsActive; /**< Indicates if this class driver is currently attached to the device */\r
- \r
- uint8_t ControlInterfaceNumber; /**< Interface number of the CDC control interface within the device */\r
-\r
- uint8_t DataINPipeNumber; /**< Pipe number of the CDC interface's IN data pipe */\r
- uint16_t DataINPipeSize; /**< Size in bytes of the CDC interface's IN data pipe */\r
-\r
- uint8_t DataOUTPipeNumber; /**< Pipe number of the CDC interface's OUT data pipe */\r
- uint16_t DataOUTPipeSize; /**< Size in bytes of the CDC interface's OUT data pipe */\r
-\r
- uint8_t NotificationEndpointNumber; /**< Pipe 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 states */\r
-\r
+ const struct\r
+ {\r
+ uint8_t DataINPipeNumber; /**< Pipe number of the CDC interface's IN data pipe */\r
+ uint8_t DataOUTPipeNumber; /**< Pipe number of the CDC interface's OUT data pipe */\r
+ uint8_t NotificationPipeNumber; /**< Pipe number of the CDC interface's IN notification endpoint, if used */ \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
+ bool Active; /**< Indicates if the current interface instance is connected to an attached device, valid\r
+ * after \ref HID_Host_ConfigurePipes() is called and the Host state machine is in the\r
+ * Configured state\r
+ */\r
+ uint8_t ControlInterfaceNumber; /**< Interface index of the CDC-ACM control interface within the attached device */\r
+ \r
+ uint16_t DataINPipeSize; /**< Size in bytes of the CDC interface's IN data pipe */\r
+ uint16_t DataOUTPipeSize; /**< Size in bytes of the CDC interface's OUT data pipe */\r
+ uint16_t NotificationPipeSize; /**< Size in bytes of the CDC interface's IN notification pipe, if used */\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
+ * <b>may</b> be set to initial values, but may also be ignored to default to sane values when\r
+ * the interface is enumerated.\r
+ */\r
} USB_ClassInfo_CDC_Host_t;\r
+ \r
+ /* Enums: */\r
+ /** Enum for the possible error codes returned by the \ref CDC_Host_ConfigurePipes() function. */\r
+ enum CDCHost_EnumerationFailure_ErrorCodes_t\r
+ {\r
+ CDC_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully */\r
+ CDC_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor */\r
+ CDC_ENUMERROR_NoCDCInterfaceFound = 2, /**< A compatible CDC interface was not found in the device's Configuration Descriptor */\r
+ CDC_ENUMERROR_EndpointsNotFound = 3, /**< Compatible CDC endpoints were not found in the device's CDC interface */\r
+ };\r
\r
/* Function Prototypes: */\r
- void CDC_Host_Task(void);\r
+ /** General management task for a given CDC host 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 an CDC Class host configuration and state\r
+ */\r
+ void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** Host interface configuration routine, to configure a given CDC host interface instance using the Configuration\r
+ * Descriptor read from an attached USB device. This function automatically updates the given CDC Host instance's\r
+ * state values and configures the pipes required to communicate with the interface if it is found within the device.\r
+ * This should be called once after the stack has enumerated the attached device, while the host state machine is in\r
+ * the Addressed state.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing an CDC Class host configuration and state\r
+ * \param[in] ConfigDescriptorLength Length of the attached device's Configuration Descriptor\r
+ * \param[in] DeviceConfigDescriptor Pointer to a buffer containing the attached device's Configuration Descriptor\r
+ *\r
+ * \return A value from the \ref CDCHost_EnumerationFailure_ErrorCodes_t enum\r
+ */\r
+ uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint16_t ConfigDescriptorLength,\r
+ uint8_t* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1, 3);\r
+ \r
+ /** Sets the line encoding for the attached device's virtual serial port. This should be called when the LineEncoding\r
+ * values of the interface have been changed to push the new settings to the USB device.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state\r
+ */\r
+ uint8_t CDC_Host_SetLineEncoding(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+\r
+ /** Sends a Serial Control Line State Change notification to the device. This should be called when the virtual serial\r
+ * control lines (DTR, RTS, etc.) have changed states. Line states persist until they are cleared via a second\r
+ * notification. This should be called each time the CDC class driver's ControlLineStates.HostToDevice value is updated\r
+ * to push the new states to the USB device.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state\r
+ */\r
+ uint8_t CDC_Host_SendControlLineStateChange(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** Sends a given string to the attached USB device, if connected. If a device 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 host configuration and state\r
+ * \param[in] Data Pointer to the string to send to the device\r
+ * \param[in] Length Size in bytes of the string to send to the device\r
+ */\r
+ void CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, char* Data, uint16_t Length) ATTR_NON_NULL_PTR_ARG(1, 2);\r
+ \r
+ /** Sends a given byte to the attached USB device, 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 host configuration and state\r
+ * \param[in] Data Byte of data to send to the device\r
+ */\r
+ void CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint8_t Data) ATTR_NON_NULL_PTR_ARG(1);\r
+\r
+ /** Determines the number of bytes received by the CDC interface from the device, waiting to be read.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state\r
+ *\r
+ * \return Total number of buffered bytes received from the device\r
+ */\r
+ uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+\r
+ /** Reads a byte of data from the device. If no data is waiting to be read of if a USB device is not connected, the function\r
+ * returns 0. The \ref CDC_Host_BytesReceived() function should be queried before data is recieved to ensure that no data\r
+ * underflow occurs.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state\r
+ *\r
+ * \return Next received byte from the device, or 0 if no data received\r
+ */\r
+ uint8_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** CDC class driver event for a control line state change on a CDC host interface. This event fires each time the device notifies\r
+ * the host of a control line state change (containing the virtual serial control line states, such as DCD) 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.DeviceToHost value inside the CDC host interface structure passed as a parameter, set as\r
+ * a mask of CDC_CONTROL_LINE_IN_* masks.\r
+ *\r
+ * \param[in,out] CDCInterfaceInfo Pointer to a structure containing a CDC Class host configuration and state\r
+ */\r
+ void EVENT_CDC_Host_ControLineStateChanged(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
\r
/* Private Interface - For use in library only: */\r
#if !defined(__DOXYGEN__)\r
/* Macros: */\r
- #define CDC_CONTROL_CLASS 0x02\r
- #define CDC_CONTROL_SUBCLASS 0x02\r
- #define CDC_CONTROL_PROTOCOL 0x01\r
- #define CDC_DATA_CLASS 0x0A\r
- #define CDC_DATA_SUBCLASS 0x00\r
- #define CDC_DATA_PROTOCOL 0x00\r
+ #define CDC_CONTROL_CLASS 0x02\r
+ #define CDC_CONTROL_SUBCLASS 0x02\r
+ #define CDC_CONTROL_PROTOCOL 0x01\r
+ #define CDC_DATA_CLASS 0x0A\r
+ #define CDC_DATA_SUBCLASS 0x00\r
+ #define CDC_DATA_PROTOCOL 0x00\r
+ \r
+ #define CDC_FOUND_DATAPIPE_IN (1 << 0)\r
+ #define CDC_FOUND_DATAPIPE_OUT (1 << 1)\r
+ #define CDC_FOUND_NOTIFICATION_IN (1 << 2)\r
\r
/* Function Prototypes: */\r
#if defined(INCLUDE_FROM_CDC_CLASS_HOST_C)\r
- static uint8_t CDC_Host_ProcessConfigDescriptor(void);\r
- static uint8_t DComp_CDC_Host_NextCDCControlInterface(void* CurrentDescriptor);\r
- static uint8_t DComp_CDC_Host_NextCDCDataInterface(void* CurrentDescriptor);\r
- static uint8_t DComp_CDC_Host_NextInterfaceCDCDataEndpoint(void* CurrentDescriptor);\r
- #endif\r
- \r
+ void CDC_Host_Event_Stub(void);\r
+ void EVENT_CDC_Host_ControLineStateChanged(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo)\r
+ ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(CDC_Host_Event_Stub);\r
+ static uint8_t DComp_CDC_Host_NextCDCControlInterface(void* CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);\r
+ static uint8_t DComp_CDC_Host_NextCDCDataInterface(void* CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);\r
+ static uint8_t DComp_CDC_Host_NextCDCInterfaceEndpoint(void* CurrentDescriptor);\r
+ #endif \r
#endif\r
\r
/* Disable C linkage for C++ Compilers: */\r
projects / pub / USBasp.git / blobdiff