-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2010.\r
- \r
- dean [at] fourwalledcubicle [dot] com\r
- www.fourwalledcubicle.com\r
-*/\r
-\r
-/*\r
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, distribute, and sell this \r
- software and its documentation for any purpose is hereby granted\r
- without fee, provided that the above copyright notice appear in \r
- all copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting \r
- documentation, and that the name of the author not be used in \r
- advertising or publicity pertaining to distribution of the \r
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-#include "TestAndMeasurement.h"\r
-\r
-/** Contains the (usually static) capabilities of the TMC device. This table is requested by the\r
- * host upon enumeration to give it information on what features of the Test and Measurement USB\r
- * Class the device supports.\r
- */\r
-TMC_Capabilities_t Capabilities =\r
- {\r
- .Status = TMC_STATUS_SUCCESS,\r
- .TMCVersion = VERSION_BCD(1.00),\r
- \r
- .Interface =\r
- {\r
- .ListenOnly = false,\r
- .TalkOnly = false,\r
- .PulseIndicateSupported = false,\r
- },\r
-\r
- .Device =\r
- {\r
- .SupportsAbortINOnMatch = false,\r
- },\r
- };\r
-\r
-/** Current TMC control request that is being processed */\r
-uint8_t RequestInProgress = 0;\r
-\r
-/** Stream callback abort flag for bulk IN data */\r
-bool IsTMCBulkINReset = false;\r
-\r
-/** Stream callback abort flag for bulk OUT data */\r
-bool IsTMCBulkOUTReset = false;\r
-\r
-/** Last used tag value for data transfers */\r
-uint8_t CurrentTransferTag = 0;\r
-\r
-\r
-/** Main program entry point. This routine contains the overall program flow, including initial\r
- * setup of all components and the main program loop.\r
- */\r
-int main(void)\r
-{\r
- SetupHardware();\r
-\r
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
- sei();\r
- \r
- for (;;)\r
- {\r
- TMC_Task();\r
- USB_USBTask();\r
- }\r
-}\r
-\r
-/** Configures the board hardware and chip peripherals for the demo's functionality. */\r
-void SetupHardware(void)\r
-{\r
- /* Disable watchdog if enabled by bootloader/fuses */\r
- MCUSR &= ~(1 << WDRF);\r
- wdt_disable();\r
-\r
- /* Disable clock division */\r
- clock_prescale_set(clock_div_1);\r
- \r
- /* Hardware Initialization */\r
- LEDs_Init();\r
- USB_Init();\r
-}\r
-\r
-/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and\r
- * starts the library USB task to begin the enumeration and USB management process.\r
- */\r
-void EVENT_USB_Device_Connect(void)\r
-{\r
- LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r
-}\r
-\r
-/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via\r
- * the status LEDs and stops the USB management and CDC management tasks.\r
- */\r
-void EVENT_USB_Device_Disconnect(void)\r
-{\r
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
-}\r
-\r
-/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration\r
- * of the USB device after enumeration - the device endpoints are configured and the CDC management task started.\r
- */\r
-void EVENT_USB_Device_ConfigurationChanged(void)\r
-{\r
- bool ConfigSuccess = true;\r
-\r
- /* Setup TMC In, Out and Notification Endpoints */\r
- ConfigSuccess &= Endpoint_ConfigureEndpoint(TMC_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,\r
- TMC_IO_EPSIZE, ENDPOINT_BANK_SINGLE);\r
- ConfigSuccess &= Endpoint_ConfigureEndpoint(TMC_IN_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN,\r
- TMC_IO_EPSIZE, ENDPOINT_BANK_SINGLE);\r
- ConfigSuccess &= Endpoint_ConfigureEndpoint(TMC_OUT_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT,\r
- TMC_IO_EPSIZE, ENDPOINT_BANK_SINGLE);\r
-\r
- /* Indicate endpoint configuration success or failure */\r
- LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);\r
-}\r
-\r
-/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific\r
- * control requests that are not handled internally by the USB library (including the CDC control commands,\r
- * which are all issued via the control endpoint), so that they can be handled appropriately for the application.\r
- */\r
-void EVENT_USB_Device_UnhandledControlRequest(void)\r
-{\r
- uint8_t TMCRequestStatus = TMC_STATUS_SUCCESS;\r
-\r
- /* Process TMC specific control requests */\r
- switch (USB_ControlRequest.bRequest)\r
- {\r
- case Req_InitiateAbortBulkOut:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))\r
- {\r
- /* Check that no split transaction is already in progress and the data transfer tag is valid */\r
- if (RequestInProgress != 0)\r
- {\r
- TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS;\r
- }\r
- else if (USB_ControlRequest.wValue != CurrentTransferTag)\r
- {\r
- TMCRequestStatus = TMC_STATUS_TRANSFER_NOT_IN_PROGRESS;\r
- }\r
- else\r
- {\r
- /* Indicate that all in-progress/pending data OUT requests should be aborted */\r
- IsTMCBulkOUTReset = true;\r
- \r
- /* Save the split request for later checking when a new request is received */\r
- RequestInProgress = Req_InitiateAbortBulkOut;\r
- }\r
-\r
- Endpoint_ClearSETUP();\r
- \r
- /* Write the request response byte */\r
- Endpoint_Write_Byte(TMCRequestStatus);\r
-\r
- Endpoint_ClearIN();\r
- Endpoint_ClearStatusStage();\r
- }\r
- \r
- break;\r
- case Req_CheckAbortBulkOutStatus:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))\r
- {\r
- /* Check that an ABORT BULK OUT transaction has been requested and that the request has completed */\r
- if (RequestInProgress != Req_InitiateAbortBulkOut)\r
- TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS; \r
- else if (IsTMCBulkOUTReset)\r
- TMCRequestStatus = TMC_STATUS_PENDING;\r
- else\r
- RequestInProgress = 0; \r
-\r
- Endpoint_ClearSETUP();\r
- \r
- /* Write the request response bytes */\r
- Endpoint_Write_Byte(TMCRequestStatus);\r
- Endpoint_Write_Word_LE(0);\r
- Endpoint_Write_DWord_LE(0); // TODO - Last transfer length\r
-\r
- Endpoint_ClearIN();\r
- Endpoint_ClearStatusStage(); \r
- }\r
- \r
- break;\r
- case Req_InitiateAbortBulkIn:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))\r
- {\r
- /* Check that no split transaction is already in progress and the data transfer tag is valid */\r
- if (RequestInProgress != 0)\r
- {\r
- TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS; \r
- }\r
- else if (USB_ControlRequest.wValue != CurrentTransferTag)\r
- {\r
- TMCRequestStatus = TMC_STATUS_TRANSFER_NOT_IN_PROGRESS;\r
- }\r
- else\r
- {\r
- /* Indicate that all in-progress/pending data IN requests should be aborted */\r
- IsTMCBulkINReset = true;\r
- \r
- /* Save the split request for later checking when a new request is received */\r
- RequestInProgress = Req_InitiateAbortBulkIn;\r
- }\r
-\r
- Endpoint_ClearSETUP();\r
- \r
- /* Write the request response bytes */\r
- Endpoint_Write_Byte(TMCRequestStatus);\r
- Endpoint_Write_Byte(CurrentTransferTag);\r
-\r
- Endpoint_ClearIN();\r
- Endpoint_ClearStatusStage();\r
- }\r
- \r
- break;\r
- case Req_CheckAbortBulkInStatus:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))\r
- {\r
- /* Check that an ABORT BULK IN transaction has been requested and that the request has completed */\r
- if (RequestInProgress != Req_InitiateAbortBulkIn)\r
- TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS;\r
- else if (IsTMCBulkINReset)\r
- TMCRequestStatus = TMC_STATUS_PENDING;\r
- else\r
- RequestInProgress = 0;\r
-\r
- Endpoint_ClearSETUP();\r
- \r
- /* Write the request response bytes */\r
- Endpoint_Write_Byte(TMCRequestStatus);\r
- Endpoint_Write_Word_LE(0);\r
- Endpoint_Write_DWord_LE(0); // TODO - Last transfer length\r
-\r
- Endpoint_ClearIN();\r
- Endpoint_ClearStatusStage();\r
- }\r
- \r
- break;\r
- case Req_InitiateClear:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
- {\r
- /* Check that no split transaction is already in progress */\r
- if (RequestInProgress != 0)\r
- {\r
- Endpoint_Write_Byte(TMC_STATUS_SPLIT_IN_PROGRESS); \r
- }\r
- else\r
- {\r
- /* Indicate that all in-progress/pending data IN and OUT requests should be aborted */\r
- IsTMCBulkINReset = true;\r
- IsTMCBulkOUTReset = true;\r
- \r
- /* Save the split request for later checking when a new request is received */\r
- RequestInProgress = Req_InitiateClear;\r
- }\r
-\r
- Endpoint_ClearSETUP();\r
- \r
- /* Write the request response byte */\r
- Endpoint_Write_Byte(TMCRequestStatus);\r
-\r
- Endpoint_ClearIN();\r
- Endpoint_ClearStatusStage();\r
- }\r
- \r
- break;\r
- case Req_CheckClearStatus:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
- {\r
- /* Check that a CLEAR transaction has been requested and that the request has completed */\r
- if (RequestInProgress != Req_InitiateClear)\r
- TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS; \r
- else if (IsTMCBulkINReset || IsTMCBulkOUTReset)\r
- TMCRequestStatus = TMC_STATUS_PENDING;\r
- else\r
- RequestInProgress = 0;\r
-\r
- Endpoint_ClearSETUP();\r
-\r
- /* Write the request response bytes */\r
- Endpoint_Write_Byte(TMCRequestStatus);\r
- Endpoint_Write_Byte(0);\r
- \r
- Endpoint_ClearIN();\r
- Endpoint_ClearStatusStage(); \r
- }\r
- \r
- break;\r
- case Req_GetCapabilities:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
- {\r
- Endpoint_ClearSETUP();\r
- \r
- /* Write the device capabilities to the control endpoint */\r
- Endpoint_Write_Control_Stream_LE(&Capabilities, sizeof(TMC_Capabilities_t)); \r
- Endpoint_ClearOUT();\r
- }\r
- \r
- break;\r
- }\r
-}\r
-\r
-/** Function to manage TMC data transmission and reception to and from the host. */\r
-void TMC_Task(void)\r
-{\r
- /* Device must be connected and configured for the task to run */\r
- if (USB_DeviceState != DEVICE_STATE_Configured)\r
- return;\r
- \r
- TMC_MessageHeader_t MessageHeader;\r
- \r
- /* Try to read in a TMC message from the interface, process if one is available */\r
- if (ReadTMCHeader(&MessageHeader))\r
- {\r
- /* Indicate busy */\r
- LEDs_SetAllLEDs(LEDMASK_USB_BUSY);\r
- \r
- switch (MessageHeader.MessageID)\r
- {\r
- case TMC_MESSAGEID_DEV_DEP_MSG_OUT:\r
- Endpoint_Discard_Stream(MessageHeader.TransferSize, StreamCallback_AbortOUTOnRequest);\r
- Endpoint_ClearOUT();\r
- break;\r
- case TMC_MESSAGEID_DEV_DEP_MSG_IN:\r
- Endpoint_ClearOUT();\r
-\r
- MessageHeader.TransferSize = 3;\r
- WriteTMCHeader(&MessageHeader);\r
-\r
- Endpoint_Write_Stream_LE("TMC", 3, StreamCallback_AbortINOnRequest);\r
- Endpoint_ClearIN();\r
- break;\r
- default:\r
- Endpoint_StallTransaction();\r
- break;\r
- }\r
-\r
- LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
- }\r
- \r
- /* All pending data has been processed - reset the data abort flags */\r
- IsTMCBulkINReset = false;\r
- IsTMCBulkOUTReset = false;\r
-}\r
-\r
-/** Attempts to read in the TMC message header from the TMC interface.\r
- *\r
- * \param[out] MessageHeader Pointer to a location where the read header (if any) should be stored\r
- *\r
- * \return Boolean true if a header was read, false otherwise\r
- */\r
-bool ReadTMCHeader(TMC_MessageHeader_t* const MessageHeader)\r
-{\r
- /* Select the Data Out endpoint */\r
- Endpoint_SelectEndpoint(TMC_OUT_EPNUM);\r
- \r
- /* Abort if no command has been sent from the host */\r
- if (!(Endpoint_IsOUTReceived()))\r
- return false;\r
- \r
- /* Read in the header of the command from the host */\r
- Endpoint_Read_Stream_LE(MessageHeader, sizeof(TMC_MessageHeader_t), StreamCallback_AbortOUTOnRequest);\r
-\r
- /* Store the new command tag value for later use */\r
- CurrentTransferTag = MessageHeader->Tag;\r
- \r
- /* Indicate if the command has been aborted or not */\r
- return !(IsTMCBulkOUTReset);\r
-}\r
-\r
-bool WriteTMCHeader(TMC_MessageHeader_t* const MessageHeader)\r
-{\r
- /* Compute the next transfer tag value, must be between 1 and 254 */\r
- if (++CurrentTransferTag == 0xFF)\r
- CurrentTransferTag = 1;\r
-\r
- /* Set the message tag of the command header */\r
- MessageHeader->Tag = CurrentTransferTag;\r
- MessageHeader->InverseTag = ~CurrentTransferTag;\r
-\r
- /* Select the Data In endpoint */\r
- Endpoint_SelectEndpoint(TMC_IN_EPNUM);\r
-\r
- /* Send the command header to the host */\r
- Endpoint_Write_Stream_LE(MessageHeader, sizeof(TMC_MessageHeader_t), StreamCallback_AbortINOnRequest);\r
-\r
- /* Indicate if the command has been aborted or not */\r
- return !(IsTMCBulkINReset);\r
-}\r
-\r
-/** Stream callback function for the Endpoint stream write functions. This callback will abort the current stream transfer\r
- * if a TMC Abort Bulk IN request has been issued to the control endpoint.\r
- */\r
-uint8_t StreamCallback_AbortINOnRequest(void)\r
-{ \r
- /* Abort if a TMC Bulk Data IN abort was received */\r
- if (IsTMCBulkINReset)\r
- return STREAMCALLBACK_Abort;\r
- \r
- /* Continue with the current stream operation */\r
- return STREAMCALLBACK_Continue;\r
-}\r
-\r
-/** Stream callback function for the Endpoint stream read functions. This callback will abort the current stream transfer\r
- * if a TMC Abort Bulk OUT request has been issued to the control endpoint.\r
- */\r
-uint8_t StreamCallback_AbortOUTOnRequest(void)\r
-{ \r
- /* Abort if a TMC Bulk Data IN abort was received */\r
- if (IsTMCBulkOUTReset)\r
- return STREAMCALLBACK_Abort;\r
- \r
- /* Continue with the current stream operation */\r
- return STREAMCALLBACK_Continue;\r
-}\r
projects / pub / USBasp.git / blobdiff