Copyright (C) Dean Camera, 2010.\r
\r
dean [at] fourwalledcubicle [dot] com\r
- www.fourwalledcubicle.com\r
+ www.lufa-lib.org\r
*/\r
\r
/*\r
};\r
\r
/** Current TMC control request that is being processed */\r
-uint8_t RequestInProgess = 0;\r
+uint8_t RequestInProgress = 0;\r
\r
/** Stream callback abort flag for bulk IN data */\r
-bool IsTMCBulkINReset = false;\r
+bool IsTMCBulkINReset = false;\r
\r
/** Stream callback abort flag for bulk OUT data */\r
-bool IsTMCBulkOUTReset = false;\r
+bool IsTMCBulkOUTReset = false;\r
\r
/** Last used tag value for data transfers */\r
uint8_t CurrentTransferTag = 0;\r
*/\r
void EVENT_USB_Device_ConfigurationChanged(void)\r
{\r
- LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
-\r
- /* Setup TMC In and Out Endpoints */\r
- if (!(Endpoint_ConfigureEndpoint(TMC_IN_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_IN, TMC_IO_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
-\r
- if (!(Endpoint_ConfigureEndpoint(TMC_OUT_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_OUT, TMC_IO_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\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
+/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to\r
+ * the device from the USB host before passing along unhandled control requests to the library for processing\r
+ * internally.\r
*/\r
-void EVENT_USB_Device_UnhandledControlRequest(void)\r
+void EVENT_USB_Device_ControlRequest(void)\r
{\r
uint8_t TMCRequestStatus = TMC_STATUS_SUCCESS;\r
\r
case Req_InitiateAbortBulkOut:\r
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))\r
{\r
- Endpoint_ClearSETUP();\r
- \r
/* Check that no split transaction is already in progress and the data transfer tag is valid */\r
- if (RequestInProgess != 0)\r
+ if (RequestInProgress != 0)\r
{\r
TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS;\r
}\r
IsTMCBulkOUTReset = true;\r
\r
/* Save the split request for later checking when a new request is received */\r
- RequestInProgess = Req_InitiateAbortBulkOut;\r
+ RequestInProgress = Req_InitiateAbortBulkOut;\r
}\r
+\r
+ Endpoint_ClearSETUP();\r
\r
/* Write the request response byte */\r
Endpoint_Write_Byte(TMCRequestStatus);\r
case Req_CheckAbortBulkOutStatus:\r
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))\r
{\r
- Endpoint_ClearSETUP();\r
- \r
/* Check that an ABORT BULK OUT transaction has been requested and that the request has completed */\r
- if (RequestInProgess != Req_InitiateAbortBulkOut)\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
- RequestInProgess = 0; \r
- \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
case Req_InitiateAbortBulkIn:\r
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))\r
{\r
- Endpoint_ClearSETUP();\r
- \r
/* Check that no split transaction is already in progress and the data transfer tag is valid */\r
- if (RequestInProgess != 0)\r
+ if (RequestInProgress != 0)\r
{\r
TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS; \r
}\r
else\r
{\r
/* Indicate that all in-progress/pending data IN requests should be aborted */\r
- IsTMCBulkINReset = true;\r
+ IsTMCBulkINReset = true;\r
\r
/* Save the split request for later checking when a new request is received */\r
- RequestInProgess = Req_InitiateAbortBulkIn;\r
+ RequestInProgress = Req_InitiateAbortBulkIn;\r
}\r
+\r
+ Endpoint_ClearSETUP();\r
\r
/* Write the request response bytes */\r
Endpoint_Write_Byte(TMCRequestStatus);\r
case Req_CheckAbortBulkInStatus:\r
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))\r
{\r
- Endpoint_ClearSETUP();\r
- \r
/* Check that an ABORT BULK IN transaction has been requested and that the request has completed */\r
- if (RequestInProgess != Req_InitiateAbortBulkIn)\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
- RequestInProgess = 0;\r
- \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
case Req_InitiateClear:\r
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
{\r
- Endpoint_ClearSETUP();\r
- \r
/* Check that no split transaction is already in progress */\r
- if (RequestInProgess != 0)\r
+ if (RequestInProgress != 0)\r
{\r
Endpoint_Write_Byte(TMC_STATUS_SPLIT_IN_PROGRESS); \r
}\r
IsTMCBulkOUTReset = true;\r
\r
/* Save the split request for later checking when a new request is received */\r
- RequestInProgess = Req_InitiateClear;\r
+ RequestInProgress = Req_InitiateClear;\r
}\r
+\r
+ Endpoint_ClearSETUP();\r
\r
/* Write the request response byte */\r
Endpoint_Write_Byte(TMCRequestStatus);\r
case Req_CheckClearStatus:\r
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
{\r
- Endpoint_ClearSETUP();\r
- \r
/* Check that a CLEAR transaction has been requested and that the request has completed */\r
- if (RequestInProgess != Req_InitiateClear)\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
- RequestInProgess = 0;\r
- \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
case Req_GetCapabilities:\r
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
{\r
- /* Acknowledge the SETUP packet, ready for data transfer */\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
- \r
- /* Finalize the stream transfer to send the last packet or clear the host abort */\r
+ Endpoint_Write_Control_Stream_LE(&Capabilities, sizeof(TMC_Capabilities_t)); \r
Endpoint_ClearOUT();\r
}\r
\r
/* Device must be connected and configured for the task to run */\r
if (USB_DeviceState != DEVICE_STATE_Configured)\r
return;\r
- \r
- Endpoint_SelectEndpoint(TMC_OUT_EPNUM);\r
\r
- if (Endpoint_IsOUTReceived())\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
- TMC_MessageHeader_t MessageHeader;\r
+ /* Indicate busy */\r
+ LEDs_SetAllLEDs(LEDMASK_USB_BUSY);\r
\r
- Endpoint_Read_Stream_LE(&MessageHeader, sizeof(MessageHeader), StreamCallback_AbortOUTOnRequest);\r
- CurrentTransferTag = MessageHeader.Tag;\r
-\r
switch (MessageHeader.MessageID)\r
{\r
case TMC_MESSAGEID_DEV_DEP_MSG_OUT:\r
-\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
- break;\r
- case TMC_MESSAGEID_DEV_VENDOR_OUT:\r
+ MessageHeader.TransferSize = 3;\r
+ WriteTMCHeader(&MessageHeader);\r
\r
+ Endpoint_Write_Stream_LE("TMC", 3, StreamCallback_AbortINOnRequest);\r
+ Endpoint_ClearIN();\r
break;\r
- case TMC_MESSAGEID_DEV_VENDOR_IN:\r
+ default:\r
+ Endpoint_StallTransaction();\r
break;\r
}\r
- \r
- Endpoint_ClearOUT();\r
+\r
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
}\r
\r
/* All pending data has been processed - reset the data abort flags */\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
/* Continue with the current stream operation */\r
return STREAMCALLBACK_Continue;\r
}\r
+
projects / pub / USBasp.git / blobdiff