*/\r
TMC_Capabilities_t Capabilities =\r
{\r
- .Status = TMC_REQUEST_STATUS_SUCCESS,\r
+ .Status = TMC_STATUS_SUCCESS,\r
.TMCVersion = VERSION_BCD(1.00),\r
\r
.Interface =\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 bulk IN transfers */\r
-uint8_t NextTransferINTag = 0;\r
-\r
-/** Last used tag value for bulk IN transfers */\r
-uint8_t NextTransferOUTTag = 0;\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
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
LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
}\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_REQUEST_STATUS_SUCCESS;\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
{\r
Endpoint_ClearSETUP();\r
\r
- if (RequestInProgess != 0)\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_REQUEST_STATUS_SPLIT_IN_PROGRESS;\r
+ TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS;\r
}\r
- else if (USB_ControlRequest.wValue != NextTransferOUTTag)\r
+ else if (USB_ControlRequest.wValue != CurrentTransferTag)\r
{\r
- TMCRequestStatus = TMC_REQUEST_STATUS_TRANSFER_NOT_IN_PROGRESS;\r
+ TMCRequestStatus = TMC_STATUS_TRANSFER_NOT_IN_PROGRESS;\r
}\r
else\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
/* Write the request response byte */\r
{\r
Endpoint_ClearSETUP();\r
\r
- if (RequestInProgess != Req_InitiateAbortBulkOut)\r
- TMCRequestStatus = TMC_REQUEST_STATUS_SPLIT_NOT_IN_PROGRESS; \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_REQUEST_STATUS_PENDING;\r
+ TMCRequestStatus = TMC_STATUS_PENDING;\r
else\r
- RequestInProgess = 0; \r
+ RequestInProgress = 0; \r
\r
/* Write the request response bytes */\r
Endpoint_Write_Byte(TMCRequestStatus);\r
{\r
Endpoint_ClearSETUP();\r
\r
- if (RequestInProgess != 0)\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_REQUEST_STATUS_SPLIT_IN_PROGRESS; \r
+ TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS; \r
}\r
- else if (USB_ControlRequest.wValue != NextTransferINTag)\r
+ else if (USB_ControlRequest.wValue != CurrentTransferTag)\r
{\r
- TMCRequestStatus = TMC_REQUEST_STATUS_TRANSFER_NOT_IN_PROGRESS;\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
+ 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
/* Write the request response bytes */\r
Endpoint_Write_Byte(TMCRequestStatus);\r
- Endpoint_Write_Byte(NextTransferINTag);\r
+ Endpoint_Write_Byte(CurrentTransferTag);\r
\r
Endpoint_ClearIN();\r
Endpoint_ClearStatusStage();\r
{\r
Endpoint_ClearSETUP();\r
\r
- if (RequestInProgess != Req_InitiateAbortBulkIn)\r
- TMCRequestStatus = TMC_REQUEST_STATUS_SPLIT_NOT_IN_PROGRESS;\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_REQUEST_STATUS_PENDING;\r
+ TMCRequestStatus = TMC_STATUS_PENDING;\r
else\r
- RequestInProgess = 0;\r
+ RequestInProgress = 0;\r
\r
/* Write the request response bytes */\r
Endpoint_Write_Byte(TMCRequestStatus);\r
{\r
Endpoint_ClearSETUP();\r
\r
- if (RequestInProgess != 0)\r
+ /* Check that no split transaction is already in progress */\r
+ if (RequestInProgress != 0)\r
{\r
- Endpoint_Write_Byte(TMC_REQUEST_STATUS_SPLIT_IN_PROGRESS); \r
+ Endpoint_Write_Byte(TMC_STATUS_SPLIT_IN_PROGRESS); \r
}\r
else\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
/* Write the request response byte */\r
{\r
Endpoint_ClearSETUP();\r
\r
- if (RequestInProgess != Req_InitiateClear)\r
- TMCRequestStatus = TMC_REQUEST_STATUS_SPLIT_NOT_IN_PROGRESS; \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_REQUEST_STATUS_PENDING;\r
+ TMCRequestStatus = TMC_STATUS_PENDING;\r
else\r
- RequestInProgess = 0;\r
+ RequestInProgress = 0;\r
\r
/* Write the request response bytes */\r
Endpoint_Write_Byte(TMCRequestStatus);\r
break;\r
}\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
- Endpoint_SelectEndpoint(TMC_OUT_EPNUM);\r
\r
- if (Endpoint_IsOUTReceived())\r
+ TMC_MessageHeader_t MessageHeader;\r
+ \r
+ /* Check if a TMC packet has been received */\r
+ if (ReadTMCHeader(&MessageHeader))\r
{\r
- // TEMP - Indicate data received\r
- LEDs_SetAllLEDs(LEDS_ALL_LEDS);\r
- Endpoint_ClearOUT();\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
IsTMCBulkOUTReset = false;\r
}\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
projects / pub / USBasp.git / blobdiff