/*
LUFA Library
- Copyright (C) Dean Camera, 2011.
-
+ Copyright (C) Dean Camera, 2013.
+
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2013 Dean Camera (dean [at] fourwalledcubicle [dot] com)
- Permission to use, copy, modify, distribute, and sell this
+ Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
+ without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
- The author disclaim all warranties with regard to this
+ The author disclaims all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
{
.Status = TMC_STATUS_SUCCESS,
.TMCVersion = VERSION_BCD(1.00),
-
+
.Interface =
{
.ListenOnly = false,
static uint8_t CurrentTransferTag = 0;
/** Length of last data transfer, for reporting to the host in case an in-progress transfer is aborted */
-static uint32_t LastTransferLength = 0;
+static uint16_t LastTransferLength = 0;
+
+/** Buffer to hold the next message to sent to the TMC host */
+static uint8_t NextResponseBuffer[64];
+
+/** Indicates the length of the next response to send */
+static uint8_t NextResponseLen;
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
SetupHardware();
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
- sei();
-
+ GlobalInterruptEnable();
+
for (;;)
{
TMC_Task();
/* Disable clock division */
clock_prescale_set(clock_div_1);
-
+
/* Hardware Initialization */
LEDs_Init();
USB_Init();
bool ConfigSuccess = true;
/* Setup TMC In, Out and Notification Endpoints */
- ConfigSuccess &= Endpoint_ConfigureEndpoint(TMC_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
- TMC_IO_EPSIZE, ENDPOINT_BANK_SINGLE);
- ConfigSuccess &= Endpoint_ConfigureEndpoint(TMC_IN_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN,
- TMC_IO_EPSIZE, ENDPOINT_BANK_SINGLE);
- ConfigSuccess &= Endpoint_ConfigureEndpoint(TMC_OUT_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT,
- TMC_IO_EPSIZE, ENDPOINT_BANK_SINGLE);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(TMC_NOTIFICATION_EPADDR, EP_TYPE_INTERRUPT, TMC_IO_EPSIZE, 1);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(TMC_IN_EPADDR, EP_TYPE_BULK, TMC_IO_EPSIZE, 1);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(TMC_OUT_EPADDR, EP_TYPE_BULK, TMC_IO_EPSIZE, 1);
/* Indicate endpoint configuration success or failure */
LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
{
/* Indicate that all in-progress/pending data OUT requests should be aborted */
IsTMCBulkOUTReset = true;
-
+
/* Save the split request for later checking when a new request is received */
RequestInProgress = Req_InitiateAbortBulkOut;
}
Endpoint_ClearSETUP();
-
+
/* Write the request response byte */
Endpoint_Write_8(TMCRequestStatus);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
-
+
break;
case Req_CheckAbortBulkOutStatus:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
{
/* Check that an ABORT BULK OUT transaction has been requested and that the request has completed */
if (RequestInProgress != Req_InitiateAbortBulkOut)
- TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS;
+ TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS;
else if (IsTMCBulkOUTReset)
TMCRequestStatus = TMC_STATUS_PENDING;
else
- RequestInProgress = 0;
+ RequestInProgress = 0;
Endpoint_ClearSETUP();
-
+
/* Write the request response bytes */
Endpoint_Write_8(TMCRequestStatus);
Endpoint_Write_16_LE(0);
Endpoint_Write_32_LE(LastTransferLength);
Endpoint_ClearIN();
- Endpoint_ClearStatusStage();
+ Endpoint_ClearStatusStage();
}
-
+
break;
case Req_InitiateAbortBulkIn:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
/* Check that no split transaction is already in progress and the data transfer tag is valid */
if (RequestInProgress != 0)
{
- TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS;
+ TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS;
}
else if (USB_ControlRequest.wValue != CurrentTransferTag)
{
{
/* Indicate that all in-progress/pending data IN requests should be aborted */
IsTMCBulkINReset = true;
-
+
/* Save the split request for later checking when a new request is received */
RequestInProgress = Req_InitiateAbortBulkIn;
}
Endpoint_ClearSETUP();
-
+
/* Write the request response bytes */
Endpoint_Write_8(TMCRequestStatus);
Endpoint_Write_8(CurrentTransferTag);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
-
+
break;
case Req_CheckAbortBulkInStatus:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
RequestInProgress = 0;
Endpoint_ClearSETUP();
-
+
/* Write the request response bytes */
Endpoint_Write_8(TMCRequestStatus);
Endpoint_Write_16_LE(0);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
-
+
break;
case Req_InitiateClear:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
/* Check that no split transaction is already in progress */
if (RequestInProgress != 0)
{
- Endpoint_Write_8(TMC_STATUS_SPLIT_IN_PROGRESS);
+ Endpoint_Write_8(TMC_STATUS_SPLIT_IN_PROGRESS);
}
else
{
/* Indicate that all in-progress/pending data IN and OUT requests should be aborted */
IsTMCBulkINReset = true;
IsTMCBulkOUTReset = true;
-
+
/* Save the split request for later checking when a new request is received */
RequestInProgress = Req_InitiateClear;
}
Endpoint_ClearSETUP();
-
+
/* Write the request response byte */
Endpoint_Write_8(TMCRequestStatus);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
-
+
break;
case Req_CheckClearStatus:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
/* Check that a CLEAR transaction has been requested and that the request has completed */
if (RequestInProgress != Req_InitiateClear)
- TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS;
+ TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS;
else if (IsTMCBulkINReset || IsTMCBulkOUTReset)
TMCRequestStatus = TMC_STATUS_PENDING;
else
/* Write the request response bytes */
Endpoint_Write_8(TMCRequestStatus);
Endpoint_Write_8(0);
-
+
Endpoint_ClearIN();
- Endpoint_ClearStatusStage();
+ Endpoint_ClearStatusStage();
}
-
+
break;
case Req_GetCapabilities:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
-
+
/* Write the device capabilities to the control endpoint */
- Endpoint_Write_Control_Stream_LE(&Capabilities, sizeof(TMC_Capabilities_t));
+ Endpoint_Write_Control_Stream_LE(&Capabilities, sizeof(TMC_Capabilities_t));
Endpoint_ClearOUT();
}
-
+
break;
}
}
+void ProcessSentMessage(uint8_t* const Data, const uint8_t Length)
+{
+ if (strncmp((char*)Data, "*IDN?", 5) == 0)
+ strcpy((char*)NextResponseBuffer, "LUFA TMC DEMO");
+
+ NextResponseLen = strlen((char*)NextResponseBuffer);
+}
+
+uint8_t GetNextMessage(uint8_t* const Data)
+{
+ strcpy((char*)NextResponseBuffer, "LUFA TMC DEMO");
+
+ NextResponseLen = strlen((char*)NextResponseBuffer);
+// ---
+ uint8_t DataLen = MIN(NextResponseLen, 64);
+
+ strlcpy((char*)Data, (char*)NextResponseBuffer, DataLen);
+
+ return DataLen;
+}
+
/** Function to manage TMC data transmission and reception to and from the host. */
void TMC_Task(void)
{
/* Device must be connected and configured for the task to run */
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
-
+
TMC_MessageHeader_t MessageHeader;
- uint16_t BytesTransferred;
-
+ uint8_t MessagePayload[128];
+
/* Try to read in a TMC message from the interface, process if one is available */
if (ReadTMCHeader(&MessageHeader))
{
/* Indicate busy */
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
-
+
switch (MessageHeader.MessageID)
{
case TMC_MESSAGEID_DEV_DEP_MSG_OUT:
- BytesTransferred = 0;
- while (Endpoint_Discard_Stream(MessageHeader.TransferSize, &BytesTransferred) ==
+ LastTransferLength = 0;
+ while (Endpoint_Read_Stream_LE(MessagePayload, MIN(MessageHeader.TransferSize, sizeof(MessagePayload)), &LastTransferLength) ==
ENDPOINT_RWSTREAM_IncompleteTransfer)
{
if (IsTMCBulkOUTReset)
break;
}
- LastTransferLength = BytesTransferred;
-
+
Endpoint_ClearOUT();
+
+ ProcessSentMessage(MessagePayload, LastTransferLength);
break;
case TMC_MESSAGEID_DEV_DEP_MSG_IN:
Endpoint_ClearOUT();
-
- char MessageData[] = "TMC Class Test";
- MessageHeader.TransferSize = strlen(MessageData);
+ MessageHeader.TransferSize = GetNextMessage(MessagePayload);
MessageHeader.MessageIDSpecific.DeviceOUT.LastMessageTransaction = true;
WriteTMCHeader(&MessageHeader);
- BytesTransferred = 0;
- while (Endpoint_Write_Stream_LE(MessageData, MessageHeader.TransferSize, &BytesTransferred) ==
+ LastTransferLength = 0;
+ while (Endpoint_Write_Stream_LE(MessagePayload, MessageHeader.TransferSize, &LastTransferLength) ==
ENDPOINT_RWSTREAM_IncompleteTransfer)
{
if (IsTMCBulkINReset)
break;
}
- LastTransferLength = BytesTransferred;
Endpoint_ClearIN();
break;
LEDs_SetAllLEDs(LEDMASK_USB_READY);
}
-
+
/* All pending data has been processed - reset the data abort flags */
IsTMCBulkINReset = false;
IsTMCBulkOUTReset = false;
*
* \param[out] MessageHeader Pointer to a location where the read header (if any) should be stored
*
- * \return Boolean true if a header was read, false otherwise
+ * \return Boolean \c true if a header was read, \c false otherwise
*/
bool ReadTMCHeader(TMC_MessageHeader_t* const MessageHeader)
{
uint8_t ErrorCode;
/* Select the Data Out endpoint */
- Endpoint_SelectEndpoint(TMC_OUT_EPNUM);
-
+ Endpoint_SelectEndpoint(TMC_OUT_EPADDR);
+
/* Abort if no command has been sent from the host */
if (!(Endpoint_IsOUTReceived()))
return false;
-
+
/* Read in the header of the command from the host */
BytesTransferred = 0;
while ((ErrorCode = Endpoint_Read_Stream_LE(MessageHeader, sizeof(TMC_MessageHeader_t), &BytesTransferred)) ==
/* Store the new command tag value for later use */
CurrentTransferTag = MessageHeader->Tag;
-
+
/* Indicate if the command has been aborted or not */
return (!(IsTMCBulkOUTReset) && (ErrorCode == ENDPOINT_RWSTREAM_NoError));
}
MessageHeader->InverseTag = ~CurrentTransferTag;
/* Select the Data In endpoint */
- Endpoint_SelectEndpoint(TMC_IN_EPNUM);
+ Endpoint_SelectEndpoint(TMC_IN_EPADDR);
/* Send the command header to the host */
BytesTransferred = 0;
/* Indicate if the command has been aborted or not */
return (!(IsTMCBulkINReset) && (ErrorCode == ENDPOINT_RWSTREAM_NoError));
}
+
projects / pub / USBasp.git / blobdiff