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Add TMC header read and write functions, so that TMC data can now be exchanged in both directions.

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Minor update to the LowLevel MassStorage device demo, so that the ReadInCommandBlock() performs the data OUT endpoint selection and packet arrival test.
pull/1469/head
Dean Camera 15 years ago
parent 059307d89c
commit 9a97f16b07
3 changed files with 89 additions and 53 deletions
Show Stats Download Patch File Download Diff File

69
Demos/Device/Incomplete/TestAndMeasurement/TestAndMeasurement.c
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@ -329,36 +329,36 @@ void TMC_Task(void)
/* Device must be connected and configured for the task to run */
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
Endpoint_SelectEndpoint(TMC_OUT_EPNUM);
if (Endpoint_IsOUTReceived())
TMC_MessageHeader_t MessageHeader;
/* Check if a TMC packet has been received */
if (ReadTMCHeader(&MessageHeader))
{
TMC_MessageHeader_t MessageHeader;
Endpoint_Read_Stream_LE(&MessageHeader, sizeof(MessageHeader), StreamCallback_AbortOUTOnRequest);
CurrentTransferTag = MessageHeader.Tag;
/* Indicate busy */
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
switch (MessageHeader.MessageID)
{
case TMC_MESSAGEID_DEV_DEP_MSG_OUT:
Endpoint_Discard_Stream(MessageHeader.TransferSize, StreamCallback_AbortOUTOnRequest);
Endpoint_ClearOUT();
break;
case TMC_MESSAGEID_DEV_DEP_MSG_IN:
Endpoint_ClearOUT();
break;
case TMC_MESSAGEID_DEV_VENDOR_OUT:
break;
case TMC_MESSAGEID_DEV_VENDOR_IN:
MessageHeader.TransferSize = 3;
WriteTMCHeader(&MessageHeader);
Endpoint_Write_Stream_LE("TMC", 3, StreamCallback_AbortINOnRequest);
Endpoint_ClearIN();
break;
default:
Endpoint_StallTransaction();
break;
}
Endpoint_ClearOUT();
LEDs_SetAllLEDs(LEDMASK_USB_READY);
}
/* All pending data has been processed - reset the data abort flags */
@ -366,6 +366,45 @@ void TMC_Task(void)
IsTMCBulkOUTReset = false;
}
bool ReadTMCHeader(TMC_MessageHeader_t* const MessageHeader)
{
/* Select the Data Out endpoint */
Endpoint_SelectEndpoint(TMC_OUT_EPNUM);
/* 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 */
Endpoint_Read_Stream_LE(MessageHeader, sizeof(TMC_MessageHeader_t), StreamCallback_AbortOUTOnRequest);
/* Store the new command tag value for later use */
CurrentTransferTag = MessageHeader->Tag;
/* Indicate if the command has been aborted or not */
return !IsTMCBulkOUTReset;
}
bool WriteTMCHeader(TMC_MessageHeader_t* const MessageHeader)
{
/* Compute the next transfer tag value, must be between 1 and 254 */
if (++CurrentTransferTag == 0xFF)
CurrentTransferTag = 1;
/* Set the message tag of the command header */
MessageHeader->Tag = CurrentTransferTag;
MessageHeader->InverseTag = ~CurrentTransferTag;
/* Select the Data In endpoint */
Endpoint_SelectEndpoint(TMC_IN_EPNUM);
/* Send the command header to the host */
Endpoint_Write_Stream_LE(MessageHeader, sizeof(TMC_MessageHeader_t), StreamCallback_AbortINOnRequest);
/* Indicate if the command has been aborted or not */
return !IsTMCBulkINReset;
}
/** Stream callback function for the Endpoint stream write functions. This callback will abort the current stream transfer
* if a TMC Abort Bulk IN request has been issued to the control endpoint.
*/

13
Demos/Device/Incomplete/TestAndMeasurement/TestAndMeasurement.h
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@ -45,17 +45,20 @@
/* Macros: */
/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
#define LEDMASK_USB_NOTREADY LEDS_LED1
#define LEDMASK_USB_NOTREADY LEDS_LED1
/** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */
#define LEDMASK_USB_ENUMERATING (LEDS_LED2 | LEDS_LED3)
#define LEDMASK_USB_ENUMERATING (LEDS_LED2 | LEDS_LED3)
/** LED mask for the library LED driver, to indicate that the USB interface is ready. */
#define LEDMASK_USB_READY (LEDS_LED2 | LEDS_LED4)
#define LEDMASK_USB_READY (LEDS_LED2 | LEDS_LED4)
/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
#define LEDMASK_USB_ERROR (LEDS_LED1 | LEDS_LED3)
#define LEDMASK_USB_ERROR (LEDS_LED1 | LEDS_LED3)
/** LED mask for the library LED driver, to indicate that the USB interface is busy. */
#define LEDMASK_USB_BUSY LEDS_LED2
#define Req_InitiateAbortBulkOut 0x01
#define Req_CheckAbortBulkOutStatus 0x02
#define Req_InitiateAbortBulkIn 0x03
@ -139,6 +142,8 @@
/* Function Prototypes: */
void SetupHardware(void);
void TMC_Task(void);
bool ReadTMCHeader(TMC_MessageHeader_t* const MessageHeader);
bool WriteTMCHeader(TMC_MessageHeader_t* const MessageHeader);
void EVENT_USB_Device_Connect(void);
void EVENT_USB_Device_Disconnect(void);

60
Demos/Device/LowLevel/MassStorage/MassStorage.c
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@ -173,47 +173,35 @@ void MassStorage_Task(void)
/* Device must be connected and configured for the task to run */
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
/* Select the Data Out Endpoint */
Endpoint_SelectEndpoint(MASS_STORAGE_OUT_EPNUM);
/* Check to see if a command from the host has been issued */
if (Endpoint_IsReadWriteAllowed())
/* Process sent command block from the host if one has been sent */
if (ReadInCommandBlock())
{
/* Indicate busy */
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
/* Process sent command block from the host */
if (ReadInCommandBlock())
{
/* Check direction of command, select Data IN endpoint if data is from the device */
if (CommandBlock.Flags & COMMAND_DIRECTION_DATA_IN)
Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);
/* Check direction of command, select Data IN endpoint if data is from the device */
if (CommandBlock.Flags & COMMAND_DIRECTION_DATA_IN)
Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);
/* Decode the received SCSI command, set returned status code */
CommandStatus.Status = SCSI_DecodeSCSICommand() ? Command_Pass : Command_Fail;
/* Decode the received SCSI command, set returned status code */
CommandStatus.Status = SCSI_DecodeSCSICommand() ? Command_Pass : Command_Fail;
/* Load in the CBW tag into the CSW to link them together */
CommandStatus.Tag = CommandBlock.Tag;
/* Load in the CBW tag into the CSW to link them together */
CommandStatus.Tag = CommandBlock.Tag;
/* Load in the data residue counter into the CSW */
CommandStatus.DataTransferResidue = CommandBlock.DataTransferLength;
/* Stall the selected data pipe if command failed (if data is still to be transferred) */
if ((CommandStatus.Status == Command_Fail) && (CommandStatus.DataTransferResidue))
Endpoint_StallTransaction();
/* Return command status block to the host */
ReturnCommandStatus();
/* Indicate ready */
LEDs_SetAllLEDs(LEDMASK_USB_READY);
}
else
{
/* Indicate error reading in the command block from the host */
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}
/* Load in the data residue counter into the CSW */
CommandStatus.DataTransferResidue = CommandBlock.DataTransferLength;
/* Stall the selected data pipe if command failed (if data is still to be transferred) */
if ((CommandStatus.Status == Command_Fail) && (CommandStatus.DataTransferResidue))
Endpoint_StallTransaction();
/* Return command status block to the host */
ReturnCommandStatus();
/* Indicate ready */
LEDs_SetAllLEDs(LEDMASK_USB_READY);
}
/* Check if a Mass Storage Reset occurred */
@ -244,6 +232,10 @@ static bool ReadInCommandBlock(void)
{
/* Select the Data Out endpoint */
Endpoint_SelectEndpoint(MASS_STORAGE_OUT_EPNUM);
/* Abort if no command has been sent from the host */
if (!(Endpoint_IsOUTReceived()))
return false;
/* Read in command block header */
Endpoint_Read_Stream_LE(&CommandBlock, (sizeof(CommandBlock) - sizeof(CommandBlock.SCSICommandData)),

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