diff options
author | Dean Camera <dean@fourwalledcubicle.com> | 2009-10-02 07:40:24 +0000 |
---|---|---|
committer | Dean Camera <dean@fourwalledcubicle.com> | 2009-10-02 07:40:24 +0000 |
commit | b7eead83aab675ebfe583c5beb1662e2d1833cb8 (patch) | |
tree | 3e0202b4a972dabfe0bc45afa49b475ee191138c /Demos/Device | |
parent | 3ecc4629540c72f1db293c5725faf3106935731d (diff) | |
download | lufa-b7eead83aab675ebfe583c5beb1662e2d1833cb8.tar.gz lufa-b7eead83aab675ebfe583c5beb1662e2d1833cb8.tar.bz2 lufa-b7eead83aab675ebfe583c5beb1662e2d1833cb8.zip |
Cleanups to the Device mode Mass Storage demo applications' SCSI routines.
Diffstat (limited to 'Demos/Device')
-rw-r--r-- | Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c | 70 | ||||
-rw-r--r-- | Demos/Device/ClassDriver/MassStorage/Lib/SCSI.h | 10 | ||||
-rw-r--r-- | Demos/Device/LowLevel/MassStorage/Lib/SCSI.c | 78 | ||||
-rw-r--r-- | Demos/Device/LowLevel/MassStorage/Lib/SCSI.h | 12 | ||||
-rw-r--r-- | Demos/Device/LowLevel/MassStorage/MassStorage.c | 6 |
5 files changed, 61 insertions, 115 deletions
diff --git a/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c b/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c index 771773bb7..468a04ab7 100644 --- a/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c +++ b/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c @@ -88,34 +88,36 @@ SCSI_Request_Sense_Response_t SenseData = */
bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{
- bool CommandSuccess = false;
-
+ /* Set initial sense data, before the requested command is processed */
+ SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,
+ SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
+ SCSI_ASENSEQ_NO_QUALIFIER);
+
/* Run the appropriate SCSI command hander function based on the passed command */
switch (MSInterfaceInfo->State.CommandBlock.SCSICommandData[0])
{
case SCSI_CMD_INQUIRY:
- CommandSuccess = SCSI_Command_Inquiry(MSInterfaceInfo);
+ SCSI_Command_Inquiry(MSInterfaceInfo);
break;
case SCSI_CMD_REQUEST_SENSE:
- CommandSuccess = SCSI_Command_Request_Sense(MSInterfaceInfo);
+ SCSI_Command_Request_Sense(MSInterfaceInfo);
break;
case SCSI_CMD_READ_CAPACITY_10:
- CommandSuccess = SCSI_Command_Read_Capacity_10(MSInterfaceInfo);
+ SCSI_Command_Read_Capacity_10(MSInterfaceInfo);
break;
case SCSI_CMD_SEND_DIAGNOSTIC:
- CommandSuccess = SCSI_Command_Send_Diagnostic(MSInterfaceInfo);
+ SCSI_Command_Send_Diagnostic(MSInterfaceInfo);
break;
case SCSI_CMD_WRITE_10:
- CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_WRITE);
+ SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_WRITE);
break;
case SCSI_CMD_READ_10:
- CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_READ);
+ SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_READ);
break;
case SCSI_CMD_TEST_UNIT_READY:
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
case SCSI_CMD_VERIFY_10:
/* These commands should just succeed, no handling required */
- CommandSuccess = true;
MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0;
break;
default:
@@ -126,27 +128,15 @@ bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo) break;
}
- /* Check if command was successfully processed */
- if (CommandSuccess)
- {
- SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,
- SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
- SCSI_ASENSEQ_NO_QUALIFIER);
-
- return true;
- }
-
- return false;
+ return (SenseData.SenseKey == SCSI_SENSE_KEY_GOOD);
}
/** Command processing for an issued SCSI INQUIRY command. This command returns information about the device's features
* and capabilities to the host.
*
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
+static void SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{
uint16_t AllocationLength = (((uint16_t)MSInterfaceInfo->State.CommandBlock.SCSICommandData[3] << 8) |
MSInterfaceInfo->State.CommandBlock.SCSICommandData[4]);
@@ -162,7 +152,7 @@ static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo) SCSI_ASENSE_INVALID_FIELD_IN_CDB,
SCSI_ASENSEQ_NO_QUALIFIER);
- return false;
+ return;
}
Endpoint_Write_Stream_LE(&InquiryData, BytesTransferred, NO_STREAM_CALLBACK);
@@ -177,18 +167,14 @@ static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo) /* Succeed the command and update the bytes transferred counter */
MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred;
-
- return true;
}
/** Command processing for an issued SCSI REQUEST SENSE command. This command returns information about the last issued command,
* including the error code and additional error information so that the host can determine why a command failed to complete.
*
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
+static void SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{
uint8_t AllocationLength = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4];
uint8_t BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData);
@@ -201,18 +187,14 @@ static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInf /* Succeed the command and update the bytes transferred counter */
MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred;
-
- return true;
}
/** Command processing for an issued SCSI READ CAPACITY (10) command. This command returns information about the device's capacity
* on the selected Logical Unit (drive), as a number of OS-sized blocks.
*
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
+static void SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{
uint32_t LastBlockAddressInLUN = (LUN_MEDIA_BLOCKS - 1);
uint32_t MediaBlockSize = VIRTUAL_MEMORY_BLOCK_SIZE;
@@ -223,8 +205,6 @@ static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterface /* Succeed the command and update the bytes transferred counter */
MSInterfaceInfo->State.CommandBlock.DataTransferLength -= 8;
-
- return true;
}
/** Command processing for an issued SCSI SEND DIAGNOSTIC command. This command performs a quick check of the Dataflash ICs on the
@@ -232,10 +212,8 @@ static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterface * supported.
*
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
+static void SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{
/* Check to see if the SELF TEST bit is not set */
if (!(MSInterfaceInfo->State.CommandBlock.SCSICommandData[1] & (1 << 2)))
@@ -245,7 +223,7 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI SCSI_ASENSE_INVALID_FIELD_IN_CDB,
SCSI_ASENSEQ_NO_QUALIFIER);
- return false;
+ return;
}
/* Check to see if all attached Dataflash ICs are functional */
@@ -256,13 +234,13 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
SCSI_ASENSEQ_NO_QUALIFIER);
- return false;
+ return;
}
/* Succeed the command and update the bytes transferred counter */
MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0;
- return true;
+ return;
}
/** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address
@@ -271,10 +249,8 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI *
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
* \param[in] IsDataRead Indicates if the command is a READ (10) command or WRITE (10) command (DATA_READ or DATA_WRITE)
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead)
+static void SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead)
{
uint32_t BlockAddress;
uint16_t TotalBlocks;
@@ -297,7 +273,7 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE,
SCSI_ASENSEQ_NO_QUALIFIER);
- return false;
+ return;
}
#if (TOTAL_LUNS > 1)
@@ -314,5 +290,5 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo /* Update the bytes transferred counter and succeed the command */
MSInterfaceInfo->State.CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE);
- return true;
+ return;
}
diff --git a/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.h b/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.h index 7779cd3d7..e531db155 100644 --- a/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.h +++ b/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.h @@ -137,11 +137,11 @@ bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
#if defined(INCLUDE_FROM_SCSI_C)
- static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
- static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
- static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
- static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
- static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead);
+ static void SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
+ static void SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
+ static void SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
+ static void SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
+ static void SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead);
#endif
#endif
diff --git a/Demos/Device/LowLevel/MassStorage/Lib/SCSI.c b/Demos/Device/LowLevel/MassStorage/Lib/SCSI.c index d0840d36e..274dbc9cf 100644 --- a/Demos/Device/LowLevel/MassStorage/Lib/SCSI.c +++ b/Demos/Device/LowLevel/MassStorage/Lib/SCSI.c @@ -83,37 +83,41 @@ SCSI_Request_Sense_Response_t SenseData = /** Main routine to process the SCSI command located in the Command Block Wrapper read from the host. This dispatches
* to the appropriate SCSI command handling routine if the issued command is supported by the device, else it returns
* a command failure due to a ILLEGAL REQUEST.
+ *
+ * \return Boolean true if the command completed sucessfully, false otherwise
*/
-void SCSI_DecodeSCSICommand(void)
+bool SCSI_DecodeSCSICommand(void)
{
- bool CommandSuccess = false;
+ /* Set initial sense data, before the requested command is processed */
+ SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,
+ SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
+ SCSI_ASENSEQ_NO_QUALIFIER);
/* Run the appropriate SCSI command hander function based on the passed command */
switch (CommandBlock.SCSICommandData[0])
{
case SCSI_CMD_INQUIRY:
- CommandSuccess = SCSI_Command_Inquiry();
+ SCSI_Command_Inquiry();
break;
case SCSI_CMD_REQUEST_SENSE:
- CommandSuccess = SCSI_Command_Request_Sense();
+ SCSI_Command_Request_Sense();
break;
case SCSI_CMD_READ_CAPACITY_10:
- CommandSuccess = SCSI_Command_Read_Capacity_10();
+ SCSI_Command_Read_Capacity_10();
break;
case SCSI_CMD_SEND_DIAGNOSTIC:
- CommandSuccess = SCSI_Command_Send_Diagnostic();
+ SCSI_Command_Send_Diagnostic();
break;
case SCSI_CMD_WRITE_10:
- CommandSuccess = SCSI_Command_ReadWrite_10(DATA_WRITE);
+ SCSI_Command_ReadWrite_10(DATA_WRITE);
break;
case SCSI_CMD_READ_10:
- CommandSuccess = SCSI_Command_ReadWrite_10(DATA_READ);
+ SCSI_Command_ReadWrite_10(DATA_READ);
break;
case SCSI_CMD_TEST_UNIT_READY:
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
case SCSI_CMD_VERIFY_10:
/* These commands should just succeed, no handling required */
- CommandSuccess = true;
CommandBlock.DataTransferLength = 0;
break;
default:
@@ -124,29 +128,13 @@ void SCSI_DecodeSCSICommand(void) break;
}
- /* Check if command was successfully processed */
- if (CommandSuccess)
- {
- /* Command succeeded - set the CSW status and update the SENSE key */
- CommandStatus.Status = Command_Pass;
-
- SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,
- SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
- SCSI_ASENSEQ_NO_QUALIFIER);
- }
- else
- {
- /* Command failed - set the CSW status - failed command function updates the SENSE key */
- CommandStatus.Status = Command_Fail;
- }
+ return (SenseData.SenseKey == SCSI_SENSE_KEY_GOOD);
}
/** Command processing for an issued SCSI INQUIRY command. This command returns information about the device's features
* and capabilities to the host.
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_Inquiry(void)
+static void SCSI_Command_Inquiry(void)
{
uint16_t AllocationLength = (((uint16_t)CommandBlock.SCSICommandData[3] << 8) |
CommandBlock.SCSICommandData[4]);
@@ -162,7 +150,7 @@ static bool SCSI_Command_Inquiry(void) SCSI_ASENSE_INVALID_FIELD_IN_CDB,
SCSI_ASENSEQ_NO_QUALIFIER);
- return false;
+ return;
}
/* Write the INQUIRY data to the endpoint */
@@ -178,16 +166,12 @@ static bool SCSI_Command_Inquiry(void) /* Succeed the command and update the bytes transferred counter */
CommandBlock.DataTransferLength -= BytesTransferred;
-
- return true;
}
/** Command processing for an issued SCSI REQUEST SENSE command. This command returns information about the last issued command,
* including the error code and additional error information so that the host can determine why a command failed to complete.
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_Request_Sense(void)
+static void SCSI_Command_Request_Sense(void)
{
uint8_t AllocationLength = CommandBlock.SCSICommandData[4];
uint8_t BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData);
@@ -205,16 +189,12 @@ static bool SCSI_Command_Request_Sense(void) /* Succeed the command and update the bytes transferred counter */
CommandBlock.DataTransferLength -= BytesTransferred;
-
- return true;
}
/** Command processing for an issued SCSI READ CAPACITY (10) command. This command returns information about the device's capacity
* on the selected Logical Unit (drive), as a number of OS-sized blocks.
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_Read_Capacity_10(void)
+static void SCSI_Command_Read_Capacity_10(void)
{
/* Send the total number of logical blocks in the current LUN */
Endpoint_Write_DWord_BE(LUN_MEDIA_BLOCKS - 1);
@@ -224,15 +204,13 @@ static bool SCSI_Command_Read_Capacity_10(void) /* Check if the current command is being aborted by the host */
if (IsMassStoreReset)
- return false;
+ return;
/* Send the endpoint data packet to the host */
Endpoint_ClearIN();
/* Succeed the command and update the bytes transferred counter */
CommandBlock.DataTransferLength -= 8;
-
- return true;
}
/** Command processing for an issued SCSI SEND DIAGNOSTIC command. This command performs a quick check of the Dataflash ICs on the
@@ -240,10 +218,8 @@ static bool SCSI_Command_Read_Capacity_10(void) * supported.
*
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_Send_Diagnostic(void)
+static void SCSI_Command_Send_Diagnostic(void)
{
/* Check to see if the SELF TEST bit is not set */
if (!(CommandBlock.SCSICommandData[1] & (1 << 2)))
@@ -253,7 +229,7 @@ static bool SCSI_Command_Send_Diagnostic(void) SCSI_ASENSE_INVALID_FIELD_IN_CDB,
SCSI_ASENSEQ_NO_QUALIFIER);
- return false;
+ return;
}
/* Check to see if all attached Dataflash ICs are functional */
@@ -264,13 +240,11 @@ static bool SCSI_Command_Send_Diagnostic(void) SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
SCSI_ASENSEQ_NO_QUALIFIER);
- return false;
+ return;
}
/* Succeed the command and update the bytes transferred counter */
CommandBlock.DataTransferLength = 0;
-
- return true;
}
/** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address
@@ -278,10 +252,8 @@ static bool SCSI_Command_Send_Diagnostic(void) * reading and writing of the data.
*
* \param[in] IsDataRead Indicates if the command is a READ (10) command or WRITE (10) command (DATA_READ or DATA_WRITE)
- *
- * \return Boolean true if the command completed successfully, false otherwise.
*/
-static bool SCSI_Command_ReadWrite_10(const bool IsDataRead)
+static void SCSI_Command_ReadWrite_10(const bool IsDataRead)
{
uint32_t BlockAddress;
uint16_t TotalBlocks;
@@ -304,7 +276,7 @@ static bool SCSI_Command_ReadWrite_10(const bool IsDataRead) SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE,
SCSI_ASENSEQ_NO_QUALIFIER);
- return false;
+ return;
}
#if (TOTAL_LUNS > 1)
@@ -320,6 +292,4 @@ static bool SCSI_Command_ReadWrite_10(const bool IsDataRead) /* Update the bytes transferred counter and succeed the command */
CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE);
-
- return true;
}
diff --git a/Demos/Device/LowLevel/MassStorage/Lib/SCSI.h b/Demos/Device/LowLevel/MassStorage/Lib/SCSI.h index 076328631..f642debba 100644 --- a/Demos/Device/LowLevel/MassStorage/Lib/SCSI.h +++ b/Demos/Device/LowLevel/MassStorage/Lib/SCSI.h @@ -136,14 +136,14 @@ } SCSI_Request_Sense_Response_t;
/* Function Prototypes: */
- void SCSI_DecodeSCSICommand(void);
+ bool SCSI_DecodeSCSICommand(void);
#if defined(INCLUDE_FROM_SCSI_C)
- static bool SCSI_Command_Inquiry(void);
- static bool SCSI_Command_Request_Sense(void);
- static bool SCSI_Command_Read_Capacity_10(void);
- static bool SCSI_Command_Send_Diagnostic(void);
- static bool SCSI_Command_ReadWrite_10(const bool IsDataRead);
+ static void SCSI_Command_Inquiry(void);
+ static void SCSI_Command_Request_Sense(void);
+ static void SCSI_Command_Read_Capacity_10(void);
+ static void SCSI_Command_Send_Diagnostic(void);
+ static void SCSI_Command_ReadWrite_10(const bool IsDataRead);
#endif
#endif
diff --git a/Demos/Device/LowLevel/MassStorage/MassStorage.c b/Demos/Device/LowLevel/MassStorage/MassStorage.c index cf276fd81..76aa337c7 100644 --- a/Demos/Device/LowLevel/MassStorage/MassStorage.c +++ b/Demos/Device/LowLevel/MassStorage/MassStorage.c @@ -189,15 +189,15 @@ void MassStorage_Task(void) if (CommandBlock.Flags & COMMAND_DIRECTION_DATA_IN)
Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);
- /* Decode the received SCSI command */
- SCSI_DecodeSCSICommand();
+ /* 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 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();
|