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[pub/USBasp.git] / Demos / Device / LowLevel / MassStorage / MassStorage.c

diff --git a/Demos/Device/LowLevel/MassStorage/MassStorage.c b/Demos/Device/LowLevel/MassStorage/MassStorage.c
index 1a2d8d4..cb43b19 100644 (file)
--- a/Demos/Device/LowLevel/MassStorage/MassStorage.c
+++ b/Demos/Device/LowLevel/MassStorage/MassStorage.c
@@ -1,21 +1,21 @@
 /*\r
              LUFA Library\r
 /*\r
              LUFA Library\r

-     Copyright (C) Dean Camera, 2009.\r
+     Copyright (C) Dean Camera, 2010.\r

               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r

-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
-  Permission to use, copy, modify, and distribute this software\r
-  and its documentation for any purpose and without fee is hereby\r
-  granted, provided that the above copyright notice appear in all\r
-  copies and that both that the copyright notice and this\r
-  permission notice and warranty disclaimer appear in supporting\r
-  documentation, and that the name of the author not be used in\r
-  advertising or publicity pertaining to distribution of the\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+  Permission to use, copy, modify, distribute, and sell this \r
+  software and its documentation for any purpose is hereby granted\r
+  without fee, provided that the above copyright notice appear in \r
+  all copies and that both that the copyright notice and this\r
+  permission notice and warranty disclaimer appear in supporting \r
+  documentation, and that the name of the author not be used in \r
+  advertising or publicity pertaining to distribution of the \r

   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r


@@ -37,7 +37,6 @@
 #define  INCLUDE_FROM_MASSSTORAGE_C\r
 #include "MassStorage.h"\r
 \r
 #define  INCLUDE_FROM_MASSSTORAGE_C\r
 #include "MassStorage.h"\r
 \r

-/* Global Variables */\r

 /** Structure to hold the latest Command Block Wrapper issued by the host, containing a SCSI command to execute. */\r
 CommandBlockWrapper_t  CommandBlock;\r
 \r
 /** Structure to hold the latest Command Block Wrapper issued by the host, containing a SCSI command to execute. */\r
 CommandBlockWrapper_t  CommandBlock;\r
 \r


@@ -47,8 +46,9 @@ CommandStatusWrapper_t CommandStatus = { .Signature = CSW_SIGNATURE };
 /** Flag to asynchronously abort any in-progress data transfers upon the reception of a mass storage reset command. */\r
 volatile bool          IsMassStoreReset = false;\r
 \r
 /** Flag to asynchronously abort any in-progress data transfers upon the reception of a mass storage reset command. */\r
 volatile bool          IsMassStoreReset = false;\r
 \r

+\r

 /** Main program entry point. This routine configures the hardware required by the application, then\r
 /** Main program entry point. This routine configures the hardware required by the application, then\r

- *  starts the scheduler to run the application tasks.\r
+ *  enters a loop to run the application tasks in sequence.\r

  */\r
 int main(void)\r
 {\r
  */\r
 int main(void)\r
 {\r


@@ -75,7 +75,8 @@ void SetupHardware(void)
 \r
        /* Hardware Initialization */\r
        LEDs_Init();\r
 \r
        /* Hardware Initialization */\r
        LEDs_Init();\r

-       Dataflash_Init(SPI_SPEED_FCPU_DIV_2);\r
+       SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_SCK_LEAD_FALLING | SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);\r
+       Dataflash_Init();\r

        USB_Init();\r
 \r
        /* Clear Dataflash sector protections, if enabled */\r
        USB_Init();\r
 \r
        /* Clear Dataflash sector protections, if enabled */\r


@@ -140,7 +141,7 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
                                Endpoint_ClearSETUP();\r
 \r
                                /* Indicate that the current transfer should be aborted */\r
                                Endpoint_ClearSETUP();\r
 \r
                                /* Indicate that the current transfer should be aborted */\r

-                               IsMassStoreReset = true;                        \r
+                               IsMassStoreReset = true;\r

 \r
                                Endpoint_ClearStatusStage();\r
                        }\r
 \r
                                Endpoint_ClearStatusStage();\r
                        }\r


@@ -188,34 +189,21 @@ void MassStorage_Task(void)
                        if (CommandBlock.Flags & COMMAND_DIRECTION_DATA_IN)\r
                          Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);\r
 \r
                        if (CommandBlock.Flags & COMMAND_DIRECTION_DATA_IN)\r
                          Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);\r
 \r

-                       /* Decode the received SCSI command */\r
-                       SCSI_DecodeSCSICommand();\r
+                       /* Decode the received SCSI command, set returned status code */\r
+                       CommandStatus.Status = SCSI_DecodeSCSICommand() ? Command_Pass : Command_Fail;          \r

 \r
                        /* Load in the CBW tag into the CSW to link them together */\r
                        CommandStatus.Tag = CommandBlock.Tag;\r
 \r
                        /* Load in the data residue counter into the CSW */\r
                        CommandStatus.DataTransferResidue = CommandBlock.DataTransferLength;\r
 \r
                        /* Load in the CBW tag into the CSW to link them together */\r
                        CommandStatus.Tag = CommandBlock.Tag;\r
 \r
                        /* Load in the data residue counter into the CSW */\r
                        CommandStatus.DataTransferResidue = CommandBlock.DataTransferLength;\r

-\r
+                       \r

                        /* Stall the selected data pipe if command failed (if data is still to be transferred) */\r
                        if ((CommandStatus.Status == Command_Fail) && (CommandStatus.DataTransferResidue))\r
                          Endpoint_StallTransaction();\r
 \r
                        /* Return command status block to the host */\r
                        ReturnCommandStatus();\r
                        /* Stall the selected data pipe if command failed (if data is still to be transferred) */\r
                        if ((CommandStatus.Status == Command_Fail) && (CommandStatus.DataTransferResidue))\r
                          Endpoint_StallTransaction();\r
 \r
                        /* Return command status block to the host */\r
                        ReturnCommandStatus();\r

-                       \r
-                       /* Check if a Mass Storage Reset occurred */\r
-                       if (IsMassStoreReset)\r
-                       {\r
-                               /* Reset the data endpoint banks */\r
-                               Endpoint_ResetFIFO(MASS_STORAGE_OUT_EPNUM);\r
-                               Endpoint_ResetFIFO(MASS_STORAGE_IN_EPNUM);\r
-                               \r
-                               Endpoint_SelectEndpoint(MASS_STORAGE_OUT_EPNUM);\r
-                               Endpoint_ClearStall();\r
-                               Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);\r
-                               Endpoint_ClearStall();\r
-                       }\r

 \r
                        /* Indicate ready */\r
                        LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
 \r
                        /* Indicate ready */\r
                        LEDs_SetAllLEDs(LEDMASK_USB_READY);\r


@@ -227,8 +215,23 @@ void MassStorage_Task(void)
                }\r
        }\r
 \r
                }\r
        }\r
 \r

-       /* Clear the abort transfer flag */\r
-       IsMassStoreReset = false;\r
+       /* Check if a Mass Storage Reset occurred */\r
+       if (IsMassStoreReset)\r
+       {\r
+               /* Reset the data endpoint banks */\r
+               Endpoint_ResetFIFO(MASS_STORAGE_OUT_EPNUM);\r
+               Endpoint_ResetFIFO(MASS_STORAGE_IN_EPNUM);\r
+               \r
+               Endpoint_SelectEndpoint(MASS_STORAGE_OUT_EPNUM);\r
+               Endpoint_ClearStall();\r
+               Endpoint_ResetDataToggle();\r
+               Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);\r
+               Endpoint_ClearStall();\r
+               Endpoint_ResetDataToggle();\r
+\r
+               /* Clear the abort transfer flag */\r
+               IsMassStoreReset = false;\r
+       }\r

 }\r
 \r
 /** Function to read in a command block from the host, via the bulk data OUT endpoint. This function reads in the next command block\r
 }\r
 \r
 /** Function to read in a command block from the host, via the bulk data OUT endpoint. This function reads in the next command block\r