msc add support

- SCSI_CMD_MODE_SELECT_6
- SCSI_CMD_MODE_SENSE_6
- SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL

fix msc device bug with no data unsupported command
complete msc device demo with ram disk of 8KB

1 files changed, 10 insertions, 7 deletions

diff --git a/tinyusb/class/msc_device.c b/tinyusb/class/msc_device.c
index d1c225242..6e537810e 100644
--- a/tinyusb/class/msc_device.c
+++ b/tinyusb/class/msc_device.c
@@ -151,14 +151,17 @@ void mscd_isr(endpoint_handle_t edpt_hdl, tusb_event_t event, uint32_t xferred_b
   ASSERT( p_msc->cbw.xfer_bytes >= actual_length, VOID_RETURN );

 

   //------------- Data Phase -------------//

-  if ( BIT_TEST_(p_msc->cbw.dir, 7) && p_buffer == NULL )

-  { // application does not provide data to response --> possibly unsupported SCSI command

-    ASSERT( TUSB_ERROR_NONE == dcd_pipe_stall(p_msc->edpt_in), VOID_RETURN );

-    p_msc->csw.status = MSC_CSW_STATUS_FAILED;

-  }else

+  if ( p_msc->cbw.xfer_bytes )

   {

-    ASSERT( dcd_pipe_queue_xfer( BIT_TEST_(p_msc->cbw.dir, 7) ? p_msc->edpt_in : p_msc->edpt_out,

-                                 p_buffer, actual_length) == TUSB_ERROR_NONE, VOID_RETURN);

+    if ( p_buffer == NULL || actual_length == 0 )

+    { // application does not provide data to response --> possibly unsupported SCSI command

+      ASSERT( TUSB_ERROR_NONE == dcd_pipe_stall(p_msc->edpt_in), VOID_RETURN );

+      p_msc->csw.status = MSC_CSW_STATUS_FAILED;

+    }else

+    {

+      ASSERT( dcd_pipe_queue_xfer( BIT_TEST_(p_msc->cbw.dir, 7) ? p_msc->edpt_in : p_msc->edpt_out,

+                                                                p_buffer, actual_length) == TUSB_ERROR_NONE, VOID_RETURN);

+    }

   }

 

   //------------- Status Phase -------------//