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-rw-r--r--os/various/usb_msc.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/os/various/usb_msc.h b/os/various/usb_msc.h
index f7ab77c9c..952903933 100644
--- a/os/various/usb_msc.h
+++ b/os/various/usb_msc.h
@@ -38,6 +38,10 @@
#define MSC_GET_MAX_LUN_COMMAND 0xFE
#define MSC_MASS_STORAGE_RESET_COMMAND 0xFF
+#define MSC_CSW_STATUS_PASSED 0
+#define MSC_CSW_STATUS_FAILED 1
+#define MSC_CSW_STATUS_PHASE_ERROR 2
+
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/