lib/fdelay-lib.h: added FDELAY_OUTPUT macro

42ad317a · Tomasz Wlostowski · Alessandro Rubini · 23868de7 · 42ad317a
Commit 42ad317a authored Mar 18, 2014 by Tomasz Wlostowski Committed by Alessandro Rubini Mar 19, 2014
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fdelay-lib.h lib/fdelay-lib.h +6 -0

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--- a/lib/fdelay-lib.h
+++ b/lib/fdelay-lib.h
@@ -22,6 +22,12 @@ extern "C" {
 #include <stdint.h>
 #include "fine-delay.h"

+/* Convenience macro for converting the physical output connector
+   numbers (as seen on the mezzanine's front panel) to convention used
+   by the drive (0..3). We keep 0..3 indexing to maintain library
+   compatibility. */
+#define FDELAY_OUTPUT(out) ((out) + 1)
+
 /* Opaque data type used as token */
 struct fdelay_board;