From 96ea1a35a359de4763e0fce54f5ed2fb286e88f2 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Tue, 2 Oct 2012 20:39:13 -0700
Subject: [PATCH] #defines for making USB structure definitions a bit simpler.

---
 include/libopencm3/lpc43xx/usb.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/libopencm3/lpc43xx/usb.h b/include/libopencm3/lpc43xx/usb.h
index 69a45fd5..8c6e675c 100644
--- a/include/libopencm3/lpc43xx/usb.h
+++ b/include/libopencm3/lpc43xx/usb.h
@@ -23,6 +23,8 @@
 #include <libopencm3/cm3/common.h>
 #include <libopencm3/lpc43xx/memorymap.h>
 
+#define BIT_MASK(base_name) (((1 << base_name##_WIDTH) - 1) << base_name##_SHIFT)
+#define BIT_ARG(base_name, x) ((x) << base_name##_SHIFT)
 /* --- USB0 registers ------------------------------------------------------ */
 
 /* Device/host capability registers */