Add README

[rgblamp.git] / isr.h

diff --git a/isr.h b/isr.h
index 7b1ede094537344a26c3e2e8e73b4a03919c8d49..766773954f56f299bf7d4c4bae1ccbb531d047d6 100644 (file)
--- a/isr.h
+++ b/isr.h
@@ -1,3 +1,32 @@
+/*
+ * Copyright © 2011, 2012, Titanium Mirror, Inc..
+ * All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - Neither the name of Titanium Mirror, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
 /*
  * File:   isr.h
  *
@@ -9,27 +38,14 @@
 
 #include <htc.h>
 
-extern bit isr_gie;
-extern unsigned char isr_di;
-
-/* Nested disable interrupts inline function, for use outside ISR */
-#define ndi() \
-  do { \
-    if (isr_di++ == 0) \
-      isr_gie = GIE; \
-      if (isr_gie) \
-        di(); \
-  } while (0)
-
-/* Nested enable interrupts inline function, for use outside ISR */
-#define nei() \
-  do { \
-    if (--isr_di == 0) \
-      if (isr_gie) { \
-       isr_gie = 0; \
-        ei(); \
-      } \
-  } while (0)
+extern bit _isr_gie;
+extern unsigned char _isr_di;
+
+/* Nested disable interrupts inline function.  Should be OK even in ISR. */
+void ndi();
+
+/* Nested enable interrupts inline function.  Should be OK even in ISR. */
+void nei();
 
 void interrupt isr();