1 files changed, 37 insertions, 0 deletions

diff --git a/firmware/include/format.h b/firmware/include/format.h
new file mode 100644
index 0000000000..6a00574644
--- /dev/null
+++ b/firmware/include/format.h
@@ -0,0 +1,37 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Felix Arends
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __FORMAT_H__
+#define __FORMAT_H__
+
+int format(
+    /* call 'push()' for each output letter */
+    int (*push)(void *userp, unsigned char data),
+    void *userp,
+    const char *fmt,
+    va_list ap);
+
+/* callback function is called for every output character (byte) with userp and
+ * should return 0 when ch is a char other than '\0' that should stop printing */
+int vuprintf(int (*push)(void *userp, unsigned char data),
+              void *userp, const char *fmt, va_list ap);
+
+#endif /* __FORMAT_H__ */