midi

protocol/lufa/midi/bytequeue/interrupt_setting.c

@@ -0,0 +1,36 @@
+//Copyright 20010 Alex Norman
+//writen by Alex Norman 
+//
+//This file is part of avr-bytequeue.
+//
+//avr-bytequeue 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 3 of the License, or
+//(at your option) any later version.
+//
+//avr-bytequeue is distributed in the hope that it will be useful,
+//but WITHOUT ANY WARRANTY; without even the implied warranty of
+//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//GNU General Public License for more details.
+//
+//You should have received a copy of the GNU General Public License
+//along with avr-bytequeue.  If not, see <http://www.gnu.org/licenses/>.
+
+
+//AVR specific code
+//should be able to port to other systems by simply providing chip specific
+//implementations of the typedef and these functions
+
+#include "interrupt_setting.h"
+#include <avr/interrupt.h>
+
+interrupt_setting_t store_and_clear_interrupt(void) {
+   uint8_t sreg = SREG;
+   cli();
+   return sreg;
+}
+
+void restore_interrupt_setting(interrupt_setting_t setting) {
+   SREG = setting;
+}
+