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+/* Megumin LED display firmware
+ * Copyright (C) 2018 Sebastian Götte <code@jaseg.net>
+ *
+ * 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __DISPLAY_H__
+#define __DISPLAY_H__
+
+#include "global.h"
+#include "transpose.h"
+
+extern volatile struct framebuf *read_fb, *write_fb;
+
+enum FB_OPERATION { FB_WRITE, FB_FORMAT, FB_UPDATE };
+extern volatile enum FB_OPERATION fb_op;
+
+extern volatile int nbits;
+extern volatile int frame_duration_us;
+
+void display_init(void);
+
+#endif/*__DISPLAY_H__*/