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+/*
+ * This file is part of the Black Magic Debug project.
+ *
+ * Copyright (C) 2015 Black Sphere Technologies Ltd.
+ * Written by Gareth McMullin <gareth@blacksphere.co.nz>
+ *
+ * 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/>.
+ */
+
+/* This file implements a the USB Communications Device Class - Abstract
+ * Control Model (CDC-ACM) as defined in CDC PSTN subclass 1.2.
+ * A Device Firmware Upgrade (DFU 1.1) class interface is provided for
+ * field firmware upgrade.
+ *
+ * The device's unique id is used as the USB serial number string.
+ */
+#ifndef __CDCACM_H
+#define __CDCACM_H
+
+#include <libopencm3/usb/usbd.h>
+
+#define CDCACM_PACKET_SIZE 64
+
+#define CDCACM_GDB_ENDPOINT 1
+#define CDCACM_UART_ENDPOINT 3
+
+extern usbd_device *usbdev;
+
+void cdcacm_init(void);
+/* Returns current usb configuration, or 0 if not configured. */
+int cdcacm_get_config(void);
+int cdcacm_get_dtr(void);
+
+#endif