Add support for COM port discovery via USB VID/PID Add support for Leonardo USB bootloader auto-reset

msvc/usb_com_helper.h

@@ -0,0 +1,35 @@
+/*
+ * avrdude - A Downloader/Uploader for AVR device programmers
+ * Copyright (C) 2019 Marius Greuel
+ *
+ * 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 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 USB_COM_HELPER_H
+#define USB_COM_HELPER_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int win32_find_usb_com_port(const char* deviceId, char** port, bool wait_for_device, bool find_related_devices, bool auto_reset);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // USB_COM_HELPER_H