/*
 * This file is part of the Black Magic Debug project.
 *
 * Copyright (C) 2022 1BitSquared <info@1bitsquared.com>
 * Written by Rachel Mant <git@dragonmux.network>
 *
 * 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/>.
 */

#include <libopencm3/cm3/nvic.h>

#include "general.h"
#include "usb.h"
#include "usb_descriptors.h"
#include "cdcacm.h"
#include "serialno.h"

char serial_no[DFU_SERIAL_LENGTH];
usbd_device *usbdev = NULL;

/* We need a special large control buffer for this device: */
static uint8_t usbd_control_buffer[256];

void blackmagic_usb_init(void)
{
	serial_no_read(serial_no);

	usbdev = usbd_init(&USB_DRIVER, &dev_desc, &config, usb_strings, sizeof(usb_strings) / sizeof(char *),
		usbd_control_buffer, sizeof(usbd_control_buffer));

	usbd_register_set_config_callback(usbdev, cdcacm_set_config);

	nvic_set_priority(USB_IRQ, IRQ_PRI_USB);
	nvic_enable_irq(USB_IRQ);
}

void USB_ISR(void)
{
	usbd_poll(usbdev);
}