qmk_firmware/tmk_core/protocol/lufa/usb_util.c

/* Copyright 2021 QMK
 *
 * 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 <LUFA/Drivers/USB/USB.h>
#include "usb_util.h"
#include "wait.h"

void usb_disconnect(void) {
    USB_Disable();
    USB_DeviceState = DEVICE_STATE_Unattached;
}

bool usb_connected_state(void) { return USB_Device_IsAddressSet(); }

#if defined(OTGPADE)
bool usb_vbus_state(void) {
    USB_OTGPAD_On();  // enables VBUS pad
    wait_us(5);

    return USB_VBUS_GetStatus();  // checks state of VBUS
}
#endif