qmk_firmware/tmk_core/protocol/usb_util.c

36 lines
1.0 KiB
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 "usb_util.h"
#include "gpio.h"
#include "wait.h"
__attribute__((weak)) void usb_disconnect(void) {}
__attribute__((weak)) bool usb_connected_state(void) {
return true;
}
__attribute__((weak)) bool usb_vbus_state(void) {
#ifdef USB_VBUS_PIN
setPinInput(USB_VBUS_PIN);
wait_us(5);
return readPin(USB_VBUS_PIN);
#else
return true;
#endif
}