qmk_firmware

QMK firmware for my keyboards (Corne, Sweep Ferris) and trackball (Ploopy Adept)
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usb_util.c (1058B)

      1 /* Copyright 2021 QMK
      2  *
      3  * This program is free software: you can redistribute it and/or modify
      4  * it under the terms of the GNU General Public License as published by
      5  * the Free Software Foundation, either version 3 of the License, or
      6  * (at your option) any later version.
      7  *
      8  * This program is distributed in the hope that it will be useful,
      9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     11  * GNU General Public License for more details.
     12  *
     13  * You should have received a copy of the GNU General Public License
     14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
     15  */
     16 
     17 #include "usb_util.h"
     18 #include "gpio.h"
     19 #include "wait.h"
     20 
     21 __attribute__((weak)) void usb_disconnect(void) {}
     22 
     23 __attribute__((weak)) bool usb_connected_state(void) {
     24     return true;
     25 }
     26 
     27 __attribute__((weak)) bool usb_vbus_state(void) {
     28 #ifdef USB_VBUS_PIN
     29     gpio_set_pin_input(USB_VBUS_PIN);
     30     wait_us(5);
     31     return gpio_read_pin(USB_VBUS_PIN);
     32 #else
     33     return true;
     34 #endif
     35 }