qmk_firmware/platforms/avr/bootloaders/bootloadhid.c

41 lines
1.3 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 "bootloader.h"
#include <avr/eeprom.h>
#include <avr/wdt.h>
__attribute__((weak)) void bootloader_jump(void) {
// force bootloadHID to stay in bootloader mode, so that it waits
// for a new firmware to be flashed
// NOTE: this byte is part of QMK's "magic number" - changing it causes the EEPROM to be re-initialized
// thus every time the device is flashed the EEPROM will be wiped
eeprom_write_byte((uint8_t *)1, 0x00);
// watchdog reset
wdt_enable(WDTO_250MS);
for (;;)
;
}
__attribute__((weak)) void mcu_reset(void) {
// watchdog reset
wdt_enable(WDTO_250MS);
for (;;)
;
}