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qmk_firmware/platforms/avr/bootloaders/caterina.c
2022-05-14 13:35:49 +10:00

49 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/wdt.h>
__attribute__((weak)) void bootloader_jump(void) {
// this block may be optional
// TODO: figure it out
uint16_t *const bootKeyPtr = (uint16_t *)0x0800;
// Value used by Caterina bootloader use to determine whether to run the
// sketch or the bootloader programmer.
uint16_t bootKey = 0x7777;
*bootKeyPtr = bootKey;
// setup watchdog timeout
wdt_enable(WDTO_60MS);
// wait for watchdog timer to trigger
while (1) {
}
}
__attribute__((weak)) void mcu_reset(void) {
// setup watchdog timeout
wdt_enable(WDTO_60MS);
// wait for watchdog timer to trigger
while (1) {
}
}