/* 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 "platform_deps.h" static void disable_jtag(void) { // To use PF4-7 (PC2-5 on ATmega32A), disable JTAG by writing JTD bit twice within four cycles. #if (defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)) MCUCR |= _BV(JTD); MCUCR |= _BV(JTD); #elif defined(__AVR_ATmega32A__) MCUCSR |= _BV(JTD); MCUCSR |= _BV(JTD); #endif } void platform_setup(void) { disable_jtag(); }