/* Copyright 2018 amnesia0287
 *
 * 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 2 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 "singa.h"

void backlight_init_ports(void) {
    // initialize pins D0, D1, D4 and D6 as output
    setPinOutput(D0);
    setPinOutput(D1);
    setPinOutput(D4);
    setPinOutput(D6);

    // turn backlight LEDs on
    writePinHigh(D0);
    writePinHigh(D1);
    writePinHigh(D4);
    writePinHigh(D6);
}

void backlight_set(uint8_t level) {
    if (level == 0) {
        // turn backlight LEDs off
        writePinLow(D0);
        writePinLow(D1);
        writePinLow(D4);
        writePinLow(D6);
    } else {
        // turn backlight LEDs on
        writePinHigh(D0);
        writePinHigh(D1);
        writePinHigh(D4);
        writePinHigh(D6);
    }
}