qmk-firmware/keyboards/gray_studio/hb85/hb85.c

/*
Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>, 
          2019 fcoury <felipe.coury@gmail.com>

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 <string.h>

#include "rgblight.h"

#include "i2c.h"
#include "quantum.h"

#ifdef RGBLIGHT_ENABLE
extern rgblight_config_t rgblight_config;

void rgblight_set(void) {
    if (!rgblight_config.enable) {
        for (uint8_t i = 0; i < RGBLED_NUM; i++) {
            led[i].r = 0;
            led[i].g = 0;
            led[i].b = 0;
        }
    }

    i2c_init();
    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
}
#endif

__attribute__ ((weak))
void matrix_scan_user(void) {
}

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

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

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