55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/*
|
|
Copyright 2022, Savanni D'Gerinel <savanni@luminescent-dreams.com>
|
|
|
|
This file is part of Savanni's AVR library.
|
|
|
|
Lumeto 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.
|
|
|
|
Lumeto 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 Lumeto. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "sk9822.h"
|
|
|
|
void send_byte(dio_t data_pin, dio_t clock_pin, uint8_t byte) {
|
|
for (int i = 7; i >= 0; i--) {
|
|
dio_set(&data_pin, byte & _BV(i));
|
|
|
|
dio_set(&clock_pin, 1);
|
|
dio_set(&clock_pin, 0);
|
|
}
|
|
}
|
|
|
|
void send_start(dio_t data_pin, dio_t clock_pin) {
|
|
dio_set(&clock_pin, 0);
|
|
send_byte(data_pin, clock_pin, 0);
|
|
send_byte(data_pin, clock_pin, 0);
|
|
send_byte(data_pin, clock_pin, 0);
|
|
send_byte(data_pin, clock_pin, 0);
|
|
}
|
|
|
|
void send_term(dio_t data_pin, dio_t clock_pin) {
|
|
send_byte(data_pin, clock_pin, 0xff);
|
|
send_byte(data_pin, clock_pin, 0xff);
|
|
send_byte(data_pin, clock_pin, 0xff);
|
|
send_byte(data_pin, clock_pin, 0xff);
|
|
dio_set(&clock_pin, 1);
|
|
}
|
|
|
|
void sk9822_init(sk9822_t *lights) {
|
|
dio_set_direction(&lights->data_pin, LINE_OUT);
|
|
dio_set_direction(&lights->clock_pin, LINE_OUT);
|
|
}
|
|
|
|
void sk9822_send(sk9822_t *lights, rgb_t * pixels, uint8_t count) {
|
|
send_start(lights->data_pin, lights->clock_pin);
|
|
for (uint8_t i = 0; i < count; i++) {
|
|
send_byte(lights->data_pin, lights->clock_pin, 0xe0 + pixels[i].brightness);
|
|
send_byte(lights->data_pin, lights->clock_pin, pixels[i].r);
|
|
send_byte(lights->data_pin, lights->clock_pin, pixels[i].b);
|
|
send_byte(lights->data_pin, lights->clock_pin, pixels[i].g);
|
|
}
|
|
send_term(lights->data_pin, lights->clock_pin);
|
|
}
|