2 Copyright 2017 MechMerlin <mechmerlin@gmail.com>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #include <avr/interrupt.h>
20 #include <util/delay.h>
21 #include "indicator_leds.h"
30 #define NS_PER_SEC (1000000000L)
31 #define CYCLES_PER_SEC (F_CPU)
32 #define NS_PER_CYCLE (NS_PER_SEC / CYCLES_PER_SEC)
33 #define NS_TO_CYCLES(n) ((n) / NS_PER_CYCLE)
35 void send_bit_d4(bool bitVal) {
38 "sbi %[port], %[bit] \n\t"
39 ".rept %[onCycles] \n\t"
42 "cbi %[port], %[bit] \n\t"
43 ".rept %[offCycles] \n\t"
47 [port] "I" (_SFR_IO_ADDR(PORTD)),
49 [onCycles] "I" (NS_TO_CYCLES(LED_T1H) - 2),
50 [offCycles] "I" (NS_TO_CYCLES(LED_T1L) - 2));
53 "sbi %[port], %[bit] \n\t"
54 ".rept %[onCycles] \n\t"
57 "cbi %[port], %[bit] \n\t"
58 ".rept %[offCycles] \n\t"
62 [port] "I" (_SFR_IO_ADDR(PORTD)),
64 [onCycles] "I" (NS_TO_CYCLES(LED_T0H) - 2),
65 [offCycles] "I" (NS_TO_CYCLES(LED_T0L) - 2));
70 _delay_us((RES / 1000UL) + 1);
73 void send_value(uint8_t byte) {
74 for(uint8_t b = 0; b < 8; b++) {
75 send_bit_d4(byte & 0b10000000);
80 // Send the LED indicators to the WS2811S chips
81 void indicator_leds_set(bool leds[8]) {
85 for(led_cnt = 0; led_cnt < 8; led_cnt++)
86 send_value(leds[led_cnt] ? 255 : 0);