Dimmer.ino
2.69 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
/*###########################################################################
copyright qqqlab.com / github.com/qqqlab
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 "qqqDALI.h"
Dali dali;
//ATMEGA328 specific
#define TX_PIN 3
#define RX_PIN 4
//is bus asserted
uint8_t bus_is_high() {
return digitalRead(RX_PIN); //slow version
//return PIND & (1 << 4); //fast version
}
//assert bus
void bus_set_low() {
digitalWrite(TX_PIN,HIGH); //opto slow version
//PORTD |= (1 << 3); //opto fast version
//digitalWrite(TX_PIN,LOW); //diy slow version
//PORTD &= ~(1 << 3); //diy fast version
}
//release bus
void bus_set_high() {
digitalWrite(TX_PIN,LOW); //opto slow version
//PORTD &= ~(1 << 3); //opto fast version
//digitalWrite(TX_PIN,HIGH); //diy slow version
//PORTD |= (1 << 3); //diy fast version
}
void bus_init() {
//setup rx pin
pinMode(4, INPUT);
//setup tx pin
pinMode(3, OUTPUT);
//setup tx timer interrupt
TCCR1A = 0;
TCCR1B = 0;
TCNT1 = 0;
OCR1A = (F_CPU + 8 * DALI_BAUD / 2) / (8 * DALI_BAUD); // compare match register at baud rate * 8
TCCR1B |= (1 << WGM12); // CTC mode
TCCR1B |= (1 << CS10); // 1:1 prescaler
TIMSK1 |= (1 << OCIE1A); // enable timer compare interrupt
}
ISR(TIMER1_COMPA_vect) {
dali.timer();
}
void setup() {
Serial.begin(115200);
Serial.println("DALI Dimmer Demo");
dali.begin(bus_is_high, bus_set_high, bus_set_low);
bus_init();
}
#define MIN_LEVEL 100 //most LED Drivers do not get much lower than this
int16_t level = 254; //254 is max level, 1 is min level (if driver supports it), 0 is off
int8_t level_step = 4;
void loop() {
Serial.print("set level: ");
Serial.println(level);
dali.set_level(level);
level+=level_step;
if(level>=254) {
level = 254;
level_step = -level_step;
}
if(level<MIN_LEVEL) {
level = MIN_LEVEL;
level_step = -level_step;
}
}