summaryrefslogtreecommitdiffstats
path: root/sw/dmx2artnet/src/main.cpp
blob: 21ddd187efc2824ead51c646e8d7deb715a1d209 (plain) (blame)
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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
#define DO_SLIP 1
#define DO_WIFI 1
#include <Arduino.h>
#include <WiFiUdp.h>
#ifdef DO_WIFI
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
WiFiUDP u;
#endif
#define END 0xc0
#define ESC 0xdb
#define ESC_END 0xdc
#define ESC_ESC 0xdd
struct artnet {
	char name[8]; // Art-Net\0
	char opcode[2]; // 0x5000 in LE: { 0x00, 0x50 }
	uint8_t version_hi; // 0
	uint8_t version_lo; // 14
	uint8_t sequence; // set to 0 to disable sequencing
	uint8_t physical; // original universe
	uint8_t sub_uni;
	uint8_t net;
	uint8_t length_hi;
	uint8_t length_lo;
	unsigned char data[512]; // increase for fun

} __attribute__((packed));
struct udp {
	uint16_t srcport __attribute__((packed));
	uint16_t dstport __attribute__((packed));
	uint16_t length __attribute__((packed));
	uint16_t checksum __attribute__((packed));
} __attribute__((packed));
#define LOW_DELAY (1 << 4)
#define HIGH_THROUGHPUT (1 << 3)
#define HIGH_RELIABILITY (1 << 2)
#define ROUTINE (0 << 5)
#define PRIORITY (1 << 5)
#define IMMEDIATE (1 << 6)
#define FLASH (PRIORITY | IMMEDIATE)
#define FLASH_OVERRIDE (1 << 7)
#define CRITICAL (FLASH_OVERRIDE | PRIORITY)
#define INETCTRL (FLASH_OVERRIDE | IMMEDIATE)
#define NETCTRL (FLASH_OVERRIDE | FLASH)
#define HEADLENOR (1 << 6) /* always bitwiseOR the headlen with this to apply the version number */
#define EVIL (1 << 15)
#define DF (1 << 14)
#define MF (1 << 13)
#define ICMP 1
#define TCP 6
#define UDP 17
struct ip {
	uint8_t headlen;
	uint8_t srvtype;
	uint16_t length __attribute__((packed));
	uint16_t identifier __attribute__((packed));
	uint16_t foffset __attribute__((packed));
	uint8_t ttl;
	uint8_t protocol;
	uint16_t checksum;
	unsigned char src[4];
	unsigned char dst[4];
} __attribute__((packed));
struct artnet_over_slip {
	struct ip ip;
	struct udp udp;
	struct artnet artnet;
} __attribute__((packed));
struct artnet_over_slip p;
unsigned long č = 0;

volatile unsigned w = 0;
/* volatile unsigned long last_fall = 0;
volatile unsigned long mark_after_break = 0;
volatile unsigned char led = 0;
// volatile unsigned send = 0;
IRAM_ATTR void isr () {
	if (digitalRead(D6) == LOW) {
		if (mark_after_break) {
			// mark_after_break = 0;
			// send = w-1;
			// w = 0;
			mark_after_break = w = 0;

#ifndef DO_SLIP
			digitalWrite(D4, led++ % 2);
#endif
		}
		last_fall = micros();
	} else {
		if (micros() - last_fall > 87)
			mark_after_break++;
	}
} */

void setup () {
	pinMode(D6, INPUT_PULLUP);
	Serial.begin(250000, SERIAL_8N2);
	Serial.swap();
#ifdef DO_SLIP
	Serial1.begin(/* MONITOR_SPEED */ 115200);
#else
	pinMode(D4, OUTPUT);
#endif
#ifdef DO_WIFI
	// WiFi.softAP("dmx2artnet", NULL, 11, 0, 8);
	// WiFi.begin("OpenWrt", NULL);
	WiFi.begin("Hell Patrol", WIFI_PW);
	u.begin(6454);
#endif
	sprintf(p.artnet.name, "Art-Net");
	p.artnet.opcode[0] = 0x00;
	p.artnet.opcode[1] = 0x50;
	p.artnet.version_hi = 0;
	p.artnet.version_lo = 14;
	p.artnet.sequence = 0;
	p.artnet.physical = 0;
	p.artnet.sub_uni = 0;
	p.artnet.net = 0;
	if (digitalRead(D6) == LOW)
		p.udp.srcport = p.udp.dstport = htons(6455);
	else
		p.udp.srcport = p.udp.dstport = htons(6454);
	p.udp.checksum = 0;
	p.ip.headlen = HEADLENOR | 5;
	p.ip.srvtype = 0;
	p.ip.foffset = 0;
	p.ip.ttl = 255;
	p.ip.protocol = UDP;
	p.ip.src[0] = 2;
	p.ip.src[1] = (ESP.getChipId() & 0xff0000) >> 16;
	p.ip.src[2] = (ESP.getChipId() & 0xff00) >> 8;
	p.ip.src[3] = (ESP.getChipId() & 0xff);
	memset(p.ip.dst, 255, 4);
	// attachInterrupt(digitalPinToInterrupt(D6), isr, CHANGE);
}
unsigned char recording[sizeof p.artnet.data * 2];
#ifdef DO_SLIP
char slip_buf[sizeof p * 2 + 1];
unsigned slip_off = 0;
unsigned slip_len = 0;
#endif
#define SLIP Serial1
void loop () {
#ifdef DO_SLIP
	unsigned avail = SLIP.availableForWrite();
	if (slip_off < slip_len && avail) {
		if (avail > slip_len-slip_off)
			avail = slip_len-slip_off;
		slip_off += SLIP.write(slip_buf+slip_off, avail);
	}
#endif
	if (Serial.available()) {
		č = micros();
		if (w < sizeof p.artnet.data * 2)
			recording[w++] = Serial.read();
		else
			Serial.read();
	}
	if (č + 200 < micros() && w) {
	// if (send) {
		unsigned t = 0;
		if (w == sizeof p.artnet.data) // če smo break zaznali kot bajt, ga odstranimo
			t = 1;
		unsigned l = w-t-1; // en je tip
		/* for (T = 0; T < w; T++) // prvi kanal ne sme biti 0, tako zaznamo začetek paketa
			if (recording[T] > 1)
				break; */
		/* for (unsigned i = 0; i < sizeof p.artnet.data; i++) // takes too long???
			if (!(hack_for_midi_flash && recording[t + 1] == 255))
				p.artnet.data[i] = recording[t + 1]; */
		memcpy(p.artnet.data, recording + t + 1, sizeof p.artnet.data);
		if (l > sizeof p.artnet.data)
			l = sizeof p.artnet.data;
		/* l++;
		while (--l)
			if (p.data[l-1])
				break; */
		if (!recording[t]) {
			p.artnet.length_hi = l / 256;
			p.artnet.length_lo = l % 256;
#ifdef DO_WIFI
			IPAddress b(255, 255, 255, 255);
			u.beginPacket(b, 6454);
			u.write((unsigned char *) &p.artnet, sizeof p.artnet - sizeof p.artnet.data + l);
			u.endPacket();
#endif
#ifdef DO_SLIP
			if (slip_off >= slip_len) {
				p.ip.identifier = htons(millis());
				p.udp.length = htons(sizeof p.udp + sizeof p.artnet - sizeof p.artnet.data + l);
				p.ip.length = htons(sizeof p - sizeof p.artnet.data + l);
				p.ip.checksum = 0;
				uint32_t sum = 0;
				for (unsigned i = 0; i < sizeof p.ip/2+sizeof p.ip%2; i++)
					sum += ntohs(((uint16_t *) &p)[i]);
				while (sum >> 16)
					sum = (sum >> 16) + sum % 65536;
				p.ip.checksum = htons(~sum);
				slip_len = 0;
				slip_off = 0;
				for (unsigned i = 0; i < sizeof p; i++) {
					unsigned char val = ((unsigned char *) &p)[i];
					switch (val) {
						case ESC:
							slip_buf[slip_len++] = ESC;
							slip_buf[slip_len++] = ESC_ESC;
							break;
						case END:
							slip_buf[slip_len++] = ESC;
							slip_buf[slip_len++] = ESC_END;
							break;
						default:
							slip_buf[slip_len++] = val;
							break;
					}
				}
				slip_buf[slip_len++] = END;
			}
#endif
		}
		/*
		Serial1.println("dolžina podatkov " + String(w-T) + ", tip: " + String(t));
		for (unsigned i = 0; i < l; i++)
			if (p.artnet.data[i])
				Serial1.println("\t" + String(i+1) + ": " + String(p.artnet.data[i]));
		*/
		w = 0;
	}
}