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
|
#define WITH_HTTP
#define WITH_UDP
//#define WITH_MQTT
//#define WITH_OTA // flash size needs to be 2* sketch size :/
//#define WITH_SERIAL // not used yet
#define SILENT_STARTUP
#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <WiFiClient.h>
#include <ArduinoJson.h>
#ifdef WITH_OTA
#include <ArduinoOTA.h>
#endif
#ifdef WITH_HTTP
#include <ESP8266WebServer.h>
#endif
#ifdef WITH_UDP
#include <WiFiUdp.h>
#endif
#ifdef WITH_MQTT
#include <PubSubClient.h>
#endif
const char* ssid = "";
const char* password = "";
#define ME "esplamp-1"
#ifdef WITH_MQTT
const char* mqtt_server = "";
#endif
#ifdef WITH_UDP
const int udpPort = 2391;
IPAddress multicastAddr(239, 1, 0, 0);
#endif
#ifdef WITH_MQTT
const char* connectTopic = "api/" ME "/connected";
const char* outTopic = "api/" ME "/status/rgb";
const char* inTopic = "api/" ME "/set/rgb";
const char* updateTopic = "api/" ME "/get/rgb";
#endif
// R G B
const int leds[] = {2, 0, 3}; // remember: TX is inverted, not used here
unsigned int state[] = {0, 0, 0};
unsigned char cstate[] = {0, 0, 0};
DynamicJsonBuffer jsonBuffer;
char cJson[50];
#ifdef WITH_HTTP
ESP8266WebServer server(80);
#endif
#ifdef WITH_UDP
WiFiUDP RAWudp;
#endif
#ifdef WITH_MQTT
WiFiClient espClient;
PubSubClient mqtt(espClient);
#endif
/* hardware access */
void writeJson() {
JsonObject& root = jsonBuffer.createObject();
root["red"] = state[0];
root["green"] = state[1];
root["blue"] = state[2];
root.printTo(cJson, sizeof(cJson));
}
void updateLeds(bool fast) {
for(int i=0; i<3; i++)
analogWrite(leds[i], state[i]);
if (!fast) {
writeJson();
#ifdef WITH_MQTT
if (mqtt.connected()) mqtt.publish(outTopic, cJson, true);
#endif
}
}
#ifdef WITH_HTTP
/* http API */
void handleRoot() {
if(server.hasArg("red"))
state[0] = server.arg("red").toInt();
if(server.hasArg("green"))
state[1] = server.arg("green").toInt();
if(server.hasArg("blue"))
state[2] = server.arg("blue").toInt();
updateLeds(false);
server.send(200, "application/json", cJson);
}
#endif
#ifdef WITH_MQTT
/* MQTT API */
void handleMqtt(char* topic, byte* payload, unsigned int length) {
if (strcmp(topic, inTopic) == 0) {
JsonObject& root = jsonBuffer.parseObject((char*)payload);
if (!root.success()) return;
state[0] = root["red"];
state[1] = root["green"];
state[2] = root["blue"];
updateLeds(false);
}
if (strcmp(topic, updateTopic) == 0) {
updateLeds(false); // force update /rgb information
}
}
void connectMqtt() {
// connect(id, willTopic, willQoS, willRetain, willMessage)
if (mqtt.connect(ME, connectTopic, 2, true, "offline")) {
// topic, msg, retain
mqtt.publish(connectTopic, "online", true);
mqtt.subscribe(inTopic);
mqtt.subscribe(updateTopic);
}
}
#endif
#ifdef WITH_UDP
/* UDP API */
// expected to be most time critical
void handleUdp() {
if (!RAWudp)
RAWudp.beginMulticast(WiFi.localIP(), multicastAddr, udpPort);
if (!RAWudp)
return;
if (RAWudp.parsePacket()) {
RAWudp.read(cstate, 3);
for(int i=0; i<3; i++)
state[i] = cstate[i] << 2;
updateLeds(true); // skip publishing
}
}
#endif
/* core code */
void setup() {
#ifdef WITH_SERIAL
Serial.begin(115200);
#endif
WiFi.begin(ssid, password);
for(int i=0; i<3; i++)
pinMode(leds[i], OUTPUT);
while(WiFi.status() != WL_CONNECTED) {
#ifndef SILENT_STARTUP
// blink three times
for(int i=0; i<3; i++) {
if(state[i] < 512)
state[i] = 1023;
else
state[i] = 0;
}
updateLeds();
#endif
delay(500);
}
WiFi.hostname(ME);
MDNS.begin(ME, WiFi.localIP());
#ifdef WITH_OTA
ArduinoOTA.setHostname(ME);
ArduinoOTA.begin();
#endif
#ifdef WITH_HTTP
server.on("/", handleRoot);
server.begin();
MDNS.addService("http", "tcp", 80);
#endif
#ifdef WITH_UDP
MDNS.addService("udp", "udp", udpPort);
#endif
#ifdef WITH_MQTT
mqtt.setServer(mqtt_server, 1883);
mqtt.setCallback(handleMqtt);
#endif
}
void loop() {
#ifdef WITH_OTA
ArduinoOTA.handle();
#endif
#ifdef WITH_HTTP
server.handleClient();
#endif
#ifdef WITH_UDP
handleUdp();
#endif
#ifdef WITH_MQTT
if (!mqtt.connected())
connectMqtt();
mqtt.loop();
#endif
}
|
