-
Notifications
You must be signed in to change notification settings - Fork 0
/
MQTT.ino
96 lines (80 loc) · 2.14 KB
/
MQTT.ino
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
#include <ESP8266WiFi.h>
#include <MQTT.h>
#include <PubSubClient.h>
#define lm35 A0
float rawvalue = 0;
float milivolt = 0;
float celcius = 0;
const char* ssid = "MI A1";
const char* password = "angga010899";
const char* mqtt_server = "m12.cloudmqtt.com";
const char *mqtt_user = "jzdgxkrk";
const char *mqtt_pass = "8oJUquTPzj0X";
WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMillis = 0;
char celc[4];
void setup_wifi() {
delay(100);
//connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
randomSeed(micros());
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void callback(char* topic, byte* payload, unsigned int length) {
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
}
void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.print("Attempting MQTT connection...");
// Create a random client ID
String clientId = "ESP8266Client-";
clientId += String(random(0xffff), HEX);
// Attempt to connect
if (client.connect(clientId.c_str(), mqtt_user, mqtt_pass)) {
Serial.println("connected");
// ... and resubscribe
delay(1000);
} else {
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}
void setup() {
Serial.begin(115200);
pinMode(lm35, INPUT);
setup_wifi();
client.setServer(mqtt_server, 10668);
client.setCallback(callback);
reconnect();
}
void loop() {
if (!client.connected()) {
reconnect();
}
rawvalue = analogRead(lm35);
milivolt = (rawvalue / 2048.0) * 3300;
celcius = milivolt * 0.1;
gcvt(celcius,4,celc);
client.publish("test1",celc);
Serial.println(celcius);
client.loop();
delay(1000);
}