我正在通过MQTT发送GPS值。几次发送后，MQTT掉线了，无法连接到MQTT服务器，它会自行重置。
MQTT会自动断开连接，并通过以下消息将nodemcu重置。 MQTT失败，状态为-2
ets 2013年1月8日，第一个原因：2，启动模式：（3,7）
load 0x4010f000，len 1384，房间16 尾巴8 chksum 0x2d csum 0x2d v951aeffa 〜ld
期待解决方案。
我用了nodemcu lolin，为了获得GPS，我用了8m ublox m8n。
当用于通过MQTT发送普通字符串时，它工作正常，但在通过MQTT发送GPS值之后。 MQTT在几秒钟内失败。
#include <PubSubClient.h>;
const char* ssid = "test";
const char* password = "newagain";
const char* mqttServer = "XXXXXXXXXXXX";
const int mqttPort = 2123;
WiFiClient espClient;
PubSubClient client(espClient);
char MQTT_SERIAL_PUBLISH_CH[15] = "stat" ;
char MQTT_SERIAL_SUB_CH[10] = "bs1" ;
// GPS
#include <TinyGPS++.h>
#include <SoftwareSerial.h>
TinyGPSPlus gps; // The TinyGPS++ object
SoftwareSerial ss(4, 5); // The serial connection to the GPS device
String GPSinfo = "HAI";
void wifistart()
{
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.println("Connecting to WiFi..");
}
}
void setup() {
Serial.begin(115200);
ss.begin(9600);
wifistart();
Serial.println("Connected to the WiFi network");
reconnect1();
}
void loop()
{
if(WiFi.status() == WL_CONNECTED)
{
if (client.connected())
{
client.loop();
GPSS();
}
else if (!client.connected())
{
client.disconnect();
Serial.println("Forcing MQTT to connect");
reconnect1();
}
}
else
{
wifistart();
}
// delay(1000);
}
char * str1 ="HI";
void GPSS()
{
// Serial.println("INSIDE GPS");
while (ss.available() > 0)
{
if (gps.encode(ss.read()))
{
if (gps.location.isValid())
{
client.loop();
GPSinfo = String((gps.location.lat()),6) + String(",") + String((gps.location.lng()),6) + String(",") + String(gps.speed.kmph()) + String(",") + String(gps.altitude.feet()) + String(",") + String(gps.date.value()) ;
strtochar();
// GPSinfo.toCharArray(str1, 50 );
Serial.println(" ");
Serial.print(client.publish(MQTT_SERIAL_PUBLISH_CH, str1 ));
// Serial.println("delay Starts");
delay(1000);
// Serial.println("delay Ends");
if( client.publish(MQTT_SERIAL_PUBLISH_CH, str1 ) != 1)
{
reconnect1();
}
// Serial.print("Published DATA ");Serial.println(String(str1));
str1 ="0";
GPSinfo = "0";
}
}
}
}
void strtochar()
{
String s = GPSinfo ;
int n = s.length();
char char_array[n + 1];
strcpy(char_array, s.c_str());
strcpy(str1, s.c_str());
}
void reconnect1()
{
client.disconnect();
delay(1000);
client.setServer(mqttServer, mqttPort);
client.setCallback(callback);
if (!client.connected()) {
Serial.println("Connecting to MQTT...");
String clientId = "test";
clientId += String(random(1,1100), HEX);
if (client.connect(clientId.c_str()))
{
Serial.println("connected");
}
else
{
if(WiFi.status() == WL_CONNECTED)
{
Serial.print("failed with state ");
Serial.print(client.state());
Serial.print(" ");
Serial.println(client.connected());
}
else
{
wifistart();
}
}
}
client.publish(MQTT_SERIAL_PUBLISH_CH, "Started");
client.subscribe(MQTT_SERIAL_SUB_CH);
}
void callback(char* topic, byte* payload, unsigned int length)
{
Serial.print("Message arrived in topic: ");
Serial.println(topic);
Serial.print("Message:");
for (int i = 0; i < length; i++)
{
Serial.print((char)payload[i]);
}
Serial.println();
Serial.println("-----------------------");
}
这些是我在运行上面的代码时得到的输出。
Connecting to WiFi..
Connected to the WiFi network
Connecting to MQTT...
connected
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419 //Im not printing this but some how its here.
Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419
Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419
Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419
Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419
Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419
Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419
Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419
Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419
Connecting to MQTT...
failed with state -2 0
.077691,76.989806,0.43,0.00,200419
Connecting to MQTT...
Soft WDT reset
>>>stack>>>
ctx: sys
sp: 3fffed40 end: 3fffffb0 offset: 01b0
3fffffa0: 3fffdad0 00000000 3ffeea7c 40205c00
<<<stack<<<
ets Jan 8 2013,rst cause:2, boot mode:(3,7)
load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v951aeffa
~ld
Connecting to WiFi..
Connecting to WiFi..
Connected to the WiFi network
Connecting to MQTT...
connected