[OBSERVED] disconnection after router reboot ESP8266 : with 512 ESP MIN MEMORY paramter
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Describe the bug
A clear and concise description of what the bug is.
my observation:
following configuration with 512 helps mqtt to get re-connect again when router is restarted and net gets online, but when i put 4096 , it dont reconnect automatically
in file : AsyncMqttClient_Generic.hpp
#ifndef MQTT_MIN_FREE_MEMORY
// #define MQTT_MIN_FREE_MEMORY 4096
#define MQTT_MIN_FREE_MEMORY 512
#endif
Steps to Reproduce
to reproduce the error
following is the hardware
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 460800
Changed.
Configuring flash size...
Expected behavior
expected behaviour should be it should autoconnect with 4096 value [ i may be not aware of that #define parameter, please enlighten is i am being blind to any obvious thing, thanks ]
Actual behavior
behaviour should be autoconected after router it rebooted , you can check this scene by running library on esp8266 as above and then reboot router from web ui control panel, and observe the disconnection in serial logs
Debug and AT-command log (if applicable)
[ logs when 512 size connect logs ]
12:58:55:641] Connecting to MQTT...␍␊
[12:58:55:666] <removed ip address here intentionally>␍␊
[12:58:55:823] Connected to MQTT broker: [MAIN] Free heap: 38248 bytes␊
[12:59:02:691] [MAIN] Free heap: 38656 bytes␊
[12:59:07:692] [MAIN] Free heap: 38656 bytes␊
[ log when 4096]
first it connected automtically but when in restart it it show freq disconnection
[13:11:04:773] Connecting to MQTT...␍␊
[13:11:04:797] <broker hidden>
[13:11:04:825] Connected to MQTT broker: [MAIN] Free heap: 40656 bytes␊
[13:11:14:435] [MAIN] Free heap: 40656 bytes␊
[13:11:19:437] [MAIN] Free heap: 40656 bytes␊
[13:11:24:437] [MAIN] Free heap: 40656 bytes␊
[13:11:29:439] [MAIN] Free heap: 37456 bytes␊
[13:11:34:440] [MAIN] Free heap: 37456 bytes␊
[13:11:38:925] Disconnected from MQTT.␍␊
[13:11:39:441] [MAIN] Free heap: 41816 bytes␊
[13:11:44:442] [MAIN] Free heap: 40144 bytes␊
[13:11:49:590] [MAIN] Free heap: 40144 bytes␊
[13:11:52:490] 192.168.0.102␍␊
[13:11:52:507] Connecting to MQTT...␍␊
[13:11:52:531] <broker hidden>
[13:11:54:591] [MAIN] Free heap: 37224 bytes␊
[13:11:59:515] Disconnected from MQTT.␍␊
[13:11:59:592] [MAIN] Free heap: 38448 bytes␊
[13:12:01:515] Connecting to MQTT...␍␊
[13:12:01:541] <broker hidden>
[13:12:04:593] [MAIN] Free heap: 38448 bytes␊
[13:12:08:515] Disconnected from MQTT.␍␊
[13:12:09:594] [MAIN] Free heap: 38448 bytes␊
[13:12:10:515] Connecting to MQTT...␍␊
[13:12:10:546] <broker hidden>
[13:12:14:596] [MAIN] Free heap: 38448 bytes␊
Screenshots
NA
Information
Please ensure to specify the following:
my included libraries:
#include <ESP8266WiFi.h>
#include <Ticker.h>
#include <AsyncMqtt_Generic.h>
#include <Hash.h>
#include <ESP8266WiFiMulti.h>
#include <ESPAsyncWebServer.h>
#include "fauxmoESP.h"
#include <DNSServer.h>
#include <PubSubClient.h>
#include <FS.h>
#include <ArduinoJson.h>
platform ini file as below
#platform = ${common.esp8266_platform_2_4_0}
platform = ${common.esp8266_platform_2_7_0}
# platform = ${common.esp8266_platform_2_4_1}
board = esp01_1m
#board = esp01
#board = esp12e
#board = esp01
#board_build.f_cpu = 80000000L
#for BTX type ic Z logo ic
board_build.flash_mode = dout
build_flags =
-g
#-D DEBUG_FAUXMO=Serial
#-D DEBUG_FAUXMO_VERBOSE_TCP=0
#-D DEBUG_FAUXMO_VERBOSE_UDP=0
-D PIO_FRAMEWORK_ARDUINO_LWIP_HIGHER_BANDWIDTH
#-D PIO_FRAMEWORK_ARDUINO_LWIP_HIGHER_BANDWIDTH
#-D PUYA_SUPPORT=1
#-D XMC_SUPPORT=1
lib_deps =
vintlabs/FauxmoESP @ 3.4
bblanchon/ArduinoJson @ 6.12
knolleary/PubSubClient @ 2.8
me-no-dev/ESP Async WebServer @ 1.2.2
; me-no-dev/ESPAsyncTCP @ 1.2.2
me-no-dev/AsyncTCP @ 1.1.1
khoih-prog/AsyncMQTT_Generic @ 1.8.0
code snippets from my code
void onMqttConnect(bool sessionPresent)
{
String node = "client" + String(ESP.getChipId());
String nodeid = node + " " + WiFi.localIP().toString();
node = String(ESP.getChipId());
String topicx = getParameterFromJson("topicname", "/config.json");
String nodex = "{\"node\":\"" + node + "\",\"topic\":\"" + topicx + "\",\"client\":\"" + nodeid + "\"}";
mqttClient.publish("modelStatus", 0, false, nodex.c_str());
mqttClient.subscribe(topicx.c_str(), 2);
Serial.print("Connected to MQTT broker: ");
}
void connectToMqtt()
{
Serial.println("Connecting to MQTT...");
// mqttClient.disconnect();
mqttClient.connect();
}
void onMqttDisconnect(AsyncMqttClientDisconnectReason reason)
{
(void)reason;
Serial.println("Disconnected from MQTT.");
if (WiFi.isConnected())
{
mqttReconnectTimer.once(2, connectToMqtt);
}
}
//in setup>>
wifiConnectHandler = WiFi.onStationModeGotIP(onWifiConnect);
wifiDisconnectHandler = WiFi.onStationModeDisconnected(onWifiDisconnect);
mqttClient.onConnect(onMqttConnect);
mqttClient.onDisconnect(onMqttDisconnect);
mqttClient.onSubscribe(onMqttSubscribe);
mqttClient.onUnsubscribe(onMqttUnsubscribe);
mqttClient.onMessage(onMqttMessage);
mqttClient.onPublish(onMqttPublish);
// mqttClient.setServer(MQTT_HOST, MQTT_PORT);
// String broker = getParameterFromJson("broker","/config.json");
// uint16_t port = 1883;
// Serial.println(broker);
mqttClient.setServer("brokerdomain_name", 1883);
// mqttClient.setServer("192.168.0.110", 1883);
connectToWifi();
There is some issue with your code, but I won't have time to figure out why
The real issue is you don;t have enough memory to run your code
Carefully look at the library code for ESP8266
AsyncMQTT_Generic/src/AsyncMqttClient_Generic_Impl.h
Lines 1331 to 1332 in fdf0c2a
from
uint16_t AsyncMqttClient::publish(const char* topic, uint8_t qos, bool retain, const char* payload, size_t length,
bool dup, uint16_t message_id)
{
(void) dup;
(void) message_id;
if (_state != CONNECTED || GET_FREE_MEMORY() < MQTT_MIN_FREE_MEMORY)
return 0;
AMQTT_LOGINFO("PUBLISH");
AsyncMqttClientInternals::OutPacket* msg = new AsyncMqttClientInternals::PublishOutPacket(topic, qos, retain, payload,
length);
_addBack(msg);
return msg->packetId();
}
If you don't have enough Free Memory =>GET_FREE_MEMORY() < 4096 will happen in extreme cases while GET_FREE_MEMORY() < 512 might not happen.
Try using ESP32 with larger memory size.
Good Luck,