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Hardware: ESP8266EX
Core Version: SDK:2.2.2-dev(38a443e)/Core:2.6.3=20603000/lwIP:STABLE-2_1_2_RELEASE/glue:1.2-16-ge23a07e/BearSSL:89454af
Development Env: Arduino IDE
Operating System: Windows
Module: LOLIN Wemos D1 mini Pro & Wemos D1 r2 mini
Flash Size: 16MB
lwip Variant: v2 Lower Memory and Higher Bandwidth
Flash Frequency:40Mhz
CPU Frequency:80Mhz
Upload Using:SERIAL
Upload Speed: 460800
At v2 Lower Memory and Higher Bandwidth I sawmemory leak each LOOP - 32 bytes or more. Try many options, with or without debug and so on... After ~26 minutes of run ESP goes to :oom and reboot with dump. Sometimes one or two or three loops go without a leak, but than mem leak continues.
If Iswitch to IwIP variant 1.4 Higher Bandwidth - memory leakstops and all work fine!
( SDK:2.2.2-dev(38a443e)/Core:2.6.3=20603000/lwIP:1.4.0rc2/BearSSL:89454af - that variant work fine) I can provide debug log but it will be the same as below, exclude memory leak.
#include<PubSubClient.h>#include<ESP8266WiFi.h>#defineESP8266#defineDEBUG1constchar* ssid ="zzzzzz";constchar* password ="xxxxxxx";constchar* mqtt_server ="111.222.222.222";constchar* mqtt_user ="zzzz";constchar* mqtt_pass ="zzzz";constchar* mqtt_clientId ="gost-temp";constchar* mqtt_ping_topic ="apr/home/ping";constchar* mqtt_online_message ="online";constchar* mqtt_last_will ="offline";constchar* mqtt_topic_base ="apr/home/";constint ping_time =30;bool firstRun =true;WiFiClient espClient;PubSubClientclient(espClient);uint32_t originalram;unsignedlong lastMeasure =0;voidsetup_wifi() {int zz =0;delay(10);#ifdef DEBUG Serial.println(); Serial.print("Connecting to"); Serial.println(ssid);#endif WiFi.mode(WIFI_STA); WiFi.begin(ssid, password);delay(500);while (WiFi.status() != WL_CONNECTED) {delay(100);#ifdef DEBUG Serial.print(".");#endif zz=zz+1;if (zz >=100) { ESP.restart(); } Serial.print(zz); }#ifdef DEBUG Serial.println(""); Serial.print("WiFi connected - ESP IP address:"); Serial.println(WiFi.localIP());#endifdelay(1000);}voidreconnect() {delay(500);while (!client.connected()) {#ifdef DEBUG Serial.print("Attempting MQTT connection...");#endif String mqtt_clientIdRand = mqtt_clientId; mqtt_clientIdRand +=String(random(0xffff), HEX);if (client.connect(String(mqtt_clientIdRand).c_str(), mqtt_user, mqtt_pass, (String(mqtt_ping_topic)).c_str(),0,1, mqtt_last_will)) {#ifdef DEBUG Serial.println("connected");#endif }else {#ifdef DEBUG Serial.print("failed, rc="); Serial.print(client.state()); Serial.println(" try again in 5 seconds");#endifdelay(5000); } }}voidsetup() {randomSeed(millis()); Serial.begin(115200);setup_wifi(); client.setServer(mqtt_server,1883);if (!client.connected()) {reconnect(); } client.loop(); client.publish(mqtt_ping_topic, mqtt_online_message); client.loop(); originalram = ESP.getFreeHeap();}voidloop() {if ((millis() - lastMeasure) > (ping_time *1000)) { lastMeasure =millis(); client.loop(); client.publish(mqtt_ping_topic, mqtt_online_message); client.loop();uint32_t ram = ESP.getFreeHeap(); Serial.printf("RAM: %d change %d\n", ram, (ram - originalram )); }delay(30);}
Debug log:
07:49:35.414 -> SDK:2.2.2-dev(38a443e)/Core:2.6.3=20603000/lwIP:STABLE-2_1_2_RELEASE/glue:1.2-16-ge23a07e/BearSSL:89454af07:49:35.414 -> 07:49:35.414 -> Connecting to XXXXX07:49:35.414 -> bcn 007:49:35.414 -> del if107:49:35.414 -> usl07:49:35.414 -> mode : sta(84:f3:eb:db:5a:3c)07:49:35.414 -> add if007:49:35.586 -> wifi evt: 807:49:36.171 -> .1.2wifi evt: 207:49:36.378 -> .3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23scandone07:49:39.389 -> state: 0 -> 2 (b0)07:49:39.389 -> .24state: 2 -> 3 (0)07:49:39.389 -> state: 3 -> 5 (10)07:49:39.389 -> add 007:49:39.389 -> aid 107:49:39.389 -> cnt 07:49:39.492 -> .2507:49:39.492 -> connected with XXXXXX, channel 607:49:39.561 -> dhcp client start...07:49:39.561 -> wifi evt: 007:49:39.561 -> .26ip:192.168.88.122,mask:255.255.255.0,gw:192.168.88.107:49:39.596 -> wifi evt: 307:49:39.666 -> .2707:49:39.666 -> WiFi connected - ESP IP address: 192.168.88.12207:49:41.182 -> Attempting MQTT connection...[hostByName] Host: 111.111.111.111 is a IP!07:49:41.182 -> :ref 107:49:41.216 -> :wr 70 007:49:41.216 -> :wrc 70 70 007:49:41.216 -> :ack 7007:49:41.216 -> :rn 407:49:41.216 -> :c0 1, 407:49:41.216 -> connected07:49:41.216 -> :wr 23 007:49:41.216 -> :wrc 23 23 007:49:41.285 -> :ack 2307:49:49.372 -> pm open,type:2 007:50:03.705 -> :rcl07:50:03.705 -> :abort07:50:05.117 -> RAM: 50008 change 129607:50:35.151 -> RAM: 49976 change 126407:51:05.188 -> RAM: 49944 change 123207:51:35.216 -> RAM: 49944 change 123207:52:05.217 -> RAM: 49944 change 123207:52:35.249 -> RAM: 49880 change 116807:53:05.287 -> RAM: 49816 change 110407:53:35.307 -> RAM: 49784 change 107207:54:05.336 -> RAM: 49784 change 107207:54:35.374 -> RAM: 49688 change 97607:55:05.382 -> RAM: 49560 change 84807:55:35.429 -> RAM: 49464 change 75207:56:05.438 -> RAM: 49464 change 75207:56:35.483 -> RAM: 49336 change 62407:57:05.512 -> RAM: 49080 change 36807:57:35.547 -> RAM: 48856 change 14407:58:05.566 -> RAM: 48648 change -6407:58:35.574 -> RAM: 48488 change -22407:59:05.604 -> RAM: 48008 change -70407:59:35.638 -> RAM: 47528 change -118408:00:05.669 -> RAM: 47368 change -134408:00:35.683 -> RAM: 47176 change -1536Metadata
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