Heap is running out #2967
Comments
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I made some investigations: Check the following very simple sketch: #include <ESP8266WiFi.h>
const char* ssid = S_SSID;
const char* password = S_PASSWORD;
// Create an instance of the server
// specify the port to listen on as an argument
WiFiServer server(80);
void setup() {
Serial.begin(115200);
// Connect to WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.println(WiFi.localIP());
}
void loop() {
Serial.write(27); //Print "esc"
Serial.print("[0;0H"); // Terminal command cursor Home
// Serial.print("[2J"); // Terminal command clear-screen
Serial.print(F("Free Heap Size:\t")); Serial.print(ESP.getFreeHeap()); Serial.println(F(" Bytes"));
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Wait until the client sends some data
Serial.println("new client");
while(!client.available()){
delay(1);
}
// Read the first line of the request
String req = client.readStringUntil('\r');
Serial.println(req);
client.flush();
}
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...ir recovers, but it takes MINUTES! |
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... and if you keep f5 pressed exception 28 or 29 occours. „Nihil est in ESP, quod non fuerit in intellectu" - Nichts ist im ESP, was zuvor nicht im Verstand war. |
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@OrakelKSL is this issu still valid? |
devyte
added
the
waiting for feedback
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Old issue and no feedback in over a month => closing. |
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there is a workaround for running out of heap due to sockets kept in TIME_WAIT. |
Basic Infos
Hardware
Hardware: ESP-12 (NodeMCU V2)
Core Version: 2.3.0
Description
As you can see in serial monitor: If you are tilting your mobile heap is running out quickly.
Settings in IDE
Module: NodeMCU 1.0
Flash Size: 4MB
CPU Frequency: 80Mhz
Flash Mode: ?qio?
Flash Frequency: 40Mhz
Upload Using: OTA / SERIAL
Reset Method: ck / nodemcu
Sketch
Debug Messages
Heap started with 40192 and runs down to:
�[2JFree Heap Size: 272 Bytes
GET /engines/285,371 HTTP/1.1
[285][371]
Zykluszeit: 216
Exception (28):
epc1=0x4020498f epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000008 depc=0x00000000
ctx: sys
sp: 3ffff990 end: 3fffffb0 offset: 01a0
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