adding Handler serveStatic cause : region `iram0_0_seg' overflowed ESP32

[johnnytolengo]

Platform

ESP32

IDE / Tooling

PlatformIO

What happened?

Hi, my ENV:

Chip is ESP32-D0WDQ6

[env:dkdev]
platform = [email protected]
framework = arduino
lib_compat_mode = strict
lib_ldf_mode = chain

After calling:
web_server->serveStatic("/", LittleFS, "/www");

I got the following error:

/home/mm/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: .pio/build/dk_st15_v3/firmware.elf section `.iram0.text' will not fit in region `iram0_0_seg'
/home/mm/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: IRAM0 segment data does not fit.
/home/mm/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: region `iram0_0_seg' overflowed by 660 bytes
collect2: error: ld returned 1 exit status

I tried to edit the ~/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/ld/memory.ld
and increase the iram0_0_seg Memory , after that the compile success, no errors. The uploaded code runs badly in a very weird way, eg. printf not working anymore, the web server runs in an extrange way (runs some old version written API)

if I remove the web_server->serveStatic("/", LittleFS, "/www"); line the ESP32 is again working and even compliles without iram0_0_seg oveflow error but without web.

I've been days trying to debug that without success, I have not clue where is the issue.

Stack Trace

/home/mm/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: .pio/build/dk_st15_v3/firmware.elf section .iram0.text' will not fit in region iram0_0_seg'
/home/mm/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: IRAM0 segment data does not fit.
/home/mm/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: region `iram0_0_seg' overflowed by 660 bytes
collect2: error: ld returned 1 exit status

Minimal Reproductible Example (MRE)

#include <Arduino.h>
#include <MyMain.h> //<--Webserver declared here
#include <MainCode.h>

using namespace std;
MyMain myMain;
MainCode mainCode(myMain);

void setup() {
Serial.begin(115200);
vTaskDelay(1000/portTICK_PERIOD_MS);
mainCode.begin(); //<-- Webserver started here from another class
}

void loop() {
}

I confirm that:

• I have read the documentation.
• I have searched for similar discussions.
• I have searched for similar issues.
• I have looked at the examples.
• I have upgraded to the lasted version of ESPAsyncWebServer (and AsyncTCP for ESP32).

[mathieucarbou]

@johnnytolengo this issue is not related at all to this library

[johnnytolengo]

@mathieucarbou I understand, but I have a doubt, after websever.begin() can I declare more Handlers?

eg:

websever->begin() ;
web_server->on("/somepath", HTTP_GET, [this](AsyncWebServerRequest *request){
//Some actions..
}

[mathieucarbou]

Yes. You can even end and call begin again.