How to set CONFIG_ARDUINO_LOOP_STACK_SIZE?

[torntrousers]

Hardware:

Board: Heltec ESP32
Core Installation version: 1.0.5

Description:

Updating to the ESP32 Arduino core 1.0.5 I see there is now a define for CONFIG_ARDUINO_LOOP_STACK_SIZE in main.cpp, how can I set that? I've tried the sketch below but it doesn't get picked up.

Sketch:

#define CONFIG_ARDUINO_LOOP_STACK_SIZE 8192*4

void setup() {
  Serial.begin(115200); Serial.println();
  Serial.println(uxTaskGetStackHighWaterMark(NULL));
}

void loop() {
}

Debug Messages:

That sketch outputs 7524, whereas if I just update the stack size in main.cpp then uxTaskGetStackHighWaterMark does show the change.

Thanks for any pointers.

[me-no-dev]

You can not change it from within ArduinoIDE, but you should check first why you would need such a large stack in the loop task. That is not normal/OK

[torntrousers]

I'm using mutual TLS with BearSSL or MbedTLS, both of which seem to use a lot of stack.
Presently I've just been going into main.cpp and updating the stack size in there, I guess I can continue with that but just wonder seeing as there is the new CONFIG_ARDUINO_LOOP_STACK_SIZE define if there is some better way.

Is there some other config place where I could set CONFIG_ARDUINO_LOOP_STACK_SIZE and have the Arduino environment pickup the changed value?

Probably not the right place to ask but ... or what about with platformio - does that have way to set CONFIG_ARDUINO_LOOP_STACK_SIZE ?

[chegewara]

32kB is a huge stack size. Maybe solution would be to do something like that:

• in setup create new task with stack size you need,
• in setup delete default looperTask with vTaskDelete(NULL)
• use that task just like internal arduino loopeTask,

[torntrousers]

I've not tried fine tunning that size to workout what a minimal value is, just the default doesn't work and 8192*4 does.

I just saw in the latest code it now has this define specifically coded to look like you could set it from somewhere else - https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/main.cpp#L20-L22 - so thought I'd ask where that somewhere else is.

Should I just close this ticket if its not actually possible?

[obones]

People over at PlatformIO have suggested two possible changes:
https://community.platformio.org/t/esp32-stack-configuration-reloaded/20994/2

It would be very nice if there was a user configurable option for this.

[torntrousers]

There is this: #5173

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