IRAM error on compiling

[PDE-Paul]

Board

ESP32 Custom Board

Device Description

Final Product (Custom Board) in market for 6 years

Hardware Configuration

Final Product in market for 6 years

Version

other

IDE Name

2.3.4

Operating System

Windows 11

Flash frequency

40

PSRAM enabled

no

Upload speed

115200

Description

Upgrading from 3.0.6 to 3.0.7 or 3.10 I now get an IRAM error

section .iram0.text' will not fit in region iram0_0_seg'

If I roll back to 3.0.6 this error disappears.

What has changed in the compiler?
Do I need to add something to my code?

I need to add some features and wish to use the latest version compiler, for now I will stay on 3.0.6

Sketch

Unable to post code as it is for a product that is being sold into the market. Compiled sketch is 1.8Mb using 3.0.6

Debug Message

IRAM0 segment data does not fit.
region `iram0_0_seg' overflowed by 1040 bytes

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[me-no-dev]

so both 3.0.7 and 3.1.0 cause this error? There are insignificant changes between 3.0.6 and 3.0.7. You can go through the code of your project and remove IRAM_ATTR from functions/methods to minimize the IRAM usage from your code. It is no longer required in Arduino anyway.

[PDE-Paul]

Hi, Thank you for the quick response. Ok found the only reference to IRAM_ATTR are all my interrupts, should these now be ARDUINO_ISR_ATTR?

[me-no-dev]

ARDUINO_ISR_ATTR is probably the best way to go. It will resolve to nothing by default. By default, interrupts in Arduino do not run in IRAM anymore

[PDE-Paul]

ok, confirmed compile successful, thank you, you fixed my code.