After bluetooth suppor include, IRAM0 overflow!

[hash6iron]

Hi @pschatzmann.

I try to add bluetooth support in addition a several things already added , but complier says me.

/firmware.elf section `.iram0.text' will not fit in region `iram0_0_seg'
/ld.exe: IRAM0 segment data does not fit.
ld.exe: region `iram0_0_seg' overflowed by 2440 bytes

Is possible to reduce use of IRAM_ATTR o any another solution?

[pschatzmann]

I think you just forgot to set a proper partition scheme...
Don't allocate big array ! Use psram instead...

[hash6iron]

@pschatzmann,

Currently this is my custom partition file.

# Name,   Type, SubType, Offset,  Size, Flags
nvs,      data, nvs,     0x9000,  0x5000,
otadata,  data, ota,     0xe000,  0x2000,
app0,     app,  ota_0,   0x010000, 0x3E0000,
coredump, data, coredump,0x3F0000,0x10000,

What do you recommend to add?
Thanks in advance.

[hash6iron]

Ok rainmaker works but I have the same problem, IRAM0 overflow

[pschatzmann]

What exactly are you doing ?
Are you using some other libraries that mark their ISR methods to be stored in IRAM ?
I suggest that you check the generated .map file to investigate what's ending up in IRAM

IRAM0 (Instruction RAM 0) is the region where code marked with IRAM_ATTR (or functions that must run from RAM, like interrupt handlers) is stored.

It’s typically only 128 KB on standard ESP32 chips.

[hash6iron]

Hi @pschatzmann.

Yes, I using mainly AudioTools, MP3, WAV, FLAC decoder, metadata filtering, measurement, EQ and other audio objects but all works fine until add bluetooth (A2DPStream) object from AudioTools, then, Is it possible reduce IRAM used removing innecesary libraries in AudioTool? How Can I do it?

Thanks in advance.

[pschatzmann]

Not sure if this helps, but you can try to allocate the objects on the heap if you need them.
Maybe a better solution might be to replace the A2DP with a dedicated hardware module

[hash6iron]

How Can I do it? Do you talk about BluetoothA2DPStream object? I'd like not need any additional hardware.

[pschatzmann]

https://www.w3schools.com/cpp/cpp_memory_management_new.asp

[hash6iron]

Not worked!
Well thanks very much for your help.