ESP32-S3 with SPIRAM

[victorallume]

I have a ESP32-S3-DevKitC-1-N8R8 which has 8MB SPI-flash and 8MB SPIRAM. If I try to use the stock image at https://micropython.org/download/GENERIC_S3_SPIRAM/ or compile my own, I get the following looping on the serial line:

ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0xc (RTC_SW_CPU_RST),boot:0xb (SPI_FAST_FLASH_BOOT)
Saved PC:0x420fc8c2
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0xf24
load:0x403c9700,len:0xc44
load:0x403cc700,len:0x2d74
entry 0x403c98f4
E (249) psram: PSRAM ID read error: 0x00ffffff
E (250) spiram: SPI RAM enabled but initialization failed. Bailing out.
E (10) spiram: SPI RAM not initialized

abort() was called at PC 0x420068ec on core 1


Backtrace:0x40375c1e:0x3fce4b900x403823b1:0x3fce4bb0 0x403887e2:0x3fce4bd0 0x420068ec:0x3fce4c40 0x420070fe:0x3fce4c60 




ELF file SHA256: 78dd52c8e96dbef0

Rebooting...

Over at the forums, this post says the generic binaries don't support octa-SPI RAM as this device uses. I've tried adding this to the boards sdkconfig.board:

CONFIG_SPIRAM_MODE_QUAD=n
CONFIG_SPIRAM_MODE_OCT=y

But then get the following errors:

ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0xc (RTC_SW_CPU_RST),boot:0xb (SPI_FAST_FLASH_BOOT)
Saved PC:0x420dd77e
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0xf24
load:0x403c9700,len:0xc44
load:0x403cc700,len:0x2d74
entry 0x403c98f4
Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x4201dff8  PS      : 0x00060630  A0      : 0x820206cf  A1      : 0x3fce4bb0
A2      : 0x3d82f1f0  A3      : 0x00000010  A4      : 0x3c0fe067  A5      : 0x00000007
A6      : 0x00000016  A7      : 0x0000002f  A8      : 0x8201dff8  A9      : 0x3fce4b90
A10     : 0xaeaabaaa  A11     : 0x3fce4c04  A12     : 0x00000000  A13     : 0x3c0f11c0
A14     : 0x00ff0000  A15     : 0x3c0f11c0  SAR     : 0x00000006  EXCCAUSE: 0x0000001c
EXCVADDR: 0xaeaababb  LBEG    : 0x400556d5  LEND    : 0x400556e5  LCOUNT  : 0xfffffffc


Backtrace:0x4201dff5:0x3fce4bb00x420206cc:0x3fce4c40 0x420068d5:0x3fce4c60




ELF file SHA256: 3438bf747332cfdf

Any ideas on how to get this working?

[victorallume]

I've also tried removing sdkconfig.usb and it's reference from mpconfigboard.cmake as per https://www.youtube.com/watch?v=BC5uj4dqDG8
This got a bit further, and can now eventually get a micropython prompt after a few loops of the errors above, but then getting random errors like above when running things (e.g. gc.mem_free())

[puppet13th]

@victorallume i think you can use this with some modification

i just finished compiled latest git using idf 4.4.2 the board is lolin s3 though

MPY: soft reboot
MicroPython v1.19.1-528-gb8982ec5f on 2022-10-09; LOLIN S3 with ESP32S3
Type "help()" for more information.
>>> gc.mem_free()
8191248

[Red-M]

I fixed this in #8689 but its not merged yet.