ESP32-S3 ROM Bootloader Crash

levipope
Posts: 2
Joined: Thu Aug 31, 2023 10:09 pm

ESP32-S3 ROM Bootloader Crash

Postby levipope » Thu Aug 31, 2023 10:32 pm

I am trying to get my OTG app (TinyUSB) to reboot into SERIAL/JTAG bootload mode on my ESP32-S3. I am using the 5.0 branch of IDF.

So far I have been able to get it to reliably reboot into bootload but as soon as the ROM bootloader starts I get this "Core 0 panic'ed" error. Any ideas as to what is causing this? Is there something special I need to do to reset the USB peripheral back to Serial/JTAG mode before I reboot?

Thanks for the help.

Code: Select all

ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x3 (RTC_SW_SYS_RST),boot:0x2 (DOWNLOAD(USB/UART0))
Saved PC:0x40375ba9
waiting for download
Guru Meditation Error: Core 0 panic'ed (LoadProhibited)
Core 0 register dump:
PC      : 0x400511b1  PS      : 0x00060330  A0      : 0x80049188  A1      : 0x3fceb640
A2      : 0x00000000  A3      : 0x3ff1e3fb  A4      : 0x00000001  A5      : 0x00000000
A6      : 0x00000000  A7      : 0x00000088  A8      : 0x800533dc  A9      : 0x3fceb620
A10     : 0xfffffffb  A11     : 0x3fceeebc  A12     : 0x3fceefbc  A13     : 0x00000000
A14     : 0x00000000  A15     : 0x00000006  SAR     : 0x0000000f  EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000000  LBEG    : 0x400570e8  LEND    : 0x400570f3  LCOUNT  : 0x00000000
Backtrace: 0x400511b1:0x3fceb640 0x40049185:0x3fceb670 0x400491e5:0x3fceb690 0x40043917:0
x3fceb6b0 0x4004392a:0x3fceb6d0 0x40043c33:0x3fceb6f0 0x40034c45:0x3fceb710

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