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esp32s3 large modules/packages boot error #5876
Description
It seems like calls to complex functions like
http.ListenAndServe(port, nil)can cause a booting error, even though tinygo flashes the board without problems:
sudo tinygo flash -target=esp32s3-generic -opt=z -panic=print .
Connecting to /dev/ttyACM0...
Connected.
Detected chip: ESP32-S3
USB-JTAG/Serial interface detected, disabling watchdogs
Loading stub loader...
Stub running.
Erasing flash...
[##################################################] 100.0%
Flash erased.
Attaching SPI flash...
Configuring flash size...
Auto-detected flash size: 16MB
Flash params set to 0x024F
SHA digest in image updated
Attaching SPI flash...
Switching to 460800 baud...
Running at 460800 baud.
Compressed 1330096 bytes to 825068 (62%)
Flash begin: 825068 bytes at 0x00000000 (51 compressed blocks)
[##################################################] 100.0%
Flash complete. Verifying...
MD5 verified: 87707f5a4c36cad2f053504402c8abcf
Device reset.
yet, when watching the serial port we can see:
[20:07:55.605] tio 3.9
[20:07:55.605] Press ctrl-t q to quit
[20:07:55.605] Connected to /dev/ttyACM0
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x7 (TG0WDT_SYS_RST),boot:0x2b (SPI_FAST_FLASH_BOOT)
Saved PC:0x40043ac8
SPIWP:0xee
mode:DIO, clock div:1
load:0x3c000020,len:0x2fb20
load:0x3fc90ab0,len:0x8ffc
load:0x40389c00,len:0xb3ac
load:0x42043f00,len:0x100c88
Invalid image block, can't boot.
ets_main.c 329
and this endlessly repeats.
This seems to be relevant only to tinygo v0.43.0, as the previous version launches the same program without any problems.
For the context, i use the tinygo net/http stack, via netlink and netdev packages
Activity
rdon-key commentedon Oct 13, 2026
If the generated binary is larger than about 1 MB, #5567 might fix this.