esp32-S2 usb cdc works only after serial monitor is opened #10474

Sonic803 · 2024-10-16T23:25:28Z

Board

Wemos S2 mini

Device Description

Just the board connected with usbc connected to pc

Hardware Configuration

Nothing

Version

latest development Release Candidate (RC-X)

IDE Name

Arduino ide v2

Operating System

Arch Linux

Flash frequency

Lolin s2 default

PSRAM enabled

yes

Upload speed

Lolin s2 default

Description

I'm using the Lolin s2 mini board in arduino ide, with usb cdc enabled .
After uploading this program while in dfu mode, If i try to re-upload it in cdc mode it fails with an error.

While if I first open the serial monitor and wait for it to receive some messages, and then try to upload it works.

Sketch

void setup() {
  Serial.begin(9600);
}

void loop() {
  Serial.println("Hello");
  delay(50);
}

Debug Message

FQBN: esp32:esp32:lolin_s2_mini:DebugLevel=verbose
Using board 'lolin_s2_mini' from platform in folder: /home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1
Using core 'esp32' from platform in folder: /home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1

/usr/bin/env bash -c "[ ! -f \"/home/sonic/Desktop/music/arduino/adc_test\"/partitions.csv ] || cp -f \"/home/sonic/Desktop/music/arduino/adc_test\"/partitions.csv \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/partitions.csv"
/usr/bin/env bash -c "[ -f \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/partitions.csv ] || [ ! -f \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/variants/lolin_s2_mini\"/partitions.csv ] || cp \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/variants/lolin_s2_mini\"/partitions.csv \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/partitions.csv"
/usr/bin/env bash -c "[ -f \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/partitions.csv ] || cp \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1\"/tools/partitions/default.csv \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/partitions.csv"
/usr/bin/env bash -c "[ -f \"/home/sonic/Desktop/music/arduino/adc_test\"/bootloader.bin ] && cp -f \"/home/sonic/Desktop/music/arduino/adc_test\"/bootloader.bin \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/adc_test.ino.bootloader.bin || ( [ -f \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/variants/lolin_s2_mini\"/bootloader.bin ] && cp \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/variants/lolin_s2_mini\"/bootloader.bin \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/adc_test.ino.bootloader.bin || python3 \"/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6\"/esptool.py --chip esp32s2 elf2image --flash_mode dio --flash_freq 80m --flash_size 4MB -o \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/adc_test.ino.bootloader.bin \"/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2\"/bin/bootloader_qio_80m.elf )"
esptool.py v4.6
Creating esp32s2 image...
Merged 2 ELF sections
Successfully created esp32s2 image.
/usr/bin/env bash -c "[ ! -f \"/home/sonic/Desktop/music/arduino/adc_test\"/build_opt.h ] || cp -f \"/home/sonic/Desktop/music/arduino/adc_test\"/build_opt.h \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/build_opt.h"
/usr/bin/env bash -c "[ -f \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/build_opt.h ] || : > \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/build_opt.h"
/usr/bin/env bash -c ": > '/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/file_opts'"
Detecting libraries used...
/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2405/bin/xtensa-esp32s2-elf-g++ -c @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/cpp_flags -w -Os -Werror=return-type -w -x c++ -E -CC -DF_CPU=240000000L -DARDUINO=10607 -DARDUINO_LOLIN_S2_MINI -DARDUINO_ARCH_ESP32 -DARDUINO_BOARD="LOLIN_S2_MINI" -DARDUINO_VARIANT="lolin_s2_mini" -DARDUINO_PARTITION_default -DARDUINO_HOST_OS="linux" -DARDUINO_FQBN="esp32:esp32:lolin_s2_mini:CDCOnBoot=default,MSCOnBoot=default,DFUOnBoot=default,PartitionScheme=default,DebugLevel=verbose,EraseFlash=none" -DESP32 -DCORE_DEBUG_LEVEL=5 -DBOARD_HAS_PSRAM -DARDUINO_USB_MODE=0 -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=0 @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/defines -I/home/sonic/Desktop/music/arduino/adc_test -iprefix /home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/include/ @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/includes -I/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/qio_qspi/include -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/cores/esp32 -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/variants/lolin_s2_mini @/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/build_opt.h @/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/file_opts /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/sketch/adc_test.ino.cpp -o /dev/null
Generating function prototypes...
/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2405/bin/xtensa-esp32s2-elf-g++ -c @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/cpp_flags -w -Os -Werror=return-type -w -x c++ -E -CC -DF_CPU=240000000L -DARDUINO=10607 -DARDUINO_LOLIN_S2_MINI -DARDUINO_ARCH_ESP32 -DARDUINO_BOARD="LOLIN_S2_MINI" -DARDUINO_VARIANT="lolin_s2_mini" -DARDUINO_PARTITION_default -DARDUINO_HOST_OS="linux" -DARDUINO_FQBN="esp32:esp32:lolin_s2_mini:CDCOnBoot=default,MSCOnBoot=default,DFUOnBoot=default,PartitionScheme=default,DebugLevel=verbose,EraseFlash=none" -DESP32 -DCORE_DEBUG_LEVEL=5 -DBOARD_HAS_PSRAM -DARDUINO_USB_MODE=0 -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=0 @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/defines -I/home/sonic/Desktop/music/arduino/adc_test -iprefix /home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/include/ @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/includes -I/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/qio_qspi/include -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/cores/esp32 -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/variants/lolin_s2_mini @/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/build_opt.h @/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/file_opts /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/sketch/adc_test.ino.cpp -o /tmp/171925280/sketch_merged.cpp
/home/sonic/.arduino15/packages/builtin/tools/ctags/5.8-arduino11/ctags -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives /tmp/171925280/sketch_merged.cpp
Compiling sketch...
/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2405/bin/xtensa-esp32s2-elf-g++ -MMD -c @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/cpp_flags -w -Os -Werror=return-type -DF_CPU=240000000L -DARDUINO=10607 -DARDUINO_LOLIN_S2_MINI -DARDUINO_ARCH_ESP32 "-DARDUINO_BOARD=\"LOLIN_S2_MINI\"" "-DARDUINO_VARIANT=\"lolin_s2_mini\"" -DARDUINO_PARTITION_default "-DARDUINO_HOST_OS=\"linux\"" "-DARDUINO_FQBN=\"esp32:esp32:lolin_s2_mini:CDCOnBoot=default,MSCOnBoot=default,DFUOnBoot=default,PartitionScheme=default,DebugLevel=verbose,EraseFlash=none\"" -DESP32 -DCORE_DEBUG_LEVEL=5 -DBOARD_HAS_PSRAM -DARDUINO_USB_MODE=0 -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=0 @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/defines -I/home/sonic/Desktop/music/arduino/adc_test -iprefix /home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/include/ @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/includes -I/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/qio_qspi/include -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/cores/esp32 -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/variants/lolin_s2_mini @/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/build_opt.h @/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/file_opts /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/sketch/adc_test.ino.cpp -o /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/sketch/adc_test.ino.cpp.o
Compiling libraries...
Compiling core...
/usr/bin/env bash -c "echo -DARDUINO_CORE_BUILD > '/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/file_opts'"
Using precompiled core: /tmp/arduino/cores/49a407282d126346c3fd8cbac7e5ae80/core.a
/usr/bin/env bash -c ": > '/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/file_opts'"
Linking everything together...
/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2405/bin/xtensa-esp32s2-elf-g++ @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/ld_flags @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/ld_scripts -Wl,--Map=/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.map -L/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/lib -L/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/ld -L/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/qio_qspi -Wl,--wrap=esp_panic_handler -Wl,--start-group /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/sketch/adc_test.ino.cpp.o /tmp/arduino/cores/49a407282d126346c3fd8cbac7e5ae80/core.a @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2/flags/ld_libs -Wl,--end-group -Wl,-EL -o /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.elf
python3 /home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool.py --chip esp32s2 elf2image --flash_mode dio --flash_freq 80m --flash_size 4MB --elf-sha256-offset 0xb0 -o /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.bin /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.elf
esptool.py v4.6
Creating esp32s2 image...
Merged 2 ELF sections
Successfully created esp32s2 image.
python3 /home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/tools/gen_esp32part.py -q /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/partitions.csv /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.partitions.bin
/usr/bin/env bash -c "[ ! -d \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/libraries/Insights ] || python3 \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1\"/tools/gen_insights_package.py /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5 adc_test.ino \"/home/sonic/Desktop/music/arduino/adc_test\""
/usr/bin/env bash -c "[ ! -d \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/libraries/ESP_SR ] || [ ! -f \"/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2\"/esp_sr/srmodels.bin ] || cp -f \"/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-466a392a/esp32s2\"/esp_sr/srmodels.bin \"/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5\"/srmodels.bin"
python3 /home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool.py --chip esp32s2 merge_bin -o /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.merged.bin --fill-flash-size 4MB --flash_mode keep --flash_freq keep --flash_size keep 0x1000 /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.bootloader.bin 0x8000 /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.partitions.bin 0xe000 /home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/tools/partitions/boot_app0.bin 0x10000 /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.bin
esptool.py v4.6
Wrote 0x400000 bytes to file /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.merged.bin, ready to flash to offset 0x0

/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2405/bin/xtensa-esp32s2-elf-size -A /tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.elf
Sketch uses 300483 bytes (22%) of program storage space. Maximum is 1310720 bytes.
Global variables use 27224 bytes (8%) of dynamic memory, leaving 300456 bytes for local variables. Maximum is 327680 bytes.
Performing 1200-bps touch reset on serial port /dev/ttyACM3
Waiting for upload port...
No upload port found, using /dev/ttyACM3 as fallback
python3 "/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool.py" --chip esp32s2 --port "/dev/ttyACM3" --baud 921600  --before default_reset --after hard_reset write_flash  -z --flash_mode keep --flash_freq keep --flash_size keep 0x1000 "/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.bootloader.bin" 0x8000 "/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.partitions.bin" 0xe000 "/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.1.0-RC1/tools/partitions/boot_app0.bin" 0x10000 "/tmp/arduino/sketches/5047A9EEBC05BDA2B2491CADD4ACBBF5/adc_test.ino.bin" 
esptool.py v4.6
Serial port /dev/ttyACM3
Connecting...Traceback (most recent call last):
  File "/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool.py", line 37, in <module>

    esptool._main()
  File "/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool/__init__.py", line 1064, in _main
    main()
  File "/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool/__init__.py", line 678, in main
    esp = esp or get_default_connected_device(
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool/__init__.py", line 953, in get_default_connected_device
    _esp.connect(before, connect_attempts)
  File "/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool/loader.py", line 642, in connect
    last_error = self._connect_attempt(reset_strategy, mode)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool/loader.py", line 527, in _connect_attempt
    reset_strategy()  # Reset the chip to bootloader (download mode)
    ^^^^^^^^^^^^^^^^
  File "/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool/reset.py", line 83, in __call__
    self._setDTRandRTS(False, False)
  File "/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.6/esptool/reset.py", line 58, in _setDTRandRTS
    fcntl.ioctl(self.port.fileno(), TIOCMSET, struct.pack("I", status))
OSError: [Errno 71] Protocol error

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.

The text was updated successfully, but these errors were encountered:

VojtechBartoska · 2024-10-21T10:15:32Z

@SuGlider Please help with triage, thanks

SuGlider · 2024-10-30T09:57:49Z

I'm not sure how to test the issue.

I can help by describing how the S2 USB is supposed to work:

S2 USB port only works using the TinyUSB stack. It is enabled in Arduino when "IDE Menu->Tools->USB CDC On Boot:" is "Enabled".
DFU Mode can also be activated by using the IDE Menu, but, again, DFU support is also part of TinyUSB.
Once "USB CDC On Boot" is enabled and a new sketch is downloaded and executed, the port will show up in the OS. It can be used to download a new sketch that keeps "USB CDC On Boot" also enabled.
Lolin S2 Mini board has only the USB port available. In that case when the firmware that the S2 Mini already has not been set with "USB CDC On Boot: Enabled", it is necessary to put the S2 into download mode. This is achieved by holding the BOOT button pressed and pulsing the EN/RESET button once. When this is done, a USB port will be enumerated in the OS and it can be used to download a new firmware.

Please describe the steps you have followed when you see the issue. I can replicate them here and check what is going on.
Thanks.

SuGlider · 2024-10-30T10:11:33Z

Not sure if this is the issue, but the USB CDC port only shows up (is enumerated by the OS) when CDC is enabled and DFU is disabled. If this is the case, in order to download a new firmware into the S2 Mini, it is necessary to put it into download mode, by holding BOOT and pulsing EN/RESET.

SuGlider · 2024-10-30T16:41:46Z

Yes, indeed something has changed from 3.0.7 to 3.1.0-RC1.
S2 could have both CDC and DFU enabled and CDC would work fine in 3.0.7.
With 3.1.0-RC1 and RC2 when CDC and DFU are enabled, CDC doesn't work and the host doesn't enumerate the USB port.

@me-no-dev -- would you know about any change that would result in blocking CDC when DFU is enabled?

Sonic803 · 2024-10-30T18:29:19Z

These are the setting that I am using, even the Lolin s2 mini settings don't work.

Using the 3.0.7 version doesn't solve the issue.

I'm using the Lolin s2 mini board in arduino ide, with usb cdc enabled . After uploading this program while in dfu mode, If i try to re-upload it in cdc mode it fails with an error.

When I said this I meant that the first time I upload the firmware while in download mode (GPIO0 low while toggling reset).

What I actually do to replicate this issue:

Set Board Settings as listed above
Connect the board in download mode
Upload the sketch (it works)
Reset
If now I try to upload the sketch another time it won't work
If I try to upload it with the serial monitor running and printing messages it works.

me-no-dev · 2024-10-31T08:58:16Z

@SuGlider 3.0.7 and RC2 should have the exact same TinyUSB setup

SaintSampo · 2024-12-02T04:22:31Z

I have this this same problem.

Using core 2.0.17, with CDC on boot enabled, I put the ESP32 in boot mode, upload a simple blink sketch, and then power cycle the device. I can then upload as much as I want over USB in this case.

When I update to 3.0.7, and try to upload with the same process, after I power cycle the device upload fails every time.

Jason2866 · 2025-03-13T11:21:16Z

please try with actual Arduino core 3.1.3 and 3.2.0-rc2.

Sonic803 · 2025-03-14T16:14:17Z

I tried with both 3.1.3 and 3.2.0-rc2.
In both cases upload only works if the serial monitor is open.
This is the error i get on 3.2.0-rc2 when uploading without the serial monitor open. (The same error is present in 3.1.3)


FQBN: esp32:esp32:esp32s2:CDCOnBoot=cdc,UploadMode=cdc
Using board 'esp32s2' from platform in folder: /home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2
Using core 'esp32' from platform in folder: /home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2

/usr/bin/env bash -c "[ ! -f \"/home/sonic/Arduino/sketch_test_esp32s2\"/partitions.csv ] || cp -f \"/home/sonic/Arduino/sketch_test_esp32s2\"/partitions.csv \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/partitions.csv"
/usr/bin/env bash -c "[ -f \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/partitions.csv ] || [ ! -f \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/variants/esp32s2\"/partitions.csv ] || cp \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/variants/esp32s2\"/partitions.csv \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/partitions.csv"
/usr/bin/env bash -c "[ -f \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/partitions.csv ] || cp \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2\"/tools/partitions/default.csv \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/partitions.csv"
/usr/bin/env bash -c "[ -f \"/home/sonic/Arduino/sketch_test_esp32s2\"/bootloader.bin ] && cp -f \"/home/sonic/Arduino/sketch_test_esp32s2\"/bootloader.bin \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/sketch_test_esp32s2.ino.bootloader.bin || ( [ -f \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/variants/esp32s2\"/bootloader.bin ] && cp \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/variants/esp32s2\"/bootloader.bin \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/sketch_test_esp32s2.ino.bootloader.bin || \"/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.9.dev3\"/esptool --chip esp32s2 elf2image --flash_mode dio --flash_freq 80m --flash_size 4MB -o \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/sketch_test_esp32s2.ino.bootloader.bin \"/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2\"/bin/bootloader_qio_80m.elf )"
esptool.py v4.8.1
Creating esp32s2 image...
Merged 2 ELF sections
Successfully created esp32s2 image.
/usr/bin/env bash -c "[ ! -f \"/home/sonic/Arduino/sketch_test_esp32s2\"/build_opt.h ] || cp -f \"/home/sonic/Arduino/sketch_test_esp32s2\"/build_opt.h \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/build_opt.h"
/usr/bin/env bash -c "[ -f \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/build_opt.h ] || : > \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/build_opt.h"
/usr/bin/env bash -c ": > '/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/file_opts'"
/usr/bin/env bash -c "cp -f \"/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2\"/sdkconfig \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/sdkconfig"
Detecting libraries used...
/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2411/bin/xtensa-esp32s2-elf-g++ -c @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/cpp_flags -w -Os -Werror=return-type -w -x c++ -E -CC -DF_CPU=240000000L -DARDUINO=10607 -DARDUINO_ESP32S2_DEV -DARDUINO_ARCH_ESP32 -DARDUINO_BOARD="ESP32S2_DEV" -DARDUINO_VARIANT="esp32s2" -DARDUINO_PARTITION_default -DARDUINO_HOST_OS="linux" -DARDUINO_FQBN="esp32:esp32:esp32s2:UploadSpeed=921600,CDCOnBoot=cdc,MSCOnBoot=default,DFUOnBoot=default,UploadMode=cdc,CPUFreq=240,FlashFreq=80,FlashMode=qio,FlashSize=4M,PartitionScheme=default,DebugLevel=none,PSRAM=disabled,EraseFlash=none,JTAGAdapter=default,ZigbeeMode=default" -DESP32=ESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_USB_MODE=0 -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=0 @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/defines -I/home/sonic/Arduino/sketch_test_esp32s2 -iprefix /home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/include/ @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/includes -I/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/qio_qspi/include -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/cores/esp32 -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/variants/esp32s2 @/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/build_opt.h @/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/file_opts /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch/sketch_test_esp32s2.ino.cpp -o /dev/null
Generating function prototypes...
/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2411/bin/xtensa-esp32s2-elf-g++ -c @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/cpp_flags -w -Os -Werror=return-type -w -x c++ -E -CC -DF_CPU=240000000L -DARDUINO=10607 -DARDUINO_ESP32S2_DEV -DARDUINO_ARCH_ESP32 -DARDUINO_BOARD="ESP32S2_DEV" -DARDUINO_VARIANT="esp32s2" -DARDUINO_PARTITION_default -DARDUINO_HOST_OS="linux" -DARDUINO_FQBN="esp32:esp32:esp32s2:UploadSpeed=921600,CDCOnBoot=cdc,MSCOnBoot=default,DFUOnBoot=default,UploadMode=cdc,CPUFreq=240,FlashFreq=80,FlashMode=qio,FlashSize=4M,PartitionScheme=default,DebugLevel=none,PSRAM=disabled,EraseFlash=none,JTAGAdapter=default,ZigbeeMode=default" -DESP32=ESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_USB_MODE=0 -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=0 @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/defines -I/home/sonic/Arduino/sketch_test_esp32s2 -iprefix /home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/include/ @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/includes -I/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/qio_qspi/include -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/cores/esp32 -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/variants/esp32s2 @/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/build_opt.h @/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/file_opts /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch/sketch_test_esp32s2.ino.cpp -o /tmp/885509286/sketch_merged.cpp
/home/sonic/.arduino15/packages/builtin/tools/ctags/5.8-arduino11/ctags -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives /tmp/885509286/sketch_merged.cpp
Compiling sketch...
/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2411/bin/xtensa-esp32s2-elf-g++ -MMD -c @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/cpp_flags -w -Os -Werror=return-type -DF_CPU=240000000L -DARDUINO=10607 -DARDUINO_ESP32S2_DEV -DARDUINO_ARCH_ESP32 "-DARDUINO_BOARD=\"ESP32S2_DEV\"" "-DARDUINO_VARIANT=\"esp32s2\"" -DARDUINO_PARTITION_default "-DARDUINO_HOST_OS=\"linux\"" "-DARDUINO_FQBN=\"esp32:esp32:esp32s2:UploadSpeed=921600,CDCOnBoot=cdc,MSCOnBoot=default,DFUOnBoot=default,UploadMode=cdc,CPUFreq=240,FlashFreq=80,FlashMode=qio,FlashSize=4M,PartitionScheme=default,DebugLevel=none,PSRAM=disabled,EraseFlash=none,JTAGAdapter=default,ZigbeeMode=default\"" -DESP32=ESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_USB_MODE=0 -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=0 @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/defines -I/home/sonic/Arduino/sketch_test_esp32s2 -iprefix /home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/include/ @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/includes -I/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/qio_qspi/include -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/cores/esp32 -I/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/variants/esp32s2 @/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/build_opt.h @/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/file_opts /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch/sketch_test_esp32s2.ino.cpp -o /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch/sketch_test_esp32s2.ino.cpp.o
Compiling libraries...
Compiling core...
/usr/bin/env bash -c "echo -DARDUINO_CORE_BUILD > '/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/file_opts'"
Using precompiled core: /home/sonic/.cache/arduino/cores/65355e0664254971d9fdbcf772ca26a6/core.a
/usr/bin/env bash -c ": > '/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/file_opts'"
Linking everything together...
/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2411/bin/xtensa-esp32s2-elf-g++ -Wl,--Map=/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.map -L/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/lib -L/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/ld -L/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/qio_qspi -Wl,--wrap=esp_panic_handler @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/ld_flags @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/ld_scripts -Wl,--start-group /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch/sketch_test_esp32s2.ino.cpp.o /home/sonic/.cache/arduino/cores/65355e0664254971d9fdbcf772ca26a6/core.a @/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2/flags/ld_libs -Wl,--end-group -Wl,-EL -o /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.elf
/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.9.dev3/esptool --chip esp32s2 elf2image --flash_mode dio --flash_freq 80m --flash_size 4MB --elf-sha256-offset 0xb0 -o /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.bin /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.elf
esptool.py v4.8.1
Creating esp32s2 image...
Merged 2 ELF sections
Successfully created esp32s2 image.
python3 /home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/tools/gen_esp32part.py -q /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/partitions.csv /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.partitions.bin
/usr/bin/env bash -c "[ ! -d \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/libraries/Insights ] || python3 \"/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2\"/tools/gen_insights_package.py /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048 sketch_test_esp32s2.ino \"/home/sonic/Arduino/sketch_test_esp32s2\""
/usr/bin/env bash -c "[ ! -d \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/libraries/ESP_SR ] || [ ! -f \"/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2\"/esp_sr/srmodels.bin ] || cp -f \"/home/sonic/.arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.4-d4aa25a3-v1/esp32s2\"/esp_sr/srmodels.bin \"/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048\"/srmodels.bin"
/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.9.dev3/esptool --chip esp32s2 merge_bin -o /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.merged.bin --fill-flash-size 4MB --flash_mode keep --flash_freq keep --flash_size keep 0x1000 /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.bootloader.bin 0x8000 /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.partitions.bin 0xe000 /home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/tools/partitions/boot_app0.bin 0x10000 /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.bin
esptool.py v4.8.1
Wrote 0x400000 bytes to file /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.merged.bin, ready to flash to offset 0x0

/home/sonic/.arduino15/packages/esp32/tools/esp-x32/2411/bin/xtensa-esp32s2-elf-size -A /home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.elf
Sketch uses 292689 bytes (22%) of program storage space. Maximum is 1310720 bytes.
Global variables use 34592 bytes (10%) of dynamic memory, leaving 293088 bytes for local variables. Maximum is 327680 bytes.
Performing 1200-bps touch reset on serial port /dev/ttyACM1
Waiting for upload port...
No upload port found, using /dev/ttyACM1 as fallback
"/home/sonic/.arduino15/packages/esp32/tools/esptool_py/4.9.dev3/esptool" --chip esp32s2 --port "/dev/ttyACM1" --baud 921600  --before default_reset --after hard_reset write_flash  -z --flash_mode keep --flash_freq keep --flash_size keep 0x1000 "/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.bootloader.bin" 0x8000 "/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.partitions.bin" 0xe000 "/home/sonic/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC2/tools/partitions/boot_app0.bin" 0x10000 "/home/sonic/.cache/arduino/sketches/A2611C80EA7FB7D0C0CA08C377F61048/sketch_test_esp32s2.ino.bin" 
esptool.py v4.8.1
Serial port /dev/ttyACM1
Connecting...Traceback (most recent call last):
  File "esptool.py", line 37, in <module>
  File "esptool/__init__.py", line 1325, in _main
  File "esptool/__init__.py", line 809, in main
  File "esptool/__init__.py", line 1210, in get_default_connected_device
  File "esptool/loader.py", line 726, in connect
  File "esptool/loader.py", line 602, in _connect_attempt
  File "esptool/reset.py", line 47, in __call__
  File "esptool/reset.py", line 114, in reset
  File "esptool/reset.py", line 89, in _setDTRandRTS
BrokenPipeError: [Errno 32] Broken pipe
[233409] Failed to execute script 'esptool' due to unhandled exception!

Failed uploading: uploading error: exit status 1

SuGlider · 2025-03-14T18:40:47Z

It may be a problem related to esptool.py rights to open the /dev/ttyACM1 within Linux Arch.
Could you please execute ls -l /dev/ttyACM1 and check if the file has o+rw?
The Wemos S2 mini shall be connected using USB OTG port, which is the default USB port.

A work around for the Wemos S2 mini is to hold 0 Button and then pulse the RST button to force the board to enter into Boot Load mode.

SuGlider · 2025-03-14T18:58:29Z

Is there a /dev/ttyUSB0 port available?

ls -l /dev/tty[AU]*

Sonic803 · 2025-03-14T20:58:54Z

No, there is no /dev/ttyUSB0, only ACM.
The permissions should be right.
crw-rw-rw- 1 root uucp 166, 1 Mar 14 21:38 /dev/ttyACM1
I know that on Wemos S2 mini you can go in boot load mode, but it takes a lot of time to do it every time you upload.
Using esp-idf I don't have this issue, i can do idf.py flash and it works every time.

Running
esptool.py --port /dev/ttyACM1 chip_id
After flashing the board with esp-idf returns:

esptool.py v4.8.1
Serial port /dev/ttyACM1
Connecting........
Detecting chip type... Unsupported detection protocol, switching and trying again...
Detecting chip type... ESP32-S2
Chip is ESP32-S2FNR2 (revision v1.0)
Features: WiFi, Embedded Flash 4MB, Embedded PSRAM 2MB, ADC and temperature sensor calibration in BLK2 of efuse V2
Crystal is 40MHz
MAC: cc:8d:a2:88:b5:f8
Uploading stub...
Running stub...
Stub running...
Warning: ESP32-S2 has no Chip ID. Reading MAC instead.
MAC: cc:8d:a2:88:b5:f8
Hard resetting via RTS pin...

While after uploading the simple sketch from arduino ide:

esptool.py v4.8.1
Serial port /dev/ttyACM1
Connecting...
Traceback (most recent call last):
  File "/home/sonic/.virtualenvs/espenv/bin/esptool.py", line 37, in <module>
    esptool._main()
  File "/home/sonic/.virtualenvs/espenv/lib/python3.12/site-packages/esptool/__init__.py", line 1314, in _main
    main()
  File "/home/sonic/.virtualenvs/espenv/lib/python3.12/site-packages/esptool/__init__.py", line 803, in main
    esp = esp or get_default_connected_device(
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/sonic/.virtualenvs/espenv/lib/python3.12/site-packages/esptool/__init__.py", line 1193, in get_default_connected_device
    _esp = detect_chip(
           ^^^^^^^^^^^^
  File "/home/sonic/.virtualenvs/espenv/lib/python3.12/site-packages/esptool/cmds.py", line 99, in detect_chip
    detect_port.connect(connect_mode, connect_attempts, detecting=True)
  File "/home/sonic/.virtualenvs/espenv/lib/python3.12/site-packages/esptool/loader.py", line 730, in connect
    last_error = self._connect_attempt(reset_strategy, mode)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/sonic/.virtualenvs/espenv/lib/python3.12/site-packages/esptool/loader.py", line 606, in _connect_attempt
    reset_strategy()  # Reset the chip to bootloader (download mode)
    ^^^^^^^^^^^^^^^^
  File "/home/sonic/.virtualenvs/espenv/lib/python3.12/site-packages/esptool/reset.py", line 47, in __call__
    self.reset()
  File "/home/sonic/.virtualenvs/espenv/lib/python3.12/site-packages/esptool/reset.py", line 114, in reset
    self._setDTRandRTS(False, False)
  File "/home/sonic/.virtualenvs/espenv/lib/python3.12/site-packages/esptool/reset.py", line 89, in _setDTRandRTS
    fcntl.ioctl(self.port.fileno(), TIOCMSET, struct.pack("I", status))
BrokenPipeError: [Errno 32] Broken pipe

So I guess the issue is within the image flashed by arduino-esp

SuGlider · 2025-03-16T15:24:29Z

Thanks for the detailed report. What is the esptool.py version that your Linux/IDF uses when it works fine? What is the Python version?

I see that Arduino runs some Virtual Env Python version. Would it be the same as in IDF?
.virtualenvs/espenv/bin/esptool.py
.virtualenvs/espenv/lib/python3.12

It may be necessary to update the tools in .virtualenvs/espenv/

Sonic803 · 2025-03-16T18:02:16Z

My virtualenv (espenv) uses Python 3.12.4 and esptool 4.8.1, arduino uses the same version of esptool

Sonic803 added the Status: Awaiting triage Issue is waiting for triage label Oct 16, 2024

VojtechBartoska assigned SuGlider Oct 21, 2024

VojtechBartoska added this to the 3.1.0 milestone Nov 4, 2024

VojtechBartoska added the Status: Needs investigation We need to do some research before taking next steps on this issue label Nov 4, 2024

rftafas modified the milestones: 3.1.0, 3.1.1 Jan 6, 2025

rftafas modified the milestones: 3.1.1, 3.2.0 Jan 14, 2025

Jason2866 added Status: Awaiting Response awaiting a response from the author and removed Status: Awaiting triage Issue is waiting for triage Status: Needs investigation We need to do some research before taking next steps on this issue labels Mar 13, 2025

Jason2866 added Peripheral: UART Area: Tools & Build System Issue is related to tools and/or the build system and removed Status: Awaiting Response awaiting a response from the author labels Mar 14, 2025

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esp32-S2 usb cdc works only after serial monitor is opened #10474

esp32-S2 usb cdc works only after serial monitor is opened #10474

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esp32-S2 usb cdc works only after serial monitor is opened #10474

esp32-S2 usb cdc works only after serial monitor is opened #10474

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Sonic803 commented Oct 16, 2024

Board

Device Description

Hardware Configuration

Version

IDE Name

Operating System

Flash frequency

PSRAM enabled

Upload speed

Description

Sketch

Debug Message

Other Steps to Reproduce

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

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