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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
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Area: Tools & Build SystemIssue is related to tools and/or the build systemIssue is related to tools and/or the build systemPeripheral: UART
Milestone
 
3.2.0
@Sonic803

Description

@Sonic803
Sonic803
opened on Oct 16, 2024
Issue body actions

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

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

  • I confirm I have checked existing issues, online documentation and Troubleshooting guide.

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Area: Tools & Build SystemIssue is related to tools and/or the build systemIssue is related to tools and/or the build systemPeripheral: UART

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