[v4.2 branch] Auto-reset ESP32-S2 USB UART to bootloader times out on packet header or on changing mode

[ladyada]

Using windows 10 and Arduino 1.8.13 with ESP32-S2 WROVER, uploading 'blink sketch'

Uploading from ROM bootloader works great. Uploading from "user USB-serial" mode gets close to working!

Sometimes can switch mode and get into the bootloader and then times out later in the process

C:\Users\ladyada\Desktop\arduino-1.8.13\arduino-builder -dump-prefs -logger=machine -hardware C:\Users\ladyada\Desktop\arduino-1.8.13\hardware -hardware C:\Users\ladyada\AppData\Local\Arduino15\packages -hardware C:\Users\ladyada\Dropbox\ArduinoSketches\hardware -tools C:\Users\ladyada\Desktop\arduino-1.8.13\tools-builder -tools C:\Users\ladyada\Desktop\arduino-1.8.13\hardware\tools\avr -tools C:\Users\ladyada\AppData\Local\Arduino15\packages -built-in-libraries C:\Users\ladyada\Desktop\arduino-1.8.13\libraries -libraries C:\Users\ladyada\Dropbox\ArduinoSketches\libraries -fqbn=espressif:arduino-esp32:adafruit_metro_esp32s2:SerialMode=cdc,PSRAM=disabled,PartitionScheme=default,CPUFreq=240,FlashMode=qio,FlashFreq=80,FlashSize=4M,UploadSpeed=921600,DebugLevel=none -vid-pid=239A_80DF -ide-version=10813 -build-path C:\Users\ladyada\AppData\Local\Temp\arduino_build_163958 -warnings=none -build-cache C:\Users\ladyada\AppData\Local\Temp\arduino_cache_257336 -prefs=build.warn_data_percentage=75 -verbose C:\Users\ladyada\Dropbox\ArduinoSketches\BSP\MetroESP32S2\Blink\Blink.ino
C:\Users\ladyada\Desktop\arduino-1.8.13\arduino-builder -compile -logger=machine -hardware C:\Users\ladyada\Desktop\arduino-1.8.13\hardware -hardware C:\Users\ladyada\AppData\Local\Arduino15\packages -hardware C:\Users\ladyada\Dropbox\ArduinoSketches\hardware -tools C:\Users\ladyada\Desktop\arduino-1.8.13\tools-builder -tools C:\Users\ladyada\Desktop\arduino-1.8.13\hardware\tools\avr -tools C:\Users\ladyada\AppData\Local\Arduino15\packages -built-in-libraries C:\Users\ladyada\Desktop\arduino-1.8.13\libraries -libraries C:\Users\ladyada\Dropbox\ArduinoSketches\libraries -fqbn=espressif:arduino-esp32:adafruit_metro_esp32s2:SerialMode=cdc,PSRAM=disabled,PartitionScheme=default,CPUFreq=240,FlashMode=qio,FlashFreq=80,FlashSize=4M,UploadSpeed=921600,DebugLevel=none -vid-pid=239A_80DF -ide-version=10813 -build-path C:\Users\ladyada\AppData\Local\Temp\arduino_build_163958 -warnings=none -build-cache C:\Users\ladyada\AppData\Local\Temp\arduino_cache_257336 -prefs=build.warn_data_percentage=75 -verbose C:\Users\ladyada\Dropbox\ArduinoSketches\BSP\MetroESP32S2\Blink\Blink.ino
Using board 'adafruit_metro_esp32s2' from platform in folder: C:\Users\ladyada\Dropbox (Personal)\ArduinoSketches\hardware\espressif\arduino-esp32
Using core 'esp32' from platform in folder: C:\Users\ladyada\Dropbox (Personal)\ArduinoSketches\hardware\espressif\arduino-esp32
cmd /c if exist "C:\\Users\\ladyada\\Dropbox\\ArduinoSketches\\BSP\\MetroESP32S2\\Blink\\partitions.csv" COPY /y "C:\\Users\\ladyada\\Dropbox\\ArduinoSketches\\BSP\\MetroESP32S2\\Blink\\partitions.csv" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\partitions.csv"
cmd /c if not exist "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\partitions.csv" COPY "C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32\\tools\\partitions\\\\default.csv" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\partitions.csv"
Detecting libraries used...
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(Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/wifi_provisioning/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/face_detection/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/face_recognition/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/object_detection/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/image_util/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/pose_estimation/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/lib/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_littlefs/src" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_littlefs/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/fb_gfx/include" -mlongcalls -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -ggdb -O2 -fstack-protector -std=gnu++11 -fexceptions -fno-rtti -c -w -x c++ -E -CC -DF_CPU=240000000L -DARDUINO=10813 -DARDUINO_METRO_ESP32S2 -DARDUINO_ARCH_ARDUINO-ESP32 "-DARDUINO_BOARD=\"METRO_ESP32S2\"" "-DARDUINO_VARIANT=\"adafruit_metro_esp32s2\"" -DESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_SERIAL_PORT=1 "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32\\cores\\esp32" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32\\variants\\adafruit_metro_esp32s2" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\sketch\\Blink.ino.cpp" -o nul -DARDUINO_LIB_DISCOVERY_PHASE
Generating function prototypes...
"C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/xtensa-esp32s2-elf/bin/xtensa-esp32s2-elf-g++" -DHAVE_CONFIG_H "-DMBEDTLS_CONFIG_FILE=\"mbedtls/esp_config.h\"" -DUNITY_INCLUDE_CONFIG_H -DWITH_POSIX -D_GNU_SOURCE "-DIDF_VER=\"v4.3-dev-1561-g357a27760-dirty\"" -DESP_PLATFORM "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/config" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/newlib/platform_include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/freertos/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/freertos/xtensa/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/heap/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/log/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/include/apps" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/include/apps/sntp" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/lwip/src/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/port/esp32/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/port/esp32/include/arch" "-IC:\\Users\\ladyada\\Dropbox 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(Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/efuse/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/efuse/esp32s2/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/espcoredump/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_timer/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_ipc/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_pm/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/soc/soc/esp32s2/include" "-IC:\\Users\\ladyada\\Dropbox 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(Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_eth/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/tcpip_adapter/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/app_trace/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/mbedtls/port/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/mbedtls/mbedtls/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/mbedtls/esp_crt_bundle/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/bootloader_support/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/app_update/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/spi_flash/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/nvs_flash/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/pthread/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/wpa_supplicant/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/wpa_supplicant/port/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/wpa_supplicant/include/esp_supplicant" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/asio/asio/asio/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/asio/port/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/cbor/port/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/unity/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/unity/unity/src" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/unity/unity/extras/fixture/src" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/cmock/CMock/src" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/coap/port/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/coap/port/include/coap" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/coap/libcoap/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/coap/libcoap/include/coap2" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/console" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/nghttp/port/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/nghttp/nghttp2/lib/includes" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-tls" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_adc_cal/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_gdbstub/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_hid/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/tcp_transport/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_http_client/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_http_server/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_https_ota/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_https_server/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/protobuf-c/protobuf-c" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/protocomm/include/common" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/protocomm/include/security" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/protocomm/include/transports" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/mdns/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_local_ctrl/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/sdmmc/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_serial_slave_link/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_websocket_client/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/expat/expat/expat/lib" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/expat/port/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/wear_levelling/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/fatfs/diskio" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/fatfs/vfs" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/fatfs/src" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/freemodbus/common/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/idf_test/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/idf_test/include/esp32s2" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/jsmn/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/json/cJSON" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/libsodium/libsodium/src/libsodium/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/libsodium/port_include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/mqtt/esp-mqtt/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/openssl/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/perfmon/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/spiffs/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/freertos/include/freertos" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/tinyusb/tinyusb/src" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/tinyusb/additions/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/ulp/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/wifi_provisioning/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/face_detection/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/face_recognition/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/object_detection/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/image_util/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/pose_estimation/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/lib/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_littlefs/src" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_littlefs/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/fb_gfx/include" -mlongcalls -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -ggdb -O2 -fstack-protector -std=gnu++11 -fexceptions -fno-rtti -c -w -x c++ -E -CC -DF_CPU=240000000L -DARDUINO=10813 -DARDUINO_METRO_ESP32S2 -DARDUINO_ARCH_ARDUINO-ESP32 "-DARDUINO_BOARD=\"METRO_ESP32S2\"" "-DARDUINO_VARIANT=\"adafruit_metro_esp32s2\"" -DESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_SERIAL_PORT=1 "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32\\cores\\esp32" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32\\variants\\adafruit_metro_esp32s2" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\sketch\\Blink.ino.cpp" -o "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\preproc\\ctags_target_for_gcc_minus_e.cpp" -DARDUINO_LIB_DISCOVERY_PHASE
"C:\\Users\\ladyada\\Desktop\\arduino-1.8.13\\tools-builder\\ctags\\5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\preproc\\ctags_target_for_gcc_minus_e.cpp"
Compiling sketch...
"C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/xtensa-esp32s2-elf/bin/xtensa-esp32s2-elf-g++" -DHAVE_CONFIG_H "-DMBEDTLS_CONFIG_FILE=\"mbedtls/esp_config.h\"" -DUNITY_INCLUDE_CONFIG_H -DWITH_POSIX -D_GNU_SOURCE "-DIDF_VER=\"v4.3-dev-1561-g357a27760-dirty\"" -DESP_PLATFORM "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/config" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/newlib/platform_include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/freertos/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/freertos/xtensa/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/heap/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/log/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/include/apps" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/include/apps/sntp" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/lwip/src/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/port/esp32/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/lwip/port/esp32/include/arch" "-IC:\\Users\\ladyada\\Dropbox 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"-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/expat/port/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/wear_levelling/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/fatfs/diskio" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/fatfs/vfs" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/fatfs/src" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/freemodbus/common/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/idf_test/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/idf_test/include/esp32s2" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/jsmn/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/json/cJSON" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/libsodium/libsodium/src/libsodium/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/libsodium/port_include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/mqtt/esp-mqtt/include" "-IC:\\Users\\ladyada\\Dropbox 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(Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/wifi_provisioning/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/face_detection/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/face_recognition/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/object_detection/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/image_util/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/pose_estimation/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp-face/lib/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_littlefs/src" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/esp_littlefs/include" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/include/fb_gfx/include" -mlongcalls -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -ggdb -O2 -fstack-protector -std=gnu++11 -fexceptions -fno-rtti -MMD -c -DF_CPU=240000000L -DARDUINO=10813 -DARDUINO_METRO_ESP32S2 -DARDUINO_ARCH_ARDUINO-ESP32 "-DARDUINO_BOARD=\"METRO_ESP32S2\"" "-DARDUINO_VARIANT=\"adafruit_metro_esp32s2\"" -DESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_SERIAL_PORT=1 "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32\\cores\\esp32" "-IC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32\\variants\\adafruit_metro_esp32s2" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\sketch\\Blink.ino.cpp" -o "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\sketch\\Blink.ino.cpp.o"
<command-line>: warning: ISO C++11 requires whitespace after the macro name
Compiling libraries...
Compiling core...
Using precompiled core: C:\Users\ladyada\AppData\Local\Temp\arduino_cache_257336\core\core_d9f6d39ce130a3d53f9d0554d71720fe.a
Linking everything together...
"C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/xtensa-esp32s2-elf/bin/xtensa-esp32s2-elf-g++" "-Wl,--Map=C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958/Blink.ino.map" "-LC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/lib" "-LC:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/sdk/esp32s2/ld" -mlongcalls -T esp32s2.rom.api.ld -T esp32s2.rom.ld -T esp32s2.rom.libgcc.ld -T esp32s2.rom.newlib-data.ld -T esp32s2.rom.newlib-funcs.ld -T esp32s2.rom.spiflash.ld -T esp32s2_out.ld -T esp32s2.project.ld -T esp32s2.peripherals.ld -Wl,--cref -fno-rtti -fno-lto -u esp_app_desc -u pthread_include_pthread_impl -u pthread_include_pthread_cond_impl -u pthread_include_pthread_local_storage_impl -u ld_include_panic_highint_hdl -u start_app -u vfs_include_syscalls_impl -u call_user_start_cpu0 -Wl,--gc-sections -Wl,--undefined=uxTopUsedPriority -u app_main -u newlib_include_locks_impl -u newlib_include_heap_impl -u newlib_include_syscalls_impl -u newlib_include_pthread_impl -u __cxa_guard_dummy -Wl,--start-group "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958\\sketch\\Blink.ino.cpp.o" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_cache_257336\\core\\core_d9f6d39ce130a3d53f9d0554d71720fe.a" -lxtensa -lesp_pm -lmbedtls -lefuse -lbootloader_support -lapp_update -lesp_ipc -lspi_flash -lnvs_flash -lpthread -lesp_system -lesp_rom -lhal -lsoc -lvfs -lesp_eth -ltcpip_adapter -lesp_netif -lesp_event -lwpa_supplicant -lesp_wifi -llwip -llog -lheap -lesp_ringbuf -ldriver -lespcoredump -lesp32s2 -lesp_common -lesp_timer -lfreertos -lnewlib -lcxx -lapp_trace -lasio -lcbor -lunity -lcmock -lcoap -lconsole -lnghttp -lesp-tls -lesp_adc_cal -lesp_gdbstub -lesp_hid -ltcp_transport -lesp_http_client -lesp_http_server -lesp_https_ota -lesp_https_server -lprotobuf-c -lprotocomm -lmdns -lesp_local_ctrl -lsdmmc -lesp_serial_slave_link -lesp_websocket_client -lexpat -lwear_levelling -lfatfs -lfreemodbus -ljsmn -ljson -llibsodium -lmqtt -lopenssl -lperfmon -lspiffs -lulp -lwifi_provisioning -lesp-face -lesp_littlefs -lfb_gfx -lasio -lcbor -lcmock -lunity -lcoap -lesp_gdbstub -lesp_hid -lesp_local_ctrl -lesp_https_server -lesp_websocket_client -lexpat -lfreemodbus -ljsmn -llibsodium -lmqtt -lperfmon -lwifi_provisioning -lprotocomm -lprotobuf-c -ljson -lesp-face -lpe -lfd -lfr -ldetection_cat_face -ldetection -ldl -lesp_littlefs -lfb_gfx -lesp_adc_cal -lmdns -lconsole -lfatfs -lwear_levelling -lopenssl -lspiffs -ltinyusb -lxtensa -lesp_pm -lmbedtls -lefuse -lbootloader_support -lapp_update -lesp_ipc -lspi_flash -lnvs_flash -lpthread -lesp_system -lesp_rom -lhal -lsoc -lvfs -lesp_eth -ltcpip_adapter -lesp_netif -lesp_event -lwpa_supplicant -lesp_wifi -llwip -llog -lheap -lesp_ringbuf -ldriver -lespcoredump -lesp32s2 -lesp_common -lesp_timer -lfreertos -lnewlib -lcxx -lapp_trace -lnghttp -lesp-tls -ltcp_transport -lesp_http_client -lesp_http_server -lesp_https_ota -lsdmmc -lesp_serial_slave_link -lulp -lmbedtls -lmbedcrypto -lmbedx509 -lsoc_esp32s2 -lcoexist -lcore -lespnow -lmesh -lnet80211 -lpp -lrtc -lsmartconfig -lphy -lxtensa -lesp_pm -lmbedtls -lefuse -lbootloader_support -lapp_update -lesp_ipc -lspi_flash -lnvs_flash -lpthread -lesp_system -lesp_rom -lhal -lsoc -lvfs -lesp_eth -ltcpip_adapter -lesp_netif -lesp_event -lwpa_supplicant -lesp_wifi -llwip -llog -lheap -lesp_ringbuf -ldriver -lespcoredump -lesp32s2 -lesp_common -lesp_timer -lfreertos -lnewlib -lcxx -lapp_trace -lnghttp -lesp-tls -ltcp_transport -lesp_http_client -lesp_http_server -lesp_https_ota -lsdmmc -lesp_serial_slave_link -lulp -lmbedtls -lmbedcrypto -lmbedx509 -lsoc_esp32s2 -lcoexist -lcore -lespnow -lmesh -lnet80211 -lpp -lrtc -lsmartconfig -lphy -lxtensa -lesp_pm -lmbedtls -lefuse -lbootloader_support -lapp_update -lesp_ipc -lspi_flash -lnvs_flash -lpthread -lesp_system -lesp_rom -lhal -lsoc -lvfs -lesp_eth -ltcpip_adapter -lesp_netif -lesp_event -lwpa_supplicant -lesp_wifi -llwip -llog -lheap -lesp_ringbuf -ldriver -lespcoredump -lesp32s2 -lesp_common -lesp_timer -lfreertos -lnewlib -lcxx -lapp_trace -lnghttp -lesp-tls -ltcp_transport -lesp_http_client -lesp_http_server -lesp_https_ota -lsdmmc -lesp_serial_slave_link -lulp -lmbedtls -lmbedcrypto -lmbedx509 -lsoc_esp32s2 -lcoexist -lcore -lespnow -lmesh -lnet80211 -lpp -lrtc -lsmartconfig -lphy -lxtensa -lesp_pm -lmbedtls -lefuse -lbootloader_support -lapp_update -lesp_ipc -lspi_flash -lnvs_flash -lpthread -lesp_system -lesp_rom -lhal -lsoc -lvfs -lesp_eth -ltcpip_adapter -lesp_netif -lesp_event -lwpa_supplicant -lesp_wifi -llwip -llog -lheap -lesp_ringbuf -ldriver -lespcoredump -lesp32s2 -lesp_common -lesp_timer -lfreertos -lnewlib -lcxx -lapp_trace -lnghttp -lesp-tls -ltcp_transport -lesp_http_client -lesp_http_server -lesp_https_ota -lsdmmc -lesp_serial_slave_link -lulp -lmbedtls -lmbedcrypto -lmbedx509 -lsoc_esp32s2 -lcoexist -lcore -lespnow -lmesh -lnet80211 -lpp -lrtc -lsmartconfig -lphy -lxt_hal -lesp32s2 -lm -lnewlib -lgcc -lstdc++ -lpthread -lapp_trace -lgcov -lapp_trace -lgcov -lc -Wl,--end-group -Wl,-EL -o "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958/Blink.ino.elf"
c:/users/ladyada/dropbox (personal)/arduinosketches/hardware/espressif/arduino-esp32/tools/xtensa-esp32s2-elf/bin/../lib/gcc/xtensa-esp32s2-elf/8.4.0/../../../../xtensa-esp32s2-elf/bin/ld.exe: C:\Users\ladyada\Dropbox (Personal)\ArduinoSketches\hardware\espressif\arduino-esp32/tools/sdk/esp32s2/lib\librtc.a(rtc.o)(.text.rtc_pad_gpio_wakeup+0x50b7fb000000a9): could not decode instruction; possible configuration mismatch
"C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/esptool/esptool.exe" --chip esp32s2 elf2image --flash_mode dio --flash_freq 80m --flash_size 4MB -o "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958/Blink.ino.bin" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958/Blink.ino.elf"
esptool.py v3.0-dev
"C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/gen_esp32part.exe" -q "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958/partitions.csv" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958/Blink.ino.partitions.bin"
"C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\arduino-esp32/tools/xtensa-esp32s2-elf/bin/xtensa-esp32s2-elf-size" -A "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_163958/Blink.ino.elf"
Sketch uses 210162 bytes (16%) of program storage space. Maximum is 1310720 bytes.
Global variables use 16224 bytes (4%) of dynamic memory, leaving 311456 bytes for local variables. Maximum is 327680 bytes.
C:\Users\ladyada\Dropbox\ArduinoSketches\hardware\espressif\arduino-esp32/tools/esptool/esptool.exe --chip esp32s2 --port COM37 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0xe000 C:\Users\ladyada\Dropbox\ArduinoSketches\hardware\espressif\arduino-esp32/tools/partitions/boot_app0.bin 0x1000 C:\Users\ladyada\Dropbox\ArduinoSketches\hardware\espressif\arduino-esp32/tools/sdk/esp32s2/bin/bootloader_qio_80m.bin 0x10000 C:\Users\ladyada\AppData\Local\Temp\arduino_build_163958/Blink.ino.bin 0x8000 C:\Users\ladyada\AppData\Local\Temp\arduino_build_163958/Blink.ino.partitions.bin 
esptool.py v3.0-dev
Serial port COM37
Connecting........_
Chip is ESP32-S2
Features: WiFi, ADC and temperature sensor calibration in BLK2 of efuse
Crystal is 40MHz
MAC: 7c:df:a1:00:3f:3e
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 921600
Changed.
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 8192 bytes to 47...
Writing at 0x0000e000... (100 %)
Wrote 8192 bytes (47 compressed) at 0x0000e000 in 0.0 seconds (effective 1927.5 kbit/s)...
Hash of data verified.
Compressed 14576 bytes to 9848...
Writing at 0x00001000... (20 %)
Writing at 0x00001800... (40 %)
Writing at 0x00002000... (60 %)
Writing at 0x00002800... (80 %)
Writing at 0x00003000... (100 %)
Wrote 14576 bytes (9848 compressed) at 0x00001000 in 0.2 seconds (effective 489.9 kbit/s)...
Hash of data verified.
Compressed 210272 bytes to 118668...
Writing at 0x00010000... (1 %)
Writing at 0x00010800... (3 %)
Writing at 0x00011000... (5 %)
Writing at 0x00011800... (6 %)
Writing at 0x00012000... (8 %)
Writing at 0x00012800... (10 %)
Writing at 0x00013000... (12 %)
Writing at 0x00013800... (13 %)
Writing at 0x00014000... (15 %)
Writing at 0x00014800... (17 %)
Writing at 0x00015000... (18 %)
Writing at 0x00015800... (20 %)
Writing at 0x00016000... (22 %)
Writing at 0x00016800... (24 %)
Writing at 0x00017000... (25 %)
Writing at 0x00017800... (27 %)
Writing at 0x00018000... (29 %)
Writing at 0x00018800... (31 %)
Writing at 0x00019000... (32 %)
Writing at 0x00019800... (34 %)
Writing at 0x0001a000... (36 %)
Writing at 0x0001a800... (37 %)
Writing at 0x0001b000... (39 %)
Writing at 0x0001b800... (41 %)
Writing at 0x0001c000... (43 %)
Writing at 0x0001c800... (44 %)
Writing at 0x0001d000... (46 %)
Writing at 0x0001d800... (48 %)
Writing at 0x0001e000... (50 %)
Writing at 0x0001e800... (51 %)
Writing at 0x0001f000... (53 %)
Writing at 0x0001f800... (55 %)
Writing at 0x00020000... (56 %)
Writing at 0x00020800... (58 %)
Writing at 0x00021000... (60 %)
Writing at 0x00021800... (62 %)
Writing at 0x00022000... (63 %)
Writing at 0x00022800... (65 %)
Writing at 0x00023000... (67 %)
Writing at 0x00023800... (68 %)
Writing at 0x00024000... (70 %)
Writing at 0x00024800... (72 %)
Writing at 0x00025000... (74 %)
Writing at 0x00025800... (75 %)
Writing at 0x00026000... (77 %)
Writing at 0x00026800... (79 %)
Writing at 0x00027000... (81 %)
Writing at 0x00027800... (82 %)

A fatal error occurred: Timed out waiting for packet header
A fatal error occurred: Timed out waiting for packet header

[me-no-dev]

yes I am aware, work on USB has not completed yet :) System timer is resetting after some time needs to be prepared properly before rebooting into Download. I'm thinking of turning off persistence in the branch for now. Will fix the issue, but the device will reenumerate. If default config is used, it will come up on the same port.

You can try by commenting out the following lines: https://github.com/espressif/arduino-esp32/blob/idf-release/v4.2/cores/esp32/esp32-hal-tinyusb.c#L534-L537

[ladyada]

hmm i commented those out and it makes windows 10 upset, will manually reset for now

Global variables use 16320 bytes (4%) of dynamic memory, leaving 311360 bytes for local variables. Maximum is 327680 bytes.
esptool.py v3.0-dev
Serial port COM38
Connecting........
Traceback (most recent call last):
  File "esptool.py", line 3682, in <module>
  File "esptool.py", line 3675, in _main
  File "esptool.py", line 3330, in main
  File "esptool.py", line 515, in connect
  File "esptool.py", line 492, in _connect_attempt
  File "esptool.py", line 431, in sync
  File "esptool.py", line 362, in command
  File "site-packages\serial\serialutil.py", line 352, in timeout
  File "site-packages\serial\serialwin32.py", line 222, in _reconfigure_port
serial.serialutil.SerialException: Cannot configure port, something went wrong. Original message: WindowsError(433, 'A device which does not exist was specified.')
Failed to execute script esptool
the selected serial port Failed to execute script esptool
 does not exist or your board is not connected

[me-no-dev]

could you please try with the latest branch code?

[ladyada]

the 4.2 branch or master?

[ladyada]

ok on the latest 4.2 commit i can reset into bootloader mode but it does not seem to be able to get out of bootloader mode. i have to press the reset button to launch the new code

[ladyada]

about half the time it isnt able to get into bootloader mode, hangs at the Connecting... stage until i press reset then fails

c:/users/ladyada/dropbox (personal)/arduinosketches/hardware/espressif/esp32/tools/xtensa-esp32s2-elf/bin/../lib/gcc/xtensa-esp32s2-elf/8.4.0/../../../../xtensa-esp32s2-elf/bin/ld.exe: C:\Users\ladyada\Dropbox (Personal)\ArduinoSketches\hardware\espressif\esp32/tools/sdk/esp32s2/lib\librtc.a(rtc.o)(.text.rtc_pad_gpio_wakeup+0x50b7fb000000a9): could not decode instruction; possible configuration mismatch
"C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\esp32/tools/esptool/esptool.exe" --chip esp32s2 elf2image --flash_mode dio --flash_freq 80m --flash_size 4MB -o "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_915917/Blink.ino.bin" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_915917/Blink.ino.elf"
esptool.py v3.0-dev
"C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\esp32/tools/gen_esp32part.exe" -q "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_915917/partitions.csv" "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_915917/Blink.ino.partitions.bin"
"C:\\Users\\ladyada\\Dropbox (Personal)\\ArduinoSketches\\hardware\\espressif\\esp32/tools/xtensa-esp32s2-elf/bin/xtensa-esp32s2-elf-size" -A "C:\\Users\\ladyada\\AppData\\Local\\Temp\\arduino_build_915917/Blink.ino.elf"
Sketch uses 213598 bytes (16%) of program storage space. Maximum is 1310720 bytes.
Global variables use 16408 bytes (5%) of dynamic memory, leaving 311272 bytes for local variables. Maximum is 327680 bytes.
C:\Users\ladyada\Dropbox\ArduinoSketches\hardware\espressif\esp32/tools/esptool/esptool.exe --chip esp32s2 --port COM55 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0xe000 C:\Users\ladyada\Dropbox\ArduinoSketches\hardware\espressif\esp32/tools/partitions/boot_app0.bin 0x1000 C:\Users\ladyada\Dropbox\ArduinoSketches\hardware\espressif\esp32/tools/sdk/esp32s2/bin/bootloader_qio_80m.bin 0x10000 C:\Users\ladyada\AppData\Local\Temp\arduino_build_915917/Blink.ino.bin 0x8000 C:\Users\ladyada\AppData\Local\Temp\arduino_build_915917/Blink.ino.partitions.bin 
esptool.py v3.0-dev
Serial port COM55
Connecting........___
Traceback (most recent call last):
  File "esptool.py", line 3682, in <module>
  File "esptool.py", line 3675, in _main
  File "esptool.py", line 3330, in main
  File "esptool.py", line 515, in connect
  File "esptool.py", line 492, in _connect_attempt
  File "esptool.py", line 433, in sync
  File "esptool.py", line 362, in command
  File "site-packages\serial\serialutil.py", line 352, in timeout
  File "site-packages\serial\serialwin32.py", line 222, in _reconfigure_port
serial.serialutil.SerialException: Cannot configure port, something went wrong. Original message: WindowsError(31, 'A device attached to the system is not functioning.')
Failed to execute script esptool
the selected serial port Failed to execute script esptool
 does not exist or your board is not connected

[me-no-dev]

I'll look into it further. I hope that one of my boards will fail. TinyUSB is not yet done deal. AMF what is in Arduino is different from what is currently in IDF :) Did it stop resetting the download mid way though? When you enter download mode manually, bootloader can not reset into the app by itself (USB only). You should get a message about it:

Wrote 3072 bytes (128 compressed) at 0x00008000 in 0.0 seconds (effective 5260.5 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...
ERROR: ESP32-S2 chip was placed into download mode using GPIO0.
esptool.py can not exit the download mode over USB. To run the app, reset the chip manually.
To suppress this error, set --after option to 'no_reset'.

[me-no-dev]

The other issue is that esptool expects the port to be available when it resets the device, which is not the case once persistence is disabled and that caused the earlier error you were getting. If you want a few seconds and rerun esptool it would go.

[me-no-dev]

Commenting this line disables any tweaks about persistence, with the exception of the ability to reboot into download from software.

[ladyada]

im no longer getting intermittant errors - once it starts the auto-reset and download it completes (altho it does not auto-reset into the loaded firmware until i press reset)

[me-no-dev]

esptool will autoreset if you do not enter download manually. You do not need to press the buttons once you flash the latest 4.2. It should reboot fine on it's own

[me-no-dev]

here is my test code:

USBCDC USBSerial;

static void usbEventCallback(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data){
    if(event_base == ARDUINO_USB_EVENTS){
        arduino_usb_event_data_t * data = (arduino_usb_event_data_t*)event_data;
        switch (event_id){
            case ARDUINO_USB_STARTED_EVENT:
                Serial.println("USB PLUGGED");
                break;
            case ARDUINO_USB_STOPPED_EVENT:
                Serial.println("USB UNPLUGGED");
                break;
            case ARDUINO_USB_SUSPEND_EVENT:
                Serial.printf("USB SUSPENDED: remote_wakeup_en: %u\n", data->suspend.remote_wakeup_en);
                break;
            case ARDUINO_USB_RESUME_EVENT:
                Serial.println("USB RESUMED");
                break;
            
            default:
                break;
        }
    } else if(event_base == ARDUINO_USB_CDC_EVENTS){
        arduino_usb_cdc_event_data_t * data = (arduino_usb_cdc_event_data_t*)event_data;
        switch (event_id){
            case ARDUINO_USB_CDC_CONNECTED_EVENT:
                Serial.println("CDC CONNECTED");
                break;
            case ARDUINO_USB_CDC_DISCONNECTED_EVENT:
                Serial.println("CDC DISCONNECTED");
                break;
            case ARDUINO_USB_CDC_LINE_STATE_EVENT:
                Serial.printf("CDC LINE STATE: dtr: %u, rts: %u\n", data->line_state.dtr, data->line_state.rts);
                break;
            case ARDUINO_USB_CDC_LINE_CODING_EVENT:
                Serial.printf("CDC LINE CODING: bit_rate: %u, data_bits: %u, stop_bits: %u, parity: %u\n", data->line_coding.bit_rate, data->line_coding.data_bits, data->line_coding.stop_bits, data->line_coding.parity);
                break;
            case ARDUINO_USB_CDC_RX_EVENT:
                Serial.printf("CDC RX: %u\n", data->rx.len);
                {
                    uint8_t buf[data->rx.len];
                    size_t len = USBSerial.read(buf, data->rx.len);
                    Serial.write(buf, len);
                }
                break;
            
            default:
                break;
        }
    }
}

void setup() {
    Serial.begin(115200);
    Serial.setDebugOutput(true);
    USB.onEvent(usbEventCallback);
    USBSerial.onEvent(usbEventCallback);
    USBSerial.begin();
    USB.begin();
}
 
void loop() {
    while(Serial.available()){
        size_t l = Serial.available();
        uint8_t b[l];
        l = Serial.read(b, l);
        USBSerial.write(b, l);
    }
}

[ladyada]

I'm just trying to upload simple blink sketch:

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin();
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(100);              // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(100);              // wait for a second
}

[me-no-dev]

but you do want to upload over USB, which is not the default. USB does require specifically to be turned on (or Serial selected to go to USB CDC). Else USB is not on and you can't just upload to the board over it.

[ladyada]

yeah i have USB CDC selected by default for my variants. it works...most of the time. just not always :)