I’m not familiar with this ESP32 tool. But I think I have a good idea what it expects.
Run the following command in a terminal:
pio run -v -t upload
In the generated output, there is the full command line for esptool, e.g.:
“/Users/me/.platformio/penv/bin/python2.7” “/Users/me/.platformio/packages/tool-esptoolpy/esptool.py” --chip esp32 --port “/dev/cu.usbmodem144101” --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 /Users/me/.platformio/packages/framework-arduinoespressif32/tools/sdk/bin/bootloader_dio_40m.bin 0x8000 /Users/me/Documents/PlatformIO/Projects/ESP32Proj/.pio/build/esp32doit-devkit-v1/partitions.bin 0xe000 /Users/me/.platformio/packages/framework-arduinoespressif32/tools/partitions/boot_app0.bin 0x10000 .pio/build/esp32doit-devkit-v1/firmware.bin
If you split the output, you’ll find:
0x1000 /Users/me/.platformio/packages/framework-arduinoespressif32/tools/sdk/bin/bootloader_dio_40m.bin
0x8000 /Users/me/Documents/PlatformIO/Projects/ESP32Proj/.pio/build/esp32doit-devkit-v1/partitions.bin
0xe000 /Users/me/.platformio/packages/framework-arduinoespressif32/tools/partitions/boot_app0.bin
0x10000 .pio/build/esp32doit-devkit-v1/firmware.bin
I guess these are the files you are looking for. It’s slightly confusing because two files come from your project directory, yet one uses the full and one uses a relative path. Two further files come from the PlatformIO installation directory.