How to Flash ESP32-S2 / Wemos S2 mini v1.0.0 purple pcb with usb-c

[grundy]

hello everyone,

i recently got these wemos s2 mini boards wich are nice because of the high gpio count but i cant really get it to work, did anyone get one of these running?

i connected the board to a win10 pc then holding 0 button - press rst button - release 0 button to put it in download mode -> serial port comes up on the pc

first i tried with the expressif 3.8.5 downloadtool from the espeasy release, it has a s2 button but does not work with the s2 over usb, so i got the 3.9.2 from the expressif site
there i (think i ) could download the (EDIT, wrong filename earlier ) ESP_Easy_mega_20220616_normal_ESP32s2_4M316k.factory.bin to address 0 , at least it gave no errors.

so finally i press reset on the board but then nothing happens , the serial port disappears so i cant get any output, no wlan appears and i cant enter settings to connect to my routers wlan -> how to continue at this point?

do i need to get an additional usb-serial and connect it to the board to enter settings or did i anything wrong because no ap appears ? hope anyone has a little hint for me ^^

[Ath]

On an ESP32s2 board you must use an ESP32s2 build, as that CPU isn't compatible with the 'regular' ESP32 CPU. There are a few builds available that support the ESP32s2.
The princple of flashing the factory.bin at address 0x0000 is correct though

NB: I'm running a NeoPixel build here, as my s2 board as such pixel on-board

[grundy]

sorry i copied the wrong filename in the post earlier, of course i used
ESP_Easy_mega_20220616_normal_ESP32s2_4M316k.factory.bin

i hope the esp easy flasher tool supports the esp32 boards too one day , would make things easier

[Ath]

The flashtool should support the ESP32s2, though my initial flash is usually via VSCode, as I'm in 'developer mode'
AFAIK, the Espressif flasher does support the s2, so that should work as expected. You might want to check the 'DoNotChgBin' checkbox, that may help