Hi

I have the same problem and just asked in this thread:
https://www.esp32.com/viewtopic.php?t=6493

Hope Kolban have ported the ESPtool

Regards

Hi

I am having the exact same need for a C version of the flashing tool. I need to flash the ESP32 from a MCU (LPC4076) through the UART.
@Kolban: did you end up porting it ? if Yes is it available as open source .

Regards