Forgive me, but if you're just trying to program the STM32 over the ESP8266, wouldn't you have the option to simply flash it using the UART pins it's already connected to? You just need the two UART pins, and the BOOT pins. The stm32duino community use this method to program the Arduino bootloader o...

Hi, Currently doing an EV conversion with a 2012 Leaf Motor (EM57) ordered from Japan. Looking to buy the both boards, but it mentions that the Rev3 doesn't support field weakening and thus is limited to 3000rpm. We aren't using the original transmission and are directly connecting to the shaft of t...