How can i use STM32 as ECU of my EV.

[Sjain.1]

I want to use STM32 as ECU(VCU) for my formula student Electric Vehicle. I am using Orion BMS and DTI motor controller.

[TDK]

This is a very broad question.

In general, you should plan out what the things you need in the ECU and evaluate if a STM32 chip can do these. A good way to start would be to list all the interfaces to external devices that you need to support.

You've listed two of these. I see the DTI needs an RS232 input. The STM32 can't do this directly, but you can use a chip to convert between the single ended UART signal and the RS232 signal.

If you have no experience with the STM32, a good starting point would be to pick up a Nucleo board, flash some LEDs on it, and then move on to implementing the higher-level functionality that you need.