steval-ctm010v1 + STLINK V3 MINIE ， how to connect J3 of steval-ctm010v1 to STLINK VCP

[wcx8229]

Hello ,

  I have a steval-ctm010v1 , a  STLINK V3 MINIE.

  I want to use Motor Pilot Tool .

  But J3 on steval-ctm010v1 is DP9 interface (232), and STDC14 on STLINK V3.

How can I do the connection between these ports ?

[ahsrabrifat]

RS232 levels (±12V typical) are not directly compatible with TTL UART levels (0-3.3V or 0-5V). 

Source: https://www.theengineeringprojects.com/2018/10/introduction-to-rs-232.html

You cannot directly connect the STLINK-V3MINIE to the DB9 port on the STEVAL board without voltage level conversion.

[wcx8229]

So, should I have another hardware tool i.e. TTL<-->RS232 between STLINK VCP and J3 on CTM010V1 board?