Actually the reason for using fpga with UART is that this project is all about control a diy drone. In other words, rotors of drone could take by their value through UART and the whole programming language is in VHDL. This is why I am using BASYS3 with UART, an embedded systems could handle the project after compiling the code. But I cannot send the values that I entered by UART using TERA TERM to servo motors in this code, and I don't know how to handle because things are seemed okay, the loopback that I wrote for UART for sending and receiving the values couldnt rotate the motors the way I wanted, there are only little vibration on the motors whatever I enter values.
Thank you for your attention.