Feature/delay method

[HowardWhile]

Hi rossmann-engineering

I provide a delay method
Can reduce the RTT (round-trip time) of communication

I am use

SpinWait sw_delay = new SpinWait();
sw_delay.SpinOnce(); 

to replace

System.Threading.Thread.Sleep(1);  

After modification, the average RTT on serial-port communication is reduced from 30 to 16(millisecond)

Hope you like it.