In xtg_aie.py, go to line 35, the mm2s function. This function performs the following operations:
1. It reads the input text file (`mm2s.txt`) into the variable `L`.
2. It transforms the data into a byte array by using two's complement and OR-ing the real and imaginary values together.
3. It sends the data in 128-sample packets to the utility using the `b_transport()` function.