forked from tanchou/Verilog
- Created a new testbench file `top_ultrasonic_led_tb.vvp` to simulate the `top_ultrasonic_led` module. - Defined the necessary signals and events for testing the ultrasonic sensor functionality. - Implemented the main test sequence including triggering the ultrasonic sensor and monitoring the output LEDs based on distance measurements. - Included timing and state management for accurate simulation of the ultrasonic sensor behavior.