forked from tanchou/Verilog
- Implemented the ultrasonic_fpga module to handle ultrasonic sensor operations including triggering and measuring distance. - Added a simulation testbench (ultrasonic_sim) to validate the functionality of the ultrasonic_fpga module. - The module includes state management for triggering the sensor and measuring the echo duration to calculate distance. - Simulation includes initialization, triggering the sensor, and checking the output distance.