The project is originally designed as LED calculator but the addition of a rotary encoder to set the target system voltage results to adjusting the LED brightness using the potentiometer. By turning ...

assign encoder_speed = ( encoder_Phase_count_i << d7 ) + ( encoder_Phase_count_i << d6 ) + ( encoder_Phase_count_i << d5 ) + ( encoder_Phase_count_i << d4 ...