18. Battery LED Bar

Design a Verilog module that drives an 8-LED battery bar based on a level input. The bar should light LEDs from LSB to MSB (right to left) as the level increases.

Requirements

• Module name: battery_led_bar
• Inputs:
  • level[3:0] — battery level from 0 to 8 (inclusive)
• Outputs:
  • led_bar[7:0] — LED bar where the lowest level bits are 1, higher bits are 0

Expected behavior