Nexys A7 Accelerometer-Based Control System

Overview: This project implements an accelerometer-based control system for the Nexys A7 FPGA board. The system uses the onboard accelerometer to control a white ball displayed on a VGA monitor. This code is provided for educational purposes to demonstrate SPI communication, accelerometer data processing, and VGA display control. Features

Real-time accelerometer data acquisition via SPI VGA display output showing a controlled white ball Seven-segment display showing accelerometer values LED debugging output for accelerometer data Dynamic movement speed based on tilt angle Adjustable stabilization for smoother control

Hardware Requirements: Nexys A7 FPGA board VGA monitor FPGA programming cable

Implementation Details The code consists of several modules:

merged_top.v: Main module connecting all components block_controller.v: Controls ball movement based on accelerometer data display_controller.v: Generates VGA timing signals spi_master.v: Communicates with the accelerometer iclk_gen.v: Generates clock for SPI communication seg7_control.v: Controls the seven-segment display

Ball Movement The ball movement has two distinct characteristics:

Dual-speed control: The ball moves at different speeds depending on the tilt angle of the board Stabilization: Small movements are filtered out to prevent jitter, providing smoother control

Customization The code can be easily modified to adjust sensitivity and behavior:

Change speed values in the block_controller.v file Adjust stabilization thresholds for different responsiveness Modify display elements or add game mechanics

Usage: Program the Nexys A7 board with the provided bitstream Connect the board to a VGA monitor Power on the board Tilt the board to control the ball movement Observe accelerometer data on the seven-segment display and LEDs

Enginears: Walid Al-Muhtaseb Juan Lorenzo Ordenes