A handheld game console built on the STM32F401RE Nucleo board, featuring a color TFT display, six-button input, PWM audio, and SD card storage for high scores. Runs three built-in games: Snake, Tetris, and a top-down shooter.

• MCU: STM32F401RE Nucleo board (ARM Cortex-M4, 84 MHz)
• Display: ILI9341 240x320 TFT LCD (SPI, 16-bit RGB565 color)
• Storage: MicroSD breakout module with onboard voltage regulator
• Audio: Speaker or buzzer driven by PWM
• Input: 6 tactile push buttons (active-low with internal pull-ups)

All peripherals connect to the Nucleo board headers. The display and SD card share the SPI1 bus and are active-low selected by separate chip-select lines.

Connect SCK, MOSI, and MISO to the shared SPI1 lines above.

The SD breakout has an onboard regulator and level shifter -- it takes 5V on VCC and outputs 3.3V logic on the SPI lines. Connect SCK, MOSI, and MISO to the shared SPI1 lines above.

All buttons are active-low. Internal pull-ups are enabled in firmware, so each button only needs to connect between its pin and GND.

Driven by TIM4 Channel 3 PWM output. Connect a small speaker or passive buzzer between PB8 and GND.

Snake -- Classic snake on a 30x40 tile grid. Eat food to grow, avoid hitting yourself. D-Pad controls direction.

Tetris -- All 7 tetrominoes, rotation, hold piece, next piece preview, line clearing, and level-based speed increases. D-Pad moves and rotates, A hard-drops, B holds.

Top-Down Shooter -- Move left and right to dodge enemies and fire upward. Enemies spawn from the top and shoot back. Difficulty increases as your score climbs.

High scores are saved to the SD card using FatFS. Each game stores its own best score, which persists across power cycles.

This is an STM32CubeIDE project. Open the repository as an existing STM32CubeIDE project, build, and flash to the Nucleo board over the on-board ST-Link.