Multi-Function Digital Clock

This project is a multi-function digital clock implemented on a Nexys 4 DDR board. The clock includes a 24-hour format, a timer, and an alarm function.

Features

• 24-hour clock: Displays the current time in a 24-hour format.
• Timer: Allows you to set a countdown timer.
• Alarm: Allows you to set an alarm for a specific time.

Hardware Requirements

• Nexys 4 DDR board

Software Requirements

• Xilinx Vivado for FPGA programming

Setup and Installation

1. Clone this repository to your local machine.
2. Create a new project in Xilinx Vivado.
3. Add the source files to the project.
4. Generate a bitstream file.
5. Program the Nexys 4 DDR board with the bitstream file.

Usage

System inputs

• CPU_RESET will reset the system.
• Use the right button(BTNR) to switch between the clock, timer, and alarm modes.
• Use the up button(BTNU) to increment the selected time unit(hour, minute, second, or none).
• Use the down button(BTND) to switch between the time units.
• Use the left button(BTNL) to enable/disable the alarm.
• Use the center button(BTNC) to start/stop the timer.

System outputs

• The seven-segment displays will display the time in a 24-hour format based on the current mode.
• LED0 and LED1 display the current mode.
• LED2 and LED3 display the selected time unit.
• LED4 displays timer enable/disable.
• LED5 displays timer reached zero.
• MONO_AUDIO_OUT makes some noise when the timer reaches zero.
• LED6 displays alarm enable/disable.
• LED7 displays alarm triggered or not.
• MONO_AUDIO_OUT makes some noise when the alarm is triggered.
• LED8 through LED15 display the seconds in binary based on the current mode.

License

This project is licensed under the MIT License. See the LICENSE file for details.