Hardware Validation

After programming the FPGA, it’s time to test the system in practice.

1. ADC Connection

• • Make sure the SDA, SCL, VCC, and GND pins are properly connected between the FPGA and the external ADC.

  • Verify the power supply voltage (3.3 V or 5.0 V, depending on the ADC used).

2. Analog Input

• • Depending on your ADC, connect an analog signal (e.g., a potentiometer or sensor) to the channel being read (Ch0, Ch1, etc.).

3. Buzzer

• • Attach the buzzer to the “buzzer” output pin (using a transistor or driver if needed, since some buzzers require more current than the FPGA can directly supply).

4. Testing

• • Power on the board and observe:

    • If the ADC channel value rises above ~10000, the buzzer should sound at a chosen frequency (e.g., 698 Hz), intermittently at 2 Hz.

    • If it stays below the threshold, the buzzer remains off.

5. Possible Adjustments

• • If the buzzer does not sound, check the connections, power supply, and buzzer polarity/soldering.

  • If the ADC reading is invalid, confirm that the SDA/SCL pin assignments are correct and that the ADC’s I2C address (the address parameter) matches your actual component.