Understanding the Project and the Blocks Used

The basic diagram of this project consists of reading data from an ADC (Analog-to-Digital Converter) via I2C. Then, based on the value read, we compare it to a threshold. If it exceeds that threshold, a buzzer sound is generated at a predefined frequency, with a periodic on/off pulse.

Below is an overview of the main blocks:

1. startAll

• • Releases system operation after a few clock cycles, generating the start signal.

  • Ensures that the other blocks only begin read/write operations after a short delay.

2. i2c

• • Implements the I2C protocol for communication with the ADC.

  • Contains input/output signals for sdaIn, sdaOutReg, and scl, as well as control signals (instruction, i2cEnable, etc.).

3. adc

• • Internally interfaces with the i2c block to configure and read the ADC value.

  • Sends commands to the ADC (via I2C) and receives the converted data, storing it in registers (e.g., Ch0, Ch1, etc.).

  • Typical output: 16-bit digital values representing the measured analog signal (e.g., Ch0, Ch1, Ch2, Ch3).

4. greater

• • Compares two 16-bit values, returning 1 if numa is greater than numb.

  • Here, we use it to check whether the ADC value exceeds a certain threshold (e.g., 10000).

5. two_hz_clock

• • Generates a 2 Hz signal (or a frequency defined by a parameter).

  • Used to pulse or “blink” a signal, in this case, creating an on/off effect for the buzzer periodically.

6. tune

• • Generates a waveform (square wave) at a desired frequency for the buzzer.

  • Receives the global clock and a frequency parameter (freq).

7. and3b, AND2b, inverterC

• • Logical blocks that assist in enabling or inhibiting combinational signals, controlling whether the buzzer is active at specific times.