Understanding the Project and the Blocks Used

This project uses the following main blocks, as shown in the image:

• HC_SR04: A block that manages the HC-SR04 ultrasonic sensor, controlling the Trigger pulse and measuring the Echo response time. It directly provides the distance value.
  
  

• inverterC: Ensures that a new pulse is sent only after the previous measurement is completed. It acts as a control for the Trigger signal before UART transmission.
  
  

• uart_tx_16_bit_dec_trigger: Transmits the distance value via UART, sending decimal data in 16-bit format. The transmission is triggered by the "inTrigger" signal.
  
  

• Constant (1): Used as a separator in UART transmission.
  
  

• Input and Output Pins:

• clk: System clock input.

• IO68: Input for the Echo signal from the sensor.

• IO69: Output to activate the Trigger pin of the sensor.

• uartTx: UART data output.

• led0: LED indicating when a UART transmission is complete.