7. Application Demo: Building a Ranging Sensor Kernel Module

Try these first

1. 1.

   What is the primary function of an ultrasonic sensor?

   Hint

   Think about how sound waves travel.

2. 2.

   What does GPIO stand for?

   Hint

   Remember, it's used for interfacing hardware.

3. 3.

   What is the first step in creating a kernel module?

   • Compile the code
   • Initialize the GPIO pins
   • Write the documentation

   Hint

   Consider the setup process of the sensor.

4. 4.

   True or False: The echo pin is responsible for sending the initial trigger signal.

   • True
   • False

   Hint

   Think about the role each pin plays.

5. 5.

   Propose an enhancement to the kernel module that provides additional sensor data such as the average distance over multiple readings. Describe the approach.

   Hint

   Consider how you can store multiple results.

6. 6.

   How would you debug a situation where the echo pin does not consistently receive an echo signal? Outline your troubleshooting steps.

   Hint

   Think about the physical connections and settings you can verify.