Driver development on Ubuntu is an important and interesting task. This article will introduce how to configure the Ubuntu driver development environment and provide some sample codes for programming practices.
Step 1: Install development tools and dependencies
First, we need to install some necessary development tools and dependencies. Open a terminal and execute the following command:
sudo apt update
sudo apt install build-essential linux-headers-$(uname -r)
The above command will update the package list and install the build tools and kernel headers.
Step 2: Get the driver source code
Next, we need to obtain the source code of the driver. You can get the driver code from the official website or version control system. Assume you have obtained the code and saved it in ~/drivera directory.
Step 3: Compile and install the driver
Enter the directory where the driver source code is located and execute the following commands to compile and install:
cd ~/driver
make
sudo make install
The above command will use the Makefile to compile the driver code and install the generated driver module into the system.
Step 4: Load the driver module
Execute the following command to load the driver module:
sudo modprobe driver_module
where driver_moduleis the name of your driver module. After loading successfully, you can use lsmodthe command to verify whether the driver has been loaded.
Step 5: Write the driver
Now, let's write a simple driver as an example. Create a new file, name it my_driver.c, and open it with a text editor:
#include &l