Set up auto-startup

1. Learning objectives

• Understand the basic use of service
• Set up a custom startup program at startup
• Master the addition and cancellation of file execution permissions

Use the relevant files that have been written to set the relevant status of the OLED display, fan and RGB light strip after the Raspberry Pi series motherboard is turned on. The specific principle is not analyzed here. Read the relevant code to understand it yourself.

2. Preparation before the experiment

Install the Raspberry Pi chassis according to the assembly video tutorial. You can also refer to the "Raspberry Pi Chassis_Hardware Wiring" tutorial document for installation. The chassis expansion board and related hardware connections are shown here.

3. Set up the boot-up service

Copy the CubeRaspberry.zip file in the data to the Raspberry Pi motherboard system. After unzipping the file, you need to change the path names in the kill_oled.sh and yahboom_oled.service files according to your own directory; if the paths are different, modify the location in the figure below.

The following command operations may require password input, just remember to enter

1. Copy files

Open the terminal in the CubeRaspberry folder and use the following command to copy yahboom_oled.service to the /etc/systemd/system path.

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sudo cp yahboom_oled.service /etc/systemd/system

2. Manage configuration

Use the systemctl tool to load and manage configuration.

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systemctl daemon-reload

3. Manage service

Manage the yahboom_oled service.

• Start yahboom_oled service

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systemctl start yahboom_oled

• Stop yahboom_oled service

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systemctl stop yahboom_oled

• Restart yahboom_oled service

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systemctl restart yahboom_oled

• Set yahboom_oled service to start automatically at boot

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systemctl enable yahboom_oled

• Disable yahboom_oled service to start automatically at boot

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systemctl disable yahboom_oled

Note: The picture shows the effect of each command after running. Run the command according to your needs.

4. Run kill_oled.sh

Running the kill_oled.sh file will stop the yahboom_oled service and the yahboom_oled service process, and the OLED display will not display anything.

• Add executable permissions

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chmod +x kill_oled.sh

• Cancel executable permissions

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chmod -x kill_oled.sh

Note: Generally, the file name of the executable file is in green font

• Run the kill_oled.sh file

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./kill_oled.sh

• Running effect

4. Experimental phenomenon

Follow the steps in the tutorial to realize the automatic startup of the yahboom_oled service.

After the Raspberry Pi series motherboard is turned on, the OLED display will display relevant information of the system, and the fan and RGB light strip will also work in the corresponding state.