Template: RPI open spi
From Waveshare Wiki
Enable SPI interface
PS: If you are using a system with a Bullseye branch, you need to change "apt-get" to "apt", and the system of the Bullseye branch only supports Python3.
- Open terminal, use command to enter the configuration page
sudo raspi-config Choose Interfacing Options -> SPI -> Yes to enable SPI interface
Reboot Raspberry Pi：
sudo reboot
Make sure that the SPI is not occupied by other devices, you can check in the middle of the /boot/config .txt.