9. Read disk space.

10. Display information on OLED.

The function ssd1306_drawText(int x, int y, char *str) is used to set the content displayed on

OLED. The first parameter is x, which controls the left and right offset. The second one is y,

which controls the up and down offset. The third is string pointer, also the content to be

displayed.

Run the function ssd1306_display() to refresh and display.

7. Raspberry Pi Auto-start

1. Create script start.sh

nano /home/pi/temp_control/start.sh

Input the following content:

Press ctrl+X+Y to save, and tap button "Enter".