First, download various documents related to GD32L233C-START from GigaDevice's official website http://www.gd32mcu.com/cn/download/0?kw=GD32L2 or EEWORLD https://www.eeworld.com.cn/huodong/GigaDevice_...
I like to make a display first. With the subsequent timing of the display, it is more convenient to display the sensor data. I have a full-color OLED small screen that I have been using. It has an SPI...