stm32+GP2Y1010AU,通过屏幕显示pm2.5的值，stm32的A1口连接传感器的LED端口，A0连接数据口！(60/5000 Stm32 +GP2Y1010AU displays the value of pm2.5 through the screen. The A1 port of stm32 connects to the LED port of the sensor, and A0 connects to the data port!)