CH452按键和显示板驱动程序,采用级联方式,模拟SPI口一次发送24位数据.每级120个灯和120个按键.采用查表换算.-CH452 keys and display drivers, concatenation, a simulation of SPI I sent 24 data. Each level 120 lights and 120 keys. Using Lookup conversion.

CH452按键，上位机下位机简单通讯，stm32f106mb-CH452 button, the simple communication of the lower unit of the host computer, stm32f106mb