一个关于2812智能仪表项目完整的项目工程，采用的都是汇编语言，包含了系统初始化、键盘、显示、SCI通讯、SPI接口EEP读写、PWM输出等。-A smart meter project on the 2812 complete projects that are used in assembly language, contains system initialization, keyboard, display, SCI Communications, SPI interface to re