基于PIC单片机SPI的数码显示方法研究

Study on LED Display Based on SPI of PIC Single Chip Computer

采用PIC16F877A中档单片机上SPI总线方式简化机器人控制盒设计,实现键盘输入与一组数码管的多状态显示,并通过优化软件设计,使数码管具有回显功能,同时可对已输入数据进行校正修改,给出了具体的软硬件实现方法。实验结果表明该系统稳定可靠,能完全实现设计要求。

Keyboard Input and multimode display of one group of LED can be realized by way of SPI Bus of PIC16F877A to simplify the design of motor-controller. Redisplay of LED can also be realized by optimizing the program to modify the data that was already inputted. The design of hardware and software are given in detail. The results show that the system is reliable and can meet the design requirements.