摘要
基于嵌入式微处理器的智能数据采集与控制系统通常采用UART口进行通信。大多数微处理器仅有1或2个UART口,限制了其应用。基于TM4C1233H6PZ的双处理器系统,利用SPI接口作桥接,实现了16个UART口的通信,并在实用产品上得到验证。该方法适用于串口数需求较多、数据量较大的系统,解决了微处理器UART口不够用的局限性问题,提供了一种扩展UART口的方法。
The intelligent data acquisition and control system based on embedded microprocessor often uses UART ports to communicate with other devices. Most of the microprocessors have only 1 to 2 UART ports, so the application is limited. The dual-microprocessor system based on TM4C1233H6PZ achieves 16 UART ports communication by the bridge of SPI interface. The method is proved in the practical product. The technique is applied for the acquisition system which needs more serial ports and with a large amount of data. It solves the problem that the lack of serial ports in the microprocessor,and a multi-serial port extension method is provided.
作者
王国辉
Wang Guohui(Potevio Institute of Technology,Beijing 100080,China)
出处
《单片机与嵌入式系统应用》
2016年第11期47-50,共4页
Microcontrollers & Embedded Systems
