基于ARM7的S3C44B0X与单片机异步串行通讯设计

Design of Asynchronous Serial Communication between S3C44B0X Based on ARM7 and SCM

在智能化动态无功补偿中,采用基于ARM7的S3C44B0X与单片机(dsPIC30F6014)共同完成复杂的控制和监控任务,两个处理器间的通讯尤为重要。文中介绍了S3C44B0X处理器的UART的单元结构和工作方式。在与单片机的数据通信中,提出采用DMA方式接收数据。实践证明,在复杂的系统中,采用DMA的UART通讯,能够保证通讯数据的可靠性。

At intelligent dynamic reactive power compensation, using S3C44B0X based on ARM7 and SCM （dsPIC30F6014） are accomplishing jointly complex control and monitoring tasks, both inter-processor communication is particularly important. This paper introduces the UART module structure and working methods on the S3CS3C44B0X processor. With the single-chip data communication, the use of DMA method receive data. Practice has proved that the UART based on DMA is able to guarantee the reliability of data communications.