摘要
通过讨论NiosⅡ处理器应用中的UART软件硬件设计方法,以及在设计过程中需要注意的问题,给出了UART寄存器的定义和UART波特率的计算方法,描述了硬件连接电路原理,具体说明了Nios Ⅱ系统中IP核的使用方法。同时,给出了Nios Ⅱ系统UART软件的数据结构,提供了一种简便可行的检测串口通信是否正常的方法,并给出了Nios Ⅱ下的串口中断编程方法。
The design of UART software and hardware for Nios Ⅱ processor application and some problems during the design process are discussed. The definition of UART registers and the calculating method of the baud rate for UART are supplied. Besides, the hardware connection of UART circuit is described. Then the usage method of the IP core in Nios Ⅱ system is explained. The data structure of UART software for Nios Ⅱ is also given. Furthermore, a simple and effective method of checking the UART communication and a UART interruption programming method based on Nios Ⅱ processor are provided.
出处
《北京联合大学学报》
CAS
2007年第2期54-57,共4页
Journal of Beijing Union University
