摘要
介绍了当前USB-UART接口转换器频繁出现的问题,指出了出现这些问题的本质原因是UART接口永久性和USB接口的可热插拔特性这一明显差异。分析了解决上述问题的方法,讨论了可直接面向USB编程的USB至RS232/422/485接口转换器的硬、软件设计,给出了所设计的USB-UART转换器的测试结果。
Some critical common problems which appear in normal USB-UART converter are introduced at first. Later essential reasons leading to these problems are thoroughly analyzed. The ways to avoid the problems are proposed. Then the hardware and software of a USB to RS232/422/485 converter are built to verify the proposed method. Test results of the designed USB-UART converter are given at last.
出处
《测控技术》
CSCD
北大核心
2010年第2期81-84,共4页
Measurement & Control Technology
