自动检测80C51 串行通讯中的波特率

本文介绍一种在80C51 串行通讯应用中自动检测波特率的方法。按照经验，程序起动后

所接收到的第1 个字符用于测量波特率。

这种方法可以不用设定难于记忆的开关，还可以免去在有关应用中使用多种不同波特率的

烦恼。人们可以设想：一种可靠地实现自动波特检测的方法是可能的，它无须严格限制可被确

认的字符。问题是：在各种的条件下，如何可以在大量允许出现的字符中找出波特率的定时间

隔。

-Automatic detection of baud rate serial communication 80C51 This paper introduces a 80C51 serial communications applications in the automatic detection of baud rate method. Based on experience, the program received after starting the first a character used to measure the baud rate. This method can be difficult to remember not to set the switch, but also can avoid the use of a variety of applications in the different baud rate troubles. One can imagine: a reliable method of automatic baud detection is possible, it does not have strict restrictions on the characters that can be identified. The question is: in a variety of conditions, how can a large number of characters allowed in to find out the baud rate timing interval.