11.1.2 端口对象 Port Objects

Port objects, as returned by openport(), have the following methods:

端口对象由调用 openport() 得到，它有以下方法：

closeport( ): Close the port. 关闭端口。

getfd( ): Return the file descriptor as an int. 传回描述档案的整数值。

getfilled( ): Return the number of filled samples. 传回已取得值的样本的数目。

getfillable( ): Return the number of fillable samples. 传回可以取值的样本的数目。

readsamps( nsamples)

Read a number of samples from the queue, blocking if necessary. Return the data as a string containing the raw data, (e.g., 2 bytes per sample in big-endian byte order (high byte, low byte) if you have set the sample width to 2 bytes).

从队列中读取一定数目的样本，以等候态直至读取完毕。传回代表原始数据的字符串， (例如, 如你设定取样宽度为两个位元的话, 则每个样本以双字元大顺位次序存放 (高字元, 低字元)).

writesamps( samples): Write samples into the queue, blocking if necessary. The samples are encoded as described for the readsamps() return value.
把样本写到队列中去, 以等候态直至写完。样本的编码方式以 readsamps() 函数的传回值所描述的一样。

getfillpoint( ): Return the `fill point'. 传回 "填入点 fill point".

setfillpoint( fillpoint): Set the `fill point'. 设置 “填入点 fill point".

getconfig( ): Return a configuration object containing the current configuration of the port.
传回一个配置对象，其中包含了目前端口的配置。

setconfig( config): Set the configuration from the argument, a configuration object.
用引数，一个配置对象来设置端口。

getstatus( list): Get status information on last error.
取得最近一次错误的状态资料。