'struct termios' has no member named 'c_ispeed'
时间: 2023-12-24 16:05:09 浏览: 34
这个问题可能是因为你的代码使用了过时的结构体成员。在较新的系统中,termios结构体中的c_ispeed和c_ospeed成员已经被弃用。相反,使用cfsetispeed()和cfsetospeed()函数来设置输入和输出速度。你可以使用以下代码来设置输入和输出速度:
```
struct termios tty;
cfsetospeed(&tty, B9600); // 设置输出速度
cfsetispeed(&tty, B9600); // 设置输入速度
```
其中B9600是波特率,可以根据你的需要进行更改。
相关问题
has no member named ‘__getMD5Sum’
As an AI language model, I cannot determine the exact context in which you encountered this error. However, in general, this error message indicates that the code is trying to access a member function or variable called '__getMD5Sum' in a class or struct that does not have such a member. This can happen if there is a typo in the member name, or if the member was not properly defined or declared in the class or struct.
To fix this error, you need to ensure that the member function or variable '__getMD5Sum' is properly defined and declared in the class or struct. Check for any typos or syntax errors in the member name, and make sure that it is declared as public or protected if it needs to be accessed outside of the class or struct. If you are still having trouble, you may need to provide more information or context for me to assist you further.
解释struct termios { tcflag_t c_iflag; /* input mode flags */ tcflag_t c_oflag; /* output mode flags */ tcflag_t c_cflag; /* control mode flags */ tcflag_t c_lflag; /* local mode flags */ cc_t c_line; /* line discipline */ cc_t c_cc[NCCS]; /* control characters */ speed_t c_ispeed; /* input speed */ speed_t c_ospeed; /* output speed */ #define _HAVE_STRUCT_TERMIOS_C_ISPEED 1 #define _HAVE_STRUCT_TERMIOS_C_OSPEED 1 };
`struct termios` 是一个结构体,用于描述终端设备的参数设置。其中,`tcflag_t` 是一个无符号整型数据类型,用于存储终端设备的模式标志位。`cc_t` 是一个字符类型,用于存储控制字符。`speed_t` 是一个整型数据类型,用于存储终端设备的波特率。`c_iflag` 存储输入模式标志位,`c_oflag` 存储输出模式标志位,`c_cflag` 存储控制模式标志位,`c_lflag` 存储本地模式标志位,`c_line` 存储行规程,`c_cc` 存储控制字符,`c_ispeed` 存储输入波特率,`c_ospeed` 存储输出波特率。`_HAVE_STRUCT_TERMIOS_C_ISPEED` 和 `_HAVE_STRUCT_TERMIOS_C_OSPEED` 是预处理器宏,用于指示该结构体是否定义了输入和输出波特率。