[HELP ME] 关于C语言读取串口数据的问题！

Oneall

各位达达，这个问题已经耗了我4天的时间了，还是没有自己搞定，请各位帮忙啊
我用c读取一个串口的字符串，结果读到的全是乱码，但超级终端和其他程序读取正常.

我用stty命令查看了，端口参数都已经是正常的，比如4800 8位 无奇偶校验 1个停止位
但我用nread = read(fd, readBuffer, bufferSize);
读取后为了打印 readBuffer[nread] = '\0';
printf("%s\n" readBuffer);
打印出来的全是乱码。

按道理字符串都是ASCII码，我用循环打印每个字符的16进制，发现好多都已经大于127了

各位帮忙解决一下，谢谢了！ 发到CSDN上没什么动静 唉～

john_yao

char或者unsigned char，这是一个问题。

brauceunix

不能用printf("%s",); 以\0结束。。应该看一下数据长度
for (int i = 0; i < len; i ++) {
    printf("%x", buf);
}

brauceunix

以前和你一样。。 这个问题。。花了我10天。。唉。

wisonjiahe08

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