Linux串口调试小工具，如何实现高效稳定运行？
摘要：#include <string> #include <sstream> #include <stdio.h&gt
#include <string>
#include <sstream>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
void Helper();
bool IsNumber(const std::string& str);
std::string ToHex(const std::string& hex);
//quart tty0 -d 60
int main(int argc, char *argv[])
{
if(argc < 4)
{
Helper();
return -1;
}
int fd = open(argv[1], O_RDWR);
if (fd < 0)
{
printf("open %s failed!=> %s\n",argv[1], strerror(errno));
close(fd);
//return -1;
}
if(argv[2][0] !='-')
{
printf("Data type error!\n");
Helper();
close(fd);
return -1;
}
std::string str = argv[3];
switch (argv[2][1])
{
case 'd':
{
//decimal
if(!IsNumber(str))
{
printf("Parameter error!\n");
Helper();
close(fd);
return -1;
}
write(fd, str.c_str(), str.length());
break;
}
case 'h':
{
//hexadecimal
std::string tmp = ToHex(str);
if(tmp.length() == 0)
{
printf("Parameter error!\n");
Helper();
close(fd);
return -1;
}
write(fd, tmp.c_str(), tmp.length());
break;
}
case 's':
{
//string
write(fd, str.c_str(), str.length());
break;
}
default:
Helper();
break;
}
close(fd);
return 0;
}
void Helper()
{
printf("Useage:\n");
printf(" quart tty0 -i 60\n");
printf(" quart tty0 -h 60\n");
printf(" quart tty0 -s \"60\"\n");
}
bool IsNumber(const std::string& str)
{
std::istringstream iss(str);
double d;
if (!(iss >> d))
return false;
char c;
if (iss &g