修改了串口通信的代码板子发送的数据PC收不到 第4页

sp; default:         fprintf(stderr,"Unsupported stop bits\n");         return (FALSE);     }           /* Set input parity option */    if (parity != 'n')         options.c_iflag |= INPCK;           options.c_cc[VTIME] = 150; // 15 seconds     options.c_cc[VMIN] = 0;       tcflush(fd,TCIFLUSH); /* Update the options and do it NOW */    if (tcsetattr(fd,TCSANOW,&options) != 0)     {         printf("SetupSerial 3");         return (FALSE);     }     return (TRUE);  }     /** *@breif 打开串口 */int OpenDev(char *Dev) {     int fd = open(Dev,O_RDWR | O_NOCTTY);         //| O_NOCTTY | O_NDELAY     if (-1 == fd)     {         printf("Can't Open Serial Port");         return -1;     }     return fd; }     /** *@breif    main() */int main(int argc, char **argv) {     int fd;     int nread;     int nRet = 0;     char buff[512] = {"this is Serial Port Test!\r\n"};     //char buff[512];     char *dev ="/dev/ttyS0";           fd = OpenDev(dev);     if (fd>0)     {   &nbs

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