com_test.zip_COM_qnx_串口是否

#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <termios.h> #include <string.h> #include <errno.h> using namespace std; main() { struct termios opt; int fd = open("/dev/ser1", O_RDWR | O_NOCTTY); //榛樿涓洪樆濉炶鏂瑰紡 if(fd == -1) { perror("open serial 0\n"); exit(0); } tcgetattr(fd, &opt); cfsetispeed(&opt, B115200); //璁剧疆缁撴瀯termios鐨勮緭鍏ユ尝鐗圭巼涓?9600Bps cfsetospeed(&opt, B115200); //璁剧疆缁撴瀯termios鐨勮緭鍑烘尝鐗圭巼涓?9600Bps //璁剧疆缁堢鍙傛暟锛孴CANOW淇敼绔嬪嵆鍙戠敓 if(tcsetattr(fd, TCSANOW, &opt) != 0 ) { perror("tcsetattr error"); return -1; } //bit opt.c_cflag &= ~IHFLOW; opt.c_cflag &= ~CSIZE; opt.c_cflag |= CS8; //stop opt.c_cflag &= ~CSTOPB; //event opt.c_cflag &= ~PARENB; opt.c_cflag &= ~INPCK; //bit size opt.c_cflag |= (CLOCAL | CREAD); // opt.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG); //Raw output opt.c_oflag &= ~OPOST; //discard opt.c_oflag &= ~(ONLCR | OCRNL); //娣诲姞鐨? opt.c_iflag &= ~(ICRNL | INLCR); opt.c_iflag &= ~(IXON | IXOFF | IXANY); //娣诲姞鐨? //timeout opt.c_cc[VTIME] = 0; opt.c_cc[VMIN] = 0; tcflush(fd, TCIOFLUSH); //璁剧疆鍓峟lush printf("configure complete\n"); if(tcsetattr(fd, TCSANOW, &opt) != 0) { perror("serial error"); return -1; } printf("start send and receive data\n"); int len = 0, n = 0; unsigned char read_buf[254]; unsigned char write_buf[254]; // char read_buf[254]; // char write_buf[254]; while(1) { n = 0; len = 0; memset(read_buf, 0, sizeof(read_buf)); //绫讳技浜巑emset memset(write_buf, 0, sizeof(write_buf)); while( (n = read(fd, read_buf, sizeof(read_buf))) > 0 ) { printf("len = %d\n", n); for(int i = len; i < (len + n); i++) { write_buf[i] = read_buf[i - len]; printf("%02x ", write_buf[i]); } len += n; } sleep(2); } }