这个问题到现在也没有解决（太多坑了！），只能换个语言干了！
能写出来，还是多亏了百度，和前辈们的分享！
但是有时候会报 do_IRQ 没有向量错误！
配置文件内容如下：
@*/dev/ttyUSB 5/dev/ttyS 5
#include <stdio.h> #include <string.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <getopt.h>#include <termios.h> //set baud rate #include <sys/select.h> #include <sys/time.h> #include <sys/types.h> #include <errno.h> #include <sys/stat.h> // 读取配置文件最大行数#define MAXLINEN 10// 最多支持扫描的类型数#define MAXDEVICE 6// 开辟内存空间#define CHARARRAY(LEN) (char*)calloc(LEN, sizeof(char))#define DEVICENUMARRAY(LEN) (DeviceNumP)calloc(LEN, sizeof(DeviceNum))//接受数据容器大小#define buffLen 1024 // 延时#define rcvTimeOut 200// 遍历时用的串口名和数量// eg: /dev/ttyUSB 5typedef struct deviceNum{char Name[30];int Num;}DeviceNum, *DeviceNumP;// 配置文件名static char* configName = "status"; // 文件第一行内容 核对的信息行char* PASSWDSTR[MAXLINEN] = {NULL};// 配置文件设备类型， 扫描数量// eg: /dev/ttyUSB 5DeviceNumP DEVICEN[MAXDEVICE] = {NULL};// 波特率static int BPS;// 串口名static char DEVNAME[50];// 命令行解析static const struct option long_option[] = {{"send", required_argument, NULL, 's'},{NULL, 0, NULL, 0}};/*自动扫描串口设备连接上设备后，发送信息验证返回信息，确保连接正确。passwd 指针数组位置信息：0 要发送的信息1 核对的信息返回值为 fdSerial 错误返回 0*/int autoMaticAddressing(char** passwd);/*设置串口信息fdSerial 串口文件描述符pbs 波特率*/int setSerialOpt(int fdSerial, int pbs);/*核对连接上的串口设备是正确的设备fdSerial 串口文件描述符send 要发送的信息receive 核对的信息*/int checkDevice(int fdSerial, char* send, char* receive);/*调试串口使用fdSerial 串口文件描述符*/void DEBUG(int fdSerial);/*输出已连接上设备的波特率*/void putBaudrate();/*读取本地文件中的配置信息*/void getConfigFile();/*释放指针数组空间*/void freeCharArray(char** array);/*释放指针数组空间*/void freeDeviceNumArray(DeviceNum** array);/*删除换行符 \r \n*/void delChangeLineChar(char* Line);/*-----------------------------------------------------*/ /*******************************************************/ /*************Linux and Serial Port *********************/ /*************Linux and Serial Port *********************/ int openPort(char* devName) {int fd = 0;fd = open(devName, O_RDWR | O_NOCTTY | O_NDELAY); if (-1 == fd) {// perror("Can't Open Serial Port"); return(0); }// 阻塞文件if (fcntl(fd, F_SETFL, 0)<0) {//printf("fcntl failed!\n"); } else {fcntl(fd, F_SETFL, 0); //printf("fcntl=%d\n", fcntl(fd, F_SETFL, 0)); } /* 检查是否为设备if (isatty(STDIN_FILENO) == 0) {printf("standard input is not a terminal device\n"); } else {printf("is a tty success!\n"); } //printf("fd-open=%d\n", fd); */strcpy(DEVNAME, devName);return fd; } int setOpt(int fd, int nSpeed, int nBits, char nEvent, int nStop) {struct termios newtio, oldtio; if (tcgetattr(fd, &oldtio) != 0) {//perror("SetupSerial 1"); return -1; } bzero(&newtio, sizeof(newtio)); newtio.c_cflag |= CLOCAL | CREAD; newtio.c_cflag &= ~CSIZE; switch (nBits) {case 7: newtio.c_cflag |= CS7; break; case 8: newtio.c_cflag |= CS8; break; } switch (nEvent) {case 'O': //奇校验 newtio.c_cflag |= PARENB; newtio.c_cflag |= PARODD; newtio.c_iflag |= (INPCK | ISTRIP); break; case 'E': //偶校验 newtio.c_iflag |= (INPCK | ISTRIP); newtio.c_cflag |= PARENB; newtio.c_cflag &= ~PARODD; break; case 'N'://无校验 newtio.c_cflag &= ~PARENB; break; } switch (nSpeed) {case 38400: cfsetispeed(&newtio, B38400); cfsetospeed(&newtio, B38400); BPS = 38400;break; case 921600: cfsetispeed(&newtio, B921600); cfsetospeed(&newtio, B921600); BPS = 921600;break; case 115200: BPS = 115200;cfsetispeed(&newtio, B115200); cfsetospeed(&newtio, B115200); break; default: BPS = 38400;cfsetispeed(&newtio, B38400); cfsetospeed(&newtio, B38400); break; } if (nStop == 1) {newtio.c_cflag &= ~CSTOPB; } else if (nStop == 2) {newtio.c_cflag |= CSTOPB; } newtio.c_cc[VTIME] = 0; newtio.c_cc[VMIN] = 0; tcflush(fd, TCIFLUSH); if ((tcsetattr(fd, TCSANOW, &newtio)) != 0) {//perror("com set error"); return -1; } //printf("---------- set done! ----------\n"); return 0; } int readDataTty(int fd, char *rcv_buf, int TimeOut, int Len) {int retval; fd_set rfds; struct timeval tv; int ret, pos; tv.tv_sec = TimeOut / 1000; //set the rcv wait time tv.tv_usec = TimeOut % 1000 * 1000; //100000us = 0.1s pos = 0; while (1) {FD_ZERO(&rfds); FD_SET(fd, &rfds); retval = select(fd + 1, &rfds, NULL, NULL, &tv); if (retval == -1) {//perror("select check is it readable error!"); break; } else if (retval) {ret = read(fd, rcv_buf + pos, 1); if (-1 == ret) {break; } pos++; if (Len <= pos) {break; } } else {break; } } return pos; } int sendDataTty(int fd, char *send_buf, int Len) {ssize_t ret; ret = write(fd, send_buf, Len); if (ret == -1) {printf("write device error\n"); return -1; } return 1; } int main(int argc, char** argv) {char argvSend[30] = "";int opt = 0;while ((opt = getopt_long(argc, argv, "s:", long_option, NULL)) != -1){switch(opt){case 0: break;case 's': strcpy(argvSend, optarg);}}//printf("%s \n", argvSend);int fdSerial = 0; getConfigFile();char send[20] = "";char receive[20] = "";char* passwd[2] = {send, receive};send[0] = PASSWDSTR[0][0];receive[0] = PASSWDSTR[0][1];//openPort if ((fdSerial = autoMaticAddressing(passwd)) == 0) {printf("Failed to connect to serial device!\n"); freeCharArray(PASSWDSTR);freeDeviceNumArray(DEVICEN); return 1; } //printf("Serial fdSerial=%d\n", fdSerial); tcflush(fdSerial, TCIOFLUSH);//清掉串口缓存 fcntl(fdSerial, F_SETFL, 0); //DEBUG(fdSerial);char buffRcvData[buffLen];sendDataTty(fdSerial, argvSend, sizeof(argvSend)); int readDataNum = 0;readDataNum = readDataTty(fdSerial, buffRcvData, rcvTimeOut, buffLen);close(fdSerial);// 释放申请的内存空间freeCharArray(PASSWDSTR);freeDeviceNumArray(DEVICEN); return 0; }// 自动寻址int autoMaticAddressing(char** config){int fdSerial = 0;char devName[50];int max = 5;int i = 0;int devIndex = 0;int res = 0;for (devIndex = 0; devIndex < MAXDEVICE; devIndex++){if (!DEVICEN[devIndex] ||strlen(DEVICEN[devIndex]->Name) < 2 ){//printf("+++%s---\n", DEVICEN[devIndex]->Name);continue;}for (i = 0; i < DEVICEN[devIndex]->Num; i++){sprintf(devName, "%s%d", DEVICEN[devIndex]->Name, i);// printf("---%s---\n", devName);fdSerial = openPort(devName);if (fdSerial != 0){// printf("passwd:%s-%s-\n", config[0], config[1]);if (setSerialOpt(fdSerial, 38400) > 0 &&checkDevice(fdSerial, config[0], config[1])){res = 1;break;}else if (setSerialOpt(fdSerial, 921600) > 0 &&checkDevice(fdSerial, config[0], config[1])){res = 1;break;}}}if (res){break;}}if (res){putBaudrate();}else{fdSerial = 0;}return fdSerial;}// 设置串口信息int setSerialOpt(int fdSerial, int pbs){if (setOpt(fdSerial, pbs, 8, 'N', 1) < 0) {// perror("set_opt error"); return 0; } // printf("--- OK ---\n");return 1;}// 验证设备int checkDevice(int fdSerial, char* send, char* receive){char receiveData[buffLen] = "";int readDataNum = 0;sendDataTty(fdSerial, send, sizeof(send)); readDataNum = readDataTty(fdSerial, receiveData, rcvTimeOut, buffLen);//printf("%d == %s\n", readDataNum, receiveData);if (readDataNum == 1){if (receive[0] == receiveData[0]){return 1;}}else if (readDataNum > 1){if (strcmp(receiveData, receive) == 0){return 1;}else{return 0;}}else{return 0;}}// 打印波特率void putBaudrate(){printf("--------------------\n");printf("Device = %s\n", DEVNAME);printf("Baudrate = %d\n", BPS);printf("--------------------\n");}// 读取配置文件void getConfigFile(){FILE* fp = NULL;fp = fopen(configName, "r");int maxChar = 20;int line = 0;int line_1 = 0;DeviceNumP dev;do{//fseek(fp, SEEK_END, 0);if (line == 0){PASSWDSTR[line] = CHARARRAY(maxChar);fgets(PASSWDSTR[line], maxChar, fp);delChangeLineChar(PASSWDSTR[line]);//printf("%se\n", PASSWDSTR[line]);}else{line_1 = line - 1;DEVICEN[line_1] = DEVICENUMARRAY(1);dev = DEVICEN[line_1];fscanf(fp, "%s %d", dev->Name, &dev->Num);}if (feof(fp)){break;}}while( ++line < MAXLINEN);fclose(fp);}// DEBUGvoid DEBUG(int fdSerial){char buffRcvData[buffLen] = {0 }; unsigned int readDataNum = 0; char c[10] = "";int sendNum = 10;while (1){scanf("%s", c);printf("send: %s\n", c);sendDataTty(fdSerial, c, sendNum); printf("rec:%s\n", buffRcvData);readDataNum = 0;readDataNum = readDataTty(fdSerial, buffRcvData, rcvTimeOut, buffLen);printf("recevie %d -----\n", readDataNum);} }//释放内存空间void freeCharArray(char** array){char* line = NULL;int n = 0;for (n = 0; n < MAXLINEN; line = array[n], n++){if (!line){continue;}//printf("%d: %s\n",n, line);free(line);}}//释放内存空间void freeDeviceNumArray(DeviceNum** array){DeviceNumP line = NULL;int n = 0;for (n = 0; n < MAXDEVICE; line = array[n], n++){if (!line){continue;}//printf("%s: %d\n",line->Name, line->Num);free(line);}}//删除换行符void delChangeLineChar(char* Line){int Len = strlen(Line);int n = 0;for (n = 0; n < Len; n++){if (Line[n] == 10 || Line[n] == 13){Line[n] = '\0';break;}}}
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