用QT（底层用的是C）写的基于AT命令Text格式短信

#include "adrport.h" int OpenAdrPort() { char sPortName[64]; sprintf(sPortName, "/dev/ttyUSB0"); printf("sPortName=%s\n", sPortName); CloseAdrPort(); fd = open(sPortName, O_RDWR | O_NOCTTY | O_NONBLOCK); if (fd < 0) { printf("open error %d %s\n", errno, strerror(errno)); } else //else fd<=0 begin { struct termios t; // switch off non-blocking mode int fdFlags; if ((fdFlags = fcntl(fd, F_GETFL)) == -1) { perror("fdFlags"); return -1; } fdFlags &= ~O_NONBLOCK; if (fcntl(fd, F_SETFL, fdFlags) == -1) { perror("switching of non-blocking faild"); return -1; //throwModemException(_("switching of non-blocking mode failed")); } // flush all pending output tcflush(fd, TCOFLUSH); // toggle DTR to reset modem int mctl = TIOCM_DTR; if (ioctl(fd, TIOCMBIC, &mctl) < 0) { perror("clear DTR faild"); return -1; } usleep(600000); if (ioctl(fd, TIOCMBIS, &mctl) < 0) { perror("set DTR faild"); return -1; } //throwModemException(_("setting DTR failed")); // get line modes if (tcgetattr(fd, &t) < 0) { perror("tcgetattr device"); return -1; } // set line speed cfsetispeed(&t, B9600); cfsetospeed(&t, B9600); // set the device to a sane state t.c_iflag |= IGNPAR | (false ? IXON | IXOFF : 0); t.c_iflag &= ~(INPCK | ISTRIP | IMAXBEL | (false ? 0 : IXON | IXOFF) | IXANY | IGNCR | ICRNL | IMAXBEL | INLCR | IGNBRK); t.c_oflag &= ~(OPOST); // be careful, only touch "known" flags /*t.c_cflag &= ~(CSIZE | CSTOPB | PARENB | PARODD | (false ? CRTSCTS : 0 )); t.c_cflag |= CS8 | CREAD | HUPCL | (false ? 0 : CRTSCTS) | CLOCAL;*/ t.c_cflag = B9600 | CS8 |CREAD | CLOCAL | HUPCL; t.c_lflag &= ~(ECHO | ECHOE | ECHOPRT | ECHOK | ECHOKE | ECHONL | ECHOCTL | ISIG | IEXTEN | TOSTOP | FLUSHO | ICANON); t.c_lflag |= NOFLSH; t.c_cc[VMIN] = 1; t.c_cc[VTIME] = 0; t.c_cc[VSUSP] = 0; // write back if(tcsetattr (fd, TCSANOW, &t) < 0) { perror("tcsetattr device"); return -1; } //throwModemException(stringPrintf(_("tcsetattr device '%s'"), // device.c_str())); // the waiting time for writing to the ME/TA is increased with each loop usleep(600000); // flush all pending input tcflush(fd, TCIFLUSH); fdFlags |= O_NONBLOCK; if (fcntl(fd, F_SETFL, fdFlags) == -1) { perror("switching of non-blocking faild"); return -1; //throwModemException(_("switching of non-blocking mode failed")); } // flush all pending output tcflush(fd, TCOFLUSH); }//else fd<=0 end return fd; } // end OpenAdrPort // writes zero terminated string to the serial port // return code: // >= 0 = number of characters written // -1 = write failed int WriteAdrPort(char* psOutput) { int iOut; if (fd < 1) { printf(" port is not open\n"); return -1; } // end if iOut = write(fd, psOutput, strlen(psOutput)); if (iOut < 0) { printf("write error %d %s\n", errno, strerror(errno)); } else { printf("wrote %d chars: %s\n", iOut, psOutput); } // end if return iOut; } // end WriteAdrPort // read string from the serial port // return code: // >= 0 = number of characters read // -1 = read failed int ReadAdrPort(char* psResponse, int iMax) { int iIn; printf("in ReadAdrPort iMax=%d\n", iMax); if (fd < 1) { printf(" port is not open\n"); return -1; } // end if strncpy (psResponse, "N/A", iMax<4?iMax:4); iIn = read(fd, psResponse, iMax-1); if (iIn < 0) { if (errno == EAGAIN) { return 0; // assume that command generated no response } else { printf("read error %d %s\n", errno, strerror(errno)); } // end if } else { psResponse[iIn<iMax?iIn:iMax] = '\0'; printf("read %d chars: %s\n", iIn, psResponse); } // end if return iIn; } // end ReadAdrPort // closes the serial port void CloseAdrPort() { // you may want to restore the saved port attributes if (fd > 0) { tcflush(fd, TCIOFLUSH); close(fd); } // end if } // end CloseAdrPort