Linux应用编程之串口操作20170901
2024-05-13 03:57:05
主要介绍在Linux应用程序下对串口的操作：
1.串口初始化
int InitCom()
{
int Ret;
Ret = SerailComm.OpenCom( ComPortDevPath, 0 );
if( Ret < 0 )
{
return Ret;
}
if(SerailComm.SetComSpeed( ComBaudRate ) < 0 )
{
SerailComm.CloseCom();
return Ret;
}
if(SerailComm.SetComParity(8, 1, 'N', 0, 0) < 0)
{
SerailComm.CloseCom();
return Ret;
}
Ret = SerailComm.SetComRawMode();
if( Ret < 0 )
{
SerailComm.CloseCom();
return Ret;
}
if( SerailComm.SetComSelectTimeOut(1, 0, READ_TIMEOUT_F) < 0 )
{
CloseCom();
return Ret;
}
if( SerailComm.SetComSelectTimeOut( 0, 500000, WRITE_TIMEOUT_F) < 0 )
{
SerailComm.CloseCom();
return Ret;
}
SerailComm.SetSerialCommBlock( 0 );
return 0;
}
2.读数据
int ReadCom()
{
char cRecvBuf[256];
int iBufSize = 256;
memset(cRecvBuf, 0, sizeof(cRecvBuf));
return SerailComm.ReadBinCom(cRecvBuf, iBufSize))
}
3.写数据
int WriteCom(u8 *WriteBuf, int Size)
{
return SerailComm.WriteBinCom((char*)WriteBuf, Size);
}
4.关闭串口
void CloseCom()
{
SerailComm.CloseCom();
}
5.附：上述使用到的串口类
1 #include "ComTransmit.h"
2 #include <assert.h>
3 #include <unistd.h>
4 #include <termios.h>
5 #include <ctype.h>
6 #include <errno.h>
7
8 #include "tracelevel.h"
9 #include "MdvrModulCom.h"
10
11 extern HANDLE_DVR g_hDvr;
12
13 pthread_mutex_t ComCommutex = PTHREAD_MUTEX_INITIALIZER;
14
15 //pthread_rwlock_t rwlock = PTHREAD_RWLOCK_INITIALIZER;
16
17 speedPara speed_atr[] =
18 {
19 {B300,300},
20 {B600,600},
21 {B1200,1200},
22 {B2400,2400},
23 {B4800,4800},
24 {B9600,9600},
25 {B19200,19200},
26 {B38400,38400},
27 {B57600,57600},
28 {B115200,115200} ,
29 {B230400,230400}
30 };
31
32 CComTransmit::CComTransmit():m_fp(NULL),m_fd(-1)
33 {
34 memset(&Rtimeout,0,sizeof(Rtimeout));
35 memset(&Wtimeout,0,sizeof(Wtimeout));
36 m_binit = 0;
37 }
38
39 CComTransmit::~CComTransmit()
40 {
41
42 }
43
44 int CComTransmit::OpenCom(const char * deviceName, int isMutex)
45 {
46 assert(deviceName != NULL);
47
48 if(m_binit == 1)
49 return 0;
50
51 m_fd = open(deviceName,O_RDWR);
52 if(m_fd < 0)
53 {
54 printf("Open Com [%s] failure! %s\n",deviceName, strerror(errno));
55 return -1;
56 }
57
58 printf("Open Com [%s] Sucess\n",deviceName);
59
60 m_fp = fdopen(m_fd, "r+b");
61 if(m_fp == NULL)
62 {
63 return -1;
64 }
65
66 m_binit = 1;
67 m_mutex_flag = isMutex;
68
69 return 0;
70 }
71
72 void CComTransmit::CloseCom()
73 {
74 int ret = close(m_fd);
75 if(ret < 0)
76 {
77 printf("close Com failure!\n");
78 }
79 m_fp = NULL;
80 m_binit = 0;
81 }
82
83 int CComTransmit::SetComSpeed(unsigned int speed)
84 {
85 int comspeed = 0;
86 int status = 0;
87 struct termios Opt;
88 int ret = -1;
89
90 for(unsigned int i = 0;i < sizeof(speed_atr)/sizeof(speedPara);i++)
91 {
92 if(speed == speed_atr[i].userSpeed)
93 {
94 comspeed = speed_atr[i].sysSpeed;
95 break;
96 }
97 }
98
99 if(!comspeed)
100 {
101 assert(comspeed != 0);
102 }
103
104 if(m_fd < 0)
105 {
106 return -1;
107 }
108 tcgetattr(m_fd, &Opt);
109 tcflush(m_fd, TCIOFLUSH);
110 ret = cfsetispeed(&Opt, comspeed);
111 if(ret < 0)
112 {
113 perror("set input speed error!\n");
114 return -1;
115 }
116
117 ret = cfsetospeed(&Opt, comspeed);
118 if(ret < 0)
119 {
120 perror("set output speed error!\n");
121 return -1;
122 }
123
124 status = tcsetattr(m_fd, TCSANOW, &Opt);
125 if(status != 0)
126 {
127 perror("tcsetattr fd1");
128 return -1;
129 }
130
131 tcflush(m_fd,TCIOFLUSH);
132 return 0;
133 }
134
135 int CComTransmit::SetComParity(int databits, int stopbits, int parity,int flowctrl, int Rs485)
136 {
137 struct termios options;
138
139 if(m_fd < 0)
140 {
141 return -1;
142 }
143
144 if ( tcgetattr( m_fd,&options) != 0)
145 {
146 printf("SetComParity 1");
147 return-1;
148 }
149
150 options.c_cflag &= ~CSIZE;
151 switch (databits) /*设置数据位数*/
152 {
153 case 5:
154 options.c_cflag |= CS5;
155 break;
156 case 6:
157 options.c_cflag |= CS6;
158 break;
159 case 7:
160 options.c_cflag |= CS7;
161 break;
162 case 8:
163 options.c_cflag |= CS8;
164 break;
165 default:
166 fprintf(stderr,"Unsupported data size\n");
167 return -1;
168 }
169 switch (parity)
170 {
171 case 'n':
172 case 'N':
173 case 0:
174 options.c_cflag &= ~PARENB; /* Clear parity enable */
175 options.c_iflag &= ~INPCK; /* Enable parity checking */
176 break;
177 case 'o':
178 case 'O':
179 case 1:
180 options.c_cflag |= (PARODD | PARENB); /* 设置为奇效验*/
181 options.c_iflag |= INPCK; /* Disnable parity checking */
182 break;
183 case 'e':
184 case 'E':
185 case 2:
186 options.c_cflag |= PARENB; /* Enable parity */
187 options.c_cflag &= ~PARODD; /* 转换为偶效验*/
188 options.c_iflag |= INPCK; /* Disnable parity checking */
189 break;
190 case 'S':
191 case 's': /*as no parity*/
192 options.c_cflag &= ~PARENB;
193 options.c_cflag &= ~CSTOPB;
194 break;
195 default:
196 fprintf(stderr,"Unsupported parity\n");
197 return -1;
198 }
199
200 /* 设置停止位*/
201 switch (stopbits)
202 {
203 case 1:
204 options.c_cflag &= ~CSTOPB;
205 break;
206 case 2:
207 options.c_cflag |= CSTOPB;
208 break;
209 default:
210 fprintf(stderr,"Unsupported stop bits\n");
211 return (-1);
212 }
213
214 switch(flowctrl) /* 设置流控制*/
215 {
216 case 0:
217 options.c_cflag &= ~CRTSCTS; /*no flow control*/
218 break;
219 case 1:
220 options.c_cflag |= CRTSCTS; /*hardware flow control*/
221 break;
222 case 2:
223 options.c_cflag |= IXON|IXOFF|IXANY; /*software flow control*/
224 break;
225 default:
226 options.c_cflag &= ~CRTSCTS; /*no flow control*/
227 break;
228 }
229 #if 0
230 if(Rs485)
231 {
232 options.c_cflag |= (0x00000001<<23);
233 }
234 else
235 {
236 options.c_cflag &= (~(0x00000001<<23));
237 }
238 #else
239
240 PRODUCT_INFO_ST productInfo;
241
242 EX_GetProductInfo(g_hDvr, &productInfo);
243 if((productInfo.productTypeID == MDVR_JH6S8_720P)||(productInfo.productTypeID == MDVR_JH6S4_720P))
244 {
245 if(Rs485)
246 {
247 options.c_cflag |= (0x00000001<<30);
248 }
249 else
250 {
251 options.c_cflag &= (~(0x00000001<<30));
252 }
253
254 }
255 #endif
256 /* Set input parity option */
257 if (parity != 'n')
258 options.c_iflag |= INPCK;
259
260 options.c_cc[VTIME] = 10; // 1 seconds
261 options.c_cc[VMIN] = 0;
262
263 tcflush(m_fd,TCIFLUSH); /* Update the options and do it NOW */
264 if (tcsetattr(m_fd,TCSANOW,&options) != 0)
265 {
266 perror("SetComParity 2");
267 return (-1);
268 }
269
270 return (0);
271 }
272
273 //0---read ,1--write
274 int CComTransmit::SetComSelectTimeOut(int sec,int usec,SELECT_TIMEOUT_F rwflag)
275 {
276 if(rwflag == WRITE_TIMEOUT_F)
277 {
278 Wtimeout.tv_sec = sec;
279 Wtimeout.tv_usec = usec;
280 }
281 else
282 {
283 Rtimeout.tv_sec = sec;
284 Rtimeout.tv_usec = usec;
285 }
286
287 return 0;
288 }
289
290 int CComTransmit::IOFlush()
291 {
292 tcflush(m_fd, TCIOFLUSH);
293 return 0;
294 }
295
296 int CComTransmit::SetComRawModeEx()
297 {
298 int ret = 0;
299 struct termios options;
300
301 tcgetattr(m_fd, &options);
302
303 tcflush(m_fd, TCIOFLUSH);
304 options.c_cflag &= ~CSIZE;
305 options.c_cflag |= CS8;
306 options.c_cflag &= ~PARENB;
307 options.c_cflag &= ~CSTOPB;
308 options.c_cflag &= ~CSTOPB;
309 options.c_oflag &= ~OPOST;
310
311 #if 0
312 printf("before iflag %x, lflag %x, oflag %x \n", options.c_iflag, options.c_lflag, options.c_oflag);
313
314 // options.c_lflag = 0 ;
315 // options.c_oflag = 0 ;
316 // options.c_iflag = 0;
317 options.c_lflag &= ~(ICANON |ISIG);
318 options.c_iflag &= ~(ICRNL|IGNCR);
319
320 //options.c_iflag |= (IGNBRK|BRKINT);
321 options.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
322
323 printf("iflag %x, lflag %x, oflag %x \n", options.c_iflag, options.c_lflag, options.c_oflag);
324
325 #endif
326
327 //|PARMRK|ISTRIP|IGNCR|ICRNL|IXON|INLCR
328 tcflush(m_fd, TCIFLUSH);
329 options.c_cc[VTIME] = 0; //128;
330 options.c_cc[VMIN] = 1;// 1;
331
332 cfmakeraw(&options);
333
334 ret = tcsetattr(m_fd,TCSANOW,&options);
335 if (ret < 0)
336 {
337 perror("set raw mode error!");
338 return ret;
339 }
340
341 return 0;
342 }
343
344 int CComTransmit::SetComRawMode()
345 {
346 int ret = 0;
347 struct termios options;
348
349 tcgetattr(m_fd, &options);
350
351 cfmakeraw(&options);
352 ret = tcsetattr(m_fd,TCSANOW,&options);
353 if (ret < 0)
354 {
355 perror("set raw mode error!");
356 }
357
358 return ret;
359 }
360
361 int CComTransmit::ReadCom(char *ReadBuffer,int size,int *retSize)
362 {
363 int retval = -1;
364
365 fd_set serial;
366 struct timeval rdtimeout;
367 *retSize = 0;
368 if(m_fd < 0)
369 {
370 fprintf(stderr,"%s[%d]:serial have not open!\n",__FILE__,__LINE__);
371 return -1;
372 }
373
374 FD_ZERO(&serial);
375 FD_SET(m_fd, &serial);
376 rdtimeout = Rtimeout;
377 #if 1
378
379 do{
380 retval = select(m_fd+1, &serial, NULL, NULL, &rdtimeout);
381 if(retval < 0)
382 {
383 if(errno == EINTR)
384 {
385 //printf("select Interruppter!\n");
386 }
387 else
388 {
389 break;
390 }
391 }
392 }while(retval == -1);
393
394 if(retval <= 0)
395 {
396 return -1;
397 }
398
399 //读数据写BUFFER
400 if(FD_ISSET(m_fd, &serial)!=0)
401 {
402 if(NULL != m_fp)
403 {
404 if(m_mutex_flag)
405 {
406 pthread_mutex_lock(&ComCommutex);
407 fgets(ReadBuffer, size, m_fp);
408 pthread_mutex_unlock(&ComCommutex);
409 }
410 else
411 {
412 fgets(ReadBuffer, size, m_fp);
413 }
414 *retSize = strlen(ReadBuffer);
415 }
416 }
417 return 0;
418 #else
419 if(m_fd > 0)
420 {
421 retval = read(m_fd, ReadBuffer, size);
422 }
423
424 if(retval > 0)
425 {
426 *retSize = retval;
427 }
428 else
429 {
430 *retSize = 0;
431 }
432
433 return retval;
434
435 #endif
436 }
437
438 int CComTransmit::ReadComEx( char *ReadBuffer,int size,int *retSize )
439 {
440 fd_set read_fds;
441 int retval;
442 struct timeval rdtimeout;
443
444 rdtimeout.tv_sec = Rtimeout.tv_sec;
445 rdtimeout.tv_usec = Rtimeout.tv_usec;
446
447 if(m_fd < 0)
448 {
449 fprintf(stderr,"%s[%d]:serial have not open!\n",__FILE__,__LINE__);
450 return -1;
451 }
452
453 FD_ZERO(&read_fds);
454 FD_SET(m_fd, &read_fds);
455
456 retval = select(m_fd + 1, &read_fds, NULL, NULL, &rdtimeout);
457 if( retval <= 0 )
458 {
459 return -1;
460 }
461
462 if ( !FD_ISSET(m_fd, &read_fds) )
463 {
464 //printf("Serail Com[%s] read time out[%d]\n", m_SerialPath, time_out);
465 return -1;
466 }
467
468 retval = read(m_fd, ReadBuffer, size);
469 *retSize = retval;
470
471 if(*retSize < 0)
472 {
473 return -1;
474 }
475
476 return 0;
477 }
478
479
480 /*
481 *函数功能:读取串口binary数据
482 *创建作者:freeman on 2010/0818
483 */
484 int CComTransmit::ReadBinCom(char *ReadBuffer,int size)
485 {
486 int retval = -1;
487
488 #if 0
489
490 fd_set serial;
491 struct timeval rdtimeout;
492
493 if(m_fd < 0)
494 {
495 fprintf(stderr,"%s[%d]:serial have not open!\n",__FILE__,__LINE__);
496 return -1;
497 }
498
499 FD_ZERO(&serial);
500 FD_SET(m_fd, &serial);
501 rdtimeout = Rtimeout;
502
503 do{
504 retval = select(m_fd+1, &serial, NULL, NULL, &rdtimeout);
505 if(retval < 0)
506 {
507 if(errno == EINTR)
508 {
509 //printf("select Interruppter!\n");
510 }
511 else
512 {
513 break;
514 }
515 }
516 }while(retval == -1);
517
518 if(retval <= 0)
519 {
520 return -1;
521 }
522
523 //读数据写BUFFER
524 if(FD_ISSET(m_fd,&serial)!=0)
525 {
526 if(NULL != m_fp)
527 {
528 return read(m_fd,ReadBuffer,size);
529 }
530 }
531 return 0;
532
533 #else
534
535 if(m_fd > 0)
536 {
537 retval = read(m_fd, ReadBuffer, size);
538 }
539 else
540 {
541 TRACE_NET(ERR,"ReadBinCom ERR:%d\n",m_fd);
542 }
543 return retval;
544
545 #endif
546 }
547
548
549 int CComTransmit::WriteCom(char *WriteBuffer,int size)
550 {
551 int ret = -1;
552 #if 1
553 fd_set serial;
554 int retval =0;
555 struct timeval WTtimeout;
556
557 if(m_fd < 0)
558 {
559 TRACE_NET(ERR, "---serial have not open!\n");
560 return -1;
561 }
562
563 // printf("Snd Com %s \n", WriteBuffer);
564
565 FD_ZERO(&serial);
566 FD_SET(m_fd, &serial);
567 WTtimeout = Wtimeout;
568 if ((retval = select(m_fd+1, NULL, &serial, NULL, &WTtimeout)) < 0)
569 {
570 TRACE_NET(ERR, "select error! ---- \n");
571 return -1;
572 }
573
574 if(retval == 0)
575 {
576 TRACE_NET(ERR, "select timeout! ---- \n");
577 return -1;
578 }
579
580 //读数据写BUFFER
581 if(FD_ISSET(m_fd,&serial)!=0)
582 {
583 pthread_mutex_lock(&ComCommutex);
584 ret = write(m_fd, WriteBuffer ,size);
585 pthread_mutex_unlock(&ComCommutex);
586
587 if(ret == -1)
588 {
589 TRACE_NET(ERR, "serial send data failed -----!\n");
590 return -1;
591 }
592 }
593
594 return ret;
595 #else
596 ret = write(m_fd, WriteBuffer ,size);
597 // printf("Send cmd %d \n", ret);
598 if(ret == -1)
599 {
600 printf("serial send data failed -----error!\n");
601 return -1;
602 }
603 return ret;
604
605 #endif
606 }
607
608 int CComTransmit::WriteBinCom(char *WriteBuffer,int size)
609 {
610 int ret = -1;
611 #if 0
612 fd_set serial;
613 int retval =0;
614 struct timeval WTtimeout;
615
616 if(m_fd < 0)
617 {
618 fprintf(stderr,"%s:%d---serial have not open!\n", __FILE__, __LINE__);
619 return -1;
620 }
621
622 // printf("Snd Com %s \n", WriteBuffer);
623
624 FD_ZERO(&serial);
625 FD_SET(m_fd, &serial);
626 WTtimeout = Wtimeout;
627 if ((retval = select(m_fd+1, NULL, &serial, NULL, &WTtimeout)) < 0)
628 {
629 fprintf(stderr,"%s[%d]:select error!---------------\n",__FILE__,__LINE__);
630 return -1;
631 }
632
633 if(retval == 0)
634 {
635 fprintf(stderr,"%s[%d]:select timeout!---------------\n",__FILE__,__LINE__);
636 return -1;
637 }
638
639 //读数据写BUFFER
640 if(FD_ISSET(m_fd,&serial)!=0)
641 {
642 pthread_mutex_lock(&Commutex);
643 ret = write(m_fd, WriteBuffer ,size);
644 pthread_mutex_unlock(&Commutex);
645
646 if(ret == -1)
647 {
648 printf("serial send data failed -----error!\n");
649 return -1;
650 }
651 }
652
653 return ret;
654 #else
655 if(m_fd > 0)
656 ret = write(m_fd, WriteBuffer ,size);
657 // printf("Send cmd %d \n", ret);
658 if(ret == -1)
659 {
660 TRACE_NET(ERR, "serial send data failed -----!\n");
661 return -1;
662 }
663
664 return ret;
665 #endif
666 }
667
668
669 int CComTransmit::GetPortFD()
670 {
671 return m_fd;
672 }
673
674 FILE* CComTransmit::GetPortFP()
675 {
676 return m_fp;
677 }
678
679 void CComTransmit::SetSerialCommBlock(int isBlock)
680 {
681 int nFlags = fcntl(m_fd, F_GETFL, 0);
682
683 if(isBlock)
684 {
685 fcntl(m_fd, F_SETFL, 0);
686 }
687 else
688 {
689 fcntl(m_fd, F_SETFL, nFlags|O_NONBLOCK);
690 }
691 }
692
693
694 int CComTransmit::ReadComWithBuf(char *ReadBuffer,int size,int *retSize)
695 {
696 fd_set serial;
697 int retval;
698 struct timeval rdtimeout;
699 *retSize = 0;
700 int left = 0;
701 int recvlen = 0;
702
703 if(m_fd < 0)
704 {
705 fprintf(stderr,"%s[%d]:serial have not open!\n",__FILE__,__LINE__);
706 return -1;
707 }
708
709 for(int i = 0;i < size - 1 && i < m_len;i++)
710 {
711 ReadBuffer[i] = m_buf[i];
712 if(m_buf[i] == '\n')
713 {
714 ReadBuffer[i+1] = 0;
715 memmove(m_buf,&m_buf[i+1],m_len-(i+1));
716 m_len -= (i+1);
717 *retSize = i+1;
718 return *retSize;
719 }
720 }
721
722 FD_ZERO(&serial);
723 FD_SET(m_fd, &serial);
724 rdtimeout = Rtimeout;
725
726 do{
727 retval = select(m_fd+1, &serial, NULL, NULL, &rdtimeout);
728 if(retval < 0)
729 {
730 if(errno == EINTR)
731 {
732 //printf("select Interruppter!\n");
733 }
734 else
735 {
736 break;
737 }
738 }
739 }while(retval == -1);
740
741 if(retval <= 0)
742 {
743 return -1;
744 }
745
746 //读数据写BUFFER
747 if(FD_ISSET(m_fd,&serial)!=0)
748 {
749 if(NULL != m_fp)
750 {
751 left = SERIAL_BUF_LEN - m_len;
752 if(left > 0)
753 {
754 recvlen = read(m_fd,&m_buf[m_len],left);
755 if(recvlen > 0)
756 {
757 m_len += recvlen;
758 }
759 }
760 else
761 {
762 // WRITE_DBG_LOG("串口接收数据512字节内没有换行符号");
763 m_buf[m_len-1] = 0;
764 // WRITE_DBG_LOG("%s",m_buf);
765 m_len = 0;
766 left = SERIAL_BUF_LEN;
767 recvlen = read(m_fd,&m_buf[m_len],left);
768 if(recvlen > 0)
769 {
770 m_len += recvlen;
771 }
772 }
773
774 for(int i = 0;i < size - 1 && i < m_len;i++)
775 {
776 ReadBuffer[i] = m_buf[i];
777 if(m_buf[i] == '\n')
778 {
779 ReadBuffer[i+1] = 0;
780 memmove(m_buf,&m_buf[i+1],m_len-(i+1));
781 m_len -= (i+1);
782 *retSize = i+1;
783 return *retSize;
784 }
785 }
786 }
787 }
788
789 return -1;
790 }CComTransmit.cpp
1 #ifndef _COM_TRANSMIT_H_
2 #define _COM_TRANSMIT_H_
3
4 #include <string.h>
5 #include <pthread.h>
6 #include <fcntl.h>
7 #include <stdio.h>
8 #include <stdlib.h>
9
10 #define SERIAL_BUF_LEN 512
11
12 typedef struct {
13 unsigned long baudrate; /*波特率*/
14 unsigned char databit; /*数据位，取值5、6、7、8*/
15 unsigned char parity; /*奇偶校验位，取值'n':无校验'o':奇校验'e'偶校验*/
16 unsigned char stopbit; /*停止位，取值1,2*/
17 unsigned char reserve; /*保留字节*/
18 }Terminal;
19
20 typedef struct
21 {
22 int sysSpeed;
23 unsigned long userSpeed;
24 }speedPara;
25
26 typedef enum
27 {
28 READ_TIMEOUT_F = 0,
29 WRITE_TIMEOUT_F
30 }SELECT_TIMEOUT_F;
31
32 class CComTransmit
33 {
34 private:
35 //
36 FILE *m_fp;
37 int m_fd;
38 int m_mutex_flag;
39 struct timeval Rtimeout;
40 struct timeval Wtimeout;
41 int m_binit;
42 char m_buf[SERIAL_BUF_LEN];
43 int m_len;
44
45 public:
46 //
47 CComTransmit();
48 ~CComTransmit();
49 int OpenCom(const char *deviceName, int isMutex = 1);
50 void CloseCom();
51 int SetComSpeed(unsigned int speed);
52 int SetComParity(int databits, int stopbits, int parity,int flowctrl, int Rs485);
53 int SetComRawMode();
54 int SetComRawModeEx();
55 int SetComSelectTimeOut(int sec,int usec,SELECT_TIMEOUT_F RWflag);//0--read,1--wirte
56 int IOFlush();
57 int ReadCom(char *ReadBuffer,int size,int *retSize);
58 int ReadComEx( char *ReadBuffer,int size,int *retSize );
59 int ReadBinCom(char *ReadBuffer,int size);
60 int WriteCom(char *WriteBuffer,int size);
61 int WriteBinCom(char *WriteBuffer,int size);
62
63 int GetPortFD();
64 FILE* GetPortFP();
65 void SetSerialCommBlock(int isBlock);
66 int ReadComWithBuf(char *ReadBuffer,int size,int *retSize);
67
68
69 protected:
70 //
71 };
72
73 #endif//_COM_TRANSMIT_H_CComTransmit.h
转载于:https://www.cnblogs.com/yuweifeng/p/7464836.html
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