?? text2.cpp
字號(hào):
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/select.h>
#include <sys/shm.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include "MyCom.h"
#include <termios.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/file.h> /* flock(int fd,int operation)函數(shù) */
using namespace std;
const char *MyCom::Serial_Ctl_No[MAX_COMS] =
{
"/dev/wfet1000com0",
"/dev/wfet1000com1",
"/dev/wfet1000com2",
"/dev/nothing4",
"/dev/nothing5",
"/dev/nothing6"
};
MyCom::MyCom() {
if(!CreateSem( COM2 ))
{
}
}
MyCom::MyCom(enum COM_NO com)
{
if(!CreateSem( com ))
{
}
}
MyCom::MyCom(BYTE com)
{
enum COM_NO com_no;
AttachComNo( com , com_no);
if(!CreateSem( com_no ))
{
}
}
bool MyCom::CreateSem(enum COM_NO com)
{
union semun sem_union;
sem_id = semget( (key_t)(SEM_KEY_COM + com), 1, 0666 | IPC_CREAT );
cur_serial_num = com;
serial_ctrl_no = 0;
if( !AttachSem( 0 ) )
return false;
if(com_buf[0] == 1 || com_buf[0] == 2 || com_buf[0] == 3)
{//串行口的讀寫控制1：自動(dòng)；2、3、非自動(dòng)；2：讀、3：寫。表示串行口的信號(hào)量已初始化
m_port_status = com_buf[0];
return true;
}
com_buf[0] = 1;
m_port_status = 1; //系統(tǒng)默認(rèn)為自動(dòng)收發(fā)
sem_union.val=1;
if(semctl(sem_id, 0, SETVAL, sem_union )==-1) {
return false;
}
return true;
}
bool MyCom::OpenCtrl()
{
// if( m_port_status == com_buf[0] ) return true;//系統(tǒng)的收發(fā)控制狀態(tài)一致、不用再控制
if( serial_ctrl_no <= 0)
{
serial_ctrl_no = open(Serial_Ctl_No[ cur_serial_num ], O_WRONLY | O_NOCTTY);
}
return (serial_ctrl_no > 0)? true : false;
}
bool MyCom::CloseCtrl()
{
if (serial_ctrl_no > 0)
{
close(serial_ctrl_no);
serial_ctrl_no = 0;
}
return true;
}
bool MyCom::SetPortState(enum PORT_STATE m_status)//TRUE 表示發(fā)送， FALSE 為接收
{
if( m_port_status == com_buf[0] ) return true;//系統(tǒng)的收發(fā)控制狀態(tài)一致、不用再控制
OpenCtrl();
unsigned char str[2];
switch(m_status)
{
case STATUS_READ:
str[0] = 0x00;
str[1] = 0x00;
break;
case STATUS_WRITE:
str[0] = 0x01;
str[1] = 0x00;
break;
case STATUS_AUTO:
default:
str[0] = 0x00;
str[1] = 0x01;
break;
}
if(serial_ctrl_no <= 0) return false;
if (write(serial_ctrl_no,str,2) <0 )
{
CloseCtrl();
return false;
}
CloseCtrl();
com_buf[0] = (BYTE)m_status;
m_port_status = com_buf[0];
return true;
}
bool MyCom::AttachSem(int flag)
{
com_id=shmget( (key_t)MEM_KEY_COM + cur_serial_num, sizeof(BYTE), 0666 | IPC_CREAT );
if ( com_id ==-1 ) {
return false;
}
com_addr = shmat(com_id, NULL, flag );
if (com_addr == (void *)-1 ) {
return false;
}
com_buf = (BYTE *) com_addr;
return true;
}
void MyCom::Init_Serial(METERCOMPARA com_para)
{
switch( (int)com_para.baudrate ) {//
case 1:
cur_baudrate = B300;
break;
case 2:
cur_baudrate = B600;
break;
case 4:
cur_baudrate = B1200;
break;
case 8:
cur_baudrate = B2400;
break;
case 16:
cur_baudrate = B4800;
break;
case 32:
cur_baudrate = B9600;
break;
default:
cur_baudrate = B9600;
break;
}
switch( (int)com_para.bytesize ) {//COM_BYTESIZE5 = 5,COM_BYTESIZE6 = 6,COM_BYTESIZE7 = 7,COM_BYTESIZE8 = 8
case 5:
cur_bytesize = COM_BYTESIZE5 ;
break;
case 6:
cur_bytesize = COM_BYTESIZE6 ;
break;
case 7:
cur_bytesize = COM_BYTESIZE7 ;
break;
case 8:
cur_bytesize = COM_BYTESIZE8 ;
break;
default:
cur_bytesize = COM_BYTESIZE8 ;
break;
}
switch( (int)com_para.parity ) {// PARITY_ODD=0, PARITY_EVEN=1, PARITY_NONE=2
case 0:
cur_parity = PARITY_NONE;
break;
case 1:
cur_parity = PARITY_EVEN;
break;
case 2:
cur_parity = PARITY_ODD;
break;
default:
cur_parity = PARITY_EVEN;
break;
}
switch( (int)com_para.stopbits ) {
case 0:
cur_stopbits = COM_STOPBITS1;
break;
case 1:
cur_stopbits = COM_STOPBITS15;
break;
case 2:
cur_stopbits = COM_STOPBITS2;
default:
cur_stopbits = COM_STOPBITS1;
break;
}
cur_sync_mode = COM_BLOCK ;
//SerialCom::serial_sync_mode(COM_BLOCK);
}
bool MyCom::sem_serial_open() {
if(! sem_P()) {
return false;
}
if(!serial_open()) {
// sem_V();
sem_serial_close();
return false;
}
// OpenCtrl();
return true;
}
void MyCom::sem_serial_close() {
// CloseCtrl();
serial_close() ;
sem_V();
}
bool MyCom::wait_for_response(int sec_time)
{
static fd_set readfs;
static struct timeval timeout;
timeout.tv_usec = 0;
timeout.tv_sec = sec_time; /* 設(shè)定超時(shí)時(shí)間為sec_time秒 */
// SetPortState( STATUS_READ ); //設(shè)置為讀狀態(tài)
FD_ZERO(&readfs);
FD_SET(serial_fd, &readfs);
/* 等待數(shù)據(jù)返回并判斷是否超時(shí) */
if (select(serial_fd+1, &readfs, NULL, NULL, &timeout) <= 0) {
return false;
}
/* 讀句柄集合里是否是fd句柄來(lái)數(shù)據(jù) */
if (FD_ISSET(serial_fd, &readfs) <= 0) {
tcflush(serial_fd, TCIOFLUSH);
return false;
}
return true;
}
bool MyCom::change_port(enum COM_NO com) //改變對(duì)象使用端口
{
SerialCom::change_port( com );
if(!CreateSem( com ))
{
return false;
}
return true;
}
//信號(hào)量P操作
bool MyCom::sem_P() {
struct sembuf sem_b;
if( sem_id==-1 ) {
return false;
}
sem_b.sem_num = 0;
sem_b.sem_op = -1; /*p()*/
sem_b.sem_flg = SEM_UNDO;
if( semop(sem_id, &sem_b, 1) == -1 ) {
return false;
}
return true;
}
//信號(hào)量V操作
bool MyCom::sem_V() {
struct sembuf sem_b;
if( sem_id==-1 ) {
return false;
}
sem_b.sem_num = 0;
sem_b.sem_op = 1; /*v()*/
sem_b.sem_flg = SEM_UNDO;
if( semop(sem_id, &sem_b, 1) == -1 ) {
return false;
}
return true;
}
//銷毀信號(hào)量對(duì)象
void MyCom::DestroySem() {
// shmctl( com_id, IPC_RMID, 0 );
// CloseCtrl();
if (com_addr == (void *) -1 ) {
return;
}
shmdt(com_addr);
// semctl( sem_id, 0, IPC_RMID);
}
int MyCom::serial_read(unsigned char * buf, int len)
{
return SerialCom::serial_read( buf, len);
}
int MyCom::serial_write(unsigned char * buf, int len)
{
SetPortState( STATUS_WRITE );
int Len = SerialCom::serial_write( buf, len);
SetPortState( STATUS_READ );
return Len;
}
bool MyCom::AttachComNo(BYTE com_no,enum COM_NO &com)
{
switch(com_no)
{
case 0:
com = COM1;
break;
case 1:
com = COM2;
break;
case 2:
com = COM3;
break;
case 3:
com = COM4;
break;
case 4:
com = COM5;
break;
case 5:
com = COM6;
break;
case 6:
com = COM7;
break;
case 7:
com = COM8;
break;
default:
com = COM2;
return false;
}
return true;
}
bool MyCom::change_port(BYTE com)
{
enum COM_NO com_no;
if(!AttachComNo( com, com_no))//bool AttachComNo(BYTE com_no,enum COM_NO &com);
return false;
return change_port( com_no );
}
?? 快捷鍵說(shuō)明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號(hào)
Ctrl + =
減小字號(hào)
Ctrl + -