這個(gè)類(lèi)把串口操作進(jìn)行封裝
#include
class COM //串口操作類(lèi)
{
//私有方法部分
protected:
HANDLE hCom; //串口句柄
COMMTIMEOUTS TimeOuts; //設(shè)置讀寫(xiě)超時(shí)
DCB dcb; //設(shè)置串口狀態(tài)結(jié)構(gòu)體
//公共方法部分
public:
COM(void);
~COM(void);
//以阻塞方式打開(kāi)一個(gè)串口參數(shù)依次為[串口號(hào)，波特率，校驗(yàn)標(biāo)記,停止位長(zhǎng)度]
int open(LPCTSTR com_name,DWORD com_bt,BYTE com_jy,BYTE com_sz,BYTE com_tz);
//關(guān)閉當(dāng)前串口
void close(void);
//從串口讀sz個(gè)字節(jié)到r_data
int read(LPVOID r_data,DWORD sz);
//從w_data發(fā)送sz個(gè)字節(jié)到串口
int write(LPCVOID w_data,DWORD sz);
};
#include "stdafx.h"
#include "串口操作類(lèi).h"
COM::COM()
{
}
COM::~COM()
{
//銷(xiāo)毀對(duì)象時(shí)先關(guān)閉串口
close();
}
int COM::open(LPCTSTR com_name,DWORD com_bt,BYTE com_jy,BYTE com_sz,BYTE com_tz)
{
//以阻塞方式打開(kāi)一個(gè)串口參數(shù)依次為[串口號(hào)，波特率，校驗(yàn)標(biāo)記,停止位長(zhǎng)度]
hCom=CreateFile(com_name,//COM1口
GENERIC_READ|GENERIC_WRITE, //允許讀和寫(xiě)
0, //獨(dú)占方式
NULL,
OPEN_EXISTING, //打開(kāi)而不是創(chuàng)建
0, //同步方式
NULL);
if(hCom==(HANDLE)-1)
{
printf("打開(kāi)%s失敗!\n",com_name);
return 0;
}
SetupComm(hCom,1024,1024); //輸入緩沖區(qū)和輸出緩沖區(qū)的大小都是1024
COMMTIMEOUTS TimeOuts;
//設(shè)定讀超時(shí)
TimeOuts.ReadIntervalTimeout=1000;
TimeOuts.ReadTotalTimeoutMultiplier=500;
TimeOuts.ReadTotalTimeoutConstant=5000;
//設(shè)定寫(xiě)超時(shí)
TimeOuts.WriteTotalTimeoutMultiplier=500;
TimeOuts.WriteTotalTimeoutConstant=5000;
SetCommTimeouts(hCom,&TimeOuts); //設(shè)置超時(shí)
GetCommState(hCom,&dcb); //獲取串口原始參數(shù)
dcb.BaudRate=com_bt; //設(shè)置波特率取值范圍是 CBR_110，CBR_300，CBR_600，CBR_1200，CBR_2400，CBR_4800，CBR_9600，CBR_19200， CBR_38400，CBR_56000， CBR_57600， CBR_115200， CBR_128000， CBR_256000， CBR_14400
dcb.ByteSize=com_sz; //設(shè)置通信字節(jié)位數(shù)取值范圍是 4到8
dcb.fParity=1; //允許奇偶校驗(yàn)檢查
dcb.Parity=com_jy; //設(shè)置奇偶校驗(yàn)位取值范圍是 EVENPARITY 偶校驗(yàn)，NOPARITY 無(wú)校驗(yàn) ，MARKPARITY 標(biāo)記校驗(yàn)，ODDPARITY 奇校驗(yàn)
dcb.StopBits=com_tz; //設(shè)置停止位取值范圍是 ONESTOPBIT 1位停止位 ，TWOSTOPBITS 2位停止位，ONE5STOPBITS 1.5位停止位
SetCommState(hCom,&dcb); //設(shè)置串口新的參數(shù)
PurgeComm(hCom,PURGE_TXCLEAR|PURGE_RXCLEAR);//操作串口前先清空緩沖區(qū)
printf("打開(kāi)%s成功!\n",com_name);
return 1;
}
void COM::close(void)
{
//關(guān)閉當(dāng)前串口
CloseHandle(hCom);
}
int COM::read(LPVOID r_data,DWORD sz)
{
//從串口讀sz個(gè)字節(jié)到r_data
DWORD wCount;//讀取的字節(jié)數(shù)
BOOL bReadStat;
bReadStat=ReadFile(hCom,r_data,sz,&wCount,NULL);
if(!bReadStat)
{
printf("讀串口失敗!\n");
PurgeComm(hCom, PURGE_TXABORT|
PURGE_RXABORT|PURGE_TXCLEAR|PURGE_RXCLEAR);
return 0;
}
if(wCount!=sz) return 0;
return 1;
}
int COM::write(LPCVOID w_data,DWORD sz)
{
//從w_data發(fā)送sz個(gè)字節(jié)到串口
BOOL bWriteStat;
DWORD dwBytesWrite;
bWriteStat=WriteFile(hCom,w_data,sz,&dwBytesWrite,NULL);
if(!bWriteStat)
{
printf("寫(xiě)串口失敗!\n");
PurgeComm(hCom, PURGE_TXABORT|
PURGE_RXABORT|PURGE_TXCLEAR|PURGE_RXCLEAR);
return 0;
}
if(dwBytesWrite!=sz) return 0;
return 1;
}這個(gè)類(lèi)對(duì)按鍵譯碼進(jìn)行封裝，鍵碼太多我只譯碼了26個(gè)字母按鍵，譯碼表這部分是個(gè)體力活大家可以根據(jù)實(shí)際使用情況來(lái)調(diào)整。
#include
class PS2
{
//私有方法部分
protected:
SYSTEMTIME TIME; //標(biāo)準(zhǔn)系統(tǒng)時(shí)間存放結(jié)構(gòu)體共8個(gè)成員16字節(jié)
int up; //按鍵釋放標(biāo)記
//公共方法部分
public:
PS2(void);
~PS2(void);
int PS2_ym(BYTE m); //譯碼函數(shù)通過(guò)一個(gè)按鍵碼來(lái)翻譯成WINDOWS鍵盤(pán)事件
};
#include "stdafx.h"
#include "PS2鍵盤(pán)譯碼.h"
BYTE key[26][2]={{0x1c,65},{0x32,66},{0x21,67},{0x23,68},{0x24,69},{0x2b,70},{0x34,71},{0x33,72},{0x43,73},{0x3b,74},{0x42,75},{0x4b,76},{0x3a,77},{0x31,78},{0x44,79},{0x4d,80},{0x15,81},{0x2d,82},{0x1b,83},{0x2c,84},{0x3c,85},{0x2a,86},{0x1d,87},{0x22,88},{0x35,89},{0x1a,90}}; //鍵碼表
char *key_name[]={"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};
PS2::PS2()
{
up=0;//釋放標(biāo)記清0
}
PS2::~PS2()
{
}
int PS2::PS2_ym(BYTE m)
{
//譯碼函數(shù)通過(guò)一個(gè)按鍵碼來(lái)翻譯成WINDOWS鍵盤(pán)事件
int i;
if(m==0xf0)
{
//有斷碼就做標(biāo)記
up=1;
return 0;
}else
{
if(up==0)
{
for(i=0;i<26;i++)
{
if(m==key[i][0])
{
keybd_event(key[i][1], 0, 0 ,0);
printf("按鍵%s按下！",key_name[i]);
GetLocalTime(&TIME);//獲得系統(tǒng)當(dāng)前時(shí)間
printf("事件觸發(fā)時(shí)間為：%d年%d月%d日%d時(shí)%d分%d秒\n",TIME.wYear,TIME.wMonth,TIME.wDay,TIME.wHour,TIME.wMinute,TIME.wSecond);
}
}
}else if(up==1)
{
for(i=0;i<26;i++)
{
if(m==key[i][0])
{
keybd_event(key[i][1], 0,KEYEVENTF_KEYUP,0);
printf("按鍵%s彈起！",key_name[i]);
GetLocalTime(&TIME);//獲得系統(tǒng)當(dāng)前時(shí)間
printf("事件觸發(fā)時(shí)間為：%d年%d月%d日%d時(shí)%d分%d秒\n",TIME.wYear,TIME.wMonth,TIME.wDay,TIME.wHour,TIME.wMinute,TIME.wSecond);
up=0; //鍵已經(jīng)釋放標(biāo)記清0
}
}
}
}
return 1;
}