直接上代码：
1 // 串口驱动卸载/加载 COM13 2 BOOL UnloadDeviceDriver(CString csDeviceName) 3 { 4 BOOL bRet = FALSE; 5 HANDLE hFind = INVALID_HANDLE_VALUE; 6 if(csDeviceName.IsEmpty()) 7 { 8 return FALSE; 9 } 10 DevicedeviceType deviceType; 11 if(CString(csDeviceName.Right(1)) == _T(":")) 12 { 13 deviceType = DeviceSearchByLegacyName; 14 } 15 else 16 { 17 deviceType = DeviceSearchByDeviceName; 18 } 19 DEVMGR_DEVICE_INFORMATION devInfo = {0}; 20 devInfo.dwSize = sizeof(devInfo); 21 hFind = FindFirstDevice(deviceType,(LPCVOID)csDeviceName.GetBuffer(),&devInfo); 22 if(hFind == INVALID_HANDLE_VALUE) 23 { 24 return FALSE; 25 } 26 bRet = DeactivateDevice(devInfo.hDevice); 27 FindClose(hFind); 28 return bRet; 29 } 30 BOOL LoadDeviceDriver(CString csDeviceName) 31 { 32 DWORD dwParam = 89; 33 // ActivateDeviceEx(L"\Drivers\BuiltIn\Serial3",NULL,0,&dwParam); 34 HANDLE hHd = ActivateDeviceEx(str.GetBuffer(),NULL,0,&dwParam); 35 if(NULL == hHd) 36 { 37 DWORD dwError = GetLastError(); 38 printf("LoadDeviceDriver Error : %d",dwError); 39 } 40 } 41 // 电源控制 42 #define VIDEOFUNDEVNAME L"fun1:" 43 #define SOFTI2C_IOCTL_TESTPIN 20 44 #define GSM_POWER_CONTROL_BY_MCU 0 45 BOOL GSM_Power_On(void) 46 { 47 BOOL bRet; 48 BYTE ucPara[3]; 49 HANDLE hFun1 = INVALID_HANDLE_VALUE; 50 ucPara[0] = 1; 51 ucPara[1] = 0; 52 ucPara[2] = 14; 53 hFun1 = CreateFile(VIDEOFUNDEVNAME, GENERIC_WRITE|GENERIC_READ, 0, NULL, 0, 0, NULL); 54 if(INVALID_HANDLE_VALUE == hFun1) 55 { 56 return FALSE; 57 } 58 bRet = DeviceIoControl(hFun1, SOFTI2C_IOCTL_TESTPIN, ucPara, 3, NULL, 0, NULL, NULL); 59 if(!bRet) 60 { 61 RETAILMSG(1,(L"[Power_On]Device IO control failed: %d ",GetLastError())); 62 } 63 CloseHandle(hFun1); 64 hFun1 = INVALID_HANDLE_VALUE; 65 RETAILMSG(1,(L" open Gprs Power ")); 66 return bRet; 67 } 68 BOOL GSM_Power_Off(void) 69 { 70 BOOL bRet; 71 BYTE ucPara[3]; 72 HANDLE hFun1 = INVALID_HANDLE_VALUE; 73 ucPara[0] = 0; 74 ucPara[1] = 0; 75 ucPara[2] = 14; 76 hFun1 = CreateFile(VIDEOFUNDEVNAME, GENERIC_WRITE|GENERIC_READ, 0, NULL, 0, 0, NULL); 77 if(INVALID_HANDLE_VALUE == hFun1) 78 { 79 return FALSE; 80 } 81 bRet = DeviceIoControl(hFun1, SOFTI2C_IOCTL_TESTPIN, ucPara, 3, NULL, 0, NULL, NULL); 82 if(!bRet) 83 { 84 RETAILMSG(1,(L"[Power_Off]Device IO control failed: %d ",GetLastError())); 85 } 86 CloseHandle(hFun1); 87 hFun1 = INVALID_HANDLE_VALUE; 88 RETAILMSG(1,(L" close Gprs Power ")); 89 return bRet; 90 }