ForceIPEx.cpp

Force reset camera IP address.

The sample code below shows how to force reset the port camera IP address, that is, reconnecting and re-enumerating after power-off.。

#include <stdio.h>
#include <Windows.h>
#include <process.h>
#include <conio.h>
#include "MvCameraControl.h"
#pragma comment(lib, "wsock32.lib")

#define PERSISTENT_CONFIG_REG 0x0014
#define PERSISTENT_IPADDR_REG 0x064C
#define PERSISTENT_SUBNETMASK_REG 0x065C
#define PERSISTENT_DEFAULTGATEWAY_REG 0x066C

bool WritesToRegisters(char* chSerialNumber, unsigned int nIpAddr, unsigned int nNetWorkMask, unsigned int nDefaultGateway);

// Wait for a pressed key
void WaitForKeyPress(void)
{
    while(!_kbhit())
    {
        Sleep(10);
    }
    _getch();
}

bool PrintDeviceInfo(MV_CC_DEVICE_INFO* pstMVDevInfo)
{
    if (NULL == pstMVDevInfo)
    {
        printf("The Pointer of pstMVDevInfo is NULL!\n");
        return false;
    }
    if (pstMVDevInfo->nTLayerType == MV_GIGE_DEVICE)
    {
        int nIp1 = ((pstMVDevInfo->SpecialInfo.stGigEInfo.nCurrentIp & 0xff000000) >> 24);
        int nIp2 = ((pstMVDevInfo->SpecialInfo.stGigEInfo.nCurrentIp & 0x00ff0000) >> 16);
        int nIp3 = ((pstMVDevInfo->SpecialInfo.stGigEInfo.nCurrentIp & 0x0000ff00) >> 8);
        int nIp4 = (pstMVDevInfo->SpecialInfo.stGigEInfo.nCurrentIp & 0x000000ff);

        // Print current camera IP and user-defined name
        printf("CurrentIp: %d.%d.%d.%d\n" , nIp1, nIp2, nIp3, nIp4);
        printf("UserDefinedName: %s\n\n" , pstMVDevInfo->SpecialInfo.stGigEInfo.chUserDefinedName);
    }
    else if (pstMVDevInfo->nTLayerType == MV_USB_DEVICE)
    {
        printf("UserDefinedName: %s\n", pstMVDevInfo->SpecialInfo.stUsb3VInfo.chUserDefinedName);
        printf("Serial Number: %s\n", pstMVDevInfo->SpecialInfo.stUsb3VInfo.chSerialNumber);
        printf("Device Number: %d\n\n", pstMVDevInfo->SpecialInfo.stUsb3VInfo.nDeviceNumber);
    }
    else
    {
        printf("Not support.\n");
    }

    return true;
}

// Function for IP address conversion
bool ConvertToHexIp(unsigned int *nHexIP, unsigned int *nDecIP, char c)
{
    if ( nDecIP[0] < 0 || nDecIP[0] > 255
        || nDecIP[1] < 0 || nDecIP[1] > 255
        || nDecIP[2] < 0 || nDecIP[2] > 255
        || nDecIP[3] < 0 || nDecIP[3] > 255
        || c != '\n')
    {
        return false;
    }
    *nHexIP = (nDecIP[0] << 24) + (nDecIP[1] << 16) + (nDecIP[2] << 8) + nDecIP[3];

    return true;
}
int main()
{
    int nRet = MV_OK;
    void* handle = NULL;
    unsigned int nIP[4] = {0};
    char c = '\0';
    unsigned int nIpAddr = 0, nNetWorkMask = 0, nDefaultGateway = 0;
    do 
    {
        // Initialize SDK
        nRet = MV_CC_Initialize();
        if (MV_OK != nRet)
        {
            printf("Initialize SDK fail! nRet [0x%x]\n", nRet);
            break;
        }

        // Enumerate devices
        MV_CC_DEVICE_INFO_LIST stDeviceList;
        memset(&stDeviceList, 0, sizeof(MV_CC_DEVICE_INFO_LIST));
        nRet = MV_CC_EnumDevices(MV_GIGE_DEVICE | MV_USB_DEVICE, &stDeviceList);
        if (MV_OK != nRet)
        {
            printf("Enum Devices fail! nRet [0x%x]\n", nRet);
            break;
        }

        if (stDeviceList.nDeviceNum > 0)
        {
            for (unsigned int i = 0; i < stDeviceList.nDeviceNum; i++)
            {
                printf("[device %d]:\n", i);
                MV_CC_DEVICE_INFO* pDeviceInfo = stDeviceList.pDeviceInfo[i];
                if (NULL == pDeviceInfo)
                {
                    break;
                } 
                PrintDeviceInfo(pDeviceInfo);            
            }  
        } 
        else
        {
            printf("Find No Devices!\n");
            break;
        }

        printf("Please Input camera index(0-%d):", stDeviceList.nDeviceNum-1);
        unsigned int nIndex = 0;
        scanf_s("%d", &nIndex);

        if (nIndex >= stDeviceList.nDeviceNum)
        {
            printf("Input error!\n");
            break;
        }

        // Select device, and create handle
        nRet = MV_CC_CreateHandle(&handle, stDeviceList.pDeviceInfo[nIndex]);
        if (MV_OK != nRet)
        {
            printf("Create Handle fail! nRet [0x%x]\n", nRet);
            break;
        }


        // Record the serial No. for the first time
        char chSerialNumber[16] = {0};
        memcpy(chSerialNumber, stDeviceList.pDeviceInfo[nIndex]->SpecialInfo.stGigEInfo.chSerialNumber, sizeof(stDeviceList.pDeviceInfo[nIndex]->SpecialInfo.stGigEInfo.chSerialNumber));
        printf("serial number:[%s]\n", chSerialNumber);


        // Enter IP address, subnet mask, and default gateway
        printf("Please input ip, example: 192.168.1.100\n");

        if ( 5 != scanf("%d.%d.%d.%d%c", &nIP[0], &nIP[1], &nIP[2], &nIP[3], &c) )
        {
            printf("input count error\n");
            break;
        }
        if (!ConvertToHexIp(&nIpAddr, nIP, c))
        {
            printf("input IpAddr format is not correct\n");
            break;
        }

        printf("Please input NetMask, example: 255.255.255.0\n");
        if ( 5 != scanf("%d.%d.%d.%d%c", &nIP[0], &nIP[1], &nIP[2], &nIP[3], &c) )
        {
            printf("input count error\n");
            break;
        }
        if (!ConvertToHexIp(&nNetWorkMask, nIP, c))
        {
            printf("input NetMask format is not correct\n");
            break;
        }

        printf("Please input DefaultWay, example: 192.168.1.1\n");
        if ( 5 != scanf("%d.%d.%d.%d%c", &nIP[0], &nIP[1], &nIP[2], &nIP[3], &c) )
        {
            printf("input count error\n");
            break;
        }
        if (!ConvertToHexIp(&nDefaultGateway, nIP, c))
        {
            printf("input DefaultWay format is not correct\n");
            break;
        }


        // Determine if the deivce IP address is accessible
        bool bAccessible = MV_CC_IsDeviceAccessible(stDeviceList.pDeviceInfo[nIndex], MV_ACCESS_Exclusive);
        if(bAccessible)
        {
            // Set IP configuration options
            nRet = MV_GIGE_SetIpConfig(handle, MV_IP_CFG_STATIC);
            if (MV_OK != nRet)
            {
                printf("MV_GIGE_SetIpConfig fail! nRet [%x]\n", nRet);
                break;
            }
            printf("set IPConfig succeed\n");

            // Set force IP address
            nRet = MV_GIGE_ForceIpEx(handle, nIpAddr, nNetWorkMask, nDefaultGateway);
            if (MV_OK != nRet)
            {   
                printf("MV_GIGE_ForceIpEx fail! nRet [%x]\n", nRet);
                break;
            }
            printf("set IP succeed\n");
        }
        else
        {
            // Set force IP address
            nRet = MV_GIGE_ForceIpEx(handle, nIpAddr, nNetWorkMask, nDefaultGateway);
            if (MV_OK != nRet)
            {   
                printf("MV_GIGE_ForceIpEx fail! nRet [%x]\n", nRet);
                break;
            }
            printf("set IP succeed\n");

            MV_CC_DestroyHandle(handle);
            handle = NULL;

            // Re-create the handle and set it to static IP for storage
            stDeviceList.pDeviceInfo[nIndex]->SpecialInfo.stGigEInfo.nCurrentIp = nIpAddr;
            stDeviceList.pDeviceInfo[nIndex]->SpecialInfo.stGigEInfo.nCurrentSubNetMask = nNetWorkMask;
            stDeviceList.pDeviceInfo[nIndex]->SpecialInfo.stGigEInfo.nDefultGateWay = nDefaultGateway;
            nRet = MV_CC_CreateHandle(&handle, stDeviceList.pDeviceInfo[nIndex]);
            if (MV_OK != nRet)
            {
                printf("MV_CC_CreateHandle fail! nRet [%x]\n", nRet);
                break;
            }
            // Set IP configuration options
            nRet = MV_GIGE_SetIpConfig(handle, MV_IP_CFG_STATIC);
            if (MV_OK != nRet)
            {
                printf("MV_GIGE_SetIpConfig fail! nRet [%x]\n", nRet);
                break;
            }
            printf("set IPConfig succeed\n");
        }
        // Destroy handle
        nRet = MV_CC_DestroyHandle(handle);
        if (MV_OK != nRet)
        {
            printf("Destroy Handle fail! nRet [0x%x]\n", nRet);
            break;
        }
        handle = NULL;


        // For a third-party device, the following registers should be written
        
        //Sleep(500);
        //bool bSuccess = WritesToRegisters(chSerialNumber, nIpAddr, nNetWorkMask, nDefaultGateway);
        //if (!bSuccess)
        //{
            //printf("Writing registers fail\n");
            //break;
        //}
        
        printf("Finish, everything is OK.\n");
    } while (0);

    if (handle != NULL)
    {
        MV_CC_DestroyHandle(handle);
        handle = NULL;
    }
    

    // Deinitialize the SDK
    MV_CC_Finalize();

    printf("Press a key to exit.\n");
    WaitForKeyPress();

    return 0;
}

bool WritesToRegisters(char* chSerialNumber, unsigned int nIpAddr, unsigned int nNetWorkMask, unsigned int nDefaultGateway)
{
    printf("Now start writing registers ...\n");
    if (NULL == chSerialNumber)
    {
        printf("Serial number is invalid\n");
        return false;
    }
 
    unsigned int nIndex = -1;
    int nRet = MV_OK;
    void* handle = NULL;
    MV_CC_DEVICE_INFO_LIST stDeviceList;
    memset(&stDeviceList, 0, sizeof(MV_CC_DEVICE_INFO_LIST));

    do 
    {
        // Re-enumerate force IPs after force IP setting
        nRet = MV_CC_EnumDevices(MV_GIGE_DEVICE | MV_USB_DEVICE, &stDeviceList);
        if (MV_OK != nRet)
        {
            printf("Enum devices fail! nRet [0x%x]\n", nRet);
            break;
        }

        if (stDeviceList.nDeviceNum > 0)
        {
            for (unsigned int i = 0; i < stDeviceList.nDeviceNum; i++)
            {

                MV_CC_DEVICE_INFO* pDeviceInfo = stDeviceList.pDeviceInfo[i];
                if (NULL == pDeviceInfo)
                {
                    printf("Pointer invalid!\n");
                    break;
                }

                if (!strcmp(chSerialNumber, (char*)(pDeviceInfo->SpecialInfo.stGigEInfo.chSerialNumber)))
                {
                    nIndex = i;
                    printf("Find it, serial number:[%s]\n", pDeviceInfo->SpecialInfo.stGigEInfo.chSerialNumber);
                    break;
                }
            }
        }
        else
        {
            printf("Find no devices!\n");
            return false;
        }
        if (-1 == nIndex)
        {
            printf("Can't find the device, that just modified IP\n");
            return false;
        }

        // Select device, and create handle
        nRet = MV_CC_CreateHandle(&handle, stDeviceList.pDeviceInfo[nIndex]);
        if (MV_OK != nRet)
        {
            printf("Create handle fail! nRet [0x%x]\n", nRet);
            break;
        }

        // Turn on the device
        nRet = MV_CC_OpenDevice(handle);
        if (MV_OK != nRet)
        {
            printf("Open device fail! nRet [0x%x]\n", nRet);
            break;
        }
        // Set static IP
        unsigned int nConfig = htonl(0x05);
        nRet = MV_CC_WriteMemory(handle, (const void*)&(nConfig), PERSISTENT_CONFIG_REG, sizeof(nConfig));
        if (MV_OK != nRet)
        {
            printf("Write config fail! nRet [0x%x]\n", nRet);
            break;
        }
        
        unsigned int nIpAddr1 = htonl(nIpAddr);
        nRet = MV_CC_WriteMemory(handle, (const void*)&(nIpAddr1), PERSISTENT_IPADDR_REG, sizeof(nIpAddr));
        if (MV_OK != nRet)
        {
            printf("Write IP fail! nRet [0x%x]\n", nRet);
            break;
        }

        unsigned int nNetWorkMask1 = htonl(nNetWorkMask);
        nRet = MV_CC_WriteMemory(handle, (const void*)&(nNetWorkMask1), PERSISTENT_SUBNETMASK_REG, sizeof(nNetWorkMask));
        if (MV_OK != nRet)
        {
            printf("Write network mask fail! nRet [0x%x]\n", nRet);
            break;
        }

        unsigned int nDefaultGateway1 = htonl(nDefaultGateway);
        nRet = MV_CC_WriteMemory(handle, (const void*)&(nDefaultGateway1), PERSISTENT_DEFAULTGATEWAY_REG, sizeof(nDefaultGateway));
        if (MV_OK != nRet)
        {
            printf("Write default gateway fail! nRet [0x%x]\n", nRet);
            break;
        }
        // Turn off the device
        nRet = MV_CC_CloseDevice(handle);
        if (MV_OK != nRet)
        {
            printf("Close device fail! nRet [0x%x]\n", nRet);
            break;
        }
        // Destroy the handle
        nRet = MV_CC_DestroyHandle(handle);
        if (MV_OK != nRet)
        {
            printf("Destroy Handle fail! nRet [0x%x]\n", nRet);
            break;
        }
        handle = NULL;
        printf("Writing registers success\n");
    } while (0);

    if (handle != NULL)
    {
        MV_CC_DestroyHandle(handle);
        handle = NULL;
    }

    if (MV_OK != nRet)
    {
        return false;
    }
    
    return true;
}