To use the FTP library:

Enable the wireless LAN with SysSetWLANPower function and initialize the wireless LAN with SysWLANInit function.
Sample
```
    SysSetWLANPower(SYS_WLAN_POWER_AUTO);
    SysWLANInit(NULL);
```

Call SysGetWLANConnectStatus function and wait until the wireless LAN is connected. In the meantime, you need to keep calling the Idle function.

Sample

    unsigned int waitStartTick;

    ...

    waitStartTick = GetTickCount();
    do{
        SysGetWLANConnectStatus(&status);
        if (status == SYS_WLAN_STATUS_CONNECTED)
            break;
        Idle();
    }while (GetTickCount() - waitStartTick < WLAN_CONNECTION_TIMEOUT);
    if (status != SYS_WLAN_STATUS_CONNECTED){
        // WLAN timeout error
        ...

    }

Call the FTP_Connect function to connect to the FTP server.

Sample

    int ret;

    ...

    ret = FTP_Connect((char *)ftpHost, 21, FTP_PASV, ResponseCb);
    if (ret != M2M_SUCCESS){
        // Error
        ...
    }

Sample

    ret = FTP_Command(FTP_CMD_USERNAME, (char *)ftpUsername, NULL);
    if (ret != M2M_SUCCESS){
        // Error
        ...
    }
    ret = FTP_Command(FTP_CMD_PASSWORD, (char *)ftpPassword, NULL);
    if (ret != M2M_SUCCESS){
        // Error
        ...
    }

Specify the current working directory and data type with the FTP_Command function.

Sample

    ret = FTP_Command(FTP_CMD_CHPATH, (char *)ftpPath, NULL);
    if (ret != M2M_SUCCESS){
        // Error
        ...
    }
    ret = FTP_Command(FTP_CMD_TYPESET, "A", NULL);
    if (ret != M2M_SUCCESS){
        // Error
        ...
    }

Generate the send file names with the FTP_CreateRemoteFilename function. (Optional)
Send the file with the FTP_Command function.

Sample

    /* Create file names */
    memset(remoteName, 0, sizeof(remoteName));    // remoteName: Target file name
    memset(tempName, 0, sizeof(tempName));        // tempName:   Temporary file name
    ret = FTP_CreateRemoteFilename(FTP_NAME_TIME_NOID, uploadFile, remoteName, tempName);
    if (ret != M2M_SUCCESS){
        // Error
        ...
    }
    ...
    /* Upload a file with the temporary file name */
    ret = FTP_Command(FTP_CMD_PUT, (char *)uploadFile, tempName);
    if (ret != M2M_SUCCESS){
        // Error
        ...
    }
    ...
    /* Rename the file to the target file name */
    ret = FTP_Command(FTP_CMD_RENAME, tempName, remoteName);
    if (ret != M2M_SUCCESS){
        // Error
        ...
    }

Receive a file with the FTP_Command function

Sample

    ret = FTP_Command(FTP_CMD_GET, (char *)downloadFile, remoteName);
    if (ret != M2M_SUCCESS){
        // Error
        ...
    }

Log out of the FTP server with the FTP_Command function.
Quit the FTP client with the FTP_Finish function.
Sample
```
    FTP_Command(FTP_CMD_QUIT, NULL, NULL);
    FTP_Finish();
```
Disable the wireless LAN with SysSetWLANPower function.
Sample
```
    SysSetWLANPower(SYS_WLAN_POWER_OFF);
```

OPH-5000i SDK Manual

See also