necmfk.exe 引起的C8051 USB Debug adapter 连接失败的解决过程.

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通过使用Microsoft的ProcessExplorer程序定位冲突程序necmfk.exe，并终止其进程，成功解决了USBDebugadapter烧录连接失败的问题。该程序帮助用户在机器中查找所有打开设备的进程，并显示每个进程已打开的目录、文件、注册表键等。

现象:

USB Debug adapter 用flash utility 烧录连接失败,返回Cannot Connect to the Selected USB Debug Adapter / ToolStick Base Adapter Error的错误.使用USB Debug Adapter Firmware Reset 也无法update.而在另一台电脑上完全正常.

官方解决办法: http://community.silabs.com/t5/Silicon-Labs-Knowledge-Base/Troubleshooting-Cannot-Connect-to-the-Selected-USB-Debug-Adapter/ta-p/114057

我按以下办法成功找到冲突程序 necmfk.exe,并终止其进程,成功解决连不上的问题

Run Microsoft’s Process Explorer program to locate processes with open handles to devices

1. Download and extract Process Explorer from:
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx

2. Run Process Explorer. Process Explorer lists all processes running on your machine and lists what handles each process has opened, including directories, files, registry keys, etc.

3. Open the Lower Pane by pressing Ctrl+L to dispaly active handles for the selected process.

4. Open the Process Explorer Search dialog by pressing Ctrl+F

5. Search for “\Device\0” to list all processes with open handles to a device. The search results will include applications connected to many types of devices including sound cards as well as Human Interface Devices, such as the debug adapter.

6. Many programs connect to devices through standard Windows processes such as svchost.exe and csrss.exe. Clicking on each search result will highlight the process in the process tree in the main application. This will tell you which program has spawned the instance of the standard Windows process.

8. Use the search results to get a list of all programs that have open handles to devices and check to see if any of the programs is connected to the debug adapter.
Tip: This program can also be used to determine which program has locked a file and is preventing it from being deleted. Just search for the file or folder name.