Windows の COM Port を列挙する

WindowsでCOM Portデバイスを使うとき抜き差ししながらデバイスマネージャでCOMポート番号を調べていたが、もっと簡単に調べることができないのかなと思って探しているときに山本ワールドさんという方が作られたCOM Port列挙プログラムを見つけてしまった。

ちょっと興味があったのでVC++で作られたコードをEclipse+MinGW用に修正しデバイスのハードウェアＩＤ(VID/PID)も表示できるようにしてみた。

USB-Serial/FTDI/Bluetoothなどもわかるので便利かも。

※ＧＵＩ版も作ってみた。ＵＳＢの抜き差しによりウインドウが開き抜き差しされたＵＳＢデバイスがわかる。スタートアップ登録して使っているがＵＳＢ接続状態が一目でわかり非常に便利だ。
Windows の COM Port を列挙する　(GUI版)

【Dwonload (Eclipse Project)】
comlist.zip

【プログラム】

/*
  comlist.cpp - Windows COM Port Enumeration Utility (MinGW)

  Copyright (c) 2022 Sasapea's Lab. All right reserved.

  Reference from:

    http://yamatyuu.net/computer/program/comlist/index.html

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General
  Public License along with this library; if not, write to the
  Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  Boston, MA  02111-1307  USA
*/

#include <windows.h>
#include <setupapi.h> // Requires a link for setupapi.dll (-lsetupapi)
#include <stdio.h>
#include <tchar.h>

#if 0 // MinGW error!!
  #include <winioctl.h>
#else
  const GUID GUID_DEVINTERFACE_COMPORT =
    { 0x86e0d1e0, 0x8089, 0x11d0, 0x9c, 0xe4, 0x08, 0x00, 0x3e, 0x30, 0x1f, 0x73 };
#endif

int comList(void)
{
  int count = 0;
  HDEVINFO hDevInfo = SetupDiGetClassDevs(&GUID_DEVINTERFACE_COMPORT, 0, 0, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
  if (hDevInfo)
  {
    SP_DEVINFO_DATA data = { sizeof(data) };
    while (SetupDiEnumDeviceInfo(hDevInfo, count++, &data))
    {
      HKEY key = SetupDiOpenDevRegKey(hDevInfo, &data, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_QUERY_VALUE);
      if (key)
      {
        TCHAR name[256];
        DWORD size = sizeof(name);
        RegQueryValueEx(key, TEXT("PortName"), NULL, NULL, (LPBYTE)name, &size);
        _tprintf(TEXT("%s"), name);
        if (SetupDiGetDeviceRegistryProperty(hDevInfo, &data, SPDRP_DEVICEDESC, NULL, (LPBYTE)name, sizeof(name), NULL))
          _tprintf(TEXT(", %s"), name);
        else
          _tprintf(TEXT(", -"));
        if (SetupDiGetDeviceRegistryProperty(hDevInfo, &data, SPDRP_HARDWAREID, NULL, (LPBYTE)name, sizeof(name), NULL))
          _tprintf(TEXT(", %s\n"), name);
        else
          _tprintf(TEXT("\n"));
      }
    }
    SetupDiDestroyDeviceInfoList(hDevInfo);
  }
  return count;
}

int main(void)
{
  return comList();
}

comlist.cpp - Windows COM Port Enumeration Utility (MinGW)

Reference from:

http://yamatyuu.net/computer/program/comlist/index.html

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General

Public License along with this library; if not, write to the

Free Software Foundation, Inc., 59 Temple Place, Suite 330,

Boston, MA 02111-1307 USA

#include <windows.h>

#include <setupapi.h> // Requires a link for setupapi.dll (-lsetupapi)

#include <stdio.h>

#include <tchar.h>

#if 0 // MinGW error!!

#include <winioctl.h>

#else

const GUID GUID_DEVINTERFACE_COMPORT =

{ 0x86e0d1e0, 0x8089, 0x11d0, 0x9c, 0xe4, 0x08, 0x00, 0x3e, 0x30, 0x1f, 0x73 };

#endif

int comList(void)

{

int count = 0;

HDEVINFO hDevInfo = SetupDiGetClassDevs(&GUID_DEVINTERFACE_COMPORT, 0, 0, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);

if (hDevInfo)

{

SP_DEVINFO_DATA data = { sizeof(data) };

while (SetupDiEnumDeviceInfo(hDevInfo, count++, &data))

{

HKEY key = SetupDiOpenDevRegKey(hDevInfo, &data, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_QUERY_VALUE);

if (key)

{

TCHAR name[256];

DWORD size = sizeof(name);

RegQueryValueEx(key, TEXT("PortName"), NULL, NULL, (LPBYTE)name, &size);

_tprintf(TEXT("%s"), name);

if (SetupDiGetDeviceRegistryProperty(hDevInfo, &data, SPDRP_DEVICEDESC, NULL, (LPBYTE)name, sizeof(name), NULL))

_tprintf(TEXT(", %s"), name);

else

_tprintf(TEXT(", -"));

if (SetupDiGetDeviceRegistryProperty(hDevInfo, &data, SPDRP_HARDWAREID, NULL, (LPBYTE)name, sizeof(name), NULL))

_tprintf(TEXT(", %s\n"), name);

else

_tprintf(TEXT("\n"));

}

SetupDiDestroyDeviceInfoList(hDevInfo);

}

return count;

}

int main(void)

{

return comList();

}

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