Find HID/PID in DELPHI / ARDUINO Interface - arduino-uno

Question

(First, I am not sure whether this question is placed in the correct section of Stack Exchange. If not so, please give me a notice and delete the question.)
I have 8 Arduino's (Ards). Some Uno's and some 2650 Mega's. In an attempt to automatize the connection process (I use Delphi D-7 SE as I/O), I want to differentate between the UNO and the 2650 (mostly because the hardware differences in the appropriate chip). The way to do this (I think), is to get the PID and VID from the board. But I don't know how to do this. The code below gives me the correct driver, but not PID/VID . Is it possible to get PID/VID for this code-snippet ?? IF so, HOW ?
Thanks a lot.
Code here:
unit ArduinoTestU;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics,
Controls, Forms, Dialogs, JVsetupAPI, Registry, StdCtrls,
CPortCtl, CPort, Menus, XPMan;
type
TMainForm = class(TForm)
ListBox1: TListBox;
Label1: TLabel;
Button1: TButton;
procedure FormCreate(Sender: TObject);
function SetupEnumAvailableComPorts : TstringList;
procedure ListBox1Click(Sender: TObject);
procedure FormActivate(Sender: TObject);
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
ArdType : Integer;
end;
var
MainForm : TMainForm;
ComPortStringList : TStringList;
MyComPort : String;
CurDir : String;
implementation
uses Form1Unit, ArdFormU; (* , ArdFormU; *)
{$R *.dfm}
procedure TMainForm.Button1Click(Sender: TObject);
begin
MainForm.FormActivate(NIL);
end;
procedure TMainForm.FormActivate(Sender: TObject);
var
index : integer;
begin
ComPortStringList := SetupEnumAvailableComPorts;
if (ComPortStringList <> nil) and (ComPortStringList.Count > 0) then
for Index := 0 to ComPortStringList.Count - 1 do
Listbox1.Items.Add(ComPortStringList[Index]);
if Listbox1.Items.Count <> 0 then
BEGIN
Listbox1.Enabled := True;
Button1.Enabled := False;
END;
end;
procedure TMainForm.FormCreate(Sender: TObject);
BEGIN
Curdir := ExtractFileDir(Application.Exename);
end;
(*
The function below returns a list of available COM-ports
(not open by this or an other process), with friendly names. The list is formatted as follows:
COM1: = Communications Port (COM1)
COM5: = NI Serial Port (Com5)
COM6: = NI Serial Port (Com6)
COM7: = USB Serial Port (COM7)
COM8: = Bluetooth Communications Port (COM8)
COM9: = Bluetooth Communications Port (COM9)
This code originally posted at http://www.delphi3000.com/articles/article_4001.asp?SK=
errors have been fixed so it will work with Delphi 7 and SetupAPI from JVCL
*)
function TMainForm.SetupEnumAvailableComPorts : TstringList;
//
// Enumerates all serial communications ports that are available and ready to
// be used.
//
var
RequiredSize: Cardinal;
GUIDSize: DWORD;
Guid: TGUID;
DevInfoHandle: HDEVINFO;
DeviceInfoData: TSPDevInfoData;
MemberIndex: Cardinal;
PropertyRegDataType: DWord;
RegProperty: Cardinal;
RegTyp: Cardinal;
Key: Hkey;
Info: TRegKeyInfo;
S1,S2: string;
hc: THandle;
begin
Result := Nil;
//
//If we cannot access the setupapi.dll then we return a nil pointer.
//
if not LoadsetupAPI then
exit;
try
//
// get 'Ports' class guid from name
//
GUIDSize := 1; // missing from original code - need to tell function that the Guid structure contains a single GUID
if SetupDiClassGuidsFromName('Ports',#Guid,GUIDSize,RequiredSize) then
begin
//
//get object handle of 'Ports' class to interate all devices
//
DevInfoHandle := SetupDiGetClassDevs(#Guid,Nil,0,DIGCF_PRESENT);
if Cardinal(DevInfoHandle) <> Invalid_Handle_Value then
begin
try
MemberIndex := 0;
result := TStringList.Create;
//iterate device list
repeat
FillChar(DeviceInfoData,SizeOf(DeviceInfoData),0);
DeviceInfoData.cbSize := SizeOf(DeviceInfoData);
//get device info that corresponds to the next memberindex
if Not SetupDiEnumDeviceInfo(DevInfoHandle,MemberIndex,DeviceInfoData) then
break;
//query friendly device name LIKE 'BlueTooth Communication Port (COM8)' etc
RegProperty := SPDRP_FriendlyName; {SPDRP_Driver, SPDRP_SERVICE, SPDRP_ENUMERATOR_NAME,SPDRP_PHYSICAL_DEVICE_OBJECT_NAME,SPDRP_FRIENDLYNAME,}
SetupDiGetDeviceRegistryProperty(DevInfoHandle, DeviceInfoData,RegProperty, PropertyRegDataType,NIL,0,RequiredSize);
SetLength(S1,RequiredSize);
// ShowMessage('TEST: ' + S1);
if SetupDiGetDeviceRegistryProperty(DevInfoHandle,DeviceInfoData,RegProperty,PropertyRegDataType,#S1[1],RequiredSize,RequiredSize) then
begin
KEY := SetupDiOpenDevRegKey(DevInfoHandle,DeviceInfoData,DICS_FLAG_GLOBAL,0,DIREG_DEV,KEY_READ);
if key <> INValid_Handle_Value then
begin
FillChar(Info, SizeOf(Info), 0);
//query the real port name from the registry value 'PortName'
if RegQueryInfoKey(Key, nil, nil, nil, #Info.NumSubKeys,#Info.MaxSubKeyLen, nil, #Info.NumValues, #Info.MaxValueLen,
#Info.MaxDataLen, nil, #Info.FileTime) = ERROR_SUCCESS then
begin
RequiredSize := Info.MaxValueLen + 1;
SetLength(S2,RequiredSize);
if RegQueryValueEx(KEY,'PortName',Nil,#Regtyp,#s2[1],#RequiredSize) = Error_Success then
begin
If (Pos('COM',S2) = 1) then
begin
//Test if the device can be used
hc := CreateFile(pchar('\\.\' + S2 + #0), GENERIC_READ or GENERIC_WRITE,
0, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
if hc <> INVALID_HANDLE_VALUE then
begin
Result.Add(Strpas(PChar(S2)) + ' := ' + StrPas(PChar(S1)));
CloseHandle(hc);
end;
end;
end;
end;
RegCloseKey(key);
end;
end;
Inc(MemberIndex);
until False;
//If we did not found any free com. port we return a NIL pointer.
if Result.Count = 0 then
begin
Result.Free;
Result := NIL;
end
finally
SetupDiDestroyDeviceInfoList(DevInfoHandle);
end;
end;
end;
finally
UnloadSetupApi;
end;
end;
procedure TMainForm.ListBox1Click(Sender: TObject);
begin
Ardtype := Listbox1.ItemIndex;
MainForm.Hide;
ArdForm.ShowModal;
if Ardform.ModalResult <> mrOK then
ShowMessage('Der opstod en fejl ')
ELSE
BEGIN
MainForm.Show;
END;
end;
end.
Kris aka snestrup2016