//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include <stdio.h>
#include "DIOu.h"
#include "ACCES32.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TSampleForm *SampleForm;

TPCI_COMMON_CONFIG buf[64];
//---------------------------------------------------------------------------
__fastcall TSampleForm::TSampleForm(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TSampleForm::FormCreate(TObject *Sender)
{
   int num, i;
   bool found;

   found = false;
   DriverRegistry = new TRegistry;
   DriverRegistry->RootKey = HKEY_LOCAL_MACHINE;
   RunFlag = True;

   if (InPortB(0x61) == 0xAA55) {
      Application->MessageBox("ACCESNT.SYS not detected. Please copy ACCESNT.SYS into [NT]/system32/drivers and re-run this sample.", "Warning", IDOK);
   }   

   DriverRegistry->OpenKey(MyKey, true);
   try {
      num = DriverRegistry->ReadInteger("NumDevices");
   }
   catch ( ... ) {
      num = 0;
   }

   if (num > 0)
      DriverRegistry->ReadBinaryData("PCICommonConfig",buf,num*sizeof(TPCI_COMMON_CONFIG));
   for (i=0; i<num; i++) {
      if (found)
         break;
      switch (buf[i].DeviceID) {
         case 0x0C69:
            CardName->Caption="P104-DIO-96 Parallel Digital I/O Card";
            AddressList->Items->Add("Port 0: "+IntToHex(int(buf[i].BaseAddresses[2] & 0xFFF8),4));
            AddressList->Items->Add("Port 1: "+IntToHex(int(buf[i].BaseAddresses[2] & 0xFFF8) + 4,4));
            AddressList->Items->Add("Port 2: "+IntToHex(int(buf[i].BaseAddresses[2] & 0xFFF8) + 8,4));
            AddressList->Items->Add("Port 3: "+IntToHex(int(buf[i].BaseAddresses[2] & 0xFFF8) + 12,4));
            OutPortB((buf[i].BaseAddresses[2] & 0xFFF8) + 0x1F, 0); //reset CPLD
            found = true;
            break;
      }
   }
   if (!found) {
      CardName->Caption = "No Card Found In Registry";
      StatusMemo->Lines->Clear();
      StatusMemo->Lines->Append("No Card Found In Registry.");
      StatusMemo->Lines->Append("This may mean the card is not installed, or that NTioPCI.SYS is not installed, or the card you have installed is not 8255 equipped.");
      StatusMemo->Lines->Append("Please make sure you have run PCIFind.EXE.");
      StatusMemo->Lines->Append("If you have an ISA card installed, you may continue running the sample "
                                "by entering the card's Base Address in the edit box above and continuing as normal.");
      IsaEdit->Visible = true;
      IsaLabel->Visible = true;
      AddressList->Enabled = false;
      RunFlag = false;
   }
   AddressList->ItemIndex = 0;
   if (RunFlag)
      Address = StrToInt("0x" + AddressList->Items->Strings[AddressList->ItemIndex].SubString(9,4));
   DriverRegistry->Free();
}
//---------------------------------------------------------------------------

void __fastcall TSampleForm::UpdateDriverRegistry(void)
{
    unsigned long TypeValue, StartValue, ErrorControlValue;

    DriverRegistry = new TRegistry;
    DriverRegistry->RootKey = HKEY_LOCAL_MACHINE;
    DriverRegistry->OpenKey(MyKey, true);

    TypeValue = 1;
    DriverRegistry->WriteInteger("Type", TypeValue);

    StartValue = 2;
    DriverRegistry->WriteInteger("Start", StartValue);

    ErrorControlValue = 1;
    DriverRegistry->WriteInteger("ErrorControl", ErrorControlValue);

    DriverRegistry->WriteString("Group", "Extended Base");

    DriverRegistry->Free();
}
//---------------------------------------------------------------------------
void __fastcall TSampleForm::ExitButtonClick(TObject *Sender)
{
    Close();
}
//---------------------------------------------------------------------------

void __fastcall TSampleForm::AddressListChange(TObject *Sender)
{
    StatusMemo->Lines->Append("New Port Selected: " + AddressList->Items->Strings[AddressList->ItemIndex]);
    Address = StrToInt("0x" + AddressList->Items->Strings[AddressList->ItemIndex].SubString(9,4));
}
//---------------------------------------------------------------------------

void __fastcall TSampleForm::BeginSampleClick(TObject *Sender)
{
   if (!RunFlag)
      sscanf(IsaEdit->Text.c_str(), "%x", &Address);

   if (RunTimer->Enabled) {
      RunTimer->Enabled = false;
      BeginSample->Caption = "Perform I/O";
   }
   else {
      RunTimer->Enabled = true;
      BeginSample->Caption = "Stop I/O";
   }
}
//---------------------------------------------------------------------------

void __fastcall TSampleForm::RunTimerTimer(TObject *Sender)
{
   static int value[3] = {0,0,0}, i = 0;
   int j;
   char msg[9] = "00000000\0";
   value[0] = 1 << i++;
   OutPortB(Address + 3, 0x82);
   OutPortB(Address, value[0]);
   value[1] = InPortB(Address);
   value[2] = InPortB(Address + 1);
   i %= 8;
   for (j=0; j<8; j++)
      msg[7-j] = (((value[0] & (1 << j))>0) + 0x30);
   PortAOut->Caption = msg;

   for (j=0; j<8; j++)
      msg[7-j] = (((value[1] & (1 << j))>0) + 0x30);
   PortAIn->Caption = msg;
   
   for (j=0; j<8; j++)
      msg[7-j] = (((value[2] & (1 << j))>0) + 0x30);
   PortBIn->Caption = msg;
}
//---------------------------------------------------------------------------

void __fastcall TSampleForm::FormActivate(TObject *Sender)
{
   if (!RunFlag)
      FocusControl(IsaEdit);
}
//---------------------------------------------------------------------------