/* RP2005 Constructor
* List of serial numbers passed in and parsed into StringBuilder sn and separated with commas,
* RP_OpenDIO will initialize all the boards in this string.
*
* Oct 29, 2020
* Removing List<string> serial and the foreach to append user listed sn. This is pointless because
* the ListDIO will find all connected devices and overwrite the list we created using user listed serial
* numbers.
*
*/
public static void Start()
{
// need to create temporary buffers to hold return string values for
// board names and serial numbers
StringBuilder sn = new StringBuilder(512);
StringBuilder desc = new StringBuilder(512);
try
{
numDevs = 0;
listDevErrCode = IUSBIOBoardService.RP_ListDIO(ref numDevs, sn, desc);
}
catch
{
if (!System.IO.File.Exists(Environment.SystemDirectory + "\\RP2005.dll") &&
!System.IO.File.Exists(Directory.GetCurrentDirectory() + "\\RP2005.dll"))
{
listDevErrCode = 500; // rp2005.dll not found
}
else
{
listDevErrCode = 1000; // unknown error occured
}
}
if (listDevErrCode == 0)
{
SN = sn.ToString().Split(',');
Desc = desc.ToString().Split(',');
hDIO = new uint[numDevs];
errCode = new uint[numDevs];
errMsg = new string[numDevs];
for (int i = 0; i < numDevs; i++)
{ // open the boards
hDIO[i] = 0;
try
{
errCode[i] = IUSBIOBoardService.RP_OpenDIO(SN[i], ref hDIO[i]);
if (Desc[i].Contains("8DI 8DO")) // half board: single 8 bit input port, single 8 bit output port
{
// half board
MainHandlerService.ActiveIOBoards.Add(SN[i], new HalfIOBoard(i, SN[i], Desc[i]));
}
else if (Desc[i].Contains("16DI 16DO")) // full board: dual 8 bit input ports, dual 8 bit output ports
{
MainHandlerService.ActiveIOBoards.Add(SN[i], new FullIOBoard(i, SN[i], Desc[i]));
}
else
{
MainHandlerService.ActiveIOBoards.Add(SN[i], new FullIOBoard(i, SN[i], Desc[i]));
}
}
catch
{
errCode[i] = 1000;
}
}
}
}
// destructor
public static void Stop()
{
foreach (var board in MainHandlerService.ActiveIOBoards)
{
// stop thread for reading input signals for each board
board.Value.ReadInputSignalService.Stop();
}
for (int i = 0; i < numDevs; i++)
{
// Remove the object from our dictionary before closing the connection.
MainHandlerService.ActiveIOBoards.Remove(SN[i]);
errCode[i] = IUSBIOBoardService.RP_CloseDIO(hDIO[i]);
}
}
/* WritePort - write data to a port
* Parameters:
* brd - 0 based board number to read.
* port - output port 0 starts at 16. output port 1 is 17.
* value - value to write to the port.
*/
public static UInt32 WritePort(int brd, byte port, byte value)
{
if (brd < numDevs)
{
lock (UsbLockObj)
{
errCode[brd] = IUSBIOBoardService.RP_WritePort(hDIO[brd], port, value, tmpErrMsg);
}
if (errCode[brd] == 0)
{
return(0);
}
else
{
errMsg[brd] = tmpErrMsg.ToString();
return(errCode[brd]);
}
}
else
{
return(1001); // invalid board number. must be between 0 and the number of devices
}
}
/* ReadPort - read a port.
* Parameters:
* brd - 0 based board number to read.
* port - port number to read. 0 is input port 0, 1 is input port 1, 2 is input port 2.
* port 16 is output port 0, 17 is output port 1, 18 is output port 2.
* Note: reading outputs will not return actual state of the bit. it will return the last
* output value.
* value - if the port read was successful, the "value" parameter will contain the value read from the port.
*
* Return Value:
* Returns 0 if successful, otherwise it returns false. You can read the error string
* for the operation by accessing the errMsg array using the brd number as the index
* into the array.
*/
public static UInt32 ReadPort(int brd, byte port, ref byte value)
{
if (brd < numDevs)
{
lock (UsbLockObj)
{
errCode[brd] = IUSBIOBoardService.RP_ReadPort(hDIO[brd], port, ref value, tmpErrMsg);
}
if (errCode[brd] == 0)
{
return(0);
}
else
{
errMsg[brd] = tmpErrMsg.ToString();
return(errCode[brd]);
}
}
else
{
return(1001); // invalid number of boards
}
}