private static int read(IntPtr deviceHandle, byte[] pData, uint dataSize, uint timeout)
{
try
{
uint tmpReadTO = 0;
uint tmpWriteTO = 0;
int status = SIUSBXP.SI_SUCCESS;
// Save timeout values.
SIUSBXP.SI_GetTimeouts(ref tmpReadTO, ref tmpWriteTO);
// Set a timeout for the read
SIUSBXP.SI_SetTimeouts(timeout, 0);
// Read the data
uint recvDataSize = 0;
status = SIUSBXP.SI_Read(deviceHandle, pData, dataSize, ref recvDataSize, IntPtr.Zero);
// Restore timeouts
SIUSBXP.SI_SetTimeouts(tmpReadTO, tmpWriteTO);
return((status == SIUSBXP.SI_SUCCESS) ? (int)recvDataSize : -1);
}
catch { }
return(-200);
}
private static void close(IntPtr deviceHandle)
{
try
{
SIUSBXP.SI_Close(deviceHandle);
}
catch { }
}
private static int getPID(uint index, StringBuilder builder)
{
try
{
if (index >= SiUSBController.count())
{
return(-100);
}
var status = SIUSBXP.SI_GetProductString(index, builder, SIUSBXP.SI_RETURN_PID);
return((status == SIUSBXP.SI_SUCCESS) ? 1 : -1);
}
catch { }
return(-200);
}
private static bool open(uint index, ref IntPtr deviceHandle)
{
try
{
if (index >= SiUSBController.count())
{
return(false);
}
var status = SIUSBXP.SI_Open(index, ref deviceHandle);
return(status == SIUSBXP.SI_SUCCESS);
}
catch { }
return(false);
}
///////////////////////////// SiUSBXp ///////////////////////////
private static uint count()
{
try
{
uint dwNumDevices = 0;
var status = SIUSBXP.SI_GetNumDevices(ref dwNumDevices);
if (status != SIUSBXP.SI_SUCCESS || dwNumDevices == 0)
{
return(0);
}
return(dwNumDevices);
}
catch { }
return(0);
}
