IOCTL_FARC_GET_USEDDCB
Description:
query the currently used DCB.
Parameters:
Parameter |
Type |
Description |
Input |
- |
- |
- |
Output |
controller settings |
struct ARCNET_DCB |
Current settings of the ARCNET controller such as:
- clock divider for speed settings 2,5Mbit/s and below
- timeouts (response time, reconfiguration time, idle time)
- interface type
- NAK behaviour
- intialization behaviour
|
Possible errors (see also Error codes):
E_FARC_INVALID_HANDLE
E_FARC_BUFFER_TOO_SMALL
Example:
Note, that the following example is only a fragment. It is recommended,
that the driver is opened in asynchronous mode and a handle to the driver is available.
OVERLAPPED overlapped;
DWORD read, err;
BOOL ret;
ARCNET_DCB dcb;
overlapped.Offset = 0;
overlapped.OffsetHigh = 0;
overlapped.hEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
...
ret = DeviceIoControl(drvhandle,
IOCTL_FARC_GET_USEDDCB,
NULL, 0,
&dcb, sizeof(dcb),
&read, &overlapped);
if (!ret)
{
err = GetLastError();
if (err == E_FARC_PENDING)
{
ret = GetOverlappedResult(drvhandle, &overlapped, &read, TRUE);
if (!ret)
{
err = GetLastError();
// do errorhandling here
}
}
else
{
// other error occured, perhaps wrong handle
}
}
printf("dcb.z_et_1 = %u",dcb.z_et_1);
...
See also:
DeviceIoControl()
ARCNET_DCB
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