DCMD_PTPD_SET_PDELAY_INTERVAL
QNX SDP8.0Devctl and Ioctl CommandsDeveloper
Set the pdelay interval
Synopsis:
#include <dcmd_ptpd.h>
#define DCMD_PTPD_SET_PDELAY_INTERVAL __DIOT(_DCMD_NET, 14, MyPDelayIntervalInternal )
Arguments to devctl():
| Argument | Value |
|---|---|
| filedes | A file descriptor that you obtained by opening /dev/ptpd |
| dcmd | DCMD_PTPD_SET_PDELAY_INTERVAL |
| dev_data_ptr | A pointer to a MyPDelayIntervalInternal |
| n_bytes | sizeof(MyPDelayIntervalInternal) |
| dev_info_ptr | NULL |
Description:
This command sets the mean time interval between successive PDELAY_REQ messages in the Precision Time Protocol.
Note:
To use this command, you must specify the -K option when you start
ptpd2.
Input:
A MyPDelayIntervalInternal that's set to the base-2 logarithm of the interval, in seconds, that you want to use:
typedef uint32_t MyPDelayIntervalInternal;
Output:
None.
Example:
MyPDelayIntervalInternal my_pdelay_interval = 3;
if(devctl(fd, DCMD_PTPD_SET_PDELAY_INTERVAL, &my_pdelay_interval,
sizeof my_pdelay_interval, NULL) != EOK)
{
/* Error */
}
See also:
DCMD_PTPD_DELAYMS, DCMD_PTPD_DELAYSM, DCMD_PTPD_GET_PDELAY_INTERVAL, DCMD_PTPD_GET_TAI_UTC_OFFSET, DCMD_PTPD_GET_TIME, DCMD_PTPD_INFO, DCMD_PTPD_SEND_SIGNALING_MSG, DCMD_PTPD_STATUS
devctl() in the QNX OS C Library Reference
ptpd2 in the Utilities Reference
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