Test the PTP Physical Hardware Clock functionality using the "phc_ctl" (a
part of "linuxptp").
The test contains three sub-tests:
* "settime" test
* "adjtime" test
* "adjfreq" test
"settime" test:
* set the PHC time to 0 seconds.
* wait for 120.5 seconds.
* check if PHC time equal to 120.XX seconds.
"adjtime" test:
* set the PHC time to 0 seconds.
* adjust the time by 10 seconds.
* check if PHC time equal to 10.XX seconds.
"adjfreq" test:
* adjust the PHC frequency to be 1% faster.
* set the PHC time to 0 seconds.
* wait for 100.5 seconds.
* check if PHC time equal to 101.XX seconds.
Usage:
$ ./phc.sh /dev/ptp<X>
It is possible to run a subset of the tests, for example:
* To run only the "settime" test:
$ TESTS="settime" ./phc.sh /dev/ptp<X>
ptp_dev=`ethtool -T enp66s0f1 | awk '/PTP Hardware Clock:/ {print $4}'` && testptp -d /dev/ptp$ptp_dev -L 0,1
Set PPS-in read external time stamp events:
ptp_dev=`ethtool -T enp66s0f1 | awk '/PTP Hardware Clock:/ {print $4}'` && testptp -d /dev/ptp$ptp_dev -e 1000
标志“-e<number>”读取指定数量的外部时间戳事件。<number> 设置为 -1 可让 testptp 无限读取时间戳。
ts2PHC 和 testptp 都以文件描述符的形式读取 PPS 消息，不能一起运行。Testptp 仍可用于引脚配置或启用 pps 输出。
在 clx-zeus-18 （GM） 上设置 PPS-out
在 PPS 输出端生成周期性信号
ts2phc“是linuxptp软件包中的一个应用程序，ts2phc将PTP硬件时钟（PHC）同步到外部时间戳信号。单个源可用于将时间分配给一个或多个PHC设备。