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
標誌“-e<number>”讀取指定數量的外部時間戳事件。<number> 設定為 -1 可讓 testptp 無限讀取時間戳。
ts2PHC 和 testptp 都以檔案描述符的形式讀取 PPS 訊息，不能一起執行。Testptp 仍可用於引腳配置或啟用 pps 輸出。
在 clx-zeus-18 （GM） 上設定 PPS-out
在 PPS 輸出端生成周期性訊號
ts2phc“是linuxptp軟體包中的一個應用程式，ts2phc將PTP硬體時鐘（PHC）同步到外部時間戳訊號。單個源可用於將時間分配給一個或多個PHC裝置。