Time synchronization of controller

A processor-executable method comprising:

• synchronizing a master clock in a controller with an external global clock and setting a master time based on the master clock;
• synchronizing a controller clock in the controller with the master clock and performing time synchronization to synchronize a controller time based on the controller clock with the master time;
• transmitting controller time data indicating the synchronized controller time to at least one local device;
• setting a plurality of time windows corresponding to a plurality of clock cycles of a clock signal for the time synchronization;
• determining whether one clock cycle of the plurality of clock cycles has started within one time window of the plurality of time windows, the one time window corresponding to the one clock cycle;
• and
• suspending the time synchronization corresponding to the one clock cycle, in response to determining that the one clock cycle has not started within the one time window.

A non-transitory computer-readable storage medium storing processor-executable instructions to:

• synchronize a master clock in a controller with an external global clock and set a master time based on the master clock;
• synchronize a controller clock in the controller with the master clock and performing time synchronization to synchronize a controller time based on the controller clock with the master time;
• transmit controller time data indicating the synchronized controller time to at least one local device;
• set a plurality of time windows corresponding to a plurality of clock cycles of a clock signal for the time synchronization;
• determine whether one clock cycle of the plurality of clock cycles has started within one time window of the plurality of time windows, the one time window corresponding to the one clock cycle;
• and
• suspend the time synchronization corresponding to the one clock cycle, in response to determining that the one clock cycle has not started within the one time window.