NTP & Real-Time Clock

NTP-SYSTEM-RTC DEMO APPLICATION

HARDWARE SETUP: Tested with MOD54415 on a MOD-DEV-70 hardware rev 1.93.

This example demonstrates the following features:

• Updates the system time with the current UTC time pulled from an available NTP server (pool.ntp.org). If your module is set to static IP address settings, then you will need to manually assign a DNS server address for this feature to work.
• Take the current system time and save it to the real-time clock (RTC). The RTC will then be running in sync with the system time.
• Take the current time in the RTC and set the system time information. The system time will then be running in sync with the RTC.
• When the device or module is reset or powered on again after a recent power loss, the system time will be reset, but the RTC can continue running until the super-capacitor is discharged. The software-reset option is available to demonstrate the RTC's ability to retain saved time information once it is properly set.
• Set the local time zone information with a call to tzsetchar(). For more more information on this function, refer to "Chapter 14 - NBTime Library" of the NetBurner Runtime Libraries PDF document. In this example, Pacific time zone information is used as a demonstration.
• Display the current system and RTC times, and local time zone information if applicable. It is preferred that the RTC store the UTC time, not local time.
• In order to take advantage of setting and getting time information from the real-time clock (RTC), a device that contains an RTC component or a module that is mounted on a development board with an RTC component must be used. Current RTC components supported in this example at the time of this writing are the Intersil X1226 and NXP PCF8563.