POSIX gettimeofday() with clock initialization over SNTP¶
Overview¶
This sample application demonstrates using the POSIX gettimeofday()
function to display the absolute wall clock time every second. At
system startup, the current time is queried using the SNTP networking
protocol, enabled by setting the CONFIG_NET_CONFIG_CLOCK_SNTP_INIT
and CONFIG_NET_CONFIG_SNTP_INIT_SERVER options.
Building and Running¶
This project outputs to the console. It can be built and executed on QEMU as follows:
west build -b qemu_x86 samples/posix/gettimeofday
west build -t run
For comparison, a version for native POSIX operating systems (e.g. Linux) can be built using:
make -f Makefile.posix