In this tutorial we show you how to run a simple data-logging program on your device. The program logs the current date and time, which can then be viewed in the serial output of your device.
The following Toit program uses
main: time := Time.now.local print "Time: $(%02d time.h):$(%02d time.m)" print "Date: $(%04d time.year)-$(%02d time.month)-$(%02d time.day)"
Save the above Toit program in a file named
time.toit, and run the command
This runs the
time.toit program on your default device. If you have
more than one device and haven't defined a default device yet, you can
-d option to specify on which device the program should run.
To see the output of the program you need to monitor the serial line, which
you can do in a different terminal window with the
jag monitor command.
The output in the
jag monitor will look like
[jaguar] INFO: program 7a3d83f9-837c-589d-a6e4-8f95ecb3cab4 started Time: 00:00 Date: 1970-01-01 [jaguar] INFO: program 7a3d83f9-837c-589d-a6e4-8f95ecb3cab4 stopped
The reason you see this date from the 1970s is that the system time has not been updated on your device yet. Here is a small program that can be run after power-up to fix that.