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embedded-trainings-2020/beginner-workshop/src/time.md
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Timers and Time

Next we'll look into the time related APIs exposed by the dk HAL.

Open the src/bin/blinky.rs file.

This program will blink (turn on and off) one of the LEDs on the board. The time interval between each toggle operation is one second. This wait time between consecutive operations is generated by the blocking timer.wait operation. This function call will block the program execution for the specified Duration argument.

The other time related API exposed by the dk HAL is the dk::uptime function. This function returns the time that has elapsed since the call to the dk::init function. This function is used in the program to log the time of each LED toggle operation.

Next, we'll look into the radio API exposed by the dk HAL. But before that we'll need to set up the nRF52840 Dongle.