zephyr — functionality specific to the Zephyr port

The zephyr module contains functions and classes specific to the Zephyr port.



Returns true if the current thread is a preemptible thread.

Zephyr preemptible threads are those with non-negative priority values (low priority levels), which therefore, can be supplanted as soon as a higher or equal priority thread becomes ready.


Returns the thread id of the current thread, which is used to reference the thread.


Runs the Zephyr debug thread analyzer on the current thread and prints stack size statistics in the format:

thread_name-20s: STACK: unused available_stack_space usage stack_space_used / stack_size (percent_stack_space_used %); CPU: cpu_utilization %”

  • CPU utilization is only printed if runtime statistics are configured via the ``CONFIG_THREAD_RUNTIME_STATS`` kconfig

This function can only be accessed if CONFIG_THREAD_ANALYZER is configured for the port in zephyr/prj.conf. For more information, see documentation for Zephyr thread analyzer.


Executes the given command on an UART backend. This function can only be accessed if CONFIG_SHELL_BACKEND_SERIAL is configured for the port in zephyr/prj.conf.

A list of possible commands can be found in the documentation for Zephyr shell commands.


Additional Modules