Zephyr rtos threads

Some Zephyr RTOS API functions to learn:

• k_sem_take(&lte_connected, K_FOREVER);
• k_work_schedule(&connect_work, K_NO_WAIT);

Unsure whether this routine a Zephyr one:

 work_init();

Following non-function entities from aws_iot main.c appear important:

77 static struct k_work_delayable shadow_update_work;
78 static struct k_work_delayable connect_work;
79 static struct k_work shadow_update_version_work;

^ Specific Zephyr documentation pages

• https://docs.zephyrproject.org/latest/reference/kernel/threads/workqueue.html?highlight=k_work_reschedule#c.k_work_reschedule