esp-idf/examples/system/eventfd

eventfd example

The example demonstrates the use of eventfd() to collect events from other tasks and ISRs in a select() based main loop. The example starts two tasks and installs a timer interrupt handler:

1. The first task writes to the first eventfd periodically.
2. The timer interrupt handler writes to the second eventfd.
3. The second task collects the event from two fds with a select() loop.

See the README.md file in the upper level 'examples' directory for more information about examples.