Function yield_step1_callback

tests/test-scheduler-advanced-features.cpp:228–230

* @brief Callback for multi-step yield testing - step 1 */

 * @brief Callback for multi-step yield testing - step 1
 */
void yield_step1_callback() {
    advanced_test_output.push_back("step_1");
}

/**
 * @brief Callback for multi-step yield testing - step 2