ThisThread::sleep_for is asserted when the PWM test case calls this API with IRQ masked, so wait_us is used to fix this issue as PWM testes to be executed with interrupt disabled to avoid context switch.

Author: rajkan01

TESTS/mbed_hal_fpga_ci_test_shield/pwm/main.cpp

@@ -127,11 +127,11 @@ void fpga_pwm_period_fill_test(PinName pin, uint32_t period_ms, uint32_t fill_pr
             break;
     }
 
-    ThisThread::sleep_for(period_ms);
+    wait_us(PERIOD_US(period_ms));
 
     tester.io_metrics_start();
 
-    ThisThread::sleep_for(NUM_OF_PERIODS * period_ms);
+    wait_us(NUM_OF_PERIODS * PERIOD_US(period_ms));
 
     tester.io_metrics_stop();
     core_util_critical_section_exit();