HalLedOnOff和HalLedSet的区别？

RemoTI的BasicRemote示例中，RSA_KeyCback（key的回调函数）函数中用HalLedSet(HAL_LED_2, HAL_LED_MODE_ON)，可以在按键时使灯点亮，但是换成HalLedOnOff (HAL_LED_2, HAL_LED_MODE_ON）后，按键不能点亮灯，这是为什么？

I have found the root cause. Since the c file not  declares the  function 'HalLedOnOff', in fact, calling failed. But the IAR compiler not show error. Include the 'hal_led.h' file will fix the issue.