如何在LPC54606上使用SDK的“led 组件”？

我正在尝试在 LPC54606 上使用 SDK 的“led 组件”。
开/关运行良好。
但 LED_Flash & LED_Dimmer 只使 On 状态。
这是我的代码：
   Console_Print("Test LED_rn");

    uint32_t s_ledMonochromeHandleBuffer[((LED_HANDLE_SIZE + sizeof(uint32_t) - 1) / sizeof(uint32_t))];
    led_handle_t s_ledMonochromeHandle = (led_handle_t)&s_ledMonochromeHandleBuffer[0];

    led_config_t ledMonochromeConfig;
    ledMonochromeConfig.type = kLED_TypeMonochrome;
    ledMonochromeConfig.ledMonochrome.monochromePin.dimmingEnable = 1;
    ledMonochromeConfig.ledMonochrome.monochromePin.dimming.sourceClock = 48000000;
    ledMonochromeConfig.ledMonochrome.monochromePin.dimming.instance = 0;
    ledMonochromeConfig.ledMonochrome.monochromePin.dimming.channel = 1;
    ledMonochromeConfig.ledMonochrome.monochromePin.dimming.pinStateDefault = 1;
    ledMonochromeConfig.ledMonochrome.monochromePin.gpio.port =0;
    ledMonochromeConfig.ledMonochrome.monochromePin.gpio.pin =1;
    ledMonochromeConfig.ledMonochrome.monochromePin.gpio.level =0;
    ledMonochromeConfig.ledMonochrome.monochromePin.gpio.direction =kHAL_GpioDirectionOut;
    LED_Init(s_ledMonochromeHandle, &ledMonochromeConfig);

    Console_Print("LED OFFrn");
    LED_TurnOnOff(s_ledMonochromeHandle, 0);
    SW3_WaitKey();
    Console_Print("LED Flashrn");
    led_flash_config_t ledFlash;
    ledFlash.times = LED_FLASH_CYCLE_FOREVER;
    ledFlash.period = 500;
    ledFlash.duty = 50;
    ledFlash.flashType = kLED_FlashOneColor;
    LED_Flash(s_ledMonochromeHandle, &ledFlash);
    SW3_WaitKey();
    Console_Print("LED Dimmingrn");
    LED_Dimming(s_ledMonochromeHandle, 500, 0);
    SW3_WaitKey();可能我错过了定时器/pwm 初始化，但我不知道该怎么做。