029sge, 把time配置成pwm 后，有没有方法通过pdma输入一组数据...

029sge程序：不能实现功能，卡在while

        /* Enable PDMA clock source */

        CLK_EnableModuleClock(PDMA_MODULE);

        /* Open Channel 2 */

        PDMA_Open(1 << 2);

        /* Transfer count is PDMA_TEST_LENGTH, transfer width is 32 bits(one word) */

        PDMA_SetTransferCnt(2, PDMA_WIDTH_32, buffersize);

        /* Set source address is au8SrcArray, destination address is au8DestArray, Source/Destination increment size is 32 bits(one word) */

        PDMA_SetTransferAddr(2, (uint32_t)LED_BYTE_Buffer, PDMA_SAR_INC, (uint32_t)(&(TIMER1 -> PWMCMPDAT)), PDMA_DAR_FIX);

        /* Request source is memory to TMR1 */

        PDMA_SetTransferMode(2, PDMA_TMR1, FALSE, 0);

        /* Transfer type is burst transfer and burst size is 1 */

        PDMA_SetBurstType(2, PDMA_REQ_BURST, PDMA_BURST_1);

  TPWM_CLEAR_COUNTER(TIMER1);

        /* Start Timer PWM counter */

        TPWM_START_COUNTER(TIMER1);

        /* Generate a software request to trigger transfer with PDMA channel 2  */

        PDMA_Trigger(2);

        while(!(PDMA_GET_TD_STS() & PDMA_TDSTS_TDIF2_Msk));

        TPWM_STOP_COUNTER(TIMER1);

        /* Clear transfer done flag of channel 2 */

        PDMA_CLR_TD_FLAG(PDMA_TDSTS_TDIF2_Msk);

stm32程序，可以实现想要的功能

        DMA_SetCurrDataCounter(DMA1_Channel7, buffersize);                        

        TIM_SetCounter(TIM2,0x0000);

        TIM_Cmd(TIM2, ENABLE);                                                 // enable Timer 2

        DMA_Cmd(DMA1_Channel7, ENABLE);

        while(!DMA_GetFlagStatus(DMA1_FLAG_TC7));         // wait until transfer complete

        TIM_Cmd(TIM2, DISABLE);                         // disable Timer 2

        TIM_ClearFlag(TIM2,TIM_FLAG_CC2);

        DMA_Cmd(DMA1_Channel7, DISABLE);                         // disable DMA channel 7

        DMA_ClearFlag(DMA1_FLAG_TC7);                                 // clear DMA1 Channel 7 transfer complete flag

• 问题补充 :

  简单讲我想实现的功能就是类似stm32芯片的  PWM+DMA控制灯带，DMA输出占空比值，PWM输出不同的波形，控制灯的颜色亮度。

  有没有前辈能回复快一点，不胜感激。。

• 问题补充 :

  PWM频率是800K