STM32G070CB TIMER DMA 中断问题

TIM1使用DMA 方式来产生PWM不同duty 的波形，想监控一下DMA 是否完成，但是无法进入中断。以下初始化的配置：（PWM 的波形是正确的，但是DMA完成的TC中断一直都没有监控到）

LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMA1);

/ DMA interrupt init / / DMA1_Ch4_7_DMAMUX1_OVR_IRQn interrupt configuration / NVIC_SetPriority(DMA1_Ch4_7_DMAMUX1_OVR_IRQn, 0); NVIC_EnableIRQ(DMA1_Ch4_7_DMAMUX1_OVR_IRQn);

/ TIM1_UP Init / LL_DMA_SetPeriphRequest(DMA1, LL_DMA_CHANNEL_5, LL_DMAMUX_REQ_TIM1_UP);

LL_DMA_SetDataTransferDirection(DMA1, LL_DMA_CHANNEL_5, LL_DMA_DIRECTION_MEMORY_TO_PERIPH);

LL_DMA_SetChannelPriorityLevel(DMA1, LL_DMA_CHANNEL_5, LL_DMA_PRIORITY_HIGH);

LL_DMA_SetMode(DMA1, LL_DMA_CHANNEL_5, LL_DMA_MODE_CIRCULAR);

LL_DMA_SetPeriphIncMode(DMA1, LL_DMA_CHANNEL_5, LL_DMA_PERIPH_NOINCREMENT);

LL_DMA_SetMemoryIncMode(DMA1, LL_DMA_CHANNEL_5, LL_DMA_MEMORY_INCREMENT);

LL_DMA_SetPeriphSize(DMA1, LL_DMA_CHANNEL_5, LL_DMA_PDATAALIGN_HALFWORD);

LL_DMA_SetMemorySize(DMA1, LL_DMA_CHANNEL_5, LL_DMA_PDATAALIGN_HALFWORD);

LL_DMA_ConfigAddresses(DMA1, LL_DMA_CHANNEL_5, (uint32_t)&u16DMA_Buffer_Lower[0], (uint32_t)&TIM1->CCR1, LL_DMA_GetDataTransferDirection(DMA1, LL_DMA_CHANNEL_5));

LL_DMA_SetDataLength(DMA1, LL_DMA_CHANNEL_5, 230); LL_DMA_EnableIT_TC(DMA1, LL_DMA_CHANNEL_5); LL_DMA_EnableIT_TE(DMA1, LL_DMA_CHANNEL_5);

LL_DMA_EnableChannel(DMA1, LL_DMA_CHANNEL_5);

LL_TIM_ClearFlag_UPDATE(TIM1);

LL_TIM_EnableIT_UPDATE(TIM1);

LL_TIM_CC_EnableChannel(TIM1, LL_TIM_CHANNEL_CH1); LL_TIM_CC_EnableChannel(TIM1, LL_TIM_CHANNEL_CH1N);

/ Enable TIM1 outputs / LL_TIM_EnableAllOutputs(TIM1);

/ Enable counter / LL_TIM_EnableCounter(TIM1);

LL_TIM_EnableDMAReq_UPDATE(TIM1);