STM32 CUB 配置定时器触发的DMA的双路DAC输出

设置定时器2事件触发输出，84分频，625us定时间隔触发DAC

设置双路DAC输出

设置DAC DMA

程序设置

  HAL_TIM_Base_Start(&htim2);
  HAL_DAC_Start_DMA(&hdac, DAC_CHANNEL_1, (uint32_t *)SinPhaseA, Point_N, DAC_ALIGN_12B_R);
	HAL_DAC_Start_DMA(&hdac, DAC_CHANNEL_2, (uint32_t *)SinPhaseB, Point_N, DAC_ALIGN_12B_R);