设置TIM1输出对称PWM,程序运行时怎样更改频率，占空比和死。

fjlmnb456 提问时间：2020-12-4 16:00 /

问答
是否解决:

int main(void)
{
  /* USER CODE BEGIN 1 */
myFlag. power = 0;
      VTimer0[1]=0;
  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_ADC1_Init();
  MX_TIM1_Init();
  MX_USART1_UART_Init();
  MX_TIM14_Init();
  /* USER CODE BEGIN 2 */
HAL_ADCEx_Calibration_Start(&hadc1);//ADC自校验
HAL_ADC_Start_DMA(&hadc1,(uint32_t *)ADC_ConvertedData,ADC_SAMPLE);//启动AD转换并使能DMA传输和中断
HAL_TIM_Base_Start_IT(&htim1);       //初始化定时器中断
  HAL_TIM_Base_Start_IT(&htim14);       //初始化定时器中断

HAL_TIM_PWM_Stop(&htim1,TIM_CHANNEL_1);
HAL_TIMEx_PWMN_Stop(&htim1,TIM_CHANNEL_1);

//__HAL_TIM_CLEAR_FLAG(&htim6,TIM_FLAG_UPDATE);  //这是关断定时器语句
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */
HAL_TIMEx_PWMN_Start(&htim1,TIM_CHANNEL_1);
HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_1);
HAL_Delay(500);
ADC_ConvertedData[3];

//htim1.Instance->sTimerxRegs[0].PERxR = 50000;//通过修改重装载值PER，从而修改PWM的频率
//htim1.Instance->sTimerxRegs[0].CMP1xR = 11504;//通过修改比较值CMP，从而修改占空比
               //上面两个语句在STM32G071不能用啊
  }
  /* USER CODE END 3 */
}
希望高手指点