有谁用hal库写过定时器触发的ad采集的程序吗定时器和ad设置有什么要注意的地方

arels · 发表于 2016-10-19 14:38:28

正点原子发表于 2016-10-20 22:15
搞定了么？

谢谢已经搞定了

arels · 发表于 2016-10-19 14:39:19

/************************************************************/
/*Hal库adc初始化*/
/************************************************************/

void MY_ADC_Init(void)
{

//adc初始化
ADC1_Handler.Instance=ADC1;
ADC1_Handler.Init.ClockPrescaler=ADC_CLOCK_SYNC_PCLK_DIV2; //2分频，ADCCLK=168/8=21MHZ  ADC_CLOCK_SYNC_PCLK_DIV2
ADC1_Handler.Init.Resolution=ADC_RESOLUTION_12B;          //12位模式
ADC1_Handler.Init.DataAlign=ADC_DATAALIGN_RIGHT;          //右对齐
ADC1_Handler.Init.ScanConvMode=DISABLE;                   //非扫描模式
ADC1_Handler.Init.EOCSelection=DISABLE;                   //开启EOC中断
ADC1_Handler.Init.ContinuousConvMode=DISABLE;             //关闭连续转换
ADC1_Handler.Init.NbrOfConversion=1;                      //1个转换在规则序列中也就是只转换规则序列1
ADC1_Handler.Init.DiscontinuousConvMode=ENABLE;          //开启不连续采样模式
ADC1_Handler.Init.NbrOfDiscConversion=0;                   //不连续采样通道数为0
ADC1_Handler.Init.ExternalTrigConv=ADC_EXTERNALTRIGCONV_T5_CC1;    //当前ADC_EXTERNALTRIGCONV_T5_CC1使用定时器5触发  ADC_SOFTWARE_START软件触发
ADC1_Handler.Init.ExternalTrigConvEdge=ADC_EXTERNALTRIGCONVEDGE_FALLING;//当前ADC_EXTERNALTRIGCONVEDGE_FALLING下降沿触发  ADC_EXTERNALTRIGCONVEDGE_NONE使用软件触发
ADC1_Handler.Init.DMAContinuousRequests=DISABLE;          //关闭DMA请求
HAL_ADC_Init(&ADC1_Handler);                               //初始化

ADC_ChannelConfTypeDef ADC1_ChanConf;
ADC1_ChanConf.Channel=0;                                  //通道
ADC1_ChanConf.Rank=1;                                     //第1个序列，序列1
ADC1_ChanConf.SamplingTime=ADC_SAMPLETIME_15CYCLES;       //采样时间
ADC1_ChanConf.Offset=0;
   HAL_ADC_ConfigChannel(&ADC1_Handler,0);       //通道配置

   HAL_ADC_Start(&ADC1_Handler);                            //开启ADC
//
HAL_ADC_PollForConversion(&ADC1_Handler,10);             //轮询转换
}

void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
{
GPIO_InitTypeDef GPIO_Initure;
__HAL_RCC_ADC1_CLK_ENABLE();          //使能ADC1时钟
__HAL_RCC_GPIOA_CLK_ENABLE(); //开启GPIOA时钟

GPIO_Initure.Pin=GPIO_PIN_0;          //PA0
GPIO_Initure.Mode=GPIO_MODE_ANALOG;    //模拟
GPIO_Initure.Pull=GPIO_NOPULL;       //不带上下拉
HAL_GPIO_Init(GPIOA,&GPIO_Initure);
}

arels · 发表于 2016-10-19 14:40:20

void MX_TIM5_Init(uint32_t Prescaler,uint32_t Period)
{

  TIM_MasterConfigTypeDef sMasterConfig;
  TIM_OC_InitTypeDef sConfigOC;

  htim5.Instance = TIM5;
  htim5.Init.Prescaler = Prescaler;
  htim5.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim5.Init.Period = Period;
  htim5.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
HAL_TIM_PWM_DeInit(&htim5);
HAL_TIM_PWM_Init(&htim5);

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&htim5, &sMasterConfig);

  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 500;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  HAL_TIM_PWM_ConfigChannel(&htim5, &sConfigOC, TIM_CHANNEL_1);

  //HAL_TIM_MspPostInit(&htim5);
  HAL_TIM_PWM_Start(&htim5,TIM_CHANNEL_1);//开启PWM通道1

}

//定时器底层驱动，时钟使能，引脚配置
//此函数会被HAL_TIM_PWM_Init()调用
//htim:定时器句柄
void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef *htim)
{
GPIO_InitTypeDef GPIO_Initure;
__HAL_RCC_TIM5_CLK_ENABLE(); //使能定时器5
__HAL_RCC_GPIOA_CLK_ENABLE(); //开启GPIOA时钟

GPIO_Initure.Pin=GPIO_PIN_0;            //PA0
GPIO_Initure.Mode=GPIO_MODE_AF_PP;    //复用推挽输出
GPIO_Initure.Pull=GPIO_PULLUP;       //上拉
GPIO_Initure.Speed=GPIO_SPEED_HIGH;    //高速
GPIO_Initure.Alternate= GPIO_AF2_TIM5; //PA0复用为TIM5_CH1
HAL_GPIO_Init(GPIOA,&GPIO_Initure);
}