stm32f103定时器1启动AD采样

只看该作者 · 2007-12-14 18:46

stm32f103

今天照着例子整了个定时器启动AD采样，可怎么也采不到数据。

希望高手指点一下！！

部分代码如下：
/* System clocks configuration ------------------------------------*/
  RCC_Configuration();
/* NVIC configuration ------------------------------------------*/
  NVIC_Configuration();
  /* GPIO configuration -------------------------------------------*/
  GPIO_Configuration();
  /* TIM1 configuration ------------------------------------------*/
  TIM1_DeInit();
  /* Time Base configuration */
  TIM1_TimeBaseStructure.TIM1_Prescaler = 0x4;
  TIM1_TimeBaseStructure.TIM1_CounterMode = TIM1_CounterMode_Up;
  TIM1_TimeBaseStructure.TIM1_Period = 0xFF;
  TIM1_TimeBaseStructure.TIM1_ClockDivision = 0x0;
  TIM1_TimeBaseStructure.TIM1_RepetitionCounter = 0x0;
  TIM1_TimeBaseInit(&TIM1_TimeBaseStructure);

  /* DMA Channel1 Configuration -----------------------------------*/
  DMA_DeInit(DMA_Channel1);
  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
  DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_RegularConvertedValueTab;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_BufferSize = 32;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(DMA_Channel1, &DMA_InitStructure);
  /* Enable DMA channel1 */
  DMA_Cmd(DMA_Channel1, ENABLE);

  /* ADC1 configuration ------------------------------------------*/
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);
  /* ADC1 regular channel14 configuration */
  ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_13Cycles5);
  /* Enable ADC1 DMA */
  ADC_DMACmd(ADC1, ENABLE);
  /* Enable ADC1 external trigger */
  ADC_ExternalTrigConvCmd(ADC1, ENABLE);
  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);
  /* TIM1 counter enable */
  TIM1_Cmd(ENABLE);
  /* Test on channel1 transfer complete flag */

  while(!DMA_GetFlagStatus(DMA_FLAG_TC1));
  /* Clear channel1 transfer complete flag */
  DMA_ClearFlag(DMA_FLAG_TC1);
  /* TIM1 counter disable */
  TIM1_Cmd(DISABLE);

  while (1)
  {
  }
}

1万 · 2007-12-15 14:25

STM32?

只看该作者 · 2007-12-15 18:09

你能不能帮我一下
谢谢！！

只看该作者 · 2007-12-16 12:16

只看该作者 · 2007-12-18 12:43

在TIM1_TimeBaseInit(&TIM1_TimeBaseStructure);后面加下列语句

/*OC1 configuration */
  TIM1_OCInitStructure.TIM1_OCMode = TIM1_OCMode_Toggle;
  TIM1_OCInitStructure.TIM1_OutputState = TIM1_OutputState_Enable;
  TIM1_OCInitStructure.TIM1_OutputNState = TIM1_OutputNState_Enable;
  TIM1_OCInitStructure.TIM1_Pulse = 0;
  TIM1_OCInitStructure.TIM1_OCPolarity = TIM1_OCPolarity_Low;
  TIM1_OCInitStructure.TIM1_OCNPolarity = TIM1_OCNPolarity_High;
  TIM1_OCInitStructure.TIM1_OCIdleState = TIM1_OCIdleState_Set;
  TIM1_OCInitStructure.TIM1_OCNIdleState = TIM1_OCIdleState_Reset;
  TIM1_OC1Init(&TIM1_OCInitStructure);

  /* Automatic Output enable, Break, dead time and lock configuration*/
  TIM1_BDTRInitStructure.TIM1_OSSRState = TIM1_OSSRState_Enable;
  TIM1_BDTRInitStructure.TIM1_OSSIState = TIM1_OSSIState_Enable;
  TIM1_BDTRInitStructure.TIM1_LOCKLevel = TIM1_LOCKLevel_OFF;
  TIM1_BDTRInitStructure.TIM1_DeadTime = 0x01;
  TIM1_BDTRInitStructure.TIM1_Break = TIM1_Break_Enable;
  TIM1_BDTRInitStructure.TIM1_BreakPolarity = TIM1_BreakPolarity_High;
  TIM1_BDTRInitStructure.TIM1_AutomaticOutput = TIM1_AutomaticOutput_Enable;
  TIM1_BDTRConfig(&TIM1_BDTRInitStructure);

2万 · 2007-12-18 13:01

只看该作者 · 2007-12-21 13:07

jessemok 我看试了

还是不能开启AD呀

只看该作者 · 2007-12-21 14:04

thxcumt 你好，

好像你的程序是用ST函数库(ADC第二个例子）。

我看到你把injected channel的一部分去掉，这个没问题，但是你也把tim1的配置去掉,为什么（下面的一部分没了）?

/* Channel1 Configuration in PWM mode */
  TIM1_OCInitStructure.TIM1_OCMode = TIM1_OCMode_PWM1;
  TIM1_OCInitStructure.TIM1_OutputState = TIM1_OutputState_Enable;
  TIM1_OCInitStructure.TIM1_Pulse = 0x7F;
  TIM1_OCInitStructure.TIM1_OCPolarity = TIM1_OCPolarity_Low;
  TIM1_OC1Init(&TIM1_OCInitStructure);

Best Regards,
STF

只看该作者 · 2007-12-22 14:00

用TIM1触发采样我没用过，上面的只是在例子中测试的程序，我这边采样都没问题。可以发mai.c文件上来看看，可能是别的地方的问题

只看该作者 · 2007-12-22 22:32

我没有用到PWM输出，所以把他删掉了。

只看该作者 · 2007-12-22 22:35

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define ADC1_DR_Address    ((u32)0x4001244C)

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ADC_InitTypeDef           ADC_InitStructure;
DMA_InitTypeDef           DMA_InitStructure;
TIM1_TimeBaseInitTypeDef  TIM1_TimeBaseStructure;
TIM1_OCInitTypeDef         TIM1_OCInitStructure;
TIM1_BDTRInitTypeDef      TIM1_BDTRInitStructure;
u32 ADC_RegularConvertedValueTab;
ErrorStatus HSEStartUpStatus;

/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);

/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : main
* Description    : Main program
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif

  /* System clocks configuration ---------------------------------------------*/
  RCC_Configuration();

  /* NVIC configuration ------------------------------------------------------*/
  NVIC_Configuration();

  /* GPIO configuration ------------------------------------------------------*/
  GPIO_Configuration();

  /* TIM1 configuration ------------------------------------------------------*/
  TIM1_DeInit();
  /* Time Base configuration */
  TIM1_TimeBaseStructure.TIM1_Prescaler = 0x4;
  TIM1_TimeBaseStructure.TIM1_CounterMode = TIM1_CounterMode_Up;
  TIM1_TimeBaseStructure.TIM1_Period = 0xFF;
  TIM1_TimeBaseStructure.TIM1_ClockDivision = 0x0;
  TIM1_TimeBaseStructure.TIM1_RepetitionCounter = 0x0;
  TIM1_TimeBaseInit(&TIM1_TimeBaseStructure);

  /*OC1 configuration */
  TIM1_OCInitStructure.TIM1_OCMode = TIM1_OCMode_Toggle;
  TIM1_OCInitStructure.TIM1_OutputState = TIM1_OutputState_Enable;
  TIM1_OCInitStructure.TIM1_OutputNState = TIM1_OutputNState_Enable;
  TIM1_OCInitStructure.TIM1_Pulse = 0;
  TIM1_OCInitStructure.TIM1_OCPolarity = TIM1_OCPolarity_Low;
  TIM1_OCInitStructure.TIM1_OCNPolarity = TIM1_OCNPolarity_High;
  TIM1_OCInitStructure.TIM1_OCIdleState = TIM1_OCIdleState_Set;
  TIM1_OCInitStructure.TIM1_OCNIdleState = TIM1_OCIdleState_Reset;
  TIM1_OC1Init(&TIM1_OCInitStructure);

  /* Automatic Output enable, Break, dead time and lock configuration*/
  TIM1_BDTRInitStructure.TIM1_OSSRState = TIM1_OSSRState_Enable;
  TIM1_BDTRInitStructure.TIM1_OSSIState = TIM1_OSSIState_Enable;
  TIM1_BDTRInitStructure.TIM1_LOCKLevel = TIM1_LOCKLevel_OFF;
  TIM1_BDTRInitStructure.TIM1_DeadTime = 0x01;
  TIM1_BDTRInitStructure.TIM1_Break = TIM1_Break_Enable;
  TIM1_BDTRInitStructure.TIM1_BreakPolarity = TIM1_BreakPolarity_High;
  TIM1_BDTRInitStructure.TIM1_AutomaticOutput = TIM1_AutomaticOutput_Enable;
  TIM1_BDTRConfig(&TIM1_BDTRInitStructure);

  /* DMA Channel1 Configuration ----------------------------------------------*/
  DMA_DeInit(DMA_Channel1);
  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
  DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_RegularConvertedValueTab;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_BufferSize = 32;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(DMA_Channel1, &DMA_InitStructure);

  /* Enable DMA channel1 */
  DMA_Cmd(DMA_Channel1, ENABLE);

  /* ADC1 configuration ------------------------------------------------------*/
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);
  /* ADC1 regular channel14 configuration */
  ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_13Cycles5);
  /* Enable ADC1 DMA */
  ADC_DMACmd(ADC1, ENABLE);
  /* Enable ADC1 external trigger */
  ADC_ExternalTrigConvCmd(ADC1, ENABLE);
  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);
  /* TIM1 counter enable */
  TIM1_Cmd(ENABLE);


  /* Test on channel1 transfer complete flag */
  while(!DMA_GetFlagStatus(DMA_FLAG_TC1));
  /* Clear channel1 transfer complete flag */
  DMA_ClearFlag(DMA_FLAG_TC1);
  /* TIM1 counter disable */
  TIM1_Cmd(DISABLE);

  while (1)
  {
  }
}

/*******************************************************************************
* Function Name  : RCC_Configuration
* Description    : Configures the different system clocks.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void RCC_Configuration(void)
{
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
    /* Enable Prefetch Buffer */
    FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

    /* Flash 2 wait state */
    FLASH_SetLatency(FLASH_Latency_2);

    /* HCLK = SYSCLK */
    RCC_HCLKConfig(RCC_SYSCLK_Div1);

    /* PCLK2 = HCLK */
    RCC_PCLK2Config(RCC_HCLK_Div1);

    /* PCLK1 = HCLK/2 */
    RCC_PCLK1Config(RCC_HCLK_Div2);

    /* ADCCLK = PCLK2/4 */
    RCC_ADCCLKConfig(RCC_PCLK2_Div4);

    /* PLLCLK = 8MHz * 7 = 56 MHz */
    RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_7);

    /* Enable PLL */
    RCC_PLLCmd(ENABLE);

    /* Wait till PLL is ready */
    while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
    {
    }

    /* Select PLL as system clock source */
    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

    /* Wait till PLL is used as system clock source */
    while(RCC_GetSYSCLKSource() != 0x08)
    {
    }
  }

/* Enable peripheral clocks --------------------------------------------------*/
  /* Enable DMA clock */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA, ENABLE);

  /* Enable GPIOA, GPIOC, ADC1 and TIM1 clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC |
                         RCC_APB2Periph_ADC1 | RCC_APB2Periph_TIM1, ENABLE);
}

/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description    : Configures the different GPIO ports.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;


  /* Configure PC.01 and PC.04 (ADC Channel11 and Channel14) as analog input */
  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_4;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description    : Configures NVIC and Vector Table base location.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void NVIC_Configuration(void)
{

#ifdef  VECT_TAB_RAM
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif

}

只看该作者 · 2007-12-25 11:10

u32 ADC_RegularConvertedValueTab;改为u16 DC_RegularConvertedValueTab;
因为ADC是12位的，DMA传输字长也是HalfWord也就是16位。

stm32f103定时器1启动AD采样

什么芯片？

是的STM32

尿一个，看结果如何。

stm32f103定时器1启动AD采样

记下这个问题,等开发板到了再回答...(估计黄瓜菜都凉了~~~)

jessemok 我看试了

PWM configuration

把整个main文件发上来看看

STF 你好

jessemok你好，这是我的main.c你看看

修改如下

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