STM32能否用定时器输入捕获触发AD采样

/**

  ******************************************************************************

  * [url=home.php?mod=space&uid=288409]@file[/url]    ADC/TIMTrigger_AutoInjection/main.c 

  * [url=home.php?mod=space&uid=187600]@author[/url]  MCD Application Team

  * [url=home.php?mod=space&uid=895143]@version[/url] V3.5.0

  * [url=home.php?mod=space&uid=212281]@date[/url]    08-April-2011

  * [url=home.php?mod=space&uid=247401]@brief[/url]   Main program body

  ******************************************************************************

  * @attention

  *

  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE

  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY

  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING

  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE

  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

  *

  * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>

  ******************************************************************************

  */ 



/* Includes ------------------------------------------------------------------*/

#include "stm32f10x.h"



/** @addtogroup STM32F10x_StdPeriph_Examples

  * @{

  */



/** @addtogroup ADC_TIMTrigger_AutoInjection

  * @{

  */ 



/* Private typedef -----------------------------------------------------------*/

/* Private define ------------------------------------------------------------*/

#define ADC1_DR_Address    ((uint32_t)0x4001244C)



/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

ADC_InitTypeDef           ADC_InitStructure;

DMA_InitTypeDef           DMA_InitStructure;

TIM_TimeBaseInitTypeDef   TIM_TimeBaseStructure;

TIM_OCInitTypeDef         TIM_OCInitStructure;

__IO uint16_t ADC_RegularConvertedValueTab[32], ADC_InjectedConvertedValueTab[32];



/* Private function prototypes -----------------------------------------------*/

void RCC_Configuration(void);

void GPIO_Configuration(void);

  

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



/**

  * @brief   Main program

  * @param  None

  * @retval None

  */

int main(void)

{

  /*!< At this stage the microcontroller clock setting is already configured, 

       this is done through SystemInit() function which is called from startup

       file (startup_stm32f10x_xx.s) before to branch to application main.

       To reconfigure the default setting of SystemInit() function, refer to

       system_stm32f10x.c file

     */     

       

  /* System clocks configuration ---------------------------------------------*/

  RCC_Configuration();



  /* NVIC configuration ------------------------------------------------------*/

//  NVIC_Configuration();



  /* GPIO configuration ------------------------------------------------------*/

  GPIO_Configuration();



  /* TIM1 configuration ------------------------------------------------------*/ 

  /* Time Base configuration */

  TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); 

  TIM_TimeBaseStructure.TIM_Period = 1000;          

  TIM_TimeBaseStructure.TIM_Prescaler = 71;       

  TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;    

  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  

  TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

  /* TIM1 channel1 configuration in PWM mode */

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; 

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;                

  TIM_OCInitStructure.TIM_Pulse = 500; 

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;         

  TIM_OC1Init(TIM1, &TIM_OCInitStructure);



  /* DMA1 Channel1 Configuration ----------------------------------------------*/

  DMA_DeInit(DMA1_Channel1);

  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;

  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_RegularConvertedValueTab;

  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;

  DMA_InitStructure.DMA_BufferSize = 16;

  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_Circular;

  DMA_InitStructure.DMA_Priority = DMA_Priority_High;

  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;

  DMA_Init(DMA1_Channel1, &DMA_InitStructure);

  

  /* Enable DMA1 channel1 */

  DMA_Cmd(DMA1_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_71Cycles5);

  /* Set injected sequencer length */

  ADC_InjectedSequencerLengthConfig(ADC1, 1);

        

////  /* ADC1 injected channel Configuration */ 

////  ADC_InjectedChannelConfig(ADC1, ADC_Channel_11, 1, ADC_SampleTime_71Cycles5);

////  /* ADC1 injected external trigger configuration */

////  ADC_ExternalTrigInjectedConvConfig(ADC1, ADC_ExternalTrigInjecConv_None);



  /* Enable automatic injected conversion start after regular one */

  ADC_AutoInjectedConvCmd(ADC1, ENABLE);



  /* Enable ADC1 DMA */

  ADC_DMACmd(ADC1, ENABLE);



  /* Enable ADC1 external trigger */ 

  ADC_ExternalTrigConvCmd(ADC1, ENABLE);



////  /* Enable JEOC interrupt */

////  ADC_ITConfig(ADC1, ADC_IT_JEOC, ENABLE);



  /* Enable ADC1 */

  ADC_Cmd(ADC1, ENABLE);



  /* Enable ADC1 reset calibration register */   

  ADC_ResetCalibration(ADC1);

  /* Check the end of ADC1 reset calibration register */

  while(ADC_GetResetCalibrationStatus(ADC1));



  /* Start ADC1 calibration */

  ADC_StartCalibration(ADC1);

  /* Check the end of ADC1 calibration */

  while(ADC_GetCalibrationStatus(ADC1));



  /* TIM1 main Output Enable */

  TIM_CtrlPWMOutputs(TIM1, ENABLE);  

  while (1)

        {

                TIM_Cmd(TIM1, ENABLE);

                /* Test on channel1 transfer complete flag */

                while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));

                /* Clear channel1 transfer complete flag */

                DMA_ClearFlag(DMA1_FLAG_TC1); 

                /* TIM1 counter disable */

                TIM_Cmd(TIM1, DISABLE);

        }

}

/**

  * @brief  Configures the different system clocks.

  * @param  None

  * @retval None

  */

void RCC_Configuration(void)

{



  /* Enable peripheral clocks ------------------------------------------------*/

  /* Enable DMA1 clock */

  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);



  /* Enable GPIOA, GPIOC, ADC1 and TIM1 clock */

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC |

                         RCC_APB2Periph_ADC1 | RCC_APB2Periph_TIM1, ENABLE);

}



/**

  * @brief  Configures the different GPIO ports.

  * @param  None

  * @retval None

  */

void GPIO_Configuration(void)

{

  GPIO_InitTypeDef GPIO_InitStructure;



  /* Configure TIM1_CH1 (PA8) as alternate function push-pull */

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

  GPIO_Init(GPIOA, &GPIO_InitStructure);



  /* Configure PC.06 as output push-pull */

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

  GPIO_Init(GPIOC, &GPIO_InitStructure);



  /* Configure PC.01 and PC.04 (ADC Channel11 and Channel14) as analog input */

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_4;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;

  GPIO_Init(GPIOC, &GPIO_InitStructure);

}

#ifdef  USE_FULL_ASSERT



/**

  * @brief  Reports the name of the source file and the source line number

  *         where the assert_param error has occurred.

  * @param  file: pointer to the source file name

  * @param  line: assert_param error line source number

  * @retval None

  */

void assert_failed(uint8_t* file, uint32_t line)

{ 

  /* User can add his own implementation to report the file name and line number,

     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */



  /* Infinite loop */

  while (1)

  {

  }

}



#endif



/**

  * @}

  */ 



/**

  * @}

  */ 



/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/