21ic电子技术开发论坛 › 单片机与嵌入式系统 › ST MCU › STM32能否用定时器输入捕获触发AD采样
返回列表 发新帖我要提问

[STM32F1] STM32能否用定时器输入捕获触发AD采样

[复制链接]
2848|5
 楼主| 陈永宾0 发表于 2015-12-29 10:25 | 显示全部楼层 |阅读模式
AD采样, 触发, STM32, 定时器, D转换
本帖最后由 陈永宾0 于 2015-12-29 10:29 编辑

条件：STM32F103C8
定时器1的通道2 配置为输入捕获 上升沿触发
AD1配置为定时器1通道2触发ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC2;

输入捕获事件可以产生（可产生中断） 但是无法触发AD转换

如果配置定时器1通道2配置为PWM输出比较模式 是可以触发AD转换的

问：STM32是不是不支持定时器输入捕获触发AD转换呢？ 求解，，，，，，
回复

收藏 举报

相关帖子
lwsn 发表于 2015-12-29 22:35 | 显示全部楼层
应该支持吧，还是查看一下用户手册看看是怎么说的
回复

收藏 举报

天灵灵地灵灵 发表于 2015-12-29 23:17 | 显示全部楼层
MA采用：循环模式，在程序查询DMA完成标志即可判断一组数据有没有转换完成；

中断：定时器，DMA，ADC中断未使用；

参考程序：
main.rar (2.6 KB, 下载次数: 293)
回复

收藏 举报

稳稳の幸福 发表于 2015-12-30 00:02 | 显示全部楼层
复制
  1. /**
    

  2.   ******************************************************************************
    

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

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

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

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

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

  8.   ******************************************************************************
    

  9.   * @attention
    

  10.   *
    

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

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

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

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

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

  16.   * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
    

  17.   *
    

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

  19.   ******************************************************************************
    

  20.   */ 
    


  21. 

  22. /* Includes ------------------------------------------------------------------*/
    

  23. #include "stm32f10x.h"
    


  24. 

  25. /** @addtogroup STM32F10x_StdPeriph_Examples
    

  26.   * @{
    

  27.   */
    


  28. 

  29. /** @addtogroup ADC_TIMTrigger_AutoInjection
    

  30.   * @{
    

  31.   */ 
    


  32. 

  33. /* Private typedef -----------------------------------------------------------*/
    

  34. /* Private define ------------------------------------------------------------*/
    

  35. #define ADC1_DR_Address    ((uint32_t)0x4001244C)
    


  36. 

  37. /* Private macro -------------------------------------------------------------*/
    

  38. /* Private variables ---------------------------------------------------------*/
    

  39. ADC_InitTypeDef           ADC_InitStructure;
    

  40. DMA_InitTypeDef           DMA_InitStructure;
    

  41. TIM_TimeBaseInitTypeDef   TIM_TimeBaseStructure;
    

  42. TIM_OCInitTypeDef         TIM_OCInitStructure;
    

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


  44. 

  45. /* Private function prototypes -----------------------------------------------*/
    

  46. void RCC_Configuration(void);
    

  47. void GPIO_Configuration(void);
    

  48.   
    

  49. /* Private functions ---------------------------------------------------------*/
    


  50. 

  51. /**
    

  52.   * @brief   Main program
    

  53.   * @param  None
    

  54.   * @retval None
    

  55.   */
    

  56. int main(void)
    

  57. {
    

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

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

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

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

  62.        system_stm32f10x.c file
    

  63.      */     
    

  64.        
    

  65.   /* System clocks configuration ---------------------------------------------*/
    

  66.   RCC_Configuration();
    


  67. 

  68.   /* NVIC configuration ------------------------------------------------------*/
    

  69. //  NVIC_Configuration();
    


  70. 

  71.   /* GPIO configuration ------------------------------------------------------*/
    

  72.   GPIO_Configuration();
    


  73. 

  74.   /* TIM1 configuration ------------------------------------------------------*/ 
    

  75.   /* Time Base configuration */
    

  76.   TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); 
    

  77.   TIM_TimeBaseStructure.TIM_Period = 1000;          
    

  78.   TIM_TimeBaseStructure.TIM_Prescaler = 71;       
    

  79.   TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;    
    

  80.   TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  
    

  81.   TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
    

  82.   /* TIM1 channel1 configuration in PWM mode */
    

  83.   TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; 
    

  84.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;                
    

  85.   TIM_OCInitStructure.TIM_Pulse = 500; 
    

  86.   TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;         
    

  87.   TIM_OC1Init(TIM1, &TIM_OCInitStructure);
    


  88. 

  89.   /* DMA1 Channel1 Configuration ----------------------------------------------*/
    

  90.   DMA_DeInit(DMA1_Channel1);
    

  91.   DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
    

  92.   DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_RegularConvertedValueTab;
    

  93.   DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
    

  94.   DMA_InitStructure.DMA_BufferSize = 16;
    

  95.   DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    

  96.   DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    

  97.   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
    

  98.   DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
    

  99.   DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
    

  100.   DMA_InitStructure.DMA_Priority = DMA_Priority_High;
    

  101.   DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
    

  102.   DMA_Init(DMA1_Channel1, &DMA_InitStructure);
    

  103.   
    

  104.   /* Enable DMA1 channel1 */
    

  105.   DMA_Cmd(DMA1_Channel1, ENABLE);
    


  106. 

  107.   /* ADC1 configuration ------------------------------------------------------*/
    

  108.   ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
    

  109.   ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    

  110.   ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    

  111.   ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
    

  112.   ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    

  113.   ADC_InitStructure.ADC_NbrOfChannel = 1;
    

  114.   ADC_Init(ADC1, &ADC_InitStructure);
    


  115. 

  116.   /* ADC1 regular channel14 configuration */ 
    

  117.   ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_71Cycles5);
    

  118.   /* Set injected sequencer length */
    

  119.   ADC_InjectedSequencerLengthConfig(ADC1, 1);
    

  120.         
    

  121. ////  /* ADC1 injected channel Configuration */ 
    

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

  123. ////  /* ADC1 injected external trigger configuration */
    

  124. ////  ADC_ExternalTrigInjectedConvConfig(ADC1, ADC_ExternalTrigInjecConv_None);
    


  125. 

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

  127.   ADC_AutoInjectedConvCmd(ADC1, ENABLE);
    


  128. 

  129.   /* Enable ADC1 DMA */
    

  130.   ADC_DMACmd(ADC1, ENABLE);
    


  131. 

  132.   /* Enable ADC1 external trigger */ 
    

  133.   ADC_ExternalTrigConvCmd(ADC1, ENABLE);
    


  134. 

  135. ////  /* Enable JEOC interrupt */
    

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


  137. 

  138.   /* Enable ADC1 */
    

  139.   ADC_Cmd(ADC1, ENABLE);
    


  140. 

  141.   /* Enable ADC1 reset calibration register */   
    

  142.   ADC_ResetCalibration(ADC1);
    

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

  144.   while(ADC_GetResetCalibrationStatus(ADC1));
    


  145. 

  146.   /* Start ADC1 calibration */
    

  147.   ADC_StartCalibration(ADC1);
    

  148.   /* Check the end of ADC1 calibration */
    

  149.   while(ADC_GetCalibrationStatus(ADC1));
    


  150. 

  151.   /* TIM1 main Output Enable */
    

  152.   TIM_CtrlPWMOutputs(TIM1, ENABLE);  
    

  153.   while (1)
    

  154.         {
    

  155.                 TIM_Cmd(TIM1, ENABLE);
    

  156.                 /* Test on channel1 transfer complete flag */
    

  157.                 while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));
    

  158.                 /* Clear channel1 transfer complete flag */
    

  159.                 DMA_ClearFlag(DMA1_FLAG_TC1); 
    

  160.                 /* TIM1 counter disable */
    

  161.                 TIM_Cmd(TIM1, DISABLE);
    

  162.         }
    

  163. }
    

  164. /**
    

  165.   * @brief  Configures the different system clocks.
    

  166.   * @param  None
    

  167.   * @retval None
    

  168.   */
    

  169. void RCC_Configuration(void)
    

  170. {
    


  171. 

  172.   /* Enable peripheral clocks ------------------------------------------------*/
    

  173.   /* Enable DMA1 clock */
    

  174.   RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
    


  175. 

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

  177.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC |
    

  178.                          RCC_APB2Periph_ADC1 | RCC_APB2Periph_TIM1, ENABLE);
    

  179. }
    


  180. 

  181. /**
    

  182.   * @brief  Configures the different GPIO ports.
    

  183.   * @param  None
    

  184.   * @retval None
    

  185.   */
    

  186. void GPIO_Configuration(void)
    

  187. {
    

  188.   GPIO_InitTypeDef GPIO_InitStructure;
    


  189. 

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

  191.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
    

  192.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    

  193.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    

  194.   GPIO_Init(GPIOA, &GPIO_InitStructure);
    


  195. 

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

  197.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
    

  198.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    

  199.   GPIO_Init(GPIOC, &GPIO_InitStructure);
    


  200. 

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

  202.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_4;
    

  203.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    

  204.   GPIO_Init(GPIOC, &GPIO_InitStructure);
    

  205. }
    

  206. #ifdef  USE_FULL_ASSERT
    


  207. 

  208. /**
    

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

  210.   *         where the assert_param error has occurred.
    

  211.   * @param  file: pointer to the source file name
    

  212.   * @param  line: assert_param error line source number
    

  213.   * @retval None
    

  214.   */
    

  215. void assert_failed(uint8_t* file, uint32_t line)
    

  216. { 
    

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

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


  219. 

  220.   /* Infinite loop */
    

  221.   while (1)
    

  222.   {
    

  223.   }
    

  224. }
    


  225. 

  226. #endif
    


  227. 

  228. /**
    

  229.   * @}
    

  230.   */ 
    


  231. 

  232. /**
    

  233.   * @}
    

  234.   */ 
    


  235. 

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


回复

收藏 举报

sonicll 发表于 2020-9-28 18:04 | 显示全部楼层
手册上写的timer事件可以触发ADC，实际上只有比较模式的事件才能触发ADC，捕获事件不行
回复

收藏 举报

香水城 发表于 2020-9-29 14:00 | 显示全部楼层
本帖最后由 香水城 于 2020-9-29 14:02 编辑

这个骨灰级的帖子翻出来了。

整体上，定时器的捕获/比较事件是可以作为ADC的触发事件的，但在具体应用时要结合具体通道来看。
因为不是所有通道的输入捕获或比较输出事件都可以用来触发ADC。  

   /*!< ADC group regular conversion trigger from external peripheral: TIM1 channel 4 event (capture compare: input capture or output capture). Trigger edge set to rising edge (default setting). */
这点要查看手册 或者 通过CUBEMX配置时即可得到确认。

回复

收藏 举报

返回列表 发新帖
高级模式
B Color Image Link Quote Code Smilies
您需要登录后才可以回帖 登录 | 注册

本版积分规则

陈永宾0

4

主题

967

帖子

1

粉丝
快速回复 在线客服 返回列表 返回顶部