STM32利用DMA+TIME+ADC产生正玄波程序 -

标题: STM32利用DMA+TIME+ADC产生正玄波程序 [打印本页]

作者: bmw1989 时间: 2019-5-8 14:32
标题: STM32利用DMA+TIME+ADC产生正玄波程序
/**
  ******************************************************************************
  * @file DAC/DualModeDMA_SineWave/main.c
  * @author  MCD Application Team
  * @version  V3.0.0
  * @date  04/06/2009
  * @brief  Main program body.
  ******************************************************************************
  * @copy
  *
  * 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 2009 STMicroelectronics</center></h2>
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "LED.h"

/** @addtogroup StdPeriph_Examples
  * @{
  */

/** @addtogroup DAC_DualModeDMA_SineWave
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define DAC_DHR12R1    0x40007408
#define DAC_DHR12R2             0x40007414
#define Sin_Out_500Hz       0x8B6
#define Sin_Out_1KHz          0x456
#define Sin_Out_2KHz          0x235
#define Sin_Out_3KHz          0x17A
#define Sin_Out_4KHz          0x119
#define Sin_Out_5KHz          0xE0
#define Sin_Out_10KHz          0x6F
#define Sin_Out_15KHz          0x4A

/* Init Structure definition */
DAC_InitTypeDef          DAC_InitStructure;
DMA_InitTypeDef          DMA_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

/* Private macro -------------------------------------------------------------*/
/* Private variables --------------------------------------------------------- */
const uint16_t Sine12bit[258] = { 2048, 2098, 2148, 2198, 2248, 2298, 2348, 2398, 2447, 2496,
2545, 2594, 2642, 2690, 2737, 2785, 2831, 2877, 2923, 2968,
3013, 3057, 3100, 3143, 3185, 3227, 3267, 3307, 3347, 3385,
3423, 3460, 3496, 3531, 3565, 3598, 3631, 3662, 3692, 3722,
3750, 3778, 3804, 3829, 3854, 3877, 3899, 3920, 3940, 3958,
3976, 3992, 4007, 4021, 4034, 4046, 4056, 4065, 4073, 4080,
4086, 4090, 4093, 4095, 4095, 4095, 4093, 4090, 4086, 4080,
4073, 4065, 4056, 4046, 4034, 4021, 4007, 3992, 3976, 3958,
3940, 3920, 3899, 3877, 3854, 3829, 3804, 3778, 3750, 3722,
3692, 3662, 3631, 3598, 3565, 3531, 3496, 3460, 3423, 3385,
3347, 3307, 3267, 3227, 3185, 3143, 3100, 3057, 3013, 2968,
2923, 2877, 2831, 2785, 2737, 2690, 2642, 2594, 2545, 2496,
2447, 2398, 2348, 2298, 2248, 2198, 2148, 2098, 2047, 1997,
1947, 1897, 1847, 1797, 1747, 1697, 1648, 1599, 1550, 1501,
1453, 1405, 1358, 1310, 1264, 1218, 1172, 1127, 1082, 1038,
995, 952, 910, 868, 828, 788, 748, 710, 672, 635,
599, 564, 530, 497, 464, 433, 403, 373, 345, 317,
291, 266, 241, 218, 196, 175, 155, 137, 119, 103,
88, 74, 61, 49, 39, 30, 22, 15, 9, 5,
2, 0, 0, 0, 2, 5, 9, 15, 22, 30,
39, 49, 61, 74, 88, 103, 119, 137, 155, 175,
196, 218, 241, 266, 291, 317, 345, 373, 403, 433,
464, 497, 530, 564, 599, 635, 672, 710, 748, 788,
828, 868, 910, 952, 995, 1038, 1082, 1127, 1172, 1218,
1264, 1310, 1358, 1405, 1453, 1501, 1550, 1599, 1648, 1697,
1747, 1797, 1847, 1897, 1947, 1997 };

/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void Delay(__IO uint32_t nCount);
void Delay_500ms()
{
u32 i,j;
for (i=0; i<0x125; i++)
for (j=0;j<3800;j++);
}

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

/**
  * @brief  Main program.
  * @param  None
  * @retval : None
  */
int main(void)
{
  /* System Clocks Configuration */
  RCC_Configuration();

  /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically
   connected to the DAC converter. In order to avoid parasitic consumption,
   the GPIO pin should be configured in analog */
  GPIO_Configuration();
  LED_Init();

  /* TIM8 Configuration */
  /* Time base configuration */
  TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
  TIM_TimeBaseStructure.TIM_Period = Sin_Out_2KHz; //正弦波1频率设置
  TIM_TimeBaseStructure.TIM_Prescaler = 0x0;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM6, &TIM_TimeBaseStructure);

  TIM_TimeBaseStructure.TIM_Period = Sin_Out_3KHz; //正弦波2频率设置
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

  /* TIM8 TRGO selection */
  TIM_SelectOutputTrigger(TIM6, TIM_TRGOSource_Update);
  TIM_SelectOutputTrigger(TIM2, TIM_TRGOSource_Update);

  /* DAC channel1 Configuration */
  DAC_StructInit(&DAC_InitStructure);
  DAC_InitStructure.DAC_Trigger = DAC_Trigger_T2_TRGO;       //指定DAC1的触发定时器
  DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
  DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable;
  DAC_Init(DAC_Channel_1, &DAC_InitStructure);

  /* DAC channel2 Configuration */
  DAC_InitStructure.DAC_Trigger = DAC_Trigger_T6_TRGO;       //指定DAC2的触发定时器
  DAC_Init(DAC_Channel_2, &DAC_InitStructure);

  /* DMA2 channel2 configuration */
  DMA_DeInit(DMA2_Channel3);
  DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR12R1; //指定DMA2通道3的目标地址为DAC1_DHR12R1
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&Sine12bit;       //指定DMA的源地址为数组Sine12bit
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
  DMA_InitStructure.DMA_BufferSize = 256;
  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_VeryHigh;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(DMA2_Channel3, &DMA_InitStructure);

  /* DMA2 channel3 configuration */
  DMA_DeInit(DMA2_Channel4);
  DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR12R2;       //指定DMA2通道3的目标地址为DAC2_DHR12R2
  DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
  DMA_Init(DMA2_Channel4, &DMA_InitStructure);

  /* Enable DMA2 Channel2 */
  DMA_Cmd(DMA2_Channel3, ENABLE);
  /* Enable DMA2 Channel2 */
  DMA_Cmd(DMA2_Channel4, ENABLE);

  /* Enable DAC Channel1: Once the DAC channel1 is enabled, PA.04 is
   automatically connected to the DAC converter. */
  DAC_Cmd(DAC_Channel_1, ENABLE);
  /* Enable DAC Channel2: Once the DAC channel2 is enabled, PA.05 is
   automatically connected to the DAC converter. */
  DAC_Cmd(DAC_Channel_2, ENABLE);

  /* Enable DMA for DAC Channel1 */
  DAC_DMACmd(DAC_Channel_1, ENABLE);
  /* Enable DMA for DAC Channel2 */
  DAC_DMACmd(DAC_Channel_2, ENABLE);

  /* TIM2 enable counter */
  TIM_Cmd(TIM2, ENABLE);
  /* TIM2 enable counter */
  TIM_Cmd(TIM6, ENABLE);

  while (1)
  {
LED_R_ON(0);
LED_B_ON(0);
LED_G_ON(1);
      Delay_500ms();

      LED_R_ON(0);
      LED_B_ON(1);
      LED_G_ON(0);
      Delay_500ms();

      LED_R_ON(1);
      LED_B_ON(0);
      LED_G_ON(0);
      Delay_500ms();

      LED_R_ON(0);
      LED_B_ON(0);
      LED_G_ON(0);
      Delay_500ms();
  }
}

/**
  * @brief  Configures the different system clocks.
  * @param  None
  * @retval : None
  */
void RCC_Configuration(void)
{
  /* Setup the microcontroller system. Initialize the Embedded Flash Interface,
   initialize the PLL and update the SystemFrequency variable. */
  SystemInit();

/* Enable peripheral clocks --------------------------------------------------*/
  /* DMA clock enable */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
  /* GPIOA Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA, ENABLE);
  /* DAC Periph clock enable */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
  /* TIM8 Periph clock enable */
/* TIM8 Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2|RCC_APB1Periph_TIM6, ENABLE);
}

/**
  * @brief  Configures the different GPIO ports.
  * @param  None
  * @retval : None
  */
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically
   connected to the DAC converter. In order to avoid parasitic consumption,
   the GPIO pin should be configured in analog */
  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_4 | GPIO_Pin_5;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

}

/**
  * @brief  Inserts a delay time.
  * @param nCount: specifies the delay time length.
  * @retval : None
  */
void Delay(__IO uint32_t nCount)
{
  for(; nCount != 0; nCount--);
}

#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 2009 STMicroelectronics *****END OF FILE****/

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TwoChannels_SineWave.7z (153.99 KB, 下载次数: 23)

作者: colinh 时间: 2019-5-10 14:50
STM32不带DA的吧？请问DA采用的什么芯片？

作者: bmw1989 时间: 2019-5-12 16:59

colinh 发表于 2019-5-10 14:50
STM32不带DA的吧？请问DA采用的什么芯片？

STM32自带DA的，可以直接输出正弦波

作者: zyb329321151 时间: 2019-5-13 16:53
下载了，先学习学习。

作者: zyb329321151 时间: 2019-5-13 17:00
代码里面缺少这个stm32f10x_lib.h文件呀

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