cube生成的LL库DAC输出正弦波的遇到的问题(芯片是STM32L432KBUx)

明我长相忆 · 发表于 2020-4-10 13:46:35

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file          : main.c
  * @brief       : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>© Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                      opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
uint32_t Sine12bit[256] = {
//正弦波描点
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
};
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_DAC1_Init(void);
static void MX_TIM2_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
  /* USER CODE END 1 */
  /* MCU Configuration--------------------------------------------------------*/
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
  NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
  /* System interrupt init*/
  /* USER CODE BEGIN Init */
  /* USER CODE END Init */
  /* Configure the system clock */
  SystemClock_Config();
  /* USER CODE BEGIN SysInit */
  /* USER CODE END SysInit */
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_DAC1_Init();
  MX_TIM2_Init();
  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  LL_FLASH_SetLatency(LL_FLASH_LATENCY_4);
  if(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_4)
  {
  Error_Handler();
  }
  LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE1);
  LL_RCC_MSI_Enable();
/* Wait till MSI is ready */
  while(LL_RCC_MSI_IsReady() != 1)
  {

  }
  LL_RCC_MSI_EnableRangeSelection();
  LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_6);
  LL_RCC_MSI_SetCalibTrimming(0);
  LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_MSI, LL_RCC_PLLM_DIV_1, 40, LL_RCC_PLLR_DIV_2);
  LL_RCC_PLL_EnableDomain_SYS();
  LL_RCC_PLL_Enable();
/* Wait till PLL is ready */
  while(LL_RCC_PLL_IsReady() != 1)
  {

  }
  LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
/* Wait till System clock is ready */
  while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
  {

  }
  LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
  LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);
  LL_Init1msTick(80000000);
  LL_SetSystemCoreClock(80000000);
}
/**
  * @brief DAC1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_DAC1_Init(void)
{
  /* USER CODE BEGIN DAC1_Init 0 */
  /* USER CODE END DAC1_Init 0 */
  LL_DAC_InitTypeDef DAC_InitStruct = {0};
  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
  /* Peripheral clock enable */
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_DAC1);

  LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
  /**DAC1 GPIO Configuration
  PA4 ------> DAC1_OUT1
  */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_4;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  /* DAC1 DMA Init */

  /* DAC_CH1 Init */
  LL_DMA_SetPeriphRequest(DMA2, LL_DMA_CHANNEL_4, LL_DMA_REQUEST_3);
  LL_DMA_SetDataTransferDirection(DMA2, LL_DMA_CHANNEL_4, LL_DMA_DIRECTION_MEMORY_TO_PERIPH);
  LL_DMA_SetChannelPriorityLevel(DMA2, LL_DMA_CHANNEL_4, LL_DMA_PRIORITY_VERYHIGH);
  LL_DMA_SetMode(DMA2, LL_DMA_CHANNEL_4, LL_DMA_MODE_CIRCULAR);
  LL_DMA_SetPeriphIncMode(DMA2, LL_DMA_CHANNEL_4, LL_DMA_PERIPH_NOINCREMENT);
  LL_DMA_SetMemoryIncMode(DMA2, LL_DMA_CHANNEL_4, LL_DMA_MEMORY_INCREMENT);
  LL_DMA_SetPeriphSize(DMA2, LL_DMA_CHANNEL_4, LL_DMA_PDATAALIGN_HALFWORD);
  LL_DMA_SetMemorySize(DMA2, LL_DMA_CHANNEL_4, LL_DMA_MDATAALIGN_HALFWORD);
  /* USER CODE BEGIN DAC1_Init 1 */

//uint32_t DstAddr = LL_DAC_DMA_GetRegAddr(DAC1, LL_DAC_CHANNEL_1, LL_DAC_DMA_REG_DATA_12BITS_RIGHT_ALIGNED);

LL_DMA_ConfigAddresses(DMA2, LL_DMA_CHANNEL_4, (uint32_t)&Sine12bit[0],
         LL_DAC_DMA_GetRegAddr(DAC1, LL_DAC_CHANNEL_1, LL_DAC_DMA_REG_DATA_12BITS_RIGHT_ALIGNED),
         LL_DMA_DIRECTION_MEMORY_TO_PERIPH);
//配置源地址和目标地址。注意:当DMA通道被激活时，这个API不能被调用。每个使用DMA的IP都提供了一个API来直接获取注册地址(LL_PPP_DMA_GetRegAddr)

LL_DMA_SetDataLength(DMA2, LL_DMA_CHANNEL_4, 256);

LL_DMA_EnableIT_TC(DMA2, LL_DMA_CHANNEL_4);

LL_DMA_EnableChannel(DMA2, LL_DMA_CHANNEL_4);
  /* USER CODE END DAC1_Init 1 */
  /** DAC channel OUT1 config
  */
  DAC_InitStruct.TriggerSource = LL_DAC_TRIG_EXT_TIM2_TRGO;
  DAC_InitStruct.WaveAutoGeneration = LL_DAC_WAVE_AUTO_GENERATION_NONE;
  DAC_InitStruct.OutputBuffer = LL_DAC_OUTPUT_BUFFER_ENABLE;
  DAC_InitStruct.OutputConnection = LL_DAC_OUTPUT_CONNECT_GPIO;
  DAC_InitStruct.OutputMode = LL_DAC_OUTPUT_MODE_NORMAL;
  LL_DAC_Init(DAC1, LL_DAC_CHANNEL_1, &DAC_InitStruct);
  LL_DAC_EnableTrigger(DAC1, LL_DAC_CHANNEL_1);
  /* USER CODE BEGIN DAC1_Init 2 */

LL_DAC_EnableDMAReq(DAC1, LL_DAC_CHANNEL_1);  //启用所选信道的DAC DMA传输请求。 //要配置DMA源地址(外围地址)，请使用函数LL_DAC_DMA_GetRegAddr()

LL_DAC_Enable(DAC1, LL_DAC_CHANNEL_1);    //启用DAC通道

//LL_DAC_IsDMAReqEnabled(DAC1, LL_DAC_CHANNEL_1); //获取所选信道的DAC DMA传输请求状态。

  /* USER CODE END DAC1_Init 2 */
}
/**
  * @brief TIM2 Initialization Function
  * @param None
  * @retval None
  */
static void MX_TIM2_Init(void)
{
  /* USER CODE BEGIN TIM2_Init 0 */
  /* USER CODE END TIM2_Init 0 */
  LL_TIM_InitTypeDef TIM_InitStruct = {0};
  /* Peripheral clock enable */
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM2);
  /* USER CODE BEGIN TIM2_Init 1 */
  /* USER CODE END TIM2_Init 1 */
  TIM_InitStruct.Prescaler = 7;
  TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
  TIM_InitStruct.Autoreload = 399;
  TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
  LL_TIM_Init(TIM2, &TIM_InitStruct);
  LL_TIM_DisableARRPreload(TIM2);
  LL_TIM_SetClockSource(TIM2, LL_TIM_CLOCKSOURCE_INTERNAL);
  LL_TIM_SetTriggerOutput(TIM2, LL_TIM_TRGO_UPDATE);
  LL_TIM_DisableMasterSlaveMode(TIM2);
  /* USER CODE BEGIN TIM2_Init 2 */
LL_TIM_EnableIT_UPDATE(TIM2);
LL_TIM_EnableCounter(TIM2);
LL_TIM_EnableUpdateEvent(TIM6);
  /* USER CODE END TIM2_Init 2 */
}
/**
  * Enable DMA controller clock
  */
static void MX_DMA_Init(void)
{
  /* Init with LL driver */
  /* DMA controller clock enable */
  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMA2);
  /* DMA interrupt init */
  /* DMA2_Channel4_IRQn interrupt configuration */
  NVIC_SetPriority(DMA2_Channel4_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
  NVIC_EnableIRQ(DMA2_Channel4_IRQn);
}
/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  /* GPIO Ports Clock Enable */
  LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  /* USER CODE END Error_Handler_Debug */
}
#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 CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
   tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */