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[STM32U5] 【NUCLEO-U575ZI-Q测评】DAC

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 楼主| 比神乐 发表于 2023-2-26 13:35 | 显示全部楼层 |阅读模式
AC, DAC, NUC, Nucleo
今天搞了一下DAC，通道1，PA4。
原理图：
2.jpg
代码：
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  1. #include "main.h"
    


  2. 

  3. /* Private includes ----------------------------------------------------------*/
    

  4. /* USER CODE BEGIN Includes */
    


  5. 

  6. /* USER CODE END Includes */
    


  7. 

  8. /* Private typedef -----------------------------------------------------------*/
    

  9. /* USER CODE BEGIN PTD */
    


  10. 

  11. /* USER CODE END PTD */
    


  12. 

  13. /* Private define ------------------------------------------------------------*/
    

  14. /* USER CODE BEGIN PD */
    


  15. 

  16. /* USER CODE END PD */
    


  17. 

  18. /* Private macro -------------------------------------------------------------*/
    

  19. /* USER CODE BEGIN PM */
    


  20. 

  21. /* USER CODE END PM */
    


  22. 

  23. /* Private variables ---------------------------------------------------------*/
    


  24. 

  25. DAC_HandleTypeDef hdac1;
    


  26. 

  27. /* USER CODE BEGIN PV */
    

  28. /* Private variables ---------------------------------------------------------*/
    

  29. __IO uint32_t UserButtonStatus = 0;  /* set to 1 after Wkup/Tamper push-button interrupt  */
    

  30. /* USER CODE END PV */
    


  31. 

  32. /* Private function prototypes -----------------------------------------------*/
    

  33. void SystemClock_Config(void);
    

  34. static void SystemPower_Config(void);
    

  35. static void MX_ICACHE_Init(void);
    

  36. static void MX_GPIO_Init(void);
    

  37. static void MX_DAC1_Init(void);
    

  38. /* USER CODE BEGIN PFP */
    

  39. /* Private function prototypes -----------------------------------------------*/
    

  40. /* USER CODE END PFP */
    


  41. 

  42. /* Private user code ---------------------------------------------------------*/
    

  43. /* USER CODE BEGIN 0 */
    


  44. 

  45. /* USER CODE END 0 */
    


  46. 

  47. /**
    

  48.   * [url=home.php?mod=space&uid=247401]@brief[/url]  The application entry point.
    

  49.   * @retval int
    

  50.   */
    

  51. int main(void)
    

  52. {
    

  53.   /* USER CODE BEGIN 1 */
    

  54.   DAC_ChannelConfTypeDef sConfig;
    


  55. 

  56.   /* STM32U5xx HAL library initialization:
    

  57.        - Configure the Flash prefetch
    

  58.        - Configure the Systick to generate an interrupt each 1 msec
    

  59.        - Set NVIC Group Priority to 3
    

  60.        - Low Level Initialization
    

  61.      */
    

  62.   /* USER CODE END 1 */
    


  63. 

  64.   /* MCU Configuration--------------------------------------------------------*/
    


  65. 

  66.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    

  67.   HAL_Init();
    


  68. 

  69.   /* USER CODE BEGIN Init */
    


  70. 

  71.   /* USER CODE END Init */
    


  72. 

  73.   /* Configure the system clock */
    

  74.   SystemClock_Config();
    


  75. 

  76.   /* Configure the System Power */
    

  77.   SystemPower_Config();
    


  78. 

  79.   /* USER CODE BEGIN SysInit */
    


  80. 

  81.   /* USER CODE END SysInit */
    


  82. 

  83.   /* Initialize all configured peripherals */
    

  84.   MX_ICACHE_Init();
    

  85.   MX_GPIO_Init();
    

  86.   MX_DAC1_Init();
    

  87.   /* USER CODE BEGIN 2 */
    


  88. 

  89.   /* Configure LED3 */
    

  90.   BSP_LED_Init(LED3);
    


  91. 

  92.   /* Initialize the Wkup/Tamper push-button.
    

  93.      It is used for changing the gain */
    

  94.   BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);
    

  95.   /*##########################################################################*/
    

  96.   /*## NORMAL POWER MODE #####################################################*/
    


  97. 

  98.   /*##-0- Set DAC Channel1 DHR register ######################################*/
    

  99.   if (HAL_DAC_SetValue(&hdac1, DAC_CHANNEL_1, DAC_ALIGN_8B_R, 0xFF) != HAL_OK)
    

  100.   {
    

  101.     /* Setting value Error */
    

  102.     Error_Handler();
    

  103.   }
    


  104. 

  105.   /*##-1- Enable DAC Channel1 ################################################*/
    

  106.   if (HAL_DAC_Start(&hdac1, DAC_CHANNEL_1) != HAL_OK)
    

  107.   {
    

  108.     /* Start Error */
    

  109.     Error_Handler();
    

  110.   }
    


  111. 

  112.   /*##########################################################################*/
    

  113.   /*## LOW POWER MODE ########################################################*/
    


  114. 

  115.   /* Wait UserButtonStatus pushed */
    

  116.   while (UserButtonStatus == 0)
    

  117.   {
    

  118.   }
    

  119.   UserButtonStatus = 0;
    


  120. 


  121. 

  122.   if (HAL_DAC_Stop(&hdac1, DAC_CHANNEL_1) != HAL_OK)
    

  123.   {
    

  124.     /* Start Error */
    

  125.     Error_Handler();
    

  126.   }
    


  127. 

  128.   /*## DeInit the DAC peripheral ##########################################*/
    

  129.   if (HAL_DAC_DeInit(&hdac1) != HAL_OK)
    

  130.   {
    

  131.     /* Initialization Error */
    

  132.     Error_Handler();
    

  133.   }
    


  134. 

  135.   /*## Configure the DAC peripheral #######################################*/
    

  136.   if (HAL_DAC_Init(&hdac1) != HAL_OK)
    

  137.   {
    

  138.     /* Initialization Error */
    

  139.     Error_Handler();
    

  140.   }
    


  141. 

  142.   /*## Configure DAC channel1 #############################################*/
    

  143.   sConfig.DAC_SampleAndHold = DAC_SAMPLEANDHOLD_ENABLE;
    


  144. 

  145.   if (HAL_DAC_ConfigChannel(&hdac1, &sConfig, DAC_CHANNEL_1) != HAL_OK)
    

  146.   {
    

  147.     /* Channel configuration Error */
    

  148.     Error_Handler();
    

  149.   }
    


  150. 

  151.   /*## Set DAC Channel1 DHR register ######################################*/
    

  152.   if (HAL_DAC_SetValue(&hdac1, DAC_CHANNEL_1, DAC_ALIGN_8B_R, 0xFF) != HAL_OK)
    

  153.   {
    

  154.     /* Setting value Error */
    

  155.     Error_Handler();
    

  156.   }
    


  157. 

  158.   /*## Enable DAC Channel1 ################################################*/
    

  159.   if (HAL_DAC_Start(&hdac1, DAC_CHANNEL_1) != HAL_OK)
    

  160.   {
    

  161.     /* Start Error */
    

  162.     Error_Handler();
    

  163.   }
    


  164. 

  165.   /*Suspend Tick increment to prevent wakeup by Systick interrupt. 
    

  166.   Otherwise the Systick interrupt will wake up the device within 1ms (HAL time base)*/
    

  167.   HAL_SuspendTick();
    


  168. 

  169.   /* Enter SLEEP Mode , wake up is done once Key push button is pressed */  
    

  170.  HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
    

  171.   /* USER CODE END 2 */
    


  172. 

  173.   /* Infinite loop */
    

  174.   /* USER CODE BEGIN WHILE */
    

  175.   while (1)
    

  176.   {
    

  177.     /* USER CODE END WHILE */
    


  178. 

  179.     /* USER CODE BEGIN 3 */
    


  180. 

  181.   }
    

  182.   /* USER CODE END 3 */
    

  183. }
    


  184. 

  185. /**
    

  186.   * @brief System Clock Configuration
    

  187.   * @retval None
    

  188.   */
    

  189. void SystemClock_Config(void)
    

  190. {
    

  191.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    

  192.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
    


  193. 

  194.   /** Configure the main internal regulator output voltage
    

  195.   */
    

  196.   if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
    

  197.   {
    

  198.     Error_Handler();
    

  199.   }
    


  200. 

  201.   /** Initializes the CPU, AHB and APB busses clocks
    

  202.   */
    

  203.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI
    

  204.                               |RCC_OSCILLATORTYPE_MSI;
    

  205.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    

  206.   RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
    

  207.   RCC_OscInitStruct.LSIState = RCC_LSI_ON;
    

  208.   RCC_OscInitStruct.MSIState = RCC_MSI_ON;
    

  209.   RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
    

  210.   RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_4;
    

  211.   RCC_OscInitStruct.LSIDiv = RCC_LSI_DIV1;
    

  212.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    

  213.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
    

  214.   RCC_OscInitStruct.PLL.PLLMBOOST = RCC_PLLMBOOST_DIV1;
    

  215.   RCC_OscInitStruct.PLL.PLLM = 1;
    

  216.   RCC_OscInitStruct.PLL.PLLN = 80;
    

  217.   RCC_OscInitStruct.PLL.PLLP = 2;
    

  218.   RCC_OscInitStruct.PLL.PLLQ = 2;
    

  219.   RCC_OscInitStruct.PLL.PLLR = 2;
    

  220.   RCC_OscInitStruct.PLL.PLLRGE = RCC_PLLVCIRANGE_0;
    

  221.   RCC_OscInitStruct.PLL.PLLFRACN = 0;
    

  222.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    

  223.   {
    

  224.     Error_Handler();
    

  225.   }
    


  226. 

  227.   /** Initializes the CPU, AHB and APB busses clocks
    

  228.   */
    

  229.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
    

  230.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
    

  231.                               |RCC_CLOCKTYPE_PCLK3;
    

  232.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
    

  233.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    

  234.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    

  235.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
    

  236.   RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;
    


  237. 

  238.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
    

  239.   {
    

  240.     Error_Handler();
    

  241.   }
    

  242. }
    


  243. 

  244. /**
    

  245.   * @brief Power Configuration
    

  246.   * @retval None
    

  247.   */
    

  248. static void SystemPower_Config(void)
    

  249. {
    


  250. 

  251.   /*
    

  252.    * Disable the internal Pull-Up in Dead Battery pins of UCPD peripheral
    

  253.    */
    

  254.   HAL_PWREx_DisableUCPDDeadBattery();
    


  255. 

  256.   /*
    

  257.    * Switch to SMPS regulator instead of LDO
    

  258.    */
    

  259.   if (HAL_PWREx_ConfigSupply(PWR_SMPS_SUPPLY) != HAL_OK)
    

  260.   {
    

  261.     Error_Handler();
    

  262.   }
    

  263. }
    


  264. 

  265. /**
    

  266.   * @brief DAC1 Initialization Function
    

  267.   * @param None
    

  268.   * @retval None
    

  269.   */
    

  270. static void MX_DAC1_Init(void)
    

  271. {
    


  272. 

  273.   /* USER CODE BEGIN DAC1_Init 0 */
    


  274. 

  275.   /* USER CODE END DAC1_Init 0 */
    


  276. 

  277.   DAC_ChannelConfTypeDef sConfig = {0};
    

  278.   DAC_AutonomousModeConfTypeDef sAutonomousMode = {0};
    


  279. 

  280.   /* USER CODE BEGIN DAC1_Init 1 */
    


  281. 

  282.   /* USER CODE END DAC1_Init 1 */
    


  283. 

  284.   /** DAC Initialization
    

  285.   */
    

  286.   hdac1.Instance = DAC1;
    

  287.   if (HAL_DAC_Init(&hdac1) != HAL_OK)
    

  288.   {
    

  289.     Error_Handler();
    

  290.   }
    


  291. 

  292.   /** DAC channel OUT1 config
    

  293.   */
    

  294.   sConfig.DAC_HighFrequency = DAC_HIGH_FREQUENCY_INTERFACE_MODE_DISABLE;
    

  295.   sConfig.DAC_DMADoubleDataMode = DISABLE;
    

  296.   sConfig.DAC_SignedFormat = DISABLE;
    

  297.   sConfig.DAC_SampleAndHold = DAC_SAMPLEANDHOLD_ENABLE;
    

  298.   sConfig.DAC_Trigger = DAC_TRIGGER_NONE;
    

  299.   sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
    

  300.   sConfig.DAC_ConnectOnChipPeripheral = DAC_CHIPCONNECT_EXTERNAL;
    

  301.   sConfig.DAC_UserTrimming = DAC_TRIMMING_FACTORY;
    

  302.   sConfig.DAC_SampleAndHoldConfig.DAC_SampleTime = 20;
    

  303.   sConfig.DAC_SampleAndHoldConfig.DAC_HoldTime = 10;
    

  304.   sConfig.DAC_SampleAndHoldConfig.DAC_RefreshTime = 5;
    

  305.   if (HAL_DAC_ConfigChannel(&hdac1, &sConfig, DAC_CHANNEL_1) != HAL_OK)
    

  306.   {
    

  307.     Error_Handler();
    

  308.   }
    


  309. 

  310.   /** Configure Autonomous Mode
    

  311.   */
    

  312.   sAutonomousMode.AutonomousModeState = DAC_AUTONOMOUS_MODE_DISABLE;
    

  313.   if (HAL_DACEx_SetConfigAutonomousMode(&hdac1, &sAutonomousMode) != HAL_OK)
    

  314.   {
    

  315.     Error_Handler();
    

  316.   }
    

  317.   /* USER CODE BEGIN DAC1_Init 2 */
    


  318. 

  319.   /* USER CODE END DAC1_Init 2 */
    


  320. 

  321. }
    


  322. 

  323. /**
    

  324.   * @brief ICACHE Initialization Function
    

  325.   * @param None
    

  326.   * @retval None
    

  327.   */
    

  328. static void MX_ICACHE_Init(void)
    

  329. {
    


  330. 

  331.   /* USER CODE BEGIN ICACHE_Init 0 */
    


  332. 

  333.   /* USER CODE END ICACHE_Init 0 */
    


  334. 

  335.   /* USER CODE BEGIN ICACHE_Init 1 */
    


  336. 

  337.   /* USER CODE END ICACHE_Init 1 */
    


  338. 

  339.   /** Enable instruction cache in 1-way (direct mapped cache)
    

  340.   */
    

  341.   if (HAL_ICACHE_ConfigAssociativityMode(ICACHE_1WAY) != HAL_OK)
    

  342.   {
    

  343.     Error_Handler();
    

  344.   }
    

  345.   if (HAL_ICACHE_Enable() != HAL_OK)
    

  346.   {
    

  347.     Error_Handler();
    

  348.   }
    

  349.   /* USER CODE BEGIN ICACHE_Init 2 */
    


  350. 

  351.   /* USER CODE END ICACHE_Init 2 */
    


  352. 

  353. }
    


  354. 

  355. /**
    

  356.   * @brief GPIO Initialization Function
    

  357.   * @param None
    

  358.   * @retval None
    

  359.   */
    

  360. static void MX_GPIO_Init(void)
    

  361. {
    


  362. 

  363.   /* GPIO Ports Clock Enable */
    

  364.   __HAL_RCC_GPIOA_CLK_ENABLE();
    


  365. 

  366. }
    


  367. 

  368. /* USER CODE BEGIN 4 */
    

  369. /**
    

  370.   * @brief  EXTI line detection callbacks
    

  371.   * @param  GPIO_Pin: Specifies the pins connected EXTI line
    

  372.   * @retval None
    

  373.   */
    

  374. void HAL_GPIO_EXTI_Rising_Callback(uint16_t GPIO_Pin)
    

  375. {
    

  376.   if (GPIO_Pin == BUTTON_USER_PIN)
    

  377.   {
    

  378.     UserButtonStatus = 1;
    

  379.   }
    

  380. }
    


  381. 

  382. /* USER CODE END 4 */
    


  383. 

  384. /**
    

  385.   * @brief  This function is executed in case of error occurrence.
    

  386.   * @retval None
    

  387.   */
    

  388. void Error_Handler(void)
    

  389. {
    

  390.   /* USER CODE BEGIN Error_Handler_Debug */
    

  391.   /* Turn LED3 on */
    

  392.   BSP_LED_On(LED3);
    

  393.   while(1)
    

  394.   {
    

  395.   }
    

  396.   /* USER CODE END Error_Handler_Debug */
    

  397. }
    


  398. 

  399. #ifdef  USE_FULL_ASSERT
    

  400. /**
    

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

  402.   *         where the assert_param error has occurred.
    

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

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

  405.   * @retval None
    

  406.   */
    

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

  408. {
    

  409.   /* USER CODE BEGIN 6 */
    

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

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

  412.   /* USER CODE END 6 */
    

  413. }
    

  414. #endif /* USE_FULL_ASSERT */
效果图：
0.jpg 1.jpg
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EmmaTT 发表于 2024-1-12 16:32 | 显示全部楼层
这个内部集成了几个dac啊
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