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- 2021-8-24
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//下面是代码,麻烦各位大神看一下
#define __HAL_RCC_DAC_CLK_ENABLE() do { \
__IO uint32_t tmpreg; \
SET_BIT(RCC->APB1ENR, RCC_APB1ENR_DACEN);\
/* Delay after an RCC peripheral clock enabling */ \
tmpreg = READ_BIT(RCC->APB1ENR, RCC_APB1ENR_DACEN);\
UNUSED(tmpreg); \
} while(0U)
void HAL_DAC_MspInit(DAC_HandleTypeDef* dacHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(dacHandle->Instance==DAC)
{
/* USER CODE BEGIN DAC_MspInit 0 */
/* USER CODE END DAC_MspInit 0 */
/* DAC clock enable */
__HAL_RCC_DAC_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**DAC GPIO Configuration
PA4 ------> DAC_OUT1
PA5 ------> DAC_OUT2
*/
GPIO_InitStruct.Pin = DAC_PWR_Pin|DAC_VGA_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN DAC_MspInit 1 */
/* USER CODE END DAC_MspInit 1 */
}
}
HAL_StatusTypeDef HAL_DAC_Init(DAC_HandleTypeDef *hdac)
{
/* Check DAC handle */
if (hdac == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));
if (hdac->State == HAL_DAC_STATE_RESET)
{
#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
/* Init the DAC Callback settings */
hdac->ConvCpltCallbackCh1 = HAL_DAC_ConvCpltCallbackCh1;
hdac->ConvHalfCpltCallbackCh1 = HAL_DAC_ConvHalfCpltCallbackCh1;
hdac->ErrorCallbackCh1 = HAL_DAC_ErrorCallbackCh1;
hdac->DMAUnderrunCallbackCh1 = HAL_DAC_DMAUnderrunCallbackCh1;
hdac->ConvCpltCallbackCh2 = HAL_DACEx_ConvCpltCallbackCh2;
hdac->ConvHalfCpltCallbackCh2 = HAL_DACEx_ConvHalfCpltCallbackCh2;
hdac->ErrorCallbackCh2 = HAL_DACEx_ErrorCallbackCh2;
hdac->DMAUnderrunCallbackCh2 = HAL_DACEx_DMAUnderrunCallbackCh2;
if (hdac->MspInitCallback == NULL)
{
hdac->MspInitCallback = HAL_DAC_MspInit;
}
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
/* Allocate lock resource and initialize it */
hdac->Lock = HAL_UNLOCKED;
#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
/* Init the low level hardware */
hdac->MspInitCallback(hdac);
#else
/* Init the low level hardware */
HAL_DAC_MspInit(hdac);
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
}
/* Initialize the DAC state*/
hdac->State = HAL_DAC_STATE_BUSY;
/* Set DAC error code to none */
hdac->ErrorCode = HAL_DAC_ERROR_NONE;
/* Initialize the DAC state*/
hdac->State = HAL_DAC_STATE_READY;
/* Return function status */
return HAL_OK;
}
void MX_DAC_Init(void)
{
/* USER CODE BEGIN DAC_Init 0 */
/* USER CODE END DAC_Init 0 */
DAC_ChannelConfTypeDef sConfig = {0};
/* USER CODE BEGIN DAC_Init 1 */
/* USER CODE END DAC_Init 1 */
/** DAC Initialization
*/
hdac.Instance = DAC;
if (HAL_DAC_Init(&hdac) != HAL_OK)
{
Error_Handler();
}
/** DAC channel OUT1 config
*/
sConfig.DAC_Trigger = DAC_TRIGGER_SOFTWARE;
sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
if (HAL_DAC_ConfigChannel(&hdac, &sConfig, DAC_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
/** DAC channel OUT2 config
*/
if (HAL_DAC_ConfigChannel(&hdac, &sConfig, DAC_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN DAC_Init 2 */
/* USER CODE END DAC_Init 2 */
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV2;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
}
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_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_DAC_Init();
/* USER CODE BEGIN 2 */
HAL_DAC_SetValue(&hdac, DAC_CHANNEL_1, DAC_ALIGN_12B_R, 4000);
HAL_DAC_Start(&hdac, DAC_CHANNEL_1);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
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