STM32自带CPU的温度数据，需要使用ADC去读取。因此在MX创建项目时如图配置：
模块初始化代码如下：
void MX_ADC1_Init(void)
{/* USER CODE BEGIN ADC1_Init 0 *//* USER CODE END ADC1_Init 0 */ADC_ChannelConfTypeDef sConfig = {0};/* USER CODE BEGIN ADC1_Init 1 *//* USER CODE END ADC1_Init 1 *//** Common config*/hadc1.Instance = ADC1;hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;hadc1.Init.ContinuousConvMode = ENABLE;hadc1.Init.DiscontinuousConvMode = DISABLE;hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;hadc1.Init.NbrOfConversion = 1;if (HAL_ADC_Init(&hadc1) != HAL_OK){Error_Handler();}/** Configure Regular Channel*/sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;sConfig.Rank = ADC_REGULAR_RANK_1;sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK){Error_Handler();}/* USER CODE BEGIN ADC1_Init 2 *//* USER CODE END ADC1_Init 2 */}void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{if(adcHandle->Instance==ADC1){/* USER CODE BEGIN ADC1_MspInit 0 *//* USER CODE END ADC1_MspInit 0 *//* ADC1 clock enable */__HAL_RCC_ADC1_CLK_ENABLE();/* ADC1 DMA Init *//* ADC1 Init */hdma_adc1.Instance = DMA1_Channel1;hdma_adc1.Init.Direction = DMA_PERIPH_TO_MEMORY;hdma_adc1.Init.PeriphInc = DMA_PINC_DISABLE;hdma_adc1.Init.MemInc = DMA_MINC_ENABLE;hdma_adc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;hdma_adc1.Init.Mode = DMA_CIRCULAR;hdma_adc1.Init.Priority = DMA_PRIORITY_LOW;if (HAL_DMA_Init(&hdma_adc1) != HAL_OK){Error_Handler();}__HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc1);/* USER CODE BEGIN ADC1_MspInit 1 *//* USER CODE END ADC1_MspInit 1 */}
}/void MX_DMA_Init(void)
{/* DMA controller clock enable */__HAL_RCC_DMA1_CLK_ENABLE();/* DMA interrupt init *//* DMA1_Channel1_IRQn interrupt configuration */HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);}给出Main的调用
//全局变量
uint32_t CPU_Temp_AD =0;double CalcCPUTemp(ADC_HandleTypeDef* hadc)
{double temp = 0;//需要静态指针保存数据HAL_ADC_Start_DMA(hadc, (uint32_t *)&CPU_Temp_AD, 1);HAL_Delay(5);//采样10次for(uint8_t a = 0; a < 10; a++){temp += CPU_Temp_AD;HAL_Delay(2);}return (1.43 - (temp/1000/10)) + 25;
}int main(void)
{MX_DMA_Init();MX_ADC1_Init();while (1) {//计算获取温度double CPU_TEMP = CalcCPUTemp(&hadc1);HAL_Delay(10);}
}
