stm32G030C8T6 ADC读取到的一直是4095

首先硬件线路看看有问题，连接、供电，尤其VDDA之类的脚。然后你先拿ST的Cube库里的例程跑跑，也顺便 熟悉下相关函数。再自己从一个通道开始操作。不难的，加油！

void MX_ADC1_Init(void) { ADC_ChannelConfTypeDef sConfig = {0}; hadc1.Instance = ADC1; hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4; hadc1.Init.Resolution = ADC_RESOLUTION_12B; hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc1.Init.ScanConvMode = ADC_SCAN_SEQ_FIXED; hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV; hadc1.Init.LowPowerAutoWait = DISABLE; hadc1.Init.LowPowerAutoPowerOff = DISABLE; hadc1.Init.ContinuousConvMode = DISABLE; hadc1.Init.NbrOfConversion = 1; hadc1.Init.DiscontinuousConvMode = DISABLE; hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc1.Init.DMAContinuousRequests = DISABLE; hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED; hadc1.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_12CYCLES_5; hadc1.Init.OversamplingMode = DISABLE; hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH; if (HAL_ADC_Init(&hadc1) != HAL_OK) { Error_Handler(); } sConfig.Channel = ADC_CHANNEL_11; sConfig.Rank = ADC_RANK_CHANNEL_NUMBER; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { Error_Handler(); } }

void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; RCC_PeriphCLKInitTypeDef PeriphClkInit = {0}; if(adcHandle->Instance==ADC1) { PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC; PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_SYSCLK; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) { Error_Handler(); } __HAL_RCC_ADC_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); GPIO_InitStruct.Pin = GPIO_PIN_10; GPIO_InitStruct.Mode = GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); } } void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle) { if(adcHandle->Instance==ADC1) { __HAL_RCC_ADC_CLK_DISABLE(); HAL_GPIO_DeInit(GPIOB, GPIO_PIN_10); } }

int main(void) { /* 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_ADC1_Init(); MX_USART1_UART_Init(); MX_USART2_UART_Init(); /* USER CODE BEGIN 2 */ HAL_ADC_Start(&hadc1); while (1) { printf("VREFINT_DATA:%d \r\n",HAL_ADC_GetValue(&hadc1)); HAL_Delay(500); } }

mark，直接参考官方demo

好的 我试试

好的，谢谢