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STM32G031-使用STM32CubeIDE实现DMA处理ADC

一、USART配置

二、ADC配置

三、用户代码

/* USER CODE BEGIN Includes */#include "stdio.h"/* USER CODE END Includes *//* USER CODE BEGIN PD */#ifdef __GNUC__#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)#else#define PUTCHAR_PROTOTYPE int fputc(int ch,FILE F)#endifPUTCHAR_PROTOTYPE{   	LL_USART_TransmitData8(USART2, (uint8_t)ch);	while(!LL_USART_IsActiveFlag_TXE(USART2)){   }	return ch;}/* USER CODE END PD *//* USER CODE BEGIN PV */uint16_t ADC_ConvertedValue[150];uint8_t i;uint32_t ad0,ad1,ad4;/* USER CODE END PV *//* USER CODE BEGIN 0 */void ADC_DMA_Config_Start(void){   	LL_mDelay(2); //延时2ms，避免DMA读取数据通道不对	// LL_DMA_SetChannelPriorityLevel(DMA1, LL_DMA_CHANNEL_1, LL_DMA_PRIORITY_HIGH);	LL_DMA_SetDataLength(DMA1, LL_DMA_CHANNEL_1, 150);	LL_DMA_SetMemoryAddress(DMA1, LL_DMA_CHANNEL_1,(uint32_t)ADC_ConvertedValue);	LL_DMA_SetPeriphAddress(DMA1, LL_DMA_CHANNEL_1,LL_ADC_DMA_GetRegAddr(ADC1,LL_ADC_DMA_REG_REGULAR_DATA));	LL_DMA_EnableChannel(DMA1, LL_DMA_CHANNEL_1);	LL_ADC_StartCalibration(ADC1);	while(LL_ADC_IsCalibrationOnGoing(ADC1));	LL_ADC_Enable(ADC1);	LL_ADC_REG_StartConversion(ADC1);	LL_ADC_REG_SetDMATransfer(ADC1, LL_ADC_REG_DMA_TRANSFER_UNLIMITED);}/* USER CODE END 0 *//* USER CODE BEGIN 2 */  printf("STM32CubeMX Test...\r\n");  ADC_DMA_Config_Start();  /* USER CODE END 2 *//* USER CODE BEGIN 3 */    for(i = 0,ad0 = 0,ad1 = 0,ad4 = 0; i < 150;){   		ad0 += ADC_ConvertedValue[i++];		ad1 += ADC_ConvertedValue[i++];		ad4 += ADC_ConvertedValue[i++];	}	ad0 /= 50;	// 实现均匀滤波	ad1 /= 50;	// 实现均匀滤波	ad4 /= 50;	// 实现均匀滤波//	printf("ADC->CH1 Value:%lf\r\n",(float)ad0*3.3/4095);//	printf("ADC->CH2 Value:%lf\r\n",(float)ad1*3.3/4095);//	printf("ADC->CH4 Value:%lf\r\n",(float)ad4*3.3/4095);	printf("ADC Value:%lf,%lf,%lf\r\n",(float)ad0*3.3/4095,(float)ad1*3.3/4095,(float)ad4*3.3/4095);  }  /* USER CODE END 3 */

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