多通道ADC加DMA程序
时间: 2024-02-09 22:23:41 浏览: 20
以下是一个示例的多通道ADC加DMA的程序,使用STM32的HAL库进行配置和操作。请注意,这仅是一个基本的框架,你可能需要根据你的具体需求进行适当的修改和扩展。
```c
#include "stm32f4xx_hal.h"
#define ADC_CHANNELS 2
#define ADC_BUFFER_SIZE 100
ADC_HandleTypeDef hadc;
DMA_HandleTypeDef hdma_adc;
uint16_t adc_buffer[ADC_CHANNELS][ADC_BUFFER_SIZE];
void MX_ADC_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
hadc.Instance = ADC1;
hadc.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
hadc.Init.Resolution = ADC_RESOLUTION_12B;
hadc.Init.ScanConvMode = ENABLE;
hadc.Init.ContinuousConvMode = DISABLE;
hadc.Init.DiscontinuousConvMode = ENABLE;
hadc.Init.NbrOfDiscConversion = ADC_CHANNELS;
hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc.Init.NbrOfConversion = ADC_CHANNELS;
hadc.Init.DMAContinuousRequests = ENABLE;
hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
if (HAL_ADC_Init(&hadc) != HAL_OK)
{
Error_Handler();
}
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
for (uint8_t i = 0; i