使用keil库函数stm32 4个ADC和DMA输入通道的具体配置代码
时间: 2024-02-09 19:10:19 浏览: 182
好的,下面是具体配置代码:
1. 首先,在工程目录下找到stm32f10x_conf.h文件,在文件中添加以下代码:
```c
/* ADC1通道定义,共4个通道 */
#define ADC1_DR_Address ((uint32_t)0x4001244C)
#define ADC1_Channel_0 ((uint8_t)0x00)
#define ADC1_Channel_1 ((uint8_t)0x01)
#define ADC1_Channel_2 ((uint8_t)0x02)
#define ADC1_Channel_3 ((uint8_t)0x03)
/* DMA通道定义,共4个通道 */
#define DMA1_Channel1_IRQn ((uint8_t)0x11)
#define DMA1_Channel2_IRQn ((uint8_t)0x12)
#define DMA1_Channel3_IRQn ((uint8_t)0x13)
#define DMA1_Channel4_IRQn ((uint8_t)0x14)
```
2. 然后,在工程目录下找到main.c文件,在文件中添加以下代码:
```c
#include "stm32f10x.h"
#include "stm32f10x_adc.h"
#include "stm32f10x_dma.h"
/* 定义全局变量 */
__IO uint16_t ADC_ConvertedValue[4];
void ADC_Configuration(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* 打开ADC和GPIO的时钟 */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA, ENABLE);
/* 配置ADC通道对应的GPIO */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* 配置ADC参数 */
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 4;
ADC_Init(ADC1, &ADC_InitStructure);
/* 配置ADC通道 */
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_28Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_28Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_28Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_28Cycles5);
/* 打开ADC DMA模式 */
ADC_DMACmd(ADC1, ENABLE);
}
void DMA_Configuration(void)
{
DMA_InitTypeDef DMA_InitStructure;
/* 打开DMA时钟 */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
/* 配置DMA参数 */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_ConvertedValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 4;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
/* 打开DMA通道 */
DMA_Cmd(DMA1_Channel1, ENABLE);
}
int main(void)
{
/* 配置ADC和DMA */
ADC_Configuration();
DMA_Configuration();
/* 循环读取ADC值 */
while (1)
{
/* 等待DMA传输完成 */
while (DMA_GetFlagStatus(DMA1_FLAG_TC1) == RESET);
/* 清除DMA传输完成标志 */
DMA_ClearFlag(DMA1_FLAG_TC1);
/* 处理ADC值 */
for (int i = 0; i < 4; i++)
{
/* 处理ADC值 */
printf("ADC%d value: %d\n", i, ADC_ConvertedValue[i]);
}
}
}
```
以上就是使用keil库函数stm32 4个ADC和DMA输入通道的具体配置代码,希望能对你有所帮助。需要注意的是,以上代码中仅为示例代码,具体配置还需根据自己的需求进行调整。
阅读全文