STM32 —— 多路ADC采集

#ifndef _ADC_H_#define _ADC_H_#include "type.h"#include "debug.h"void ADCInit(void);uint16_t ADCGetData(uint8_t channel);uint16_t ADCGetAverage(uint8_t channel, uint8_t times);#ifndef CONFIG_CANvoid adc_test(void);#endif#endif /* _ADC_H_ */

// input1~5 -- 模拟量IO口; input6~10 -- 普通IO口用#define ADC_CHANNEL        ADC1#define AD_INPUT1_GRP      GPIOC#define AD_INPUT1_INDEX    GPIO_Pin_0#define AD_INPUT2_GRP      GPIOC#define AD_INPUT2_INDEX    GPIO_Pin_1#define AD_INPUT3_GRP      GPIOC#define AD_INPUT3_INDEX    GPIO_Pin_2#define AD_INPUT4_GRP      GPIOC#define AD_INPUT4_INDEX    GPIO_Pin_3#define AD_INPUT5_GRP      GPIOA#define AD_INPUT5_INDEX    GPIO_Pin_2#if 0#define AD_INPUT6_GRP      GPIOA#define AD_INPUT6_INDEX    GPIO_Pin_3#define AD_INPUT7_GRP      GPIOC#define AD_INPUT7_INDEX    GPIO_Pin_4#define AD_INPUT8_GRP      GPIOC#define AD_INPUT8_INDEX    GPIO_Pin_5#define AD_INPUT9_GRP      GPIOB#define AD_INPUT9_INDEX    GPIO_Pin_0#define AD_INPUT10_GRP     GPIOB#define AD_INPUT10_INDEX   GPIO_Pin_1#endif#define AD_INPUT_CONFIG(gpio, pos)  GPIOConfig(gpio, pos, GPIO_Mode_AIN)

#include "adc.h"#include "stm32f10x.h"#include "delay.h"#include "target.h"#define ADC_CHANNEL_NUM  5static uint16_t ad_value[ADC_CHANNEL_NUM] = {0};static void adc_gpio_clk_init(void){  RCC_ADCCLKConfig(RCC_PCLK2_Div6);}static void adc_gpio_init(void){  adc_gpio_clk_init();  AD_INPUT_CONFIG(AD_INPUT1_GRP, AD_INPUT1_INDEX | AD_INPUT2_INDEX | AD_INPUT3_INDEX | AD_INPUT4_INDEX);  AD_INPUT_CONFIG(AD_INPUT5_GRP, AD_INPUT5_INDEX);  ADC_DeInit(ADC_CHANNEL);}static void adc_dma_init(void){  DMA_InitTypeDef DMA_InitStructure;  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);  DMA_DeInit(DMA1_Channel1);  DMA_InitStructure.DMA_PeripheralBaseAddr  = (u32) & (ADC1->DR);  DMA_InitStructure.DMA_MemoryBaseAddr      = (u32)&ad_value;  DMA_InitStructure.DMA_DIR                 = DMA_DIR_PeripheralSRC;  DMA_InitStructure.DMA_M2M                 = DMA_M2M_Disable;  DMA_InitStructure.DMA_PeripheralDataSize  = DMA_PeripheralDataSize_HalfWord;  DMA_InitStructure.DMA_MemoryDataSize      = DMA_MemoryDataSize_HalfWord;  DMA_InitStructure.DMA_BufferSize          = ADC_CHANNEL_NUM;  DMA_InitStructure.DMA_MemoryInc           = DMA_MemoryInc_Enable;  DMA_InitStructure.DMA_PeripheralInc       = DMA_PeripheralInc_Disable;  DMA_InitStructure.DMA_Mode                = DMA_Mode_Circular;  DMA_InitStructure.DMA_Priority            = DMA_Priority_High;  DMA_Init(DMA1_Channel1, &DMA_InitStructure);}static void adc_init(){  ADC_InitTypeDef ADC_InitStructure;  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 = ADC_CHANNEL_NUM;  ADC_Init(ADC_CHANNEL, &ADC_InitStructure);  ADC_RegularChannelConfig(ADC_CHANNEL, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5);  ADC_RegularChannelConfig(ADC_CHANNEL, ADC_Channel_1, 2, ADC_SampleTime_55Cycles5);  ADC_RegularChannelConfig(ADC_CHANNEL, ADC_Channel_2, 3, ADC_SampleTime_55Cycles5);  ADC_RegularChannelConfig(ADC_CHANNEL, ADC_Channel_3, 4, ADC_SampleTime_55Cycles5);  ADC_RegularChannelConfig(ADC_CHANNEL, ADC_Channel_4, 5, ADC_SampleTime_55Cycles5);  ADC_DMACmd(ADC_CHANNEL, ENABLE);  ADC_Cmd(ADC_CHANNEL, ENABLE);  ADC_ResetCalibration(ADC_CHANNEL);  while(ADC_GetResetCalibrationStatus(ADC_CHANNEL));  ADC_StartCalibration(ADC_CHANNEL);  while(ADC_GetCalibrationStatus(ADC_CHANNEL));}static void adc_start(void){  ADC_SoftwareStartConvCmd(ADC_CHANNEL, ENABLE); // start convert  DMA_Cmd(DMA1_Channel1, ENABLE);}void  ADCInit(void){  adc_gpio_init();  adc_dma_init();  adc_init();  adc_start();}uint16_t ADCGetData(uint8_t channel){  uint16_t ret = 0;  switch(channel)  {  case ADC_Channel_0:    ret = ad_value[0];    break;  case ADC_Channel_1:    ret = ad_value[1];    break;  case ADC_Channel_2:    ret = ad_value[2];    break;  case ADC_Channel_3:    ret = ad_value[3];    break;  case ADC_Channel_4:    ret = ad_value[4];    break;  }  return ret;}uint16_t ADCGetAverage(uint8_t channel, uint8_t times){  uint16_t value;  int i;  for(i = 0; i < times; ++i)  {    value += ADCGetData(channel);  }  return (value / times);}#ifndef CONFIG_ADCvoid adc_test(void){  uint16_t buffer[ADC_CHANNEL_NUM];  float temp[ADC_CHANNEL_NUM];  buffer[0] = ADCGetData(ADC_Channel_0);  temp[0] = (float)buffer[0] * 3.3 / 4096;  printf("temp[0]: %f\r\n", temp[0]);  buffer[1] = ADCGetData(ADC_Channel_1);  temp[1] = (float)buffer[1] * 3.3 / 4096;  printf("temp[1]: %f\r\n", temp[1]);  buffer[2] = ADCGetData(ADC_Channel_2);  temp[2] = (float)buffer[2] * 3.3 / 4096;  printf("temp[2]: %f\r\n", temp[2]);  buffer[3] = ADCGetData(ADC_Channel_1);  temp[3] = (float)buffer[3] * 3.3 / 4096;  printf("temp[1]: %f\r\n", temp[3]);  buffer[4] = ADCGetData(ADC_Channel_4);  temp[4] = (float)buffer[4] * 3.3 / 4096;  printf("temp[2]: %f\r\n", temp[4]);}#endif