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71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
#include "bsp_adc.h"
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void BSP_ADCInit(void)
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{
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ADC_InitTypeDef ADC_InitStructure;
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GPIO_InitTypeDef GPIO_InitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA, ENABLE);
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RCC_ADCCLKConfig(RCC_PCLK2_Div6);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
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GPIO_Init(GPIOA,&GPIO_InitStructure);
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ADC_DeInit(ADC1);
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/* ADC1 configuration ------------------------------------------------------*/
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ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
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ADC_InitStructure.ADC_ScanConvMode = DISABLE;
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ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
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ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
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ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
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ADC_InitStructure.ADC_NbrOfChannel = 1;
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ADC_Init(ADC1, &ADC_InitStructure);
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ADC_Cmd(ADC1, ENABLE);
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ADC_ResetCalibration(ADC1);
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while(ADC_GetResetCalibrationStatus(ADC1));
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ADC_StartCalibration(ADC1);
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while(ADC_GetCalibrationStatus(ADC1));
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ADC_SoftwareStartConvCmd(ADC1,ENABLE);
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}
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float ADC_GetSimpleData(void)
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{
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float SimpleVoltage = 0;
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uint8_t x = 0;
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uint32_t total = 0;
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for( x = 0;x < 5; x++)
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{
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// 开启转换,等待DMA传输结束
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ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_239Cycles5 );
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ADC_SoftwareStartConvCmd(ADC1, ENABLE);
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while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC )){}//等待转换结束
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total += ADC_GetConversionValue(ADC1);
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Delay_ms(2);
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}
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total = (uint32_t)(total/5);
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SimpleVoltage = (float)total*3.3/4096.0*2.0;
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return SimpleVoltage;
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}
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