167 lines
6.3 KiB
C
167 lines
6.3 KiB
C
#include "adc.h"
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float Voltage,Voltage_Count,Voltage_All; //Variables related to battery voltage sampling //电池电压采样相关的变量
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const float Revise=0.99;
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/**************************************************************************
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Function: ADC initializes battery voltage detection
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Input : none
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Output : none
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函数功能：ADC初始化电池电压检测
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入口参数：无
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返回 值：无
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**************************************************************************/
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void Adc_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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ADC_CommonInitTypeDef ADC_CommonInitStructure;
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ADC_InitTypeDef ADC_InitStructure;
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);//使能GPIOA时钟
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); //使能ADC1时钟
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;//PB0 通道8
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//模拟输入
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;//不带上下拉
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GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,ENABLE); //ADC1复位
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,DISABLE); //复位结束
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ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;//独立模式
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ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;//两个采样阶段之间的延迟5个时钟
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ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled; //DMA失能
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ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div6;//预分频4分频。ADCCLK=PCLK2/4=84/4=21Mhz,ADC时钟最好不要超过36Mhz
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ADC_CommonInit(&ADC_CommonInitStructure);//初始化
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ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;//12位模式
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ADC_InitStructure.ADC_ScanConvMode = DISABLE;//非扫描模式
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ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;//关闭连续转换
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ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;//禁止触发检测，使用软件触发
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ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//右对齐
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ADC_InitStructure.ADC_NbrOfConversion = 1;//1个转换在规则序列中 也就是只转换规则序列1
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ADC_Init(ADC1, &ADC_InitStructure);//ADC初始化
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ADC_Cmd(ADC1, ENABLE);//开启AD转换器
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}
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void Adc_POWER_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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ADC_CommonInitTypeDef ADC_CommonInitStructure;
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ADC_InitTypeDef ADC_InitStructure;
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);//使能GPIOA时钟
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE); //使能ADC1时钟
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;//PB0 通道8
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//模拟输入
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;//不带上下拉
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GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC2,ENABLE); //ADC2复位
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC2,DISABLE); //复位结束
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ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;//独立模式
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ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;//两个采样阶段之间的延迟5个时钟
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ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled; //DMA失能
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ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div6;//预分频4分频。ADCCLK=PCLK2/4=84/4=21Mhz,ADC时钟最好不要超过36Mhz
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ADC_CommonInit(&ADC_CommonInitStructure);//初始化
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ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;//12位模式
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ADC_InitStructure.ADC_ScanConvMode = DISABLE;//非扫描模式
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ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;//关闭连续转换
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ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;//禁止触发检测，使用软件触发
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ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//右对齐
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ADC_InitStructure.ADC_NbrOfConversion = 1;//1个转换在规则序列中 也就是只转换规则序列1
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ADC_Init(ADC2, &ADC_InitStructure);//ADC初始化
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ADC_Cmd(ADC2, ENABLE);//开启AD转换器
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}
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/**************************************************************************
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Function: The AD sampling
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Input : The ADC channels
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Output : AD conversion results
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函数功能：AD采样
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入口参数：ADC的通道
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返回 值：AD转换结果
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**************************************************************************/
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u16 Get_Adc(u8 ch)
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{
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//Sets the specified ADC rule group channel, one sequence, and sampling time
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//设置指定ADC的规则组通道，一个序列，采样时间
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//ADC1,ADC通道,采样时间为480周期
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ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_480Cycles );
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//Enable the specified ADC1 software transformation startup function
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//使能指定的ADC1的软件转换启动功能
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ADC_SoftwareStartConv(ADC1);
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//Wait for the conversion to finish
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//等待转换结束
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while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC ));
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//Returns the result of the last ADC1 rule group conversion
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//返回最近一次ADC1规则组的转换结果
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return ADC_GetConversionValue(ADC1);
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}
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u16 Get_Adc2(u8 ch)
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{
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//Sets the specified ADC rule group channel, one sequence, and sampling time
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//设置指定ADC的规则组通道，一个序列，采样时间
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//ADC2,ADC通道,采样时间为480周期
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ADC_RegularChannelConfig(ADC2, ch, 1, ADC_SampleTime_480Cycles );
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//Enable the specified ADC2 software transformation startup function
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//使能指定的ADC1的软件转换启动功能
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ADC_SoftwareStartConv(ADC2);
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//Wait for the conversion to finish
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//等待转换结束
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while(!ADC_GetFlagStatus(ADC2, ADC_FLAG_EOC ));
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//Returns the result of the last ADC2 rule group conversion
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//返回最近一次ADC1规则组的转换结果
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return ADC_GetConversionValue(ADC2);
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}
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/**************************************************************************
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Function: Collect multiple ADC values to calculate the average function
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Input : ADC channels and collection times
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Output : AD conversion results
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函数功能：采集多次ADC值求平均值函数
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入口参数：ADC通道和采集次数
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返 回 值：AD转换结果
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**************************************************************************/
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u16 Get_adc_Average(u8 chn, u8 times)
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{
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u32 temp_val=0;
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u8 t;
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for(t=0;t<times;t++)
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{
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temp_val+=Get_Adc(chn);
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delay_ms(5);
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}
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return temp_val/times;
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}
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/**************************************************************************
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Function: Read the battery voltage
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Input : none
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Output : Battery voltage in mV
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函数功能：读取电池电压
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入口参数：无
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返回 值：电池电压，单位mv
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**************************************************************************/
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float Get_battery_volt(void)
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{
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float Volt;
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//The resistance partial voltage can be obtained by simple analysis according to the schematic diagram
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//电阻分压，具体根据原理图简单分析可以得到
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Volt=Get_Adc2(Battery_Ch)*3.3*11.0*Revise/1.0/4096;
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return Volt;
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}
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