文章目录[隐藏]
概述
ADC_Init（）函数
函数声明：void ADC_Init(ADC_TypeDef* ADCx, ADC_InitTypeDef* ADC_InitStruct);
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ADCx参数有效性
assert_param(IS_ADC_ALL_PERIPH(ADCx));#define IS_ADC_ALL_PERIPH(PERIPH) (((PERIPH) == ADC1) || \ ((PERIPH) == ADC2) || \ ((PERIPH) == ADC3)) -
结构体参数有效性
typedef struct { uint32_t ADC_Mode; FunctionalState ADC_ScanConvMode; FunctionalState ADC_ContinuousConvMode; uint32_t ADC_ExternalTrigConv; uint32_t ADC_DataAlign; uint8_t ADC_NbrOfChannel; }ADC_InitTypeDef;assert_param(IS_ADC_MODE(ADC_InitStruct->ADC_Mode)); assert_param(IS_FUNCTIONAL_STATE(ADC_InitStruct->ADC_ScanConvMode)); assert_param(IS_FUNCTIONAL_STATE(ADC_InitStruct->ADC_ContinuousConvMode)); assert_param(IS_ADC_EXT_TRIG(ADC_InitStruct->ADC_ExternalTrigConv)); assert_param(IS_ADC_DATA_ALIGN(ADC_InitStruct->ADC_DataAlign)); assert_param(IS_ADC_REGULAR_LENGTH(ADC_InitStruct->ADC_NbrOfChannel));#define IS_ADC_MODE(MODE) (((MODE) == ADC_Mode_Independent) || \ ((MODE) == ADC_Mode_RegInjecSimult) || \ ((MODE) == ADC_Mode_RegSimult_AlterTrig) || \ ((MODE) == ADC_Mode_InjecSimult_FastInterl) || \ ((MODE) == ADC_Mode_InjecSimult_SlowInterl) || \ ((MODE) == ADC_Mode_InjecSimult) || \ ((MODE) == ADC_Mode_RegSimult) || \ ((MODE) == ADC_Mode_FastInterl) || \ ((MODE) == ADC_Mode_SlowInterl) || \ ((MODE) == ADC_Mode_AlterTrig))#define IS_FUNCTIONAL_STATE(STATE) (((STATE) == DISABLE) || ((STATE) == ENABLE))#define IS_ADC_EXT_TRIG(REGTRIG) (((REGTRIG) == ADC_ExternalTrigConv_T1_CC1) || \ ((REGTRIG) == ADC_ExternalTrigConv_T1_CC2) || \ ((REGTRIG) == ADC_ExternalTrigConv_T1_CC3) || \ ((REGTRIG) == ADC_ExternalTrigConv_T2_CC2) || \ ((REGTRIG) == ADC_ExternalTrigConv_T3_TRGO) || \ ((REGTRIG) == ADC_ExternalTrigConv_T4_CC4) || \ ((REGTRIG) == ADC_ExternalTrigConv_Ext_IT11_TIM8_TRGO) || \ ((REGTRIG) == ADC_ExternalTrigConv_None) || \ ((REGTRIG) == ADC_ExternalTrigConv_T3_CC1) || \ ((REGTRIG) == ADC_ExternalTrigConv_T2_CC3) || \ ((REGTRIG) == ADC_ExternalTrigConv_T8_CC1) || \ ((REGTRIG) == ADC_ExternalTrigConv_T8_TRGO) || \ ((REGTRIG) == ADC_ExternalTrigConv_T5_CC1) || \ ((REGTRIG) == ADC_ExternalTrigConv_T5_CC3))#define IS_ADC_DATA_ALIGN(ALIGN) (((ALIGN) == ADC_DataAlign_Right) || \ ((ALIGN) == ADC_DataAlign_Left))#define IS_ADC_REGULAR_LENGTH(LENGTH) (((LENGTH) >= 0x1) && ((LENGTH) <= 0x10))
ADC_Cmd（）函数
void ADC_Cmd(ADC_TypeDef* ADCx, FunctionalState NewState);
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_FUNCTIONAL_STATE(NewState));
- ADCx参数有效性：同上
- NewState参数有效性：同上
ADC_SoftwareStartConvCmd()函数
void ADC_SoftwareStartConvCmd(ADC_TypeDef* ADCx, FunctionalState NewState);
参数有效性：同上
void ADC_RegularChannelConfig()函数
void ADC_RegularChannelConfig(ADC_TypeDef* ADCx, uint8_t ADC_Channel, uint8_t Rank, uint8_t ADC_SampleTime)
assert_param(IS_ADC_ALL_PERIPH(ADCx));
assert_param(IS_ADC_CHANNEL(ADC_Channel));
assert_param(IS_ADC_REGULAR_RANK(Rank));
assert_param(IS_ADC_SAMPLE_TIME(ADC_SampleTime));
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ADCx参数有效性：同上
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ADC_Channel 参数有效性
#define IS_ADC_CHANNEL(CHANNEL) (((CHANNEL) == ADC_Channel_0) || ((CHANNEL) == ADC_Channel_1) || \ ((CHANNEL) == ADC_Channel_2) || ((CHANNEL) == ADC_Channel_3) || \ ((CHANNEL) == ADC_Channel_4) || ((CHANNEL) == ADC_Channel_5) || \ ((CHANNEL) == ADC_Channel_6) || ((CHANNEL) == ADC_Channel_7) || \ ((CHANNEL) == ADC_Channel_8) || ((CHANNEL) == ADC_Channel_9) || \ ((CHANNEL) == ADC_Channel_10) || ((CHANNEL) == ADC_Channel_11) || \ ((CHANNEL) == ADC_Channel_12) || ((CHANNEL) == ADC_Channel_13) || \ ((CHANNEL) == ADC_Channel_14) || ((CHANNEL) == ADC_Channel_15) || \ ((CHANNEL) == ADC_Channel_16) || ((CHANNEL) == ADC_Channel_17)) -
Rank参数有效性
#define IS_ADC_REGULAR_RANK(RANK) (((RANK) >= 0x1) && ((RANK) <= 0x10)) -
ADC_SampleTime参数有效性
#define IS_ADC_SAMPLE_TIME(TIME) (((TIME) == ADC_SampleTime_1Cycles5) || \ ((TIME) == ADC_SampleTime_7Cycles5) || \ ((TIME) == ADC_SampleTime_13Cycles5) || \ ((TIME) == ADC_SampleTime_28Cycles5) || \ ((TIME) == ADC_SampleTime_41Cycles5) || \ ((TIME) == ADC_SampleTime_55Cycles5) || \ ((TIME) == ADC_SampleTime_71Cycles5) || \ ((TIME) == ADC_SampleTime_239Cycles5))
ADC_GetConversionValue（）函数
` uint16_t ADC_GetConversionValue(ADC_TypeDef* ADCx)`
参数有效性同上
配置过程
- 添加stm32f10x_adc.c文件
- 在硬件文件夹下面新建一个ADC文件夹，添加adc.h和adc.c文件
- 在侧边栏添加ADC文件夹，并且在配置中包含adc头文件
- 在头文件使用
ifdef写唯一标识符
写adc源文件
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源文件包含函数：
void Adc_Init(void);//初始化函数 u16 Get_Adc(u8 ch); //读取adc的值 u16 Get_Adc_Average(u8 ch,u8 times); //多次读取adc取平均值 -
初始化函数
void Adc_Init(void) { ADC_InitTypeDef ADC_InitStructure; //定义结构体 GPIO_InitTypeDef GPIO_InitStructure;//定义结构体 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_ADC1 , ENABLE ); //使能ADC1通道时钟 RCC_ADCCLKConfig(RCC_PCLK2_Div6); //设置ADC分频因子6 72M/6=12,ADC最大时间不能超过14M //PA1 作为模拟通道输入引脚 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; //模拟输入引脚 GPIO_Init(GPIOA, &GPIO_InitStructure); ADC_DeInit(ADC1); //ADC1复位 ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; //ADC工作模式:ADC1和ADC2工作在独立模式 ADC_InitStructure.ADC_ScanConvMode = DISABLE; //模数转换工作在单通道模式 ADC_InitStructure.ADC_ContinuousConvMode = DISABLE; //模数转换工作在单次转换模式 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //转换由软件而不是外部触发启动 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //ADC数据右对齐 ADC_InitStructure.ADC_NbrOfChannel = 1; //顺序进行规则转换的ADC通道的数目 ADC_Init(ADC1, &ADC_InitStructure); //结构体赋值 ADC_Cmd(ADC1, ENABLE); //使能ADC ADC_ResetCalibration(ADC1); //使能复位校准 while(ADC_GetResetCalibrationStatus(ADC1)); //等待使能结束 ADC_StartCalibration(ADC1); //开启校准 while(ADC_GetCalibrationStatus(ADC1));//等待校准结束 } -
获取ADC函数
u16 Get_Adc(u8 ch) { ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_239Cycles5 ); //设置采样时间 ADC_SoftwareStartConvCmd(ADC1, ENABLE); //使能软件转化功能 while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC ));//等待转换结束 return ADC_GetConversionValue(ADC1);//返回结果 } -
求平均值函数
u16 Get_Adc_Average(u8 ch,u8 times) { u32 temp_val=0; u8 t; for(t=0;t<times;t++) { temp_val+=Get_Adc(ch); delay_ms(5); } return temp_val/times; }
主函数
int main(void){
u16 adcx;
float temp;
delay_init(); //延时函数初始化
uart_init(9600); //串口初始化为9600
LED_Init(); //初始化与LED连接的硬件接口
LCD_Init();
Adc_Init(); //ADC初始化
POINT_COLOR=RED;//设置字体为红色
LCD_ShowString(60,50,200,16,16,"Mini STM32");
LCD_ShowString(60,70,200,16,16,"ADC TEST");
LCD_ShowString(60,90,200,16,16,"ATOM@ALIENTEK");
LCD_ShowString(60,110,200,16,16,"2014/3/9");
//显示提示信息
POINT_COLOR=BLUE;//设置字体为蓝色
LCD_ShowString(60,130,200,16,16,"ADC_CH1_VAL:");
LCD_ShowString(60,150,200,16,16,"ADC_CH1_VOL:0.000V");
while(1)
{
adcx=Get_Adc_Average(ADC_Channel_1,10);
LCD_ShowxNum(156,130,adcx,4,16,0);//显示ADC的值
temp=(float)adcx*(3.3/4096);
adcx=temp;
LCD_ShowxNum(156,150,adcx,1,16,0);//显示电压值
temp-=adcx;
temp*=1000;
LCD_ShowxNum(172,150,temp,3,16,0X80);
LED0=!LED0;
delay_ms(250);
}
}
版权声明：本文为CSDN博主「Kafen Wong」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/KafenWong/article/details/122635995
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