青岛网站优化排名,华秋电子商城,互联网保险业务,wordpress开启mu如果被ADC转换的模拟电压低于低阀值或高于高阀值#xff0c;AWD模拟看门狗状态位被设置。阀值位 于ADC_HTR和ADC_LTR寄存器的最低12个有效位中。通过设置ADC_CR1寄存器的AWDIE位 以允许产生相应中断。通过以下函数可以进行配置
void ADC_AnalogWatchdogCmd(ADC_TypeDef* ADCx…
如果被ADC转换的模拟电压低于低阀值或高于高阀值AWD模拟看门狗状态位被设置。阀值位 于ADC_HTR和ADC_LTR寄存器的最低12个有效位中。通过设置ADC_CR1寄存器的AWDIE位 以允许产生相应中断。通过以下函数可以进行配置
void ADC_AnalogWatchdogCmd(ADC_TypeDef* ADCx, uint32_t ADC_AnalogWatchdog);void ADC_AnalogWatchdogThresholdsConfig(ADC_TypeDef* ADCx, uint16_t HighThreshold, uint16_t LowThreshold);void ADC_AnalogWatchdogSingleChannelConfig(ADC_TypeDef* ADCx, uint8_t ADC_Channel);
根据框图修改ADC一节的代码。添加看门狗功能代码和NVIC中断代码 #include stm32f10x.h // Device headervoid AD_Init(void)
{RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);GPIO_InitTypeDef GPIO_Init_Structure;//配置为模拟输入模式.在AIN模式下GPIO是无效的防止GPIO的输入输出对模拟电压的影响GPIO_Init_Structure.GPIO_ModeGPIO_Mode_AIN;GPIO_Init_Structure.GPIO_PinGPIO_Pin_0;GPIO_Init_Structure.GPIO_SpeedGPIO_Speed_50MHz;GPIO_Init(GPIOA,GPIO_Init_Structure);GPIO_Init_Structure.GPIO_ModeGPIO_Mode_Out_PP;GPIO_Init_Structure.GPIO_PinGPIO_Pin_1;GPIO_Init_Structure.GPIO_SpeedGPIO_Speed_50MHz;GPIO_Init(GPIOA,GPIO_Init_Structure);RCC_ADCCLKConfig(RCC_PCLK2_Div6); //12MHZADC_RegularChannelConfig(ADC1,ADC_Channel_0,1,ADC_SampleTime_55Cycles5); //55.512.568ADC_InitTypeDef ADC_InitStruct;ADC_InitStruct.ADC_ContinuousConvModeDISABLE;ADC_InitStruct.ADC_ScanConvModeDISABLE;ADC_InitStruct.ADC_DataAlignADC_DataAlign_Right;ADC_InitStruct.ADC_ExternalTrigConvADC_ExternalTrigConv_None;ADC_InitStruct.ADC_ModeADC_Mode_Independent;ADC_InitStruct.ADC_NbrOfChannel1;ADC_Init(ADC1,ADC_InitStruct);//模拟看门狗ADC_AnalogWatchdogSingleChannelConfig(ADC1,ADC_Channel_0); //配置通道ADC_AnalogWatchdogThresholdsConfig(ADC1,3000,0); //阈值ADC_AnalogWatchdogCmd(ADC1,ADC_AnalogWatchdog_SingleRegEnable);//一定不要忘了使能看门狗中断ADC_ITConfig(ADC1,ADC_IT_AWD,ENABLE);NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);NVIC_InitTypeDef NVIC_InitStruct;NVIC_InitStruct.NVIC_IRQChannelADC1_2_IRQn;NVIC_InitStruct.NVIC_IRQChannelCmdENABLE;NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority2;NVIC_InitStruct.NVIC_IRQChannelSubPriority1;NVIC_Init(NVIC_InitStruct);//使能ADC_Cmd(ADC1,ENABLE);//复位校准ADC_ResetCalibration(ADC1); //ADCx-CR2 | CR2_RSTCAL_Set;while(ADC_GetResetCalibrationStatus(ADC1) SET); //该位由软件设置并由硬件清除。在校准寄存器被初始化后该位将被清除ADC_StartCalibration(ADC1);while(ADC_GetCalibrationStatus(ADC1) SET);}uint16_t AD_GetValue(void)
{//软件触发转换ADC_SoftwareStartConvCmd(ADC1,ENABLE);//不能用这个函数由软件设置该位以启动转换转换开始后硬件马上清除此位。//ADC_GetSoftwareStartConvStatus()//该位由硬件在(规则或注入)通道组转换结束时设置由软件清除或由读取ADC_DR时清除。0转换未完成1转换完成。while(ADC_GetFlagStatus(ADC1,ADC_FLAG_EOC) RESET);return ADC_GetConversionValue(ADC1);
}使用光敏电阻模块当模拟数值超过阈值进入中断即光线弱时led灯点亮。
#include stm32f10x.h // Device header
#include Delay.h
#include LED.H
#include Key.h
#include OLED.H
#include AD.Huint16_t light,temp;
uint8_t flag0;int main(void)
{OLED_Init();AD_Init();GPIO_SetBits(GPIOA,GPIO_Pin_1);while(1){light AD_GetValue();OLED_ShowNum(1,1,light,4);if(flag1){GPIO_ResetBits(GPIOA,GPIO_Pin_1);flag0;}else{GPIO_SetBits(GPIOA,GPIO_Pin_1);}}
}void ADC1_2_IRQHandler(void)
{if(ADC_GetITStatus(ADC1,ADC_IT_AWD) SET){flag1;ADC_ClearITPendingBit(ADC1,ADC_IT_AWD);}
}
