- void myADC_Init()
- {
- ADC_InitTypeDef ADC_InitStruct;
- GPIO_InitTypeDef GPIO_InitStruct;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 ,ENABLE);
- RCC_ADCCLKConfig(RCC_PCLK2_Div6);
-
- //ADC1_Init
- GPIO_InitStruct.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_0;
- GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AIN;
- GPIO_Init(GPIOA,&GPIO_InitStruct);
-
- ADC_DeInit(ADC1);
- ADC_InitStruct.ADC_Mode = ADC_Mode_Independent;
- ADC_InitStruct.ADC_NbrOfChannel = 1;
- ADC_InitStruct.ADC_ContinuousConvMode = DISABLE;
- ADC_InitStruct.ADC_ScanConvMode = DISABLE;
- ADC_InitStruct.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T3_TRGO;
- ADC_InitStruct.ADC_DataAlign =ADC_DataAlign_Right;
- ADC_Init(ADC1,&ADC_InitStruct);
-
- ADC_ExternalTrigConvCmd(ADC1,ENABLE);
- //ENABLE ADC1
- ADC_RegularChannelConfig(ADC1,0,1,ADC_SampleTime_1Cycles5);
-
- ADC_DMACmd(ADC1,ENABLE);
- ADC_Cmd(ADC1,ENABLE);
-
- ADC_ResetCalibration(ADC1);
- while(ADC_GetResetCalibrationStatus(ADC1));
- ADC_StartCalibration(ADC1);
- while(ADC_GetCalibrationStatus(ADC1));
-
- }
-
- void TIM3_Init()
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
- NVIC_InitTypeDef NVIC_InitStruct;
-
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
-
- TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
- TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
- TIM_TimeBaseInitStruct.TIM_Period = 72000000/SampleRate;
- TIM_TimeBaseInitStruct.TIM_Prescaler = 0;
- TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStruct);
-
- TIM_SelectOutputTrigger(TIM3,TIM_TRGOSource_Update); //选择TRGO触发源为计时器更新时间
-
- TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);
- NVIC_InitStruct.NVIC_IRQChannel = TIM3_IRQn;
- NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
- NVIC_InitStruct.NVIC_IRQChannelSubPriority = 3;
- NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStruct);
- TIM_Cmd(TIM3,ENABLE);
-
- }
|