自学教程：C++ ADC_SoftwareStartConv函数代码示例

/**  * @brief  Initializes the temperature sensor and its related ADC.  * @param  None  * @retval the float value of temperature measured in Celsius.  */float temperature_MeasureValue(void){		/* Raw value of temperature sensor voltage converted from ADC1_IN16 */	uint16_t v_refint;	/* Raw value of VREFINT converted from ADC1_INT17 */	uint16_t v_sensor;		/* select ADC1_IN16 to sample sensor voltage value*/	ADC_RegularChannelConfig(ADC1, ADC_Channel_16, 1, ADC_SampleTime_28Cycles);	/* start one ADC conversion */	ADC_SoftwareStartConv(ADC1);	/*  wait unitl ECO bit is set, sample finished */	while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);	ADC_ClearFlag(ADC1, ADC_FLAG_EOC);	/* Read the value from ADC_DR*/	v_sensor = ADC_GetConversionValue(ADC1);	/* select ADC1_IN16 to sample reference voltage value*/	ADC_RegularChannelConfig(ADC1, ADC_Channel_17, 1, ADC_SampleTime_28Cycles);	/* start one ADC conversion */	ADC_SoftwareStartConv(ADC1);	/*  wait unitl ECO bit is set, sample finished */	while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);	ADC_ClearFlag(ADC1, ADC_FLAG_EOC);	/* Read the value from ADC_DR*/	v_refint = ADC_GetConversionValue(ADC1);  /*	 * measured_sensor_voltage = actual_reference_voltage * sampled_sensor_voltage / sampled_reference_voltage_value	 * temperature = (measured_sensor_voltage - sensor_voltage_at_25) / AVG_SLOPE + 25	 */	return (VREFINT_VOLTAGE_V / v_refint * v_sensor - TEMPERATURE_V25) * 1000 / AVG_SLOPE + 25;}

/*---------------------------------------------------------------------------*/int ubasic_get_adc(int ch){	int var = 0xff;	switch(ch){		case 1:			if (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET) {				var = 0xff;			} else {				var = ADC_GetConversionValue(ADC1) & 0x00ff;				ADC_SoftwareStartConv(ADC1);			}			break;		case 2:			if (ADC_GetFlagStatus(ADC2, ADC_FLAG_EOC) == RESET) {				var = 0xff;			} else {				var = ADC_GetConversionValue(ADC2) & 0x00ff;				ADC_SoftwareStartConv(ADC2);			}			break;		case 3:			if (ADC_GetFlagStatus(ADC3, ADC_FLAG_EOC) == RESET) {				var = 0xff;			} else {				var = ADC_GetConversionValue(ADC3) & 0x00ff;				ADC_SoftwareStartConv(ADC3);			}			break;		default:			var = 0xff;			break;	}	return var;}

void _ADC_Init(void) {ADC_InitTypeDef ADC_InitStructure;ADC_CommonInitTypeDef ADC_CommonInitStruct;		//Enabling ADC clockRCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE);//ADC common init configuration for Multi mode ADC	ADC_CommonInitStruct.ADC_Mode = ADC_DualMode_RegSimult;  ADC_CommonInitStruct.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled; //ADC_DMAAccessMode_Disabled; ADC_DMAAccessMode_1; ADC_DMAAccessMode_2; ADC_DMAAccessMode_3 	ADC_CommonInitStruct.ADC_Prescaler = ADC_Prescaler_Div2; //ADC_Prescaler_Div2; ADC_Prescaler_Div4; ADC_Prescaler_Div6; ADC_Prescaler_Div8	ADC_CommonInitStruct.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles; //ADC_TwoSamplingDelay_5Cycles - i tak dalej po 1 do 20 cykli		ADC_CommonInit(&ADC_CommonInitStruct);	//ADC1 configuration	ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;	ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;	ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1; //Timer	ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;	ADC_InitStructure.ADC_NbrOfConversion = 1;	ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;	ADC_InitStructure.ADC_ScanConvMode = DISABLE; 	ADC_Init(ADC1,&ADC_InitStructure);	//ADC2 configuration	ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;	ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;	ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1; //Timer	ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;	ADC_InitStructure.ADC_NbrOfConversion = 1;	ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;	ADC_InitStructure.ADC_ScanConvMode = DISABLE; 	ADC_Init(ADC2,&ADC_InitStructure);//Regular channels config	ADC_RegularChannelConfig(ADC1,ADC_Channel_9,1,ADC_SampleTime_144Cycles);	ADC_RegularChannelConfig(ADC2,ADC_Channel_2,1,ADC_SampleTime_144Cycles);//DMA for Multi mode ADC	ADC_MultiModeDMARequestAfterLastTransferCmd(ENABLE);	//Activating continuous mode	ADC_ContinuousModeCmd(ADC1, ENABLE);	ADC_ContinuousModeCmd(ADC2, ENABLE);//Enabling ADC		ADC_Cmd(ADC1, ENABLE);	ADC_Cmd(ADC2, ENABLE);	ADC_SoftwareStartConv(ADC1);	ADC_SoftwareStartConv(ADC2);}

uint16_t adc_read(uint8_t channel){  uint16_t vref;  ADC_RegularChannelConfig(ADC1, ADC_Channel_Vrefint, 0, ADC_SampleTime_384Cycles);  ADC_SoftwareStartConv(ADC1);  while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);  vref=ADC_GetConversionValue(ADC1);  ADC_RegularChannelConfig(ADC1, channel, 0, ADC_SampleTime_384Cycles);  ADC_SoftwareStartConv(ADC1);  while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);  return ADC_GetConversionValue(ADC1)*6840/vref; // magic number to get millivolts}

// fill this infloat getTemp_celcius() {	ADC_SoftwareStartConv(ADC1);	while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);	ADC_ClearFlag(ADC1, ADC_FLAG_EOC);	return ((ADC1->DR * 3000.0/4096.0) - 760)/2.5 + 25;}

int main(void){//init:    DAC_DeInit();	init_GPIOA();    init_GPIOC();    init_GPIOD();    init_DMA1();    init_DMA2();    init_TIM2();    init_TIM3();    init_TIM4();    init_TIM6();    init_ADC3();	init_DAC();	init_filter(&ap_1);	init_filter(&ap_2);	init_filter(&ap_3);	init_filter(&ap_4);	ap_filter_coefs(&ap_1);	ap_filter_coefs(&ap_2);	ap_filter_coefs(&ap_3);	ap_filter_coefs(&ap_4);    ADC_SoftwareStartConv(ADC3);    while (1)    {		counter++;    }}

/**  * @brief  Main program.  * @param  None  * @retval None  */void main(void){  /* CLK configuration -------------------------------------------*/  CLK_Config();   /* ADC configuration -------------------------------------------*/  ADC_Config();   /* DMA configuration -------------------------------------------*/  DMA_Config();   /* TIM1 configuration -------------------------------------------*/  TIM1_Config();   /* Enable ADC1 DMA requests*/  ADC_DMACmd(ADC1, ENABLE);  /* Enable TIM1 DMA requests*/  TIM1_DMACmd(TIM1_DMASource_Update, ENABLE);  /* Start ADC1 Conversion using Software trigger*/  ADC_SoftwareStartConv(ADC1);  while (1)  {}}

char sampleADC(void){    char res = 0x0;    CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);    ADC_DeInit(ADC1);    ADC_VrefintCmd(ENABLE);    delay_10us(3);    ADC_Cmd(ADC1, ENABLE);    ADC_Init(ADC1, ADC_ConversionMode_Single,             ADC_Resolution_6Bit, ADC_Prescaler_1);    ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_9Cycles);    ADC_ChannelCmd(ADC1, ADC_Channel_0, ENABLE);    delay_10us(3);    ADC_SoftwareStartConv(ADC1);    while( ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);    res = (char)ADC_GetConversionValue(ADC1);    ADC_VrefintCmd(DISABLE);    ADC_DeInit(ADC1);    /* disable SchmittTrigger for ADC_Channel_24, to save power */    //ADC_SchmittTriggerConfig(ADC1, ADC_Channel_24, DISABLE);    CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, DISABLE);    ADC_ChannelCmd(ADC1, ADC_Channel_0, DISABLE);    return res;}

/**  * @brief  Configures the ADC1 channel5.  * @param  None  * @retval None  */void ADC_Config(void){  /* Enable The HSI (16Mhz) */  RCC_HSICmd(ENABLE);  /* Enable the GPIOF or GPIOA Clock */  RCC_AHBPeriphClockCmd(IDD_MEASUREMENT_GPIO_CLK, ENABLE);  /* Configure PF.11 (ADC Channel11) or PA.05 (ADC Channe5) in analog mode */  GPIO_InitStructure.GPIO_Pin =  IDD_MEASUREMENT_PIN;  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AN;  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;  GPIO_Init(IDD_MEASUREMENT_GPIO, &GPIO_InitStructure);  /* Check that HSI oscillator is ready */  while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);  /* ADC1 Configuration ------------------------------------------------------*/    /* Enable ADC1 clock */  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);  #ifdef USE_STM32L152D_EVAL  /* Select ADC Bank channel */  ADC_BankSelection(ADC1, ADC_Bank_B);#endif    ADC_StructInit(&ADC_InitStructure);  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;  ADC_InitStructure.ADC_ScanConvMode = DISABLE;  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;  ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;  ADC_InitStructure.ADC_NbrOfConversion = 1;  ADC_Init(ADC1, &ADC_InitStructure);  /* ADC1 regular channel5 or channel1 configuration */  ADC_RegularChannelConfig(ADC1, IDD_MEASUREMENT_ADC_CHANNEL, 1, ADC_SampleTime_192Cycles);  /* Define delay between ADC1 conversions */  ADC_DelaySelectionConfig(ADC1, ADC_DelayLength_Freeze);    /* Enable ADC1 Power Down during Delay */  ADC_PowerDownCmd(ADC1, ADC_PowerDown_Idle_Delay, ENABLE);    /* Enable ADC1 */  ADC_Cmd(ADC1, ENABLE);  /* Wait until ADC1 ON status */  while (ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == RESET)  {  }  /* Start ADC1 Software Conversion */  ADC_SoftwareStartConv(ADC1);  /* Wait until ADC Channel 5 or 1 end of conversion */  while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET)  {  }}

/*-----------------------------------------------------------* @brief Function Name  : vhADC_initADC* @brief Description    : Initializes ADC*/void vhADC_initADC(void){	/* ADC Common initialization */	ADC_CommonInitTypeDef ADC_CommonInitStructure;	ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;	ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div6;		// 84MHz / prescaler(6) = 14MHz (max 30 OR 36... idk)	ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;	ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;	ADC_CommonInit(&ADC_CommonInitStructure);	ADC_InitTypeDef ADC_InitStructure;	ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;	ADC_InitStructure.ADC_ScanConvMode = ENABLE;			// Enable, because we want to measure more than 1 channel	ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;	ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_RisingFalling;	ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;	ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;	ADC_InitStructure.ADC_NbrOfConversion = 2;	ADC_Init(ADC1, &ADC_InitStructure);	/* ADCx regular channel configuration */	ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_28Cycles);	ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 2, ADC_SampleTime_28Cycles);	/* Enable DMA request after last transfer (Single-ADC mode) */	ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);	/* Enable ADCx DMA */	ADC_DMACmd(ADC1, ENABLE);	/* Enable ADCx */	ADC_Cmd(ADC1, ENABLE);	ADC_SoftwareStartConv(ADC1);}

void ADC_AcquireData(){  	/* Enable ADC clock */  //RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);   /* Enable ADC1 */  //ADC_Cmd(ADC1, ENABLE);  /* Wait until the ADC1 is ready */  //while(ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == RESET);   /* Disable DMA mode for ADC1 */   ADC_DMACmd(ADC1, DISABLE);		ADC_DMA_init();	   /* Enable DMA mode for ADC1 */    ADC_DMACmd(ADC1, ENABLE);  //  /* Clear global flag for DMA transfert complete *///  clearADCDMA_TransferComplete();     /* Start ADC conversion */  ADC_SoftwareStartConv(ADC1);}

void InternalTempSensor::measureTemp(bool calibrate){    // ADC Conversion to read temperature sensor    // Temperature (in °C) = ((Vsense 
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