自学教程：C++ ADC_GetConversionValue函数代码示例

/*---------------------------------------------------------------------------*/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;}

/**  * @brief  Calculate the actual Voltage  * @note     * @retval The value of the VoltageCal data.  //STM32F042Cx  为12 bit 精度ADC  */float VoltageCal(void){		//uint32_t Voltage;	#define Vref_CAL_ADDR ((uint16_t*) ((uint32_t) 0x1FFFF7ba))	float Voltage;	float Voltage2;	float Voltage3;	//启动转换	ADC_StartOfConversion(ADC1);	//wait for conversion complete	while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)){;}	//read ADC value	Voltage = (float)ADC_GetConversionValue(ADC1);    	#if  1	//wait for conversion complete	while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)){;}	//read ADC value	Voltage2 = (float)ADC_GetConversionValue(ADC1);    	Voltage3 =   ((*Vref_CAL_ADDR )* 3.3) /Voltage2;	Voltage = ( Voltage * Voltage3) /0xFFF;	#else	Voltage = ( Voltage * 3.3) /0xFFF;	#endif	    return Voltage;}

/**  * @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;}

void CIO::interrupt(){  uint8_t control  = MARK_NONE;  uint16_t sample  = DC_OFFSET;  uint16_t rawRSSI = 0U;  m_txBuffer.get(sample, control);  // Send the value to the DAC  DAC_SetChannel1Data(DAC_Align_12b_R, sample);  // Read value from ADC1 and ADC2  if ((ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET)) {    // shouldn't be still in reset at this point so null the sample value?    sample  = 0U;  } else {    sample  = ADC_GetConversionValue(ADC1);#if defined(SEND_RSSI_DATA)    rawRSSI = ADC_GetConversionValue(ADC2);#endif  }  // trigger next ADC1  ADC_ClearFlag(ADC1, ADC_FLAG_EOC);  ADC_SoftwareStartConv(ADC1);  m_rxBuffer.put(sample, control);  m_rssiBuffer.put(rawRSSI);  m_watchdog++;}

/**  * @brief  Main program.  * @param  None  * @retval None  */int main(void){    /* Configure System clocks -----------------------------------------------*/    RCC_Configuration();        /* Configure GPIO ports --------------------------------------------------*/    GPIO_Configuration();    USART_Configuration();    /* Output a message on Hyperterminal using printf function */    printf("/n/rADC different test: /n/r");    ADC_Configuration();    while(ADC_GetBitState(ADC_FLAG_EOC) != SET);    ADCConvertedValue = ADC_GetConversionValue();    printf("/n/rThe original data  %d/n/r",ADCConvertedValue);    ADC_DeInit(&ADC_InitStructure);    ADC_OVERConfiguration();    while(ADC_GetBitState(ADC_FLAG_EOC) != SET);    ADCConvertedValue_OVER = ADC_GetConversionValue();    printf("/n/rOversampling data  %d/n/r",ADCConvertedValue_OVER);    while (1)    {    }}

void DMA2_Stream0_IRQHandler (void) {    __IO uint16_t SENSOR_A_VoltValue = ADC_GetConversionValue(ADC1) * 3000/0xfff;    __IO uint16_t SENSOR_B_VoltValue = ADC_GetConversionValue(ADC2) * 3000/0xfff;    if(SENSOR_A_VoltValue > SENSOR_B_VoltValue) {        sensor_header = 1;    } else {        sensor_header = -1;    }    DMA_ClearITPendingBit(DMA2_Stream0, DMA_IT_TCIF0);}

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}

void ADC_IRQHandler(void) {    //ADC_ClearFlag(ADC1,ADC_FLAG_EOC);    __IO uint16_t SENSOR_A_VoltValue = ADC_GetConversionValue(ADC1) * 3000/0xfff;    __IO uint16_t SENSOR_B_VoltValue = ADC_GetConversionValue(ADC2) * 3000/0xfff;    if(SENSOR_A_VoltValue > SENSOR_B_VoltValue) {        sensor_header = 1;    } else {        sensor_header = -1;    }}

int Get_ADC_Voltage(ADC_TypeDef* ADCx){	AD_value=ADC_GetConversionValue(ADCx);		//读取ADC转换出的值	Precent = (AD_value*100/4096);			    //算出百分比	Voltage = Precent*33;						//3.3V的电平，计算等效电平	return(Voltage);}

/** * @brief To get adc value of A0 ~ A3 from a WIZnet module. * @param index The sequence for A0 ~ A3 registration * @return adc value (uint16_t) */uint16_t get_ADC_val(uint8_t index){	uint16 adc_value = 0;#if 0	// for Test	switch(index)	{		case A0: // WIZ550web BaseBoard: Potentiometer			if(ADC_GetFlagStatus(ADC2, ADC_FLAG_EOC) == SET) adc_value = ADC_GetConversionValue(ADC2);			break;		case A1: // WIZ550web BaseBoard: Temperature Sensor			adc_value = ADC1ConvertedValue; // TemperatureC = (((ADC_value * 3300) / 1023) - 500) / 10;			break;		case A2:			adc_value = 1000;			break;		case A3:			adc_value = 2000;			break;		default:			adc_value = 0;			break;	}#else	adc_value = ADC_DualConvertedValueTab[index];#endif	return adc_value;}

/**  * @brief  Main program.  * @param  None  * @retval None  */int main(void){  /*!< At this stage the microcontroller clock setting is already configured,        this is done through SystemInit() function which is called from startup       file (startup_stm32f0xx.s) before to branch to application main.       To reconfigure the default setting of SystemInit() function, refer to       system_stm32f0xx.c file     */   /* ADC Configuration */  ADC_Config();  /* LCD Display init  */  Display_Init();      /* Infinite loop */  while (1)  {    /* Test EOC flag */    while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);        /* Get ADC1 converted data */    ADC1ConvertedValue =ADC_GetConversionValue(ADC1);        /* Compute the voltage */    ADC1ConvertedVoltage = (ADC1ConvertedValue *3300)/0xFFF;        /* Display converted data on the LCD */    Display();  }}

float readTemp(){	float temperature;		ADC_SoftwareStartConv(ADC1);				// Start the conversion	while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET); // Wait for conversion to finish	temperature = (float) ADC_GetConversionValue(ADC1); 			// Get ADC reading	// Print ADC reading	setbuf(stdout, NULL);        printf("%f, " , temperature);		// TODO: Convert ADC (digital) reading back to voltage value        // Use the formula on page 20 of the lecture slides        // Here, v_min = 0, v_max = 3.3, and n depends on the resolution        // of the ADC (refer to the adc intialization in initTempSensor() function)	// Assign the voltage value back to the temperature variable        convADC(&temperature,12);	setbuf(stdout, NULL);        printf("%f, " , temperature);		// TODO: Convert the digital value to a temperature and assign back	// to the temperature value.	// The formula for this conversion is given in the Technical Reference Manual        // (v_sense is the voltage value we calculated in the previous step 	// and assigned back to temp)	// Temperature (in °C) = {(V_SENSE - V_25) / Avg_Slope} + 25	convVolt(&temperature);	setbuf(stdout, NULL);        printf("%f/n" , temperature);		return temperature;}

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;}

uint16_t adc_lightsensor(void) {  digitalWrite(ADC_LIGHTSENSOR_ENABLE, HIGH);  ADC_SoftwareStartConv(ADC2);  while(ADC_GetSoftwareStartConvStatus(ADC2));  return ADC_GetConversionValue(ADC2);  digitalWrite(ADC_LIGHTSENSOR_ENABLE, LOW);}

void adc_convert(void){		uint16_t ADC1ConvertedValue;		  /* Test EOC flag */		while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET)			; 	    /* Get ADC1 converted data */		ADC1ConvertedValue = ADC_GetConversionValue(ADC1);		//update_rawADC(USART2, ADC1ConvertedValue);		//ADC value 0-4096		//update_degF(USART2, ADC1ConvertedValue/1.64);	//degF 0-2500F		//update_degC(USART2, ADC1ConvertedValue/3);		//degC 0-1370C				//USART_PUT_TEMPF(USART2, ADC1ConvertedValue/1.64);		//USART_PUT_TEMPC(USART2, ADC1ConvertedValue/3);				if (ADC1ConvertedValue > 4000)		{			GPIOC->BSRR = GPIO_Pin_8;			GPIOC->BSRR = GPIO_Pin_9;		}		else if (ADC1ConvertedValue > 2000)		{			GPIOC->BSRR = GPIO_Pin_8;			GPIOC->BRR = GPIO_Pin_9;		}		else		{			GPIOC->BRR = GPIO_Pin_8;			GPIOC->BRR = GPIO_Pin_9;		}}

static inline uint16_t adc_read(analogin_t *obj) {  // Get ADC registers structure address  ADC_TypeDef *adc = (ADC_TypeDef *)(obj->adc);    // Configure ADC channel  switch (obj->pin) {      case PA_0:          ADC_RegularChannelConfig(adc, ADC_Channel_0, 1, ADC_SampleTime_7Cycles5);          break;      case PA_1:          ADC_RegularChannelConfig(adc, ADC_Channel_1, 1, ADC_SampleTime_7Cycles5);          break;      case PA_4:          ADC_RegularChannelConfig(adc, ADC_Channel_4, 1, ADC_SampleTime_7Cycles5);          break;      case PB_0:          ADC_RegularChannelConfig(adc, ADC_Channel_8, 1, ADC_SampleTime_7Cycles5);          break;      case PC_1:          ADC_RegularChannelConfig(adc, ADC_Channel_11, 1, ADC_SampleTime_7Cycles5);          break;      case PC_0:          ADC_RegularChannelConfig(adc, ADC_Channel_10, 1, ADC_SampleTime_7Cycles5);          break;      default:          return 0;  }  ADC_SoftwareStartConvCmd(adc, ENABLE); // Start conversion    while(ADC_GetFlagStatus(adc, ADC_FLAG_EOC) == RESET); // Wait end of conversion    return(ADC_GetConversionValue(adc)); // Get conversion value}

unsigned short ReadADC1 (unsigned int channel){	uint32_t tmpreg = 0;	//GPIOA_PIN4_ON;	// Set channel and sample time	//ADC_ChannelConfig(ADC1, channel, ADC_SampleTime_7_5Cycles);	//pifia la medicion 2800 o 3400 en ves de 4095	//ADC_ChannelConfig(ADC1, channel, ADC_SampleTime_239_5Cycles);	//ADC_ChannelConfig(ADC1, ADC_Channel_0, ADC_SampleTime_239_5Cycles);	//ADC_ChannelConfig INTERNALS	/* Configure the ADC Channel */	ADC1->CHSELR = channel;	/* Clear the Sampling time Selection bits */	tmpreg &= ~ADC_SMPR1_SMPR;	/* Set the ADC Sampling Time register */	tmpreg |= (uint32_t)ADC_SampleTime_239_5Cycles;	/* Configure the ADC Sample time register */	ADC1->SMPR = tmpreg ;	// Start the conversion	ADC_StartOfConversion(ADC1);	// Wait until conversion completion	while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);	// Get the conversion value	//GPIOA_PIN4_OFF;	//tarda 20us en convertir	return ADC_GetConversionValue(ADC1);}

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