Posted on February 18, 2014 at 07:58I tried to do that, but still I have a problem in starting the ADC injected conversion:
the ADC Init function:
/* Enable ADC1 clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);
/* ADC Channel configuration */
/* GPIOC Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div4);
/* Configure ADC Channel7 as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
ADC_StructInit(&ADC_InitStructure);
/* Calibration procedure */
ADC_VoltageRegulatorCmd(ADC1, ENABLE);
/* Insert delay equal to 10 µs */
Delay(10);
ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1) != RESET );
calibration_value = ADC_GetCalibrationValue(ADC1);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Clock = ADC_Clock_SynClkModeDiv4;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_OneShot;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = 0;
ADC_CommonInit(ADC1, &ADC_CommonInitStructure);
ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Disable;
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_NbrOfRegChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel7 configuration */
ADC_InjectedChannelConfig(ADC1, ADC_Channel_7, 1, ADC_SampleTime_1Cycles5);
ADC_ExternalTriggerInjectedConfig(ADC1,ADC_ExternalTrigInjecConvEvent_1,ADC_ExternalTrigInjecEventEdge_RisingEdge);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* wait for ADRDY */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY));
/* Start ADC1 Software Conversion */
ADC_StartConversion(ADC1);
ADC_ITConfig(ADC1,ADC_IT_JEOC,ENABLE);
NVIC_InitStructure.NVIC_IRQChannel=ADC1_2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
