AN4228 datasheet(57/90 Pages) STMICROELECTRONICS

57 / 90 page

DocID024110 Rev 5

57/90

AN4228

Firmware migration using the library

RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div2);

/* Enable ADC1 clock */

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);

ADC_StructInit(&ADC_InitStructure);

/* Calibration procedure */

ADC_VoltageRegulatorCmd(ADC1, ENABLE);

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_AsynClkMode;

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_Enable;

ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;

ADC_InitStructure.ADC_ExternalTrigConvEvent =

ADC_ExternalTrigConvEvent_0;

ADC_InitStructure.ADC_ExternalTrigEventEdge =

ADC_ExternalTrigEventEdge_None;

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 channel14 configuration */

ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1,

ADC_SampleTime_7Cycles5);

/* Enable ADC1 */

ADC_Cmd(ADC1, ENABLE);

/* wait for ADRDY */

while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY));

/* Start ADC1 Software Conversion */

AN4228 Datasheet(PDF) 57 Page - STMicroelectronics