AN4073 datasheet(30/32 Pages) STMICROELECTRONICS

Part #	AN4073

Description	How to improve ADC accuracy when using STM32F2xx and STM32F4xx microcontrollers

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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30 / 32 page

Firmware sequence to activate Option 1 and Option 2

AN4073

30/32

DocID022945 Rev 5

C.2

Option 2

/**

* @brief

Enables or disables the ADCx Option_2 configuration.

* @param

ADCxDC2: The ADCxDC2 bit to be used.

This parameter can be one of the following values:

@arg SYSCFG_PMC_ADCxDC2: All ADCxDC2 bits

@arg SYSCFG_PMC_ADC1DC2: ADC1DC2 bit

@arg SYSCFG_PMC_ADC2DC2: ADC2DC2 bit

@arg SYSCFG_PMC_ADC3DC2: ADC3DC2 bit

* @param

NewState: new state of the ADCxDC2 bit.

This parameter can be: ENABLE or DISABLE.

* @retval None

void SET_ADCOption2 (uint32_t ADCxDC2, FunctionalState NewState)

{

/* Enable the SYSCFG clock*/

RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG,ENABLE);

if (NewState != DISABLE)

{

/* Set the ADCxDC2 */

SYSCFG->PMC |= (uint32_t)ADCxDC2;

}

else

{

/* Reset the ADCxDC2 */

SYSCFG->PMC &=(uint32_t)(~ADCxDC2);

}

AN4073 Datasheet(PDF) 30 Page - STMicroelectronics