Exported_Macros_Helper

Defines
#define	__LL_USART_DIV_SAMPLING8(__PERIPHCLK__, __PRESCALER__, __BAUDRATE__)
	Compute USARTDIV value according to Peripheral Clock and expected Baud Rate in 8 bits sampling mode (32 bits value of USARTDIV is returned)
#define	__LL_USART_DIV_SAMPLING16(__PERIPHCLK__, __PRESCALER__, __BAUDRATE__)
	Compute USARTDIV value according to Peripheral Clock and expected Baud Rate in 16 bits sampling mode (32 bits value of USARTDIV is returned)

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Define Documentation

#define __LL_USART_DIV_SAMPLING16	(		__PERIPHCLK__,
			__PRESCALER__,
			__BAUDRATE__
	)

Value:

((((__PERIPHCLK__)/(USART_PRESCALER_TAB[(__PRESCALER__)]))\
    + ((__BAUDRATE__)/2U))/(__BAUDRATE__))

Compute USARTDIV value according to Peripheral Clock and expected Baud Rate in 16 bits sampling mode (32 bits value of USARTDIV is returned)

Parameters:

__PERIPHCLK__	Peripheral Clock frequency used for USART instance
__PRESCALER__	This parameter can be one of the following values: LL_USART_PRESCALER_DIV1 LL_USART_PRESCALER_DIV2 LL_USART_PRESCALER_DIV4 LL_USART_PRESCALER_DIV6 LL_USART_PRESCALER_DIV8 LL_USART_PRESCALER_DIV10 LL_USART_PRESCALER_DIV12 LL_USART_PRESCALER_DIV16 LL_USART_PRESCALER_DIV32 LL_USART_PRESCALER_DIV64 LL_USART_PRESCALER_DIV128 LL_USART_PRESCALER_DIV256
__BAUDRATE__	Baud rate value to achieve

Return values:

USARTDIV

value to be used for BRR register filling in OverSampling_16 case

Definition at line 600 of file stm32h7xx_ll_usart.h.

Referenced by LL_USART_SetBaudRate().

#define __LL_USART_DIV_SAMPLING8	(		__PERIPHCLK__,
			__PRESCALER__,
			__BAUDRATE__
	)

Value:

(((((__PERIPHCLK__)/(USART_PRESCALER_TAB[(__PRESCALER__)]))*2U)\
    + ((__BAUDRATE__)/2U))/(__BAUDRATE__))

Compute USARTDIV value according to Peripheral Clock and expected Baud Rate in 8 bits sampling mode (32 bits value of USARTDIV is returned)

Parameters:

__PERIPHCLK__	Peripheral Clock frequency used for USART instance
__PRESCALER__	This parameter can be one of the following values: LL_USART_PRESCALER_DIV1 LL_USART_PRESCALER_DIV2 LL_USART_PRESCALER_DIV4 LL_USART_PRESCALER_DIV6 LL_USART_PRESCALER_DIV8 LL_USART_PRESCALER_DIV10 LL_USART_PRESCALER_DIV12 LL_USART_PRESCALER_DIV16 LL_USART_PRESCALER_DIV32 LL_USART_PRESCALER_DIV64 LL_USART_PRESCALER_DIV128 LL_USART_PRESCALER_DIV256
__BAUDRATE__	Baud rate value to achieve

Return values:

USARTDIV

value to be used for BRR register filling in OverSampling_8 case

Definition at line 576 of file stm32h7xx_ll_usart.h.

Referenced by LL_USART_SetBaudRate().