__HAL_RCC_SYSCLK_CONFIG macro

Macro to configure the system clock source.

Syntax

from stm32f4xx_hal_rcc.h:1070

#define __HAL_RCC_SYSCLK_CONFIG(__RCC_SYSCLKSOURCE__) MODIFY_REG(RCC->CFGR, RCC_CFGR_SW, (__RCC_SYSCLKSOURCE__))

Arguments

__RCC_SYSCLKSOURCE__

specifies the system clock source. This parameter can be one of the following values: - RCC_SYSCLKSOURCE_HSI: HSI oscillator is used as system clock source. - RCC_SYSCLKSOURCE_HSE: HSE oscillator is used as system clock source. - RCC_SYSCLKSOURCE_PLLCLK: PLL output is used as system clock source. - RCC_SYSCLKSOURCE_PLLRCLK: PLLR output is used as system clock source. This parameter is available only for STM32F446xx devices.

References

Location	Text
stm32f4xx_hal_rcc.h:1070	#define __HAL_RCC_SYSCLK_CONFIG(__RCC_SYSCLKSOURCE__) MODIFY_REG(RCC->CFGR, RCC_CFGR_SW, (__RCC_SYSCLKSOURCE__))
stm32f4xx_hal_rcc.c:676	__HAL_RCC_SYSCLK_CONFIG(RCC_ClkInitStruct->SYSCLKSource);