RCCEx Exported Constants

Modules
	Low Speed Clock Source
	Periph Clock Selection
	USART1 Clock Source
	USART2 Clock Source
	USART3 Clock Source
	UART4 Clock Source
	UART5 Clock Source
	LPUART1 Clock Source
	I2C1 Clock Source
	I2C2 Clock Source
	I2C3 Clock Source
	SAI1 Clock Source
	SAI2 Clock Source
	LPTIM1 Clock Source
	LPTIM2 Clock Source
	SDMMC1 Clock Source
	RNG Clock Source
	USB Clock Source
	ADC Clock Source
	SWPMI1 Clock Source
	DFSDM1 Clock Source
	RCC LSE CSS external interrupt line